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Acquired SJB Assets and FDIC Loss Sharing Asset

6.	ACQUIRED SJB ASSETS AND FDIC LOSS SHARING ASSET

FDIC Assisted Acquisition

On October 16, 2009, the Bank acquired SJB and entered into a loss sharing agreements with the FDIC that is more fully discussed in Note 3 —

Summary of Significant Accounting Policies

included herein. The acquisition has been accounted for under the purchase method of accounting. The assets and liabilities were recorded at their estimated fair values as of the October 16, 2009 acquisition date. The acquired loans were accounted for as PCI loans.

At December 31, 2018, the remaining discount associated with the PCI loans was zero. The loss sharing agreement for commercial loans expired October 16, 2014. The loss sharing agreement with FDIC for single-family residential loans, which would have expired on October 16, 2019, was terminated by the Bank on July 20, 2018.

The following table provides a summary of PCI loans and lease finance receivables by type and by internal risk ratings (credit quality indicators) for the periods presented.

	December 31
	2018			2017
	(Dollars in thousands)
Commercial and industrial	$	519		$	934
SBA		1,258			1,383
Real estate:
Commercial real estate		14,407			27,431
Construction		-			-
SFR mortgage		145			162
Dairy & livestock and agribusiness		700			770
Municipal lease finance receivables		-			-
Consumer and other loans		185			228
Gross PCI loans		17,214			30,908
Less: Purchase accounting discount		-			(2,026	)
Gross PCI loans, net of discount		17,214			28,882
Less: Allowance for PCI loan losses		(204	)		(367	)
Net PCI loans	$	17,010		$	28,515

Credit Quality Indicators

The following table summarizes gross PCI loans by internal risk ratings for the periods presented.

	December 31,
	2018		2017
	(Dollars in thousands)
Pass	$	15,816	$	26,439
Special mention		1,174		1,088
Substandard		224		3,381
Doubtful & loss		-		-
Total gross PCI loans	$	17,214	$	30,908

FDIC Loss Sharing Liability

The following table summarizes the activity related to the FDIC loss sharing liability for the periods presented.

	For the Year Ended December 31,
	2018			2017
	(Dollars in thousands)
Balance, beginning of period	$	(107	)	$	(502	)
FDIC share of recoveries, net of charge-offs		-			-
Cash paid to FDIC, net		64			519
Other		43			(124	)
Balance, end of period	$	-		$	(107	)

Through December 31, 2018, the Bank has submitted claims to the FDIC for net losses on PCI loans totaling

118.9

milli

on.

Loans and Lease Finance Receivables and Allowance for Loan Losses

12 Months Ended

Dec. 31, 2018

Receivables [Abstract]

Loans and Lease Finance Receivables and Allowance for Loan Losses

7.	LOANS AND LEASE FINANCE RECEIVABLES AND ALLOWANCE FOR LOAN LOSSES

The following table provides a summary of total loans and lease finance receivables, excluding PCI loans, by type.

	December 31
	2018			2017
	(Dollars in thousands)
Commercial and industrial	$	1,002,209		$	513,325
SBA		350,043			122,055
Real estate:
Commercial real estate		5,394,229			3,376,713
Construction		122,782			77,982
SFR mortgage		296,504			236,202
Dairy & livestock and agribusiness		393,843			347,289
Municipal lease finance receivables		64,186			70,243
Consumer and other loans		128,429			64,229
Gross loans, excluding PCI loans		7,752,225			4,808,038
Less: Deferred loan fees, net		(4,828	)		(6,289	)
Gross loans, excluding PCI loans, net of deferred loan fees		7,747,397			4,801,749
Less: Allowance for loan losses		(63,409	)		(59,218	)
Net loans, excluding PCI loans		7,683,988			4,742,531
PCI Loans		17,214			30,908
Discount on PCI loans		-			(2,026	)
Less: Allowance for loan losses		(204	)		(367	)
PCI loans, net		17,010			28,515
Total loans and lease finance receivables	$	7,700,998		$	4,771,046

As of December 31, 2018, 74.99% of the total gross loan portfolio (excluding PCI loans) consisted of real estate loans, 69.58% of which consisted of commercial real estate loans. Substantially all of the Company’s real estate loans and construction loans are secured by real properties located in California. As of December 31, 2018, $229.8 million, or 4.26% of the total commercial real estate loans included loans secured by farmland, compared to $206.1 million, or 6.10%, at December 31, 2017. The loans secured by farmland included $126.9 million for loans secured by dairy & livestock land and $102.9 million for loans secured by agricultural land at December 31, 2018, compared to $118.2 million for loans secured by dairy & livestock land and $87.9 million for loans secured by agricultural land at December 31, 2017. As of December 31, 2018, dairy & livestock and agribusiness loans of $393.8 million were comprised of $340.5 million for dairy & livestock loans and $53.3 million for agribusiness loans, compared to $310.6 million for dairy & livestock loans and $36.7 million for agribusiness loans at December 31, 2017.

At December 31, 2018, the Company held approximately $3.77 billion of total fixed rate loans, including PCI loans.

At December 31, 2018 and 2017, loans totaling $5.71 billion and $3.68 billion, respectively, were pledged to secure the borrowings and available lines of credit from the FHLB and the Federal Reserve Bank.

There were no outstanding loans held-for-sale as of December 31, 2018 and 2017.

Credit Quality Indicators

An important element of our approach to credit risk management is our loan risk rating system. The originating officer assigns each loan an initial risk rating, which is reviewed and confirmed or changed, as appropriate, by credit management. Approvals are made based upon the amount of inherent credit risk specific to the transaction and are reviewed for appropriateness by senior line and credit management personnel. Credits are monitored by line and credit management personnel for deterioration or improvement in a borrower’s financial condition, which would impact the ability of the borrower to perform under the contract. Risk ratings are adjusted as necessary

Loans are risk rated into the following categories (Credit Quality Indicators): Pass, Special Mention, Substandard, Doubtful and Loss. Each of these groups is assessed for the proper amount to be used in determining the adequacy of our allowance for losses. These categories can be described as follows:

Pass — These loans, including loans on the Bank’s internal watch list, range from minimal credit risk to lower than average, but still acceptable, credit risk. Watch list loans usually require more than normal management attention. Loans on the watch list may involve borrowers with adverse financial trends, higher debt/equity ratios, or weaker liquidity positions, but not to the degree of being considered a defined weakness or problem loan where risk of loss may be apparent.

Special Mention — Loans assigned to this category have potential weaknesses that deserve management’s close attention. If left uncorrected, these potential weaknesses may result in the deterioration of the repayment prospects for the asset or the Company’s credit position at some future date. Special mention assets are not adversely classified and do not expose the Company to sufficient risk to warrant adverse classification.

Substandard — Loans classified as substandard are inadequately protected by the current sound worth and paying capacity of the obligor or of the collateral pledged, if any. Assets so classified must have a well-defined weakness, or weaknesses, that jeopardize the liquidation of the debt. Substandard loans are characterized by the distinct possibility that the Company will sustain some loss if deficiencies are not corrected.

Doubtful — Loans classified as doubtful have all the weaknesses inherent in those classified substandard with the added characteristic that the weaknesses make collection or the liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable.

Loss — Loans classified as loss are considered uncollectible and of such little value that their continuance as bankable assets is not warranted. This classification does not mean that the loan has absolutely no recovery or salvage value, but rather that it is not practical or desirable to defer writing off this asset with insignificant value even though partial recovery may be affected in the future.

The following table summarizes loans by type, excluding PCI loans, according to our internal risk ratings for the periods presented.

	December 31, 2018
	Pass		Special Mention		Substandard (1)		Doubtful & Loss		Total
	(Dollars in thousands)
Commercial and industrial	$	961,909	$	29,358	$	10,942	$	-	$	1,002,209
SBA		336,033		7,375		6,635		-		350,043
Real estate:
Commercial real estate
Owner occupied		2,008,169		95,841		13,980		-		2,117,990
Non-owner occupied		3,260,822		9,938		5,479		-		3,276,239
Construction
Speculative		118,233		-		-		-		118,233
Non-speculative		4,549		-		-		-		4,549
SFR mortgage		289,607		3,310		3,587		-		296,504
Dairy & livestock and agribusiness		350,044		34,586		9,213		-		393,843
Municipal lease finance receivables		63,650		536		-		-		64,186
Consumer and other loans		126,085		1,263		1,081		-		128,429
Total gross loans, excluding PCI loans	$	7,519,101	$	182,207	$	50,917	$	-	$	7,752,225

(1)	Includes $ 19.0 million of classified loans acquired from CB in the third quarter of 2018 .

	December 31, 2017
	Pass		Special Mention		Substandard		Doubtful & Loss		Total
	(Dollars in thousands)
Commercial and industrial	$	483,641	$	19,566	$	10,118	$	-	$	513,325
SBA		112,835		5,358		3,862		-		122,055
Real estate:
Commercial real estate
Owner occupied		1,009,199		76,111		10,970		-		1,096,280
Non-owner occupied		2,257,130		16,434		6,869		-		2,280,433
Construction
Speculative		60,042		-		-		-		60,042
Non-speculative		17,940		-		-		-		17,940
SFR mortgage		229,032		3,124		4,046		-		236,202
Dairy & livestock and agribusiness		321,413		9,047		16,829		-		347,289
Municipal lease finance receivables		69,644		599		-		-		70,243
Consumer and other loans		61,715		1,255		1,259		-		64,229
Total gross loans, excluding PCI loans	$	4,622,591	$	131,494	$	53,953	$	-	$	4,808,038

Allowance for Loan Losses

The Bank’s Audit and Director Loan Committees provide Board oversight of the ALLL process and approve the ALLL methodology on a quarterly basis.

Our methodology for assessing the appropriateness of the allowance is conducted on a regular basis and considers the Bank’s overall loan portfolio. Refer to Note 3 —

Summary of Significant Accounting Policies

for a more detailed discussion concerning the allowance for loan losses.

Management believes that the ALLL was appropriate at December 31, 2018 and 2017. No assurance can be given that economic conditions which adversely affect the Company’s service areas or other circumstances will not be reflected in increased provisions for loan losses in the future.

The following tables present the balance and activity related to the allowance for loan losses for held-for-investment loans by type for the periods presented.

	For the Year Ended December 31, 2018
	Ending Balance December 31, 2017		Charge-offs			Recoveries		Provision for (Recapture of) Loan Losses			Ending Balance December 31, 2018
	(Dollars in thousands)
Commercial and industrial	$	7,280	$	(10	)	$	82	$	168		$	7,520
SBA		869		(257	)		20		430			1,062
Real estate:
Commercial real estate		41,722		-			-		3,212			44,934
Construction		984		-			2,506		(2,509	)		981
SFR mortgage		2,112		(13	)		51		46			2,196
Dairy & livestock and agribusiness		4,647		-			19		549			5,215
Municipal lease finance receivables		851		-			-		(76	)		775
Consumer and other loans		753		(11	)		141		(157	)		726
PCI loans		367		-			-		(163	)		204
Total allowance for loan losses	$	59,585	$	(291	)	$	2,819	$	1,500		$	63,613

	For the Year Ended December 31, 2017
	Ending Balance December 31, 2016		Charge-offs			Recoveries		(Recapture of) Provision for Loan Losses			Ending Balance December 31, 2017
	(Dollars in thousands)
Commercial and industrial	$	8,154	$	(138	)	$	118	$	(854	)	$	7,280
SBA		871		-			78		(80	)		869
Real estate:
Commercial real estate		37,443		-			154		4,125			41,722
Construction		1,096		-			6,036		(6,148	)		984
SFR mortgage		2,287		-			212		(387	)		2,112
Dairy & livestock and agribusiness		8,541		-			19		(3,913	)		4,647
Municipal lease finance receivables		941		-			-		(90	)		851
Consumer and other loans		988		(13	)		79		(301	)		753
PCI loans		1,219		-			-		(852	)		367
Total allowance for loan losses	$	61,540	$	(151	)	$	6,696	$	(8,500	)	$	59,585


	For the Y ear Ended December 31, 2016
	Ending Balance December 31, 2015		Charge-offs			Recoveries		(Recapture of) Provision for Loan Losses			Ending Balance December 31, 2016
	(Dollars in thousands)
Commercial and industrial	$	8,588	$	(120	)	$	630	$	(944	)	$	8,154
SBA		993		—			40		(162	)		871
Real estate:
Commercial real estate		36,995		—			792		(344	)		37,443
Construction		2,389		—			7,174		(8,467	)		1,096
SFR mortgage		2,103		(102	)		—		286			2,287
Dairy & livestock and agribusiness		6,029		—			216		2,296			8,541
Municipal lease finance receivables		1,153		—			—		(212	)		941
Consumer and other loans		906		(16	)		170		(72	)		988
PCI loans		—		—			—		1,219			1,219
Total allowance for loan losses	$	59,156	$	(238	)	$	9,022	$	(6,400	)	$	61,540

The following tables present the recorded investment in loans held-for-investment and the related allowance for loan losses by loan type, based on the Company’s methodology for determining the allowance for loan losses for the periods presented. Acquired loans are also supported by a credit discount established through the determination of fair value for the acquired loan portfolio.

	December 31, 2018
	Recorded Investment in Loans						Allowance for Loan Losses
	Individually Evaluated for Impairment		Collectively Evaluated for Impairment		Acquired with Deterioriated Credit Quality		Individually Evaluated for Impairment		Collectively Evaluated for Impairment		Acquired with Deterioriated Credit Quality
	(Dollars in thousands)
Commercial and industrial	$	7,625	$	994,584	$	—	$	3	$	7,517	$	—
SBA		3,467		346,576		—		—		1,062		—
Real estate:
Commercial real estate		6,540		5,387,689		—		478		44,456		—
Construction		—		122,782		—		—		981		—
SFR mortgage		5,349		291,155		—		—		2,196		—
Dairy & livestock and agribusiness		78		393,765		—		12		5,203		—
Municipal lease finance receivables		—		64,186		—		—		775		—
Consumer and other loans		486		127,943		—		68		658		—
PCI loans		—		—		17,214		—		—		204
Total	$	23,545	$	7,728,680	$	17,214	$	561	$	62,848	$	204


	December 31, 2017
	Recorded Investment in Loans						Allowance for Loan Losses
	Individually Evaluated for Impairment		Collectively Evaluated for Impairment		Acquired with Deterioriated Credit Quality		Individually Evaluated for Impairment		Collectively Evaluated for Impairment		Acquired with Deterioriated Credit Quality
	(Dollars in thousands)
Commercial and industrial	$	440	$	512,885	$	—	$	—	$	7,280	$	—
SBA		1,531		120,524		—		1		868		—
Real estate:
Commercial real estate		8,133		3,368,580		—		—		41,722		—
Construction		—		77,982		—		—		984		—
SFR mortgage		4,040		232,162		—		—		2,112		—
Dairy & livestock and agribusiness		829		346,460		—		—		4,647		—
Municipal lease finance receivables		—		70,243		—		—		851		—
Consumer and other loans		552		63,677		—		74		679		—
PCI loans		—		—		28,882		—		—		367
Total	$	15,525	$	4,792,513	$	28,882	$	75	$	59,143	$	367

Past Due and Nonperforming Loans

We seek to manage asset quality and control credit risk through diversification of the loan portfolio and the application of policies designed to promote sound underwriting and loan monitoring practices. The Bank’s Credit Management Division is in charge of monitoring asset quality, establishing credit policies and procedures and enforcing the consistent application of these policies and procedures across the Bank. Reviews of nonperforming, past due loans and larger credits, designed to identify potential charges to the allowance for loan losses, and to determine the adequacy of the allowance, are conducted on an ongoing basis. These reviews consider such factors as the financial strength of borrowers and any guarantors, the value of the applicable collateral, loan loss experience, estimated loan losses, growth in the loan portfolio, prevailing economic conditions and other factors. Refer to Note 3 –

Summary of Significant Accounting Policies

for additional discussion concerning the Bank’s policy for past due and nonperforming loans.

A loan is reported as a TDR when the Bank grants a concession(s) to a borrower experiencing financial difficulties that the Bank would not otherwise consider. Examples of such concessions include a reduction in the interest rate, deferral of principal or accrued interest, extending the payment due dates or loan maturity date(s), or providing a lower interest rate than would be normally available for new debt of similar risk. As a result

of one or more

these concessions, restructured loans are classified as impaired. Impairment reserves on non-collateral dependent restructured loans are measured by comparing the present value of expected future cash flows on the restructured loans discounted at the interest rate of the original loan agreement to the carrying

value

of the loan

. These impairment reserves are recognized as a specific component to be provided for in the allowance for loan losses.

Generally, when loans are identified as impaired they are moved to our Special Assets Department. When we identify a loan as impaired, we measure the loan for potential impairment using discounted cash flows, unless the loan is determined to be collateral dependent. In these cases, we use the current fair value of collateral, less selling costs. Generally, the determination of fair value is established through obtaining external appraisals of the collateral.

The following tables present the recorded investment in, and the aging of, past due and nonaccrual loans, excluding PCI loans, by type of loans for the periods presented.


	December 31, 2018
	30-59 Days Past Due		60 - 89 Days Past Due		Total Past Due and Accruing		Nonaccrual (1) (3)		Current		Total Loans and Financing Receivables
	(Dollars in thousands)
Commercial and industrial	$	820	$	89	$	909	$	7,490	$	993,810	$	1,002,209
SBA		1,172		135		1,307		2,892		345,844		350,043
Real estate:
Commercial real estate
Owner occupied		2,439		350		2,789		589		2,114,612		2,117,990
Non-owner occupied		—		—		—		5,479		3,270,760		3,276,239
Construction
Speculative (2)		—		—		—		—		118,233		118,233
Non-speculative		—		—		—		—		4,549		4,549
SFR mortgage		—		285		285		2,937		293,282		296,504
Dairy & livestock and agribusiness		—		—		—		78		393,765		393,843
Municipal lease finance receivables		—		—		—		—		64,186		64,186
Consumer and other loans		—		—		—		486		127,943		128,429
Total gross loans, excluding PCI loans	$	4,431	$	859	$	5,290	$	19,951	$	7,726,984	$	7,752,225

(1)	As of December 31, 2018, $2.3 million of nonaccruing loans were current, $33,000 were 30-59 days past due, $57,000 were 60-89 days past due and $17.6 million were 90+ days past due.

(2)	Speculative construction loans are generally for properties where there is no identified buyer or renter.

(3)	Includes $12.3 million of nonaccrual loans acquired from CB in the third quarter of 2018.

	December 31, 2017
	30-59 Days Past Due		60-89 Days Past Due		Total Past Due and Accruing		Nonaccrual (1)		Current		Total Loans and Financing Receivables
	(Dollars in thousands)
Commercial and industrial	$	768	$	—	$	768	$	250	$	512,307	$	513,325
SBA		403		—		403		906		120,746		122,055
Real estate:
Commercial real estate
Owner occupied		—		—		—		4,365		1,091,915		1,096,280
Non-owner occupied		—		—		—		2,477		2,277,956		2,280,433
Construction
Speculative (2)		—		—		—		—		60,042		60,042
Non-speculative		—		—		—		—		17,940		17,940
SFR mortgage		—		—		—		1,337		234,865		236,202
Dairy & livestock and agribusiness		—		—		—		829		346,460		347,289
Municipal lease finance receivables		—		—		—		—		70,243		70,243
Consumer and other loans		1		—		1		552		63,676		64,229
Total gross loans, excluding PCI loans	$	1,172	$	—	$	1,172	$	10,716	$	4,796,150	$	4,808,038

(1)	As of December 31, 2017, $3.6 million of nonaccruing loans were current, $ 376 ,000 were 60-89 days past due and $6.8 million were 90+ days past due.

(2)	Speculative construction loans are generally for properties where there is no identified buyer or renter.

Impaired Loans

At December 31, 2018, the Company had impaired loans, excluding PCI loans, of $23.5 million and included $12.3 million of loans acquired from CB in the third quarter of 2018. Impaired loans included $7.5 million of nonaccrual commercial and industrial loans, $6.1

million of nonaccrual commercial real estate loans, $2.9

million of nonaccrual SFR mortgage loans, $2.9 million of nonaccrual SBA loans, $486,000 of nonaccrual

consumer and other loans, and $78,000 of nonaccrual

dairy & livestock and agribusiness loans. These impaired loans included $7.1 million of loans whose terms were modified in a troubled debt restructuring, of which $3.5 million are classified as nonaccrual. The remaining balance of $3.6 million consisted of 13 loans performing according to the restructured terms. The impaired loans had a specific allowance of $561,000 at December 31, 2018. At December 31, 2017, the Company had classified as impaired, loans, excluding PCI loans, with a balance of $15.5 million with a related allowance of $75,000.

The following tables present information for held-for-investment loans, excluding PCI loans, individually evaluated for impairment by type of loans, as and for the periods presented.

	As of and For the Year Ended December 31, 2018
	Recorded Investment		Unpaid Principal Balance		Related Allowance		Average Recorded Investment		Interest Income Recognized
	(Dollars in thousands)
With no related allowance recorded:
Commercial and industrial	$	7,436	$	11,457	$	—	$	7,718	$	7
SBA		3,467		5,746		—		3,919		44
Real estate:
Commercial real estate
Owner occupied		589		705		—		624		—
Non-owner occupied		2,808		4,324		—		4,585		32
Construction
Speculative		—		—		—		—		—
Non-speculative		—		—		—		—		—
SFR mortgage		5,349		6,270		—		5,484		80
Dairy & livestock and agribusiness		—		—		—		—		—
Municipal lease finance receivables		—		—		—		—		—
Consumer and other loans		418		526		—		459		—
Total		20,067		29,028		—		22,789		163
With a related allowance recorded:
Commercial and industrial		189		191		3		203		—
SBA		—		—		—		—		—
Real estate:
Commercial real estate
Owner occupied		—		—		—		—		—
Non-owner occupied		3,143		3,144		478		3,144		—
Construction
Speculative		—		—		—		—		—
Non-speculative		—		—		—		—		—
SFR mortgage		—		—		—		—		—
Dairy & livestock and agribusiness		78		78		12		78		—
Municipal lease finance receivables		—		—		—		—		—
Consumer and other loans		68		100		68		76		—
Total		3,478		3,513		561		3,501		—
Total impaired loans	$	23,545	$	32,541	$	561	$	26,290	$	163

	As of and For the Year Ended December 31, 2017
	Recorded Investment		Unpaid Principal Balance		Related Allowance		Average Recorded Investment		Interest Income Recognized
	(Dollars in thousands)
With no related allowance recorded:
Commercial and industrial	$	440	$	980	$	—	$	548	$	10
SBA		1,530		1,699		—		1,598		47
Real estate:
Commercial real estate
Owner occupied		4,365		4,763		—		4,414		36
Non-owner occupied		3,768		5,107		—		3,951		94
Construction
Speculative		—		—		—		—		—
Non-speculative		—		—		—		—		—
SFR mortgage		4,040		4,692		—		4,119		118
Dairy & livestock and agribusiness		829		1,091		—		988		1
Municipal lease finance receivables		—		—		—		—		—
Consumer and other loans		174		370		—		202		—
Total		15,146		18,702		—		15,820		306
With a related allowance recorded:
Commercial and industrial		—		—		—		—		—
SBA		1		18		1		6		—
Real estate:
Commercial real estate
Owner occupied		—		—		—		—		—
Non-owner occupied		—		—		—		—		—
Construction
Speculative		—		—		—		—		—
Non-speculative		—		—		—		—		—
SFR mortgage		—		—		—		—		—
Dairy & livestock and agribusiness		—		—		—		—		—
Municipal lease finance receivables		—		—		—		—		—
Consumer and other loans		378		391		74		385		—
Total		379		409		75		391		—
Total impaired loans	$	15,525	$	19,111	$	75	$	16,211	$	306

	As of and For the Year Ended December 31, 2016
	Recorded Investment		Unpaid Principal Balance		Related Allowance		Average Recorded Investment		Interest Income Recognized
	(Dollars in thousands)
With no related allowance recorded:
Commercial and industrial	$	730	$	1,646	$	—	$	832	$	26
SBA		3,386		4,189		—		3,709		50
Real estate:
Commercial real estate
Owner occupied		1,797		2,276		—		1,410		70
Non-owner occupied		13,331		15,842		—		13,517		592
Construction
Speculative		—		—		—		—		—
Non-speculative		—		—		—		—		—
SFR mortgage		5,174		6,075		—		5,327		135
Dairy & livestock and agribusiness		747		747		—		692		47
Municipal lease finance receivables		—		—		—		—		—
Consumer and other loans		853		1,423		—		919		18
Total		26,018		32,198		—		26,406		938
With a related allowance recorded:
Commercial and industrial		171		171		114		233		9
SBA		196		212		27		206		14
Real estate:
Commercial real estate
Owner occupied		—		—		—		—		—
Non-owner occupied		—		—		—		—		—
Construction
Speculative		—		—		—		—		—
Non-speculative		—		—		—		—		—
SFR mortgage		—		—		—		—		—
Dairy & livestock and agribusiness		—		—		—		—		—
Municipal lease finance receivables		—		—		—		—		—
Consumer and other loans		—		—		—		—		—
Total		367		383		141		439		23
Total impaired loans	$	26,385	$	32,581	$	141	$	26,845	$	961

The Company recognizes the charge-off of the impairment allowance on impaired loans in the period in which a loss is identified for collateral dependent loans. Therefore, the majority of the nonaccrual loans as of December 31, 2018 and 2017 have already been written down to the estimated net realizable value. An allowance is recorded on impaired loans for the following: nonaccrual loans where a charge-off is not yet processed, nonaccrual SFR mortgage loans where there is a potential modification in process, or on smaller balance non-collateral dependent loans.

Reserve for Unfunded Loan Commitments

The allowance for off-balance sheet credit exposure relates to commitments to extend credit, letters of credit and undisbursed funds on lines of credit. The Company evaluates credit risk associated with the off-balance sheet loan commitments at the same time it evaluates credit risk associated with the loan and lease portfolio.

As a result of the acquisition of CB, the reserve for unfunded loan commitments increased by $2.9 million in the third quarter of 2018. In addition, the

Company recorded a recapture of the reserve for unfunded loan commitments of $250,000 for the year ended December 31, 2018, compared with a recapture of provision for unfunded loan commitments of $400,000 for the year ended December 31, 2017 and a recapture of provision for unfunded loan commitments of $450,000 for the year ended December 31, 2016. As of December 31, 2018 and December 31, 2017, the balance in this reserve was $9.0 million and $6.3 million, respectively, and was included in other liabilities.

Troubled Debt Restructurings

Loans that are reported as TDRs are considered impaired and charge-off amounts are taken on an individual loan basis, as deemed appropriate. The majority of restructured loans are loans for which the terms of repayment have been renegotiated, resulting in a reduction in interest rate or deferral of principal. Refer to Note 3 —

Summary of Significant Accounting Policies, Troubled Debt Restructurings

, included herein.

As of December 31, 2018, there were $7.1 million of loans classified as a TDR, of which $3.5 million were nonperforming and $3.6 million were performing. TDRs on accrual status are comprised of loans that were accruing interest at the time of restructuring or have demonstrated repayment performance in compliance with the restructured terms for a sustained period and for which the Company anticipates full repayment of both principal and interest. At December 31, 2018, performing TDRs were comprised of nine SFR mortgage loans of $2.4 million, one SBA loan of $575,000,

one commercial real estate loan of $473,000,

and two commercial and industrial loans of $135,000.

The majority of TDRs have no specific allowance allocated as any impairment amount is normally charged off at the time a probable loss is determined. We have allocated $490,000 and $1,000 of specific allowance to TDRs as of December 31, 2018 and December 31, 2017, respectively.

The following table provides a summary of the activity related to TDRs for the periods presented.


	For the Year Ended December 31,
	2018			2017
	(Dollars in thousands)
Performing TDRs:
Beginning balance	$	4,809		$	19,233
New modifications		311			3,143
Payoffs/payments, net and other		(1,526	)		(14,752	)
TDRs returned to accrual status		-			329
TDRs placed on nonaccrual status		-			(3,144	)
Ending balance	$	3,594		$	4,809
Nonperforming TDRs:
Beginning balance	$	4,200		$	1,626
New modifications		316			2,066
Charge-offs		-			-
Payoffs/payments, net and other		(1,007	)		(2,307	)
TDRs returned to accrual status		-			(329	)
TDRs placed on nonaccrual status		-			3,144
Ending balance	$	3,509		$	4,200
Total TDRs	$	7,103		$	9,009

The following tables summarize loans modified as troubled debt restructurings for the periods presented.

Modifications (1)

	For the Year Ended December 31, 2018
	Number of Loans		Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment		Outstanding Recorded Investment at December 31, 2018		Financial Effect Resulting From Modifications (2)
	(Dollars in thousands)
Commercial and industrial:
Interest rate reduction		-	$	-	$	-	$	-	$	-
Change in amortization period or maturity		1		38		38		20		-
Real estate:
Commercial real estate:
Owner occupied
Interest rate reduction		-		-		-		-		-
Change in amortization period or maturity		-		-		-		-		-
Non-owner occupied
Interest rate reduction		-		-		-		-		-
Change in amortization period or maturity		-		-		-		-		-
SFR mortgage:
Interest rate reduction		-		-		-		-		-
Change in amortization period or maturity		1		311		311		300		-
Dairy & livestock and agribusiness:
Interest rate reduction		-		-		-		-		-
Change in amortization period or maturity		-		-		-		-		-
Consumer:
Interest rate reduction		-		-		-		-		-
Change in amortization period or maturity		1		278		278		267		-
Total loans		3	$	627	$	627	$	587	$	-

	For the Year Ended December 31, 2017
	Number of Loans		Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment		Outstanding Recorded Investment at December 31, 2017		Financial Effect Resulting From Modifications (2)
	(Dollars in thousands)
Commercial and industrial:
Interest rate reduction		-	$	-	$	-	$	-	$	-
Change in amortization period or maturity		-		-		-		-		-
Real estate:
Commercial real estate:
Owner occupied
Interest rate reduction		-		-		-		-		-
Change in amortization period or maturity		1		3,143		3,143		3,143		-
Non-owner occupied
Interest rate reduction		-		-		-		-		-
Change in amortization period or maturity		-		-		-		-		-
SFR mortgage:
Interest rate reduction		-		-		-		-		-
Change in amortization period or maturity		-		-		-		-		-
Dairy & livestock and agribusiness:
Interest rate reduction		-		-		-		-		-
Change in amortization period or maturity		1		1,984		1,984		78		-
Consumer:
Interest rate reduction		-		-		-		-		-
Change in amortization period or maturity		-		-		-		-		-
Total loans		2	$	5,127	$	5,127	$	3,221	$	-

	For the Year Ended December 31, 2016
	Number of Loans		Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment		Outstanding Recorded Investment at December 31, 2016		Financial Effect Resulting From Modifications (2)
	(Dollars in thousands)
Commercial and industrial:
Interest rate reduction		1	$	112	$	112	$	103	$	-
Change in amortization period or maturity		-		-		-		-		-
SBA:
Interest rate reduction		-		-		-		-		-
Change in amortization period or maturity		2		214		214		196		28
Real estate:
Commercial real estate:
Owner occupied
Interest rate reduction		-		-		-		-		-
Change in amortization period or maturity		-		-		-		-		-
Non-owner occupied
Interest rate reduction		1		759		759		756		-
Change in amortization period or maturity		-		-		-		-		-
Dairy & livestock and agribusiness:
Interest rate reduction		-		-		-		-		-
Change in amortization period or maturity		-		-		-		-		-
SFR mortgage:
Interest rate reduction		-		-		-		-		-
Change in amortization period or maturity		3		201		201		185		-
Total loans		7	$	1,286	$	1,286	$	1,240	$	28

(1)	The tables above exclude modified loans that were paid off prior to the end of the period.

(2)	Financial effects resulting from modifications represent charge-offs and specific allowance recorded at modification date.

As of December 31, 2018, there were no loans that were modified as a TDR within the previous 12 months that subsequently defaulted. As of December 31, 2017, there was one commercial real estate loan with an outstanding balance of $3.1 million loans that were previously modified as a troubled debt restructuring within the previous 12 months that

subsequently

defaulted

. As of December 31, 2016, there were no loans that were previously modified as a troubled debt restructuring within the previous 12 months that subsequently defaulted during the year ended December 31, 2016

Other Real Estate Owned

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Other Real Estate Owned

OTHER REAL ESTATE OWNED

The following table summarizes the activity related to total OREO for the periods presented.

	For the Year Ended December 31,
	2018			2017
	(Dollars in thousands)
Balance, beginning of period	$	4,527		$	4,527
Additions		420			—
Dispositions		(4,527	)		—
Valuation adjustments		—			—
Balance, end of period	$	420		$	4,527

Goodwill and Other Intangible Assets

12 Months Ended

Dec. 31, 2018

Goodwill and Other Intangible Assets

GOODWILL AND OTHER INTANGIBLE ASSETS

The following table presents the changes in the carrying amount of goodwill for the periods presented.

	As of and for the Year Ended December 31,
	2018		2017
	(Dollars in thousands)
Balance, beginning of period	$	116,564	$	89,533
Additions due to acquisitions		549,975		27,031
Balance, end of period	$	666,539	$	116,564

The following summarizes activity of amortizable core deposit intangible (“CDI”) assets for the periods presented.

	As of and For the Year Ended December 31,
	2018							2017
	Gross CDI Amount		Accumulated Amortization			Net CDI Amount		Gross CDI Amount		Accumulated Amortization			Net CDI Amount
	(Dollars in thousands)
Balance of intangible assets, beginning of period	$	41,097	$	(34,259	)	$	6,838	$	37,940	$	(32,930	)	$	5,010
Additions due to acquisitions		52,200							3,157
Balance of intangible assets, end of period	$	93,297	$	(39,513	)	$	53,784	$	41,097	$	(34,259	)	$	6,838
Aggregate amortization expense:
For year ended December 31,	$	5,254						$	1,329
Estimated Amortization Expense:
For the year ending December 31, 2019		10,798
For the year ending December 31, 2020		9,352
For the year ending December 31, 2021		8,240
For the year ending December 31, 2022		7,126
Thereafter		18,268

At December 31, 2018 the weighted average remaining life of intangible assets is approximately 3.21 years.

Premises and Equipment

12 Months Ended

Dec. 31, 2018

Property, Plant and Equipment [Abstract]

Premises and Equipment

10.

PREMISES AND EQUIPMENT

Premises and equipment were comprised of the following for the periods presented.

	As of December 31,
	2018			2017
	(Dollars in thousands)
Land	$	19,929		$	14,489
Bank premises		73,188			65,215
Furniture and equipment		29,020			25,610
Premises and equipment, gross		122,137			105,314
Accumulated depreciation and amortization		(63,944	)		(59,148	)
Premises and equipment, net	$	58,193		$	46,166

In 2016, a decision was made to relocate our operations and technology center to a new location to allow for future growth. A new location was identified and acquired in 2016 with a plan of relocation in the second quarter of 2017. In conjunction with the purchase of this new building, management pursued a plan to sell the existing building. In accordance with GAAP, this building was transferred from our long-lived asset portfolio to held-for-sale which resulted in an impairment loss of $2.6 million for the year ended December 31, 2016. At December 31, 2016, the fair value, net of selling costs, of this held-for-sale asset was $3.4 million. This asset was sold in the third quarter of 2017, which resulted in a net gain of $542,000. 2017 also included a $2.9 million net gain from an eminent domain condemnation of one of our banking center buildings that had a net book value of $450,000 at the time of the condemnation.

Leases

The Company leases land and buildings under operating leases for varying periods extending to 2028, at which time the Company can exercise options that could extend certain leases through 2039.

The future minimum annual rental payments required for leases that have initial or remaining noncancelable lease terms in excess of one year as of December 31, 2018, excluding property taxes and insurance, are as follows:

	As of December 31, 2018
Year:	(Dollars in thousands)
2019	$	9,261
2020		5,918
2021		4,077
2022		2,819
2023		1,179
Thereafter		1,707
Total	$	24,961

Total rental expense for the Company was approximately $7.7 million, $5.9 million and $5.6 million for the years ended December 31, 2018, 2017 and 2016, respectively.

Other Assets

12 Months Ended

Dec. 31, 2018

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Other Assets

11.

OTHER ASSETS

Other assets were comprised of the following for the periods presented.

	As of December 31,
	2018		2017
	(Dollars in thousands)
Prepaid expenses	$	6,393	$	4,538
Interest rate swaps		1,938		3,211
Affordable housing investments		15,995		5,977
Other investments		33,031		801
Other assets		10,450		10,790
Total	$	67,807	$	25,317

Income Taxes

12 Months Ended

Dec. 31, 2018

Income Tax Disclosure [Abstract]

Income Taxes

12.

INCOME TAXES

New tax legislation, referred to as the Tax Reform Act, was enacted on December 22, 2017. ASC 740, Accounting for Income Taxes, requires companies to recognize the effect of tax law changes in the period of enactment. Beginning in 2018, the Tax Reform Act reduces the federal tax rate for corporations from 35% to 21% and changes or limits certain tax deductions. During the fourth quarter of 2017, a $13.2 million one-time charge to income

tax expense was recorded due to the tax rate reduction and re-measurement of our deferred taxes assets (“DTA”).

The current and deferred amounts of income tax expense consist of the following.

	For the Year Ended December 31,
	2018		2017		2016
	(Dollars in thousands)
Current provision:
Federal	$	31,055	$	44,153	$	41,195
State		20,546		17,151		17,944
		51,601		61,304		59,139
Deferred provision:
Federal		5,158		20,926		1,208
State		2,353		2,154		510
		7,511		23,080		1,718
Total	$	59,112	$	84,384	$	60,857

Income tax asset consists of the following.

	As of December 31,
	2018		2017
	(Dollars in thousands)
Current:
Federal	$	12,303	$	11,713
State		6,800		2,946
		19,103		14,659
Deferred:
Federal		27,334		16,557
State		15,737		8,830
		43,071		25,387
Total	$	62,174	$	40,046

Temporary differences between the amounts reported in the financial statements and the tax bases of assets and liabilities resulted in deferred taxes.

The components of the net deferred tax asset are as follows.


	As of December 31,
	2018		2017
	(Dollars in thousands)
Deferred tax assets:
Bad debt and credit loss deduction	$	22,402	$	19,911
Net operating loss carryforward		141		207
Deferred compensation		6,109		5,501
PCI loans		2,556		3,098
California franchise tax		837		1,618
Accrued expense		4,865		1,365
Unrealized loss on investment securities, net		7,508		-
Acquired loan discounts		25,555		2,081
Other, net		2,624		1,272
Gross deferred tax asset		72,597		35,053
Deferred tax liabilities:
Depreciation		4,440		975
Intangibles - acquistions		19,843		3,404
FHLB Stock		2,527		2,400
Deferred income		2,716		2,112
Unrealized gain on investment securities, net		-		775
Gross deferred tax liability		29,526		9,666
Net deferred tax asset	$	43,071	$	25,387

Annual Effective Tax Rate

The annual consolidated effective tax rate for the periods presented, is reconciled to the U.S. statutory income rate as follows.

	For the Year Ended December 31,
	2018						2017						2016
	Amount			Percent			Amount			Percent			Amount			Percent
	(Dollars in thousands)
Federal income tax at statutory rate	$	44,334			21.0	%	$	66,078			35.0	%	$	56,800			35.0	%
State franchise taxes, net of federal benefit		17,905			8.5	%		12,903			6.9	%		11,299			7.0	%
Tax-exempt income		(2,991	)		-1.4	%		(4,450	)		-2.4	%		(5,848	)		-3.6	%
Tax credits		(1,451	)		-0.7	%		(1,096	)		-0.6	%		(846	)		-0.5	%
Deferred tax asset revaluation adjustment		-			-			13,208			7.0	%		-			-
Other, net		1,315			0.6	%		(2,259	)		-1.2	%		(548	)		-0.4	%
Provision for income taxes	$	59,112			28.0	%	$	84,384			44.7	%	$	60,857			37.5	%

There were no unrecognized tax benefits at December 31,

2018

and 2017.

The Company records interest and penalties related to uncertain tax positions as part of other operating expense. We do not expect the total amount of unrecognized tax benefits to significantly increase or decrease within the next twelve months.

The Company is subject to federal income tax and franchise tax of the state of California. Our federal income tax returns for the years ended December 31, 2014 through 2018 are open to audit by the federal authorities and our California state tax returns for the years ended December 31, 2013 through 2018 are open to audit by state authorities.

Deposits

12 Months Ended

Dec. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Deposits

13.

DEPOSITS

The composition of deposits is summarized for the periods presented in the table below.

	As of December 31,
	2018					2017
	Amount		Percent			Amount		Percent
	(Dollars in thousands)
Noninterest-bearing deposits	$	5,204,787		58.96	%	$	3,846,436		58.75	%
Interest-bearing deposits:
Investment checking		460,972		5.22	%		433,971		6.63	%
Money market		2,236,018		25.33	%		1,517,050		23.17	%
Savings		393,769		4.46	%		364,049		5.56	%
Time deposits		531,944		6.03	%		385,347		5.89	%
Total deposits	$	8,827,490		100.00	%	$	6,546,853		100.00	%

Time deposits with balances of $250,000 or more amounted to approximately $125.4 million and $

108.5 million at December 31, 2018 and 2017, respectively. Interest expense on such deposits amounted to approximately $1.1 million, $545,000 and $444,000, for the years ended December 31, 2018, 2017 and 2016, respectively.

At December

2018

, the scheduled maturities of time certificates of deposit are as follows.

	December 31, 2018
Year of maturity:	(Dollars in thousands)
2019	$	398,735
2020		70,898
2021		46,710
2022		5,320
2023 and thereafter		10,281
Total	$	531,944

Borrowings

12 Months Ended

Dec. 31, 2018

Debt Disclosure [Abstract]

Borrowings

14.

BORROWINGS

Customer Repurchase Agreements

The Bank offers a repurchase agreement product to its customers. This product, known as Citizens Sweep Manager, sells our investment securities overnight to our customers under an agreement to repurchase them the next day at a price which reflects the market value of the use of funds by the Bank for the period concerned. These repurchase agreements are signed with customers who want to invest their excess deposits, above a pre-determined balance in a demand deposit account, in order to earn interest. As of December 31, 2018, total funds borrowed under these agreements were $

442.3 million with a weighted average interest rate of 0.39%, compared to $553.8 million with a weighted average rate of 0.30%.

Federal Home Loan Bank Advances

At December 31, 2018 and 2017, there were no outstanding FHLB advances.

At December 31, 2018, $5.71 billion of loans and $

1.66

billion of investment securities, at carrying value, were pledged to secure public deposits, short and long-term borrowings, and for other purposes as required or permitted by law.

Other Borrowings

At December 31, 2018, the Bank had $280.0 million short-term borrowings with the FHLB at a cost of 2.53%, compared to no short-term borrowings with the FHLB at December 31, 2017.

Junior Subordinated Debentures

On January 31, 2006, CVB Statutory Trust III completed a $25,000,000 offering of Trust Preferred Securities and used the gross proceeds from the offering and other cash totaling $25,774,000 to purchase a like amount of junior subordinated debentures of the Company. The junior subordinated debentures were issued concurrent with the issuance of the Trust Preferred Securities. The interest on junior subordinated debentures, paid by the Company to CVB Statutory Trust III, represents the sole revenues of CVB Statutory Trust III and the sole source of dividend distributions to the holders of the Trust Preferred Securities. The Company has fully and conditionally guaranteed all of CVB Statutory Trust III’s obligations under the Trust Preferred Securities. The Company has the right, assuming no default has occurred, to defer payments of interest on the junior subordinated debenture at any time for a period not to exceed 20 consecutive quarters. The Trust Preferred Securities will mature on March 15, 2036, but became callable in part or in total on March 15, 2011 by CVB Statutory Trust III. The Trust Preferred Securities have a variable per annum rate equal to LIBOR (as defined in the indenture dated as of January 31, 2006 (“Indenture”) between the Company and U.S. Bank National Association, as debenture trustee) plus 1.38% (the “Variable Rate”). As of December 31, 2018, these securities continue to be outstanding.

Commitments and Contingencies

12 Months Ended

Dec. 31, 2018

Commitments and Contingencies

15.

COMMITMENTS AND CONTINGENCIES

Commitments

At December 31, 2018 and 2017, the Bank had commitments to extend credit of approximately $1.69 billion and $924.5 million, respectively, and obligations under letters of credit of $54.3 million and $37.6 million, respectively. Commitments to extend credit are agreements to lend to customers, provided there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Commitments are generally variable rate, and many of these commitments are expected to expire without being drawn upon. As such, the total commitment amounts do not necessarily represent future cash requirements. The Bank uses the same credit underwriting policies in granting or accepting such commitments or contingent obligations as it does for on-balance-sheet instruments, which consist of evaluating customers’ creditworthiness individually. The Bank had a reserve for unfunded loan commitments of $9.0 million as of December 31, 2018 and $6.3 million as of December 31, 2017 included in other liabilities.

Standby letters of credit are conditional commitments issued by the Bank to guarantee the financial performance of a customer to a third party. Those guarantees are primarily issued to support private borrowing or purchase arrangements. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. When deemed necessary, the Bank holds appropriate collateral supporting those commitments. Management does not anticipate any material losses as a result of these transactions.

At December 31, 2018, the Bank has available lines of credit totaling $3.96 billion from correspondent banks, FHLB and Federal Reserve Bank of which $3.59 billion were secured.

Other Contingencies

The Company and its subsidiaries are parties to various lawsuits and threatened lawsuits in the ordinary and non-ordinary course of business. From time to time, such lawsuits and threatened lawsuits may include, but are not limited to, actions

involving

securities litigation, employment matters,

wage-hour and labor law claims, consumer, lender liability claims and negligence claims, some of which may be styled as “class action” or representative cases. Some of these lawsuits may be similar in nature to other lawsuits pending against the Company’s competitors.

The

Company is a defendant and cross-complainant in an action entitled Edward A. Dunagan

et al

v. Citizens Business Bank, as successor to American Security Bank (ASB), Case No. CVDS1408287, filed in the Superior Court for San Bernardino County. The complaint was initially filed in May, 2014 against ASB, which was acquired during the same month by CBB, and a Second Amended Complaint (SAC) was filed on September 9, 2015, naming CBB as the primary defendant. The case arises out of a number of defaulted commercial real estate loans originally made by ASB to the Dunagans and various entities owned by the Dunagans (Dunagan Parties), and the SAC includes claims by the Dunagans (1) contesting their liabilities under their personal guarantees for deficiencies on certain of the defaulted loans, (2) attacking the validity of ASB’s foreclosures on certain properties owned by the Dunagan Parties, and (3) claiming emotional distress caused by ASB’s allegedly wrongful actions in connection with such foreclosures. The Dunagans sought compensatory damages in excess of $2 million plus punitive damages. ASB/CBB filed a cross-complaint against the Dunagans alleging breach of guaranty and demanding additional damages. A bench trial on the respective claims by the Dunagans and ASB/CBB took place in late July and early August, 2018.

On November 7, 2018, the Court issued a statement of decision finding in favor of the Dunagans and against ASB on all three claims made by the plaintiffs enumerated above, denying ASB’s claims under the cross-complaint, and awarding damages and attorney’s fees and costs to the Dunagans in an aggregate amount of approximately $1.34 million. The Company has filed to appeal this decision. The Company also believes that the bankers professional liability insurance policy previously obtained by ASB (which provides for a $5 million per claim limit subject to a $100,000

deductible) may cover all or a substantial portion of any final monetary award to the plaintiffs. The Company continues to believe that this adverse decision and any monetary award ultimately payable by CBB are not expected to have a material adverse impact on the Company’s results of operations, financial condition or cash flows.

For lawsuits where the Company has determined that a loss is both probable and reasonably estimable, a liability representing the best estimate of the Company’s financial exposure based on known facts has been recorded in accordance with FASB guidance over loss contingencies (ASC 450). However, as a result of inherent uncertainties in judicial interpretation and application of a myriad of laws applicable to the Company’s business, and the unique, complex factual issues presented in any given lawsuit, the Company often cannot determine the probability of loss or estimate the amount of damages which a plaintiff might successfully prove if the Company were found to be liable. For lawsuits or threatened lawsuits where a claim has been asserted or the Company has determined that it is probable that a claim will be asserted, and there is a reasonable possibility that the outcome will be unfavorable, the Company will disclose the existence of the loss contingency, even if the Company is not able to make an estimate of the possible loss or range of possible loss with respect to the action or potential action in question, unless the Company believes that the nature, potential magnitude or potential timing (if known) of the loss contingency is not reasonably likely to be material to the Company’s liquidity, consolidated financial position, and/or results of operations.

Our accruals and disclosures for loss contingencies are reviewed quarterly and adjusted as additional information becomes available. We disclose a loss contingency and/or the amount accrued if we believe it is reasonably likely to be material or if we believe such disclosure is necessary for our financial statements to not be misleading. If we determine that an exposure to loss exists in excess of an amount previously accrued or disclosed, we assess whether there is at least a reasonable possibility that a loss, or additional loss, may have been incurred, and we adjust our accruals and disclosures accordingly.

We do not presently believe that the ultimate resolution of any lawsuits currently pending against the Company will have a material adverse effect on the Company’s results of operations, financial condition, or cash flows. The outcome of litigation and other legal and regulatory matters is inherently uncertain, however, and it is possible that one or more of the legal matters currently pending or threatened against the Company could have a material adverse effect on our results of operations, financial condition or cash flows.

Employee Benefit Plans

12 Months Ended

Dec. 31, 2018

Postemployment Benefits [Abstract]

Employee Benefit Plans

16.

EMPLOYEE BENEFIT PLANS

Deferred Compensation Plans

As of December 31, 2018, the Company has various deferred compensation plans, and severance arrangements it assumed through the acquisition of other banks in prior years. These plans require the Company to make periodic payments to former employees upon retirement, upon a change in control, and in certain instances, to beneficiaries of former employees upon death. Payments made by the Company under these agreements totaled approximately $1.4 million, $1.6 million, and $610,000 for each of the years ended December 31, 2018, 2017 and 2016, respectively. The total expense recorded by the Company for these deferred compensation agreements was approximately $1.1 million, $1.2 million, and $684,000 for each of the years ended December 31, 2018, 2017 and 2016, respectively.

On December 22, 2006, the Company approved a deferred compensation plan for its President and Chief Executive Officer, Christopher D. Myers. Under the plan, which became effective on January 1, 2007, Mr. Myers may defer up to 75% of his base salary and up to 100% of his bonus for each calendar year in which the Plan is effective. The Company has the discretion to make additional contributions to the Plan for the benefit of Mr. Myers. No discretionary payments were made by the Company during the years ended December 31, 2018, 2017 and 2016.

On March 31, 2007, the Company approved the Executive Non-qualified Excess Plan, a deferred compensation plan for certain management employees to provide a means by which they may elect to defer receipt of compensation in order to provide retirement benefits. The plan is intended to be unfunded and primarily serve the purpose of providing deferred compensation benefits for a select group of employees. The Bank, however, does fund the cost of these plans through the purchase of life insurance policies, which are recorded in other assets of the consolidated balance sheets. At December 31, 2018 and 2017, the amount of deferred compensation liability was $2.4 million and $2.1 million, respectively.

401(k) and Profit Sharing Plan

The Bank sponsors a 401(k) and profit-sharing plan for the benefit of its employees. Employees are eligible to participate in the plan immediately upon hire. Employees may make contributions to the plan under the plan’s 401(k) component. The Bank contributes 3%, non-matching, to the plan to comply with ERISA’s safe harbor provisions. The Bank may make additional contributions under the plan’s profit-sharing component, subject to certain limitations. The Bank’s total contributions are determined by the Board of Directors and amounted to approximately $3.5 million for 2018, $3.2 million for 2017, and $2.8 million for 2016.

Earnings Per Share Reconciliation

12 Months Ended

Dec. 31, 2018

Earnings Per Share [Abstract]

Earnings Per Share Reconciliation

17.

EARNINGS PER SHARE RECONCILIATION

Basic earnings per common share are computed by dividing income allocated to common stockholders by the weighted-average number of common shares outstanding during each period. The computation of diluted earnings per common share considers the number of shares issuable upon the assumed exercise of outstanding common stock options. Antidilutive common shares are not included in the calculation of diluted earnings per common share. For the years ended December 31, 2018, 2017 and 2016, shares deemed to be antidilutive, and thus excluded from the computation of earnings per common share were 160,000, 9,000 and 291,000, respectively.

The table below shows earnings per common share and diluted earnings per common share, and reconciles the numerator and denominator of both earnings per common share calculations.


	For the Year Ended December 31,
	2018		2017		2016
	(In thousands, except per share amounts)
Earnings per common share:
Net earnings	$	152,003	$	104,411	$	101,429
Less: Net earnings allocated to restricted stock		429		382		421
Net earnings allocated to common shareholders	$	151,574	$	104,029	$	101,008
Weighted average shares outstanding		121,670		109,409		107,282
Basic earnings per common share	$	1.25	$	0.95	$	0.94
Diluted earnings per common share:
Net income allocated to common shareholders	$	151,574	$	104,029	$	101,008
Weighted average shares outstanding		121,670		109,409		107,282
Incremental shares from assumed exercise of outstanding options		287		398		405
Diluted weighted average shares outstanding		121,957		109,807		107,687
Diluted earnings per common share	$	1.24	$	0.95	$	0.94

Stock-Based Compensation Plans

12 Months Ended

Dec. 31, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock Based Compensation Plans

18.

STOCK-BASED COMPENSATION PLANS

In May

2018, the shareholders approved the 2018 Equity Plan which authorizes the issuance of up to

9,000,000

shares of CVB’s common stock for eligible participants, which include all of the Company’s employees, officers, and directors, and expires in 2028. The plan authorizes the issuance of a variety of types of equity awards, which include incentive stock options, non-qualified stock options, restricted stock awards (“RSAs”), restricted stock units (“RSUs”), and other stock-based awards. The 2018 Equity Plan replaced the 2008 Equity Incentive Plan. No further grants will be made under the 2008 Equity Incentive Plan, but shares may continue to be issued under such plan pursuant to grants previously made. As of December 31, 2018, we have 622,620 outstanding options, unvested RSAs and RSUs under our 2008 Equity Incentive Plan.

Stock Options

The Company expensed $400,281, $399,000, and $485,000, for the years ended December 31, 2018, 2017 and 2016, respectively.

The estimated fair value of the options granted during 2018 and prior years was calculated using the Black-Scholes options pricing model. There were 140,500, 11,500 and 121,500 options granted during 2018, 2017 and 2016, respectively. The options will vest, in equal installments, over a five-year period.

The fair value of each stock option granted in

2018

2017

and

2016

, was estimated on the date of grant using the following weighted-average assumptions.

	For the Year Ended December 31,
	2018		2017		2016
Dividend yield		2.4%		2.2%		2.9%
Volatility		25.4%		29.6%		33.1%
Risk-free interest rate		2.9%		1.8%		1.2%
Expected life		5.4 years		5.6 years		5.6 years
Weighted average grant date fair value	$	5.08	$	5.17	$	3.96

The expected volatility is solely based on the daily historical stock price volatility over the expected option life. The expected life of options granted is derived from the output of the option valuation model and represents the period of time an optionee will hold an option before exercising it. The risk-free rate for periods within the contractual life of the option is based on the U.S. Treasury five-year constant maturity yield curve in effect at the time of the grant. In connection with the adoption of ASU 2016-09

in 2017,

the Company elected to account for forfeitures as they occur, rather than to estimate forfeitures over the vesting period.

The following table presents option activity under the Company’s stock option plans as of and for the year ended December 31, 2018.

	Number of Stock Options Outstanding			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term		Aggregate Intrinsic Value
	(In thousands)					(In years)		(In thousands)
Outstanding at January 1, 2018		588		$	13.12
Granted		141			23.73
Exercised		(167	)		10.21
Forfeited or expired		(30	)		15.07
Outstanding at December 31, 2018		532		$	16.73		6.26	$	2,368
Vested or expected to vest at December 31, 2018		514		$	16.73		6.23	$	2,303
Exercisable at December 31, 2018		275		$	13.29		4.31	$	1,915

The total intrinsic value of options exercised during the years ended December 31, 2018, 2017 and 2016 was $2.2 million, $3.8 million and $3.9 million, respectively.

As of December 31, 2018, there was a total of $957,000 in unrecognized compensation cost related to nonvested options granted under the Plan. That cost is expected to be recognized over a weighted-average period of approximately 2.9 years. The total fair value of options vested was $364,000, $505,000 and $489,000 during 2018, 2017 and 2016, respectively. Cash received from stock option exercises was $1.7 million, $2.7 million and $5.2 million, in 2018, 2017 and 2016, respectively.

At December 31, 2018, options for the purchase of 531,916 shares of CVB’s common stock were outstanding under the above plans, of which options to purchase 275,416 shares were exercisable at prices ranging from $7.68 to $23.69.

The Company has a policy of issuing new shares to satisfy share option exercises.

Restricted Stock

Awards and Restricted Stock Units

The Company granted 424,000, 73,000 and 166,500 restricted stock awards during 2018, 2017 and 2016 respectively. The weighted average grant date fair value of RSAs and RSUs granted in 2018, 2017 and 2016 was $23.84 per share, $21.59 per share and $16.89 per share, respectively. These awards will vest, in equal installments, over a period of three or five years.

Compensation cost is recognized over the requisite service period, which is three or five years, and amounted to $3.1 million, $2.6 million and $2.3 million during the years ended December 31, 2018, 2017 and 2016, respectively. Total unrecognized compensation cost related to

RSAs and RSUs

was $8.8 million at December 31, 2018.

The table below summarizes activity related to the Company’s non-vested

RSAs and RSUs

for the year ended December 31, 2018.

	Shares			Weighted Average Fair Value
	(In thousands)
Nonvested at January 1, 2018		376		$	16.82
Granted		424			23.84
Vested		(158	)		16.50
Forfeited		(18	)		20.57
Nonvested at December 31, 2018		624		$	21.56

Under the 2018 Equity Incentive Plan, 8,019,000 shares of common stock were available for the granting of future stock-based awards as of December 31, 2018.

Regulatory Matters

12 Months Ended

Dec. 31, 2018

Regulatory Matters

19.

REGULATORY MATTERS

The Company (on a consolidated basis) and the Bank are subject to various regulatory capital requirements administered by the federal banking regulatory agencies. Failure to meet minimum capital requirements can initiate certain mandatory, and possibly additional discretionary, actions by regulators that, if undertaken, could have a direct, material effect on the Company’s and the Bank’s financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company and Bank must meet specific capital guidelines that involve quantitative measures of assets, liabilities, and certain off-balance-sheet items as calculated under regulatory accounting practices. The capital amounts and classification are also subject to qualitative judgment by the regulators about components, risk-weightings, and other factors. Prompt corrective action provisions are not applicable to bank holding companies.

Effective January 1, 2015, the Company and the Bank became subject to a new regulatory capital measure called Common Equity Tier 1 (“CET1”) to risk-weighted assets which was implemented as a result of the “Basel III” regulatory capital reforms and changes required by the Dodd-Frank Act.

Basel III also introduces a new “capital conservation buffer,” composed entirely of CET1, on top of minimum risk-weighted asset ratios. The capital conservation buffer is designed to absorb losses during periods of economic stress. Banking institutions with a ratio of CET1 to risk-weighted assets above the minimum requirement but below the capital conservation buffer will face constraints on dividends, equity repurchases and payment of discretionary bonuses based on the amount of the shortfall. The implementation of the capital conservation buffer began on January 1, 2016 at 0.625% and will be phased in over a four-year period (increasing by that amount on each subsequent January 1, until it reaches 2.5% on January 1, 2019). Thus, when fully phased in on January 1, 2019, the Bank will be required to maintain this additional capital conservation buffer of 2.5% of CET1.

Quantitative measures established by regulation to ensure capital adequacy require the Company and the Bank to maintain minimum amounts and ratios (set forth in the table below) of total capital, Tier 1 capital and CET1 capital to risk-weighted assets, and of Tier 1 capital to average assets. Management believes that, as of December 31, 2018 and 2017, the Company and the Bank meet all capital adequacy requirements to which they are subject.

As of December 31, 2018 and 2017, the most recent notifications from the FDIC categorized the Bank as well capitalized under the regulatory framework for prompt corrective action. To be categorized as well capitalized, the minimum total risk-based, Tier 1 risk-based, CET1 risk-based, and Tier 1 leverage (tangible Tier 1 capital divided by average total assets) ratios as set forth in the table below must be maintained. There are no conditions or events since said notification that management believes have changed the Bank’s category.

As of December 31, 2018 and 2017, the Company had $25.0 million of trust-preferred securities, which were included in Tier 1 capital for regulatory purposes, respectively. The following table summarizes regulatory capital amounts and ratios for the Company and the Bank as

of December 31, 2018 and 2017.

												To Be Well
						For Capital						Capitalized under Prompt Corrective
	Actual					Adequacy Purposes						Action Provisions
	Amount		Ratio			Amount			Ratio			Amount			Ratio
	(Dollars in thousands)
As of December 31, 2018:
Total Capital (to Risk-Weighted Assets)
Company	$	1,263,800		14.13	%	$	715,283	>		8.00	%					N/A
Bank	$	1,253,219		14.03	%	$	714,601	>		8.00	%	$	893,251	>		10.00	%
Tier 1 Capital (to Risk-Weighted Assets)
Company	$	1,191,228		13.32	%	$	536,462	>		6.00	%					N/A
Bank	$	1,180,647		13.22	%	$	535,951	>		6.00	%	$	714,601	>		8.00	%
Common equity Tier 1 capital ratio
Company	$	1,166,228		13.04	%	$	402,347	>		4.50	%					N/A
Bank	$	1,180,647		13.22	%	$	401,963	>		4.50	%	$	580,613	>		6.50	%
Tier 1 Capital (to Average- Assets)
Company	$	1,191,228		10.98	%	$	433,834	>		4.00	%					N/A
Bank	$	1,180,647		10.90	%	$	433,403	>		4.00	%	$	541,754	>		5.00	%
As of December 31, 2017:
Total Capital (to Risk-Weighted Assets)
Company	$	1,039,060		18.01	%	$	461,574	>		8.00	%					N/A
Bank	$	1,029,126		17.86	%	$	461,037	>		8.00	%	$	576,296	>		10.00	%
Tier 1 Capital (to Risk-Weighted Assets)
Company	$	973,169		16.87	%	$	346,180	>		6.00	%					N/A
Bank	$	963,235		16.71	%	$	345,778	>		6.00	%	$	461,037	>		8.00	%
Common equity Tier 1 capital ratio
Company	$	948,210		16.43	%	$	259,635	>		4.50	%					N/A
Bank	$	963,235		16.71	%	$	259,333	>		4.50	%	$	374,592	>		6.50	%
Tier 1 Capital (to Average- Assets)
Company	$	973,169		11.88	%	$	327,680	>		4.00	%					N/A
Bank	$	963,235		11.77	%	$	327,397	>		4.00	%	$	409,246	>		5.00	%

In addition,

the

California

Financial

Code

limits the amount of dividends a bank can pay without obtaining prior approval from bank regulators. Under this law, the Bank could, as of December 31, 2018, declare and pay additional dividends of approximately $184.0 million.

The entire disclosure for banks, savings institutions, and credit unions, for regulatory capital requirements imposed by the Federal Reserve System (FRB), the Federal Deposit Insurance Corporation (FDIC), the Office of Thrift Supervision (OTS) or for any state imposed capital requirements, as applicable. The disclosure may include (1) a description of regulatory capital requirements (a) for capital adequacy purposes and (b) established by the prompt corrective action provisions of Section 38 of the Federal Depository Insurance Act; (2) the actual or possible material effects of noncompliance with such requirements; (3) whether the entity is in compliance with the regulatory capital requirements including (a) required and actual ratios and amounts of Tier 1 leverage, Tier 1 risk-based, and total risk-based capital, tangible capital (for savings institutions), and Tier 3 capital for market risk (for certain banks and bank holding companies), (b) factors that may significantly affect capital adequacy; (4) the prompt corrective action category in which the entity was classified as of its most recent notification; (5) whether management believes any conditions or events since notification have changed the entity's category. Also may include additional information that might be disclosed in situations where substantial doubt about the entity's ability to continue as a going concern for a reasonable period of time.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 505
-Section 50
-Paragraph 1C
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef
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+ Details

Fair Value Information

12 Months Ended

Dec. 31, 2018

Fair Value Disclosures [Abstract]

Fair Value Information

20.

FAIR VALUE INFORMATION

Fair Value Hierarchy

Fair value is the exchange price that would be received for an asset or paid to transfer a liability (exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date.

The following disclosure provides the fair value information for financial assets and liabilities as of December

2018

. The fair value hierarchy prioritizes the inputs to valuation techniques used to measure fair value into three broad levels (Level

, Level

and Level

•

Level

1 —

Quoted prices in active markets for identical assets or liabilities in active markets that are accessible at the measurement date.

•

Level

— Observable inputs other than Level 1, including quoted prices for similar assets and liabilities in active markets, quoted prices in less active markets, or other observable inputs or model derived valuations that can be corroborated by observable market data, either directly or indirectly, for substantially the full term of the financial instrument.

•

Level

— Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable. These valuation methodologies generally include pricing models, discounted cash flow models, or a determination of fair value that requires significant management judgment or estimation.

There were no transfers in and out of Level

and Level

during the years ended December

2018

and

2017.

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The tables below present the balances of assets and liabilities measured at fair value on a recurring basis for the periods presented.

	Carrying Value at December 31, 2018		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	(Dollars in thousands)
Description of assets
Investment securities - AFS:
Residential mortgage-backed securities	$	1,474,508	$	-	$	1,474,508	$	-
CMO/REMIC - residential		214,051		-		214,051		-
Municipal bonds		44,810		-		44,810		-
Other securities		716		-		716		-
Total investment securities - AFS		1,734,085		-		1,734,085		-
Interest rate swaps		1,938		-		1,938		-
Total assets	$	1,736,023	$	-	$	1,736,023	$	-
Description of liability
Interest rate swaps	$	1,938	$	-	$	1,938	$	-
Total liabilities	$	1,938	$	-	$	1,938	$	-

	Carrying Value at December 31, 2017		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	(Dollars in thousands)
Description of assets
Investment securities - AFS:
Residential mortgage-backed securities	$	1,750,909	$	-	$	1,750,909	$	-
CMO/ REMIC - residential		273,829		-		273,829		-
Municipal bonds		55,496		-		55,496		-
Other securities		751		-		751		-
Total investment securities - AFS		2,080,985		-		2,080,985		-
Interest rate swaps		3,211		-		3,211		-
Total assets	$	2,084,196	$	-	$	2,084,196	$	-
Description of liability
Interest rate swaps	$	3,211	$	-	$	3,211	$	-
Total liabilities	$	3,211	$	-	$	3,211	$	-

Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis

We may be required to measure certain assets at fair value on a non-recurring basis in accordance with

GAAP. These adjustments to fair value usually result from application of lower of cost or fair value accounting or write-downs of individual assets.

For assets measured at fair value on a non-recurring basis that were held on the balance sheet at December

2018

and

2017

, respectively,

the following tables provide the level of valuation assumptions used to determine each adjustment and the carrying value of the related assets that had losses during the period.

	Carrying Value at December 31, 2018		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Losses For the Year Ended December 31, 2018
	(Dollars in thousands)
Description of assets
Impaired loans, excluding PCI loans:
Commercial and industrial	$	189	$	-	$	-	$	189	$	3
SBA		-		-		-		-		-
Real estate:
Commercial real estate		3,143		-		-		3,143		478
Construction		-		-		-		-		-
SFR mortgage		-		-		-		-		-
Dairy & livestock and agribusiness		78		-		-		78		12
Consumer and other loans		68		-		-		68		68
Other real estate owned		-		-		-		-		-
Asset held-for-sale		-		-		-		-		-
Total assets	$	3,478	$	-	$	-	$	3,478	$	561

	Carrying Value at December 31, 2017		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Losses For the Year Ended December 31, 2017
	(Dollars in thousands)
Description of assets
Impaired loans, excluding PCI loans:
Commercial and industrial	$	-	$	-	$	-	$	-	$	-
SBA		-		-		-		-		-
Real estate:
Commercial real estate		-		-		-		-		-
Construction		-		-		-		-		-
SFR mortgage		-		-		-		-		-
Dairy & livestock and agribusiness		-		-		-		-		-
Consumer and other loans		378		-		-		378		74
Other real estate owned		-		-		-		-		-
Asset held-for-sale		-		-		-		-		-
Total assets	$	378	$	-	$	-	$	378	$	74

Fair Value of Financial Instruments

The following disclosure presents estimated fair value of our financial instruments. The estimated fair value amounts have been determined by the Company using available market information and appropriate valuation methodologies. However, considerable judgment is required to develop the estimates of fair value. Accordingly, the estimates presented below are not necessarily indicative of the amounts the Company may realize in a current market exchange as of December 31, 2018 and 2017, respectively.

The use of different market assumptions and/or estimation methodologies may have a material effect on the estimated fair value amounts.


	December 31, 2018
			Estimated Fair Value
	Carrying Amount		Level 1		Level 2		Level 3		Total
	(Dollars in thousands)
Assets
Total cash and cash equivalents	$	163,948	$	163,948	$	-	$	-	$	163,948
Interest-earning balances due from depository institutions		7,670		-		7,339		-		7,339
Investment securities available-for-sale		1,734,085		-		1,734,085		-		1,734,085
Investment securities held-to-maturity		744,440		-		721,537		-		721,537
Total loans, net of allowance for loan losses (1)		7,700,998		-		-		7,514,964		7,514,964
Swaps		1,938		-		1,938		-		1,938
Liabilities
Deposits:
Interest-bearing	$	3,622,703	$	-	$	3,614,682	$	-	$	3,614,682
Borrowings		722,255		-		721,601		-		721,601
Junior subordinated debentures		25,774		-		-		21,176		21,176
Swaps		1,938		-		1,938		-		1,938

(1)	The fair value of loans as of December 31, 2018 was measured using an exit price notion.

	December 31, 2017
			Estimated Fair Value
	Carrying Amount		Level 1		Level 2		Level 3		Total
	(Dollars in thousands)
Assets
Total cash and due from banks	$	144,377	$	144,377	$	-	$	-	$	144,377
Interest-earning balances due from depository institutions		17,952		-		17,951		-		17,951
FHLB stock		17,688		-		17,688		-		17,688
Investment securities available-for-sale		2,080,985		-		2,080,985		-		2,080,985
Investment securities held-to-maturity		829,890		-		819,215		-		819,215
Total loans, net of allowance for loan losses		4,771,046		-		-		4,678,402		4,678,402
Swaps		3,211		-		3,211		-		3,211
Liabilities
Deposits:
Noninterest-bearing	$	3,846,436	$	3,846,436	$	-	$	-	$	3,846,436
Interest-bearing		2,700,417		-		2,697,781		-		2,697,781
Borrowings		553,773		-		553,416		-		553,416
Junior subordinated debentures		25,774		-		-		18,070		18,070
Swaps		3,211		-		3,211		-		3,211

The fair value estimates presented herein are based on pertinent information available to management as of December 31, 2018 and 2017. Although management is not aware of any factors that would significantly affect the estimated fair value amounts, such amounts have not been comprehensively revalued for purposes of these financial statements since that date, and therefore, current estimates of fair value may differ significantly from the amounts presented above.

Derivative Instruments and Hedging Activities Disclosure [Abstract]

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Derivative Financial Instruments

12 Months Ended

Dec. 31, 2018

Derivative Financial Instruments

21.

DERIVATIVE FINANCIAL INSTRUMENTS

The Bank is exposed to certain risks relating to its ongoing business operations and utilizes interest rate swap agreements (“swaps”) as part of its asset/liability management strategy to help manage its interest rate risk position. As of December 31, 2018, the Bank has entered into 73 interest-rate swap agreements with customers. The Bank then entered into identical offsetting swaps with a counterparty bank. The swap agreements are not designated as hedging instruments. The purpose of entering into offsetting derivatives not designated as a hedging instrument is to provide the Bank a variable-rate loan receivable and to provide the customer the financial effects of a fixed-rate loan without creating significant volatility in the Bank’s earnings.

The structure of the swaps is as follows. The Bank enters into an interest rate swap with its customers in which the Bank pays the customer a variable rate and the customer pays the Bank a fixed rate, therefore allowing customers to convert variable rate loans to fixed rate loans. At the same time, the Bank enters into a swap with the counterparty bank in which the Bank pays the counterparty a fixed rate and the counterparty in return pays the Bank a variable rate, which has the effect of passing on the interest-rate risk associated with the customer’s fixed rate swap to the counterparty bank. The net effect of the transaction allows the Bank to receive interest on the loan from the customer at a variable rate based on LIBOR plus a spread. The changes in the fair value of the swaps primarily offset each other and therefore should not have a significant impact on the Company’s results of operations, although the Company does incur credit and counterparty risk with respect to performance on the swap agreements by the Bank’s customer and counterparty, respectively. Our interest rate swap derivatives are subject to a master netting arrangement with one counterparty bank. None of our derivative assets and liabilities are offset in the balance sheet.

We believe our risk of loss associated with our counterparty borrowers related to interest rate swaps is mitigated as the loans with swaps are underwritten to take into account potential additional exposure, although there can be no assurances in this regard since the performance of our swaps is subject to market and counterparty risk.

Balance Sheet Classification of Derivative Financial Instruments

As of December 31, 2018 and 2017, the total notional amount of the Company’s swaps was $195.4 million and $198.5 million, respectively. The location of the asset and liability, and their respective fair values are summarized in the tables below.

December 31, 2018

Asset Derivatives

Liability Derivatives

Balance Sheet

Location

Fair

Value

Balance Sheet

Location

Fair

Value

(Dollars in thousands)

Derivatives not designated as hedging instruments:

Interest rate swaps

Other assets

1,938

Other liabilities

1,938

Total derivatives

1,938

December 31, 2017

Asset Derivatives

Liability Derivatives

Balance Sheet

Location

Fair

Value

Balance Sheet

Location

Fair

Value

(Dollars in thousands)

Derivatives not designated as hedging instruments:

Interest rate swaps

Other assets

3,211

Other liabilities

3,211

Total derivatives

3,211

The Effect of Derivative Financial Instruments on the Consolidated Statements of Earnings

The following table summarizes the effect of derivative financial instruments on the consolidated statements of earnings for the periods presented.

Derivatives Not Designated as Hedging Instruments	Location of Gain Recognized in Income on Derivative Instruments		Amount of Gain Recognized in Income on Derivative Instruments
			For the Year Ended December 31,
			2018		2017		2016
			(Dollars in thousands)
Interest rate swaps		Other income	$	340	$	615	$	691
Total			$	340	$	615	$	691

Other Comprehensive Income (Loss)

12 Months Ended

Dec. 31, 2018

Equity [Abstract]

Other Comprehensive Income (Loss)

22.

OTHER COMPREHENSIVE INCOME (LOSS)

The tables below provide a summary of the components of OCI for the periods presented.

	For the Year Ended December 31,
	2018								2017								2016
	Before-tax			Tax effect		After-tax			Before-tax			Tax effect		After-tax			Before-tax			Tax effect		After-tax
	(Dollars in thousands)
Investment securities:
Net change in fair value recorded in accumulated OCI	$	(26,435	)	$	7,815	$	(18,620	)	$	(11,336	)	$	4,760	$	(6,576	)	$	(15,792	)	$	6,633	$	(9,159	)
Amortization of unrealized (gains)/ losses on securities transferred from available-for-sale to held-to-maturity		(2,091	)		619		(1,472	)		(3,293	)		1,383		(1,910	)		(2,174	)		913		(1,261	)
Net realized (gain)/loss reclassified into earnings (1)		—			—		—			(402	)		169		(233	)		(548	)		230		(318	)
Net change	$	(28,526	)	$	8,434	$	(20,092	)	$	(15,031	)	$	6,312	$	(8,719	)	$	(18,514	)	$	7,776	$	(10,738	)

(1)	Included in other noninterest income.

Balance Sheet Offsetting

12 Months Ended

Dec. 31, 2018

Revenue from Contract with Customer [Abstract]

Balance Sheet Offsetting

23. BALANCE SHEET OFFSETTING

Assets and liabilities relating to certain financial instruments, including, derivatives and securities sold under repurchase agreements (“repurchase agreements”), may be eligible for offset in the condensed consolidated balance sheets as permitted under accounting guidance. As noted above, our interest rate swap derivatives are subject to a master netting arrangement with one counterparty bank. Our interest rate swap derivatives require the Company to pledge investment securities as collateral based on certain risk thresholds. Investment securities that have been pledged by the Company to the counterparty bank continue to be reported in the Company’s condensed consolidated balance sheets unless the Company defaults. We offer a repurchase agreement product to our customers, which include master netting agreements that allow for the netting of collateral positions. This product, known as Citizens Sweep Manager, sells certain of our securities overnight to our customers under an agreement to repurchase them the next day.

The repurchase agreements are not offset in the condensed consolidated balances.

	Gross Amounts Recognized in		Gross Amounts Offset in the			Net Amounts of Assets Presented		Gross Amounts Not Offset in the Consolidated Balance Sheets
	the Consolidated Balance Sheets		Consolidated Balance Sheets			in the Consolidated		Financial Instruments		Collateral Pledged			Net Amount
	(Dollars in thousands)
December 31, 2018
Financial assets:
Derivatives not designated as hedging instruments	$	1,938	$	—		$	—	$	1,938	$	—		$	1,938
Total	$	1,938	$	—		$	—	$	1,938	$	—		$	1,938
Financial liabilities:
Derivatives not designated as hedging instruments	$	4,203	$	(2,265	)	$	1,938	$	2,265	$	—		$	4,203
Repurchase agreements		442,255		—			442,255		—		(487,607	)		(45,352	)
Total	$	446,458	$	(2,265	)	$	444,193	$	2,265	$	(487,607	)	$	(41,149	)
December 31, 2017
Financial assets:
Derivatives not designated as hedging instruments	$	3,211	$	—		$	—	$	3,211	$	—		$	3,211
Total	$	3,211	$	—		$	—	$	3,211	$	—		$	3,211
Financial liabilities:
Derivatives not designated as hedging instruments	$	4,495	$	(1,284	)	$	3,211	$	1,284	$	(12,760	)	$	(8,265	)
Repurchase agreements		553,773		—			553,773		—		(573,759	)		(19,986	)
Total	$	558,268	$	(1,284	)	$	556,984	$	1,284	$	(586,519	)	$	(28,251	)

Revenue Recognition

12 Months Ended

Dec. 31, 2018

Revenue Recognition

24.	REVENUE RECOGNITION

On January 1, 2018, the Company adopted ASU No. 2014-09 “Revenue from Contracts with Customers (Topic 606)” and all subsequent ASUs that modified Topic 606. As stated in Note 3 –

Summary of Significant Accounting Policies

, the implementation of the new standard did not have a material impact on the measurement or recognition of revenue; as such, a cumulative effect adjustment to opening retained earnings was not deemed necessary. Results for reporting periods beginning after January 1, 2018 are presented under Topic 606, while prior period amounts were not adjusted and continue to be reported in accordance with our historic accounting under Topic 605.

Topic 606 does not apply to revenue associated with financial instruments, including revenue from loans and securities. In addition, certain noninterest income streams such as fees associated with mortgage servicing rights, financial guarantees, derivatives, and certain credit card fees are also not in scope of the new guidance. Topic 606 is applicable to noninterest revenue streams such as trust and asset management income, deposit related fees, interchange fees, and merchant income. However, the recognition of these revenue streams did not change significantly upon adoption of Topic 606. Substantially all of the Company’s revenue is generated from contracts with customers. Noninterest revenue streams in-scope of Topic 606 are discussed below.

Trust and Investment Services

Trust and asset management income is primarily comprised of fees earned from the management and administration of trusts and customer assets. The Company’s performance obligation is generally satisfied over time and the resulting fees are recognized monthly, based upon the monthly market value of the assets under management and the applicable fee rate. Payment is generally received at month end through a direct charge to customers’ accounts. The Company does not earn performance-based incentives. Other services related to real estate and tax return preparation services are also provided to existing trust and asset management customers. The Company’s performance obligation for these transactional-based services is generally satisfied, and related revenue recognized, at a point in time (i.e., as incurred). Payment is received shortly after services are rendered.

Wealth Management contracts with customers have no clauses that would entitle customers to additional services. Fees are generally earned based on market value of assets under management (AUM) and miscellaneous fees are transaction driven and are charged based on an agreed upon fee schedule. Performance obligation is satisfied upon execution of the transaction and there is no need to allocate transaction price to the performance obligation(s) in the contract. Wealth Management customers can also terminate the contract at will. Based on our review, we did not find provisions in the contracts that will require changes to the current accounting under Topic 606.

For Investment Services, the fees are earned based on services performed for customers as provided through an affiliated broker-dealer. Fees are earned from gross dealer commission based on trade date. Performance obligation is satisfied upon execution of the transaction and there is no need to allocate transaction price to the performance obligation(s) in the contract. Based on our review, we did not find provisions in the contracts that will require changes to the current accounting under Topic 606.

Deposit-related Fees

Service charges on deposit accounts consist of account analysis fees earned on analyzed business checking accounts, monthly service fees, and other deposit account related fees. The Company’s performance obligation for account analysis fees and monthly service fees is generally satisfied, and the related revenue recognized, over the period in which the service is provided. Other deposit account related fees are largely transactional based, and therefore, the Company’s performance obligation is satisfied, and related revenue recognized, at a point in time. Payment for service charges on deposit accounts is primarily received immediately or in the following month through a direct charge to customers’ accounts.

Bankcard Services

The Bank generates revenues from merchant servicing to its clients. A fee schedule is part of the contract and is calculated based on sales of merchants on a monthly basis. There is no future promise or claim to deliver services as merchant fees are based on monthly merchant transactions. The Company’s performance obligations are largely satisfied, and related revenue recognized, when the services are rendered or upon completion. Payment is typically received immediately or in the following month. Therefore, the new revenue standard has no impact on revenues generated from bankcard services.

The following presents noninterest income, segregated by revenue streams

in-scope

and

out-of-scope

of Topic 606, for the periods indicated.


	For the Year Ended December 31,
	2018		2017		2016
	(Dollars in thousands)
Noninterest income:
In-scope of Topic 606:
Service charges on deposit accounts	$	17,070	$	15,809	$	15,066
Trust and investment services		8,774		9,845		9,595
Bankcard services		3,485		3,406		2,921
Gain on OREO, net		3,546		6		(20	)
Other		6,588		4,888		3,457

Noninterest Income (in-scope of Topic 606)		39,463		33,954		31,019
Noninterest Income (out-of-scope of Topic 606)		4,018		8,164		4,533

Total noninterest income	$	43,481	$	42,118	$	35,552

Contract Balances

A contract asset balance occurs when an entity performs a service for a customer before the customer pays consideration (resulting in a contract receivable) or before payment is due (resulting in a contract asset). A contract liability balance is an entity’s obligation to transfer a service to a customer for which the entity has already received payment (or payment is due) from the customer. The Company’s noninterest revenue streams are largely based on transactional activity, or standard

month-end

revenue accruals such as asset management fees based on

month-end

market values. Consideration is often received immediately or shortly after the Company satisfies its performance obligation and revenue is recognized. The Company does not typically enter into long-term revenue contracts with customers, and therefore, does not experience significant contract balances. As of December 31, 2018 and 2017, the Company did not have any significant contract balances.

Contract Acquisition Costs

In connection with the adoption of Topic 606, an entity is required to capitalize, and subsequently amortize into expense, certain incremental costs of obtaining a contract with a customer if these costs are expected to be recovered. The incremental costs of obtaining a contract are those costs that an entity incurs to obtain a contract with a customer that it would not have incurred if the contract had not been obtained (for example, sales commission). The Company utilizes the practical expedient, which allows entities to immediately expense contract acquisition costs when the asset that would have resulted from capitalizing these costs would have been amortized in one year or less. Upon adoption of Topic 606, the Company did not capitalize any contract acquisition costs.

Condensed Financial Information of Parent Company

12 Months Ended

Dec. 31, 2018

Condensed Financial Information Disclosure [Abstract]

Condensed Financial Information of Parent Company

25.

CONDENSED FINANCIAL INFORMATION OF PARENT COMPANY

The following tables provide the parent company only condensed balance sheets, condensed statements of earnings and condensed statements of cash flows for the periods presented.

CVB FINANCIAL CORP.

CONDENSED BALANCE SHEETS

	As of December 31,
	2018		2017
	(Dollars in thousands)
Assets
Investment in subsidiaries	$	1,865,609	$	1,084,332
Other assets, net		31,628		26,703
Total assets	$	1,897,237	$	1,111,035
Liabilities	$	46,047	$	41,769
Stockholders’ equity		1,851,190		1,069,266
Total liabilities and stockholders’ equity	$	1,897,237	$	1,111,035

CVB FINANCIAL CORP.

CONDENSED STATEMENTS OF EARNINGS

	For the Year Ended December 31,
	2018			2017			2016
	(Dollars in thousands)
Excess in net earnings of subsidiaries	$	78,601		$	50,253		$	55,192
Dividends from the Bank		77,800			57,000			49,000
Other expense, net		(4,398	)		(2,842	)		(2,763	)
Net earnings	$	152,003		$	104,411		$	101,429

CVB FINANCIAL CORP.

CONDENSED STATEMENTS OF CASH FLOWS

	For the Year Ended December 31,
	2018			2017			2016
	(Dollars in thousands)
Cash Flows from Operating Activities
Net earnings	$	152,003		$	104,411		$	101,429
Adjustments to reconcile net earnings to cash used in operating activities:
Earnings of subsidiaries		(156,401	)		(107,253	)		(104,192	)
Tax settlement received from the Bank		—			1,577			2,557
Stock-based compensation		3,508			2,953			2,803
Other operating activities, net		(2,052	)		(1,725	)		(3,362	)
Total adjustments		(154,945	)		(104,448	)		(102,194	)
Net cash used in operating activities		(2,942	)		(37	)		(765	)
Cash Flows from Investing Activities
Dividends received from the Bank		77,800			57,000			49,000
Net cash provided by investing activities		77,800			57,000			49,000
Cash Flows from Financing Activities
Cash dividends on common stock		(65,966	)		(57,047	)		(51,625	)
Proceeds from exercise of stock options		1,701			2,683			5,151
Tax benefit related to exercise of stock options		—			—			932
Repurchase of common stock		(7,760	)		(1,128	)		(1,907	)
Net cash used in financing activities		(72,025	)		(55,492	)		(47,449	)
Net increase in cash and cash equivalents		2,833			1,471			786
Cash and cash equivalents, beginning of period		19,217			17,746			16,960
Cash and cash equivalents, end of period	$	22,050		$	19,217		$	17,746

Quarterly Financial Data

12 Months Ended

Dec. 31, 2018

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Data

26.

QUARTERLY FINANCIAL DATA (UNAUDITED)

The following table sets forth our unaudited, quarterly results for the periods indicated.


	For the Three Months Ended
	December 31,			September 30,			June 30,			March 31,
	(Dollars in thousands, except per share amounts)
2018
Net interest income	$	113,016		$	92,820		$	72,688		$	70,521
Provision for (recapture of) loan losses		3,000			500			(1,000	)		(1,000	)
Net earnings		43,159			38,558			35,373			34,913
Basic earnings per common share		0.31			0.30			0.32			0.32
Diluted earnings per common share		0.31			0.30			0.32			0.32
2017
Net interest income	$	71,275		$	71,739		$	70,483		$	65,433
Recapture of provision for loan losses		(1,500	)		(1,500	)		(1,000	)		(4,500	)
Net earnings		17,851			29,683			28,373			28,504
Basic earnings per common share		0.16			0.27			0.26			0.26
Diluted earnings per common share		0.16			0.27			0.26			0.26

Accounting policies (Policies)

12 Months Ended

Dec. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Reclassification

Business Segments

Cash and cash equivalents

Investment Securities

Loans and Lease Finance Receivables

Loans and Lease Finance Receivables and Allowance for Loan Losses

for total loans, excluding PCI loans, by type and to Note 6 —

Acquired SJB Assets and FDIC Loss Sharing Asset

for PCI loans by type.

Troubled Debt Restructurings

The delay is insignificant relative to any of the following:

•

The frequency of payments due;

•

The debt’s original contractual maturity; or

•

The debt’s original expected duration.

Impaired Loans

Provision and Allowance for Loan Losses

businesses.

Reserve for Unfunded Loan Commitments —

Reserve for Unfunded Loan Commitments

Purchase Credit Impaired Loans

ns and Debt Securities Acquired with Deteriorated Credit Quality

Acquired SJB Assets and FDIC Loss Sharing Asset

for PCI loans by type at December 31, 2018.

Other Real Estate Owned

Premises and Equipment

Bank premises		15 - 39 years
Leasehold improvements		Shorter of estimated economic lives of 15 years or term of the lease.
Computer equipment		3 - 7 years
Furniture, fixtures and equipment		5 - 10 years

•

Management, having the authority to approve the action, commits to a plan to sell the asset;

•

The asset is available for immediate sale, an active program to locate a buyer and other actions required to complete the plan to sell the asset have been initiated;

•

The sale of the asset is probable, and transfer of the asset is expected to qualify for recognition as a completed sale, within one year;

•

The asset is being actively marketed for sale at a price that is reasonable in relation to its current fair value;

•

Actions required to complete the plan indicate that it is unlikely that significant changes to the plan will be made or that the plan will be withdrawn.

Goodwill and Intangible Assets

Other intangible assets consist of core deposit intangible assets arising from business combinations and are amortized using an accelerated method over their estimated useful lives.

Use of Fair Value

Fair Value Information

Bank Owned Life Insurance

Income Taxes

Earnings per Common Share

Earnings Per Share Reconciliation

of these consolidated financial statements.

Stock-Based Compensation

— Consistent with the provisions of ASC 718,

Stock Compensation

The grant date fair value of restricted stock awards is measured at the fair value of the Company’s common stock as if the restricted share was vested and issued on the date of grant.

Additional information is included in Note 18 —

Stock Option Plans and Restricted Stock Awards

of the consolidated financial statements included herein.

Derivative Financial Instruments

Statement of Cash Flows

CitizensTrust

Use of Estimates in the Preparation of Financial Statements

Other Contingencies

Commitments and Contingencies

at December 31, 2018, the Company does not have any

material

litigation accruals and is not aware of any material pending legal action or complaints asserted against the Company.

Adoption of New Accounting Standard and Recent Accounting Pronouncements

Adoption of New Accounting Standard

Revenue Recognition

for more information.

Fair Value Information

Recent Accounting Pronouncements

Fair Value Hierarchy

The following disclosure provides the fair value information for financial assets and liabilities as of December

2018

. The fair value hierarchy prioritizes the inputs to valuation techniques used to measure fair value into three broad levels (Level

, Level

and Level

•

Level

1 —

Quoted prices in active markets for identical assets or liabilities in active markets that are accessible at the measurement date.

•

Level

•

Level

There were no transfers in and out of Level

and Level

during the years ended December

2018

and

2017.

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The tables below present the balances of assets and liabilities measured at fair value on a recurring basis for the periods presented.

Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Summary of Useful Lives of Principal Classes of Assets

The ranges of useful lives of the principal classes of assets are as follows:

Bank premises		15 - 39 years
Leasehold improvements		Shorter of estimated economic lives of 15 years or term of the lease.
Computer equipment		3 - 7 years
Furniture, fixtures and equipment		5 - 10 years

Business Combinations (Tables)

12 Months Ended

Dec. 31, 2018

Business Combinations [Abstract]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

The table below summarizes the amounts recognized for the estimated fair value of assets acquired and the liabilities assumed as of the acquisition date.

	August 10, 2018
	(Dollars in thousands)
Merger Consideration
Cash paid	$	180,719
CVBF common stock issued		722,767
Total merger consideration			$	903,486
Identifiable net assets acquired, at fair value
Assets Acquired
Cash and cash equivalents		47,802
Investment securities		716,996
FHLB stock		17,250
Loans		2,734,081
Accrued interest receivable		7,916
Premises and equipment		14,632
BOLI		70,904
Core deposit intangible		52,200
Other assets		54,479
Total assets acquired				3,716,260
Liabilities assumed
Deposits		2,869,986
FHLB advances		297,571
Other borrowings		166,000
Other liabilities		29,192
Total liabilities assumed				3,362,749
Total fair value of identifiable net assets, at fair value				353,511
Goodwill			$	549,975

Business Acquisition, Pro Forma Information [Table Text Block]

As a result, actual amounts would have differed from the unaudited pro forma information presented.

	Unaudited Pro Forma Year Ended December 31,
	2018		2017
	(Dollars in thousands, except per share amounts)
Total revenues (net interest income plus noninterest income)	$	488,620	$	477,235
Net Income	$	181,433	$	139,129
Earnings per share - basic	$	1.30	$	1.00
Earnings per share - diluted	$	1.29	$	0.99

Investment Securities (Tables)

12 Months Ended

Dec. 31, 2018

Investments, Debt and Equity Securities [Abstract]

Summary of Amortized Cost and Estimated Fair Value of Investment Securities

	December 31, 2018
	Amortized Cost		Gross Unrealized Holding Gain		Gross Unrealized Holding Loss			Fair Value		Total Percent
	(Dollars in thousands)
Investment securities available-for-sale:
Residential mortgage-backed securities	$	1,494,106	$	1,348	$	(20,946	)	$	1,474,508		85.03	%
CMO/REMIC - residential		217,223		353		(3,525	)		214,051		12.34	%
Municipal bonds		45,621		332		(1,143	)		44,810		2.59	%
Other securities		716		-		-			716		0.04	%
Total available-for-sale securities	$	1,757,666	$	2,033	$	(25,614	)	$	1,734,085		100.00	%
Investment securities held-to-maturity:
Government agency/GSE	$	138,274	$	572	$	(2,622	)	$	136,224		18.57	%
Residential mortgage-backed securities		153,874		-		(3,140	)		150,734		20.67	%
CMO		215,336		-		(12,081	)		203,255		28.93	%
Municipal bonds		236,956		556		(6,188	)		231,324		31.83	%
Total held-to-maturity securities	$	744,440	$	1,128	$	(24,031	)	$	721,537		100.00	%

	December 31, 2017
	Amortized Cost		Gross Unrealized Holding Gain		Gross Unrealized Holding Loss			Fair Value		Total Percent
	(Dollars in thousands)
Investment securities available-for-sale:
Residential mortgage-backed securities	$	1,747,780	$	11,231	$	(8,102	)	$	1,750,909		84.14	%
CMO/REMIC - residential		274,634		1,277		(2,082	)		273,829		13.16	%
Municipal bonds		54,966		774		(244	)		55,496		2.66	%
Other securities		751		-		-			751		0.04	%
Total available-for-sale securities	$	2,078,131	$	13,282	$	(10,428	)	$	2,080,985		100.00	%
Investment securities held-to-maturity:
Government agency/GSE	$	159,716	$	854	$	(2,134	)	$	158,436		19.25	%
Residential mortgage-backed securities		176,427		667		(382	)		176,712		21.26	%
CMO		225,072		-		(8,641	)		216,431		27.12	%
Municipal bonds		268,675		2,751		(3,790	)		267,636		32.37	%
Total held-to-maturity securities	$	829,890	$	4,272	$	(14,947	)	$	819,215		100.00	%

Summary of Interest Income Earned on Investment Securities

The following table provides information about the amount of interest income earned on investment securities which is fully taxable and which is exempt from regular federal income tax.

	For the Year Ended December 31,
	2018		2017		2016
	(Dollars in thousands)
Investment securities available-for-sale:
Taxable	$	44,423	$	47,596	$	43,538
Tax-advantaged		1,565		2,182		4,164
Total interest income from available-for-sale securities		45,988		49,778		47,702
Investment securities held-to-maturity:
Taxable		11,848		12,558		10,183
Tax-advantaged		7,053		8,457		10,044
Total interest income from held-to-maturity securities		18,901		21,015		20,227
Total interest income from investment securities	$	64,889	$	70,793	$	67,929

Summary of Continuous Unrealized Loss Position of Securities

	December 31, 2018
	Less Than 12 Months					12 Months or Longer					Total
	Fair Value		Gross Unrealized Holding Losses			Fair Value		Gross Unrealized Holding Losses			Fair Value		Gross Unrealized Holding Losses
	(Dollars in thousands)
Investment securities available-for-sale:
Residential mortgage-backed securities	$	692,311	$	(4,864	)	$	593,367	$	(16,082	)	$	1,285,678	$	(20,946	)
CMO/REMIC - residential		36,582		(365	)		135,062		(3,160	)		171,644		(3,525	)
Municipal bonds		9,568		(188	)		14,181		(955	)		23,749		(1,143	)
Total available-for-sale securities	$	738,461	$	(5,417	)	$	742,610	$	(20,197	)	$	1,481,071	$	(25,614	)
Investment securities held-to-maturity:
Government agency/GSE	$	7,479	$	(15	)	$	54,944	$	(2,607	)	$	62,423	$	(2,622	)
Residential mortgage-backed securities		59,871		(484	)		90,863		(2,656	)		150,734		(3,140	)
CMO		-		-			203,254		(12,081	)		203,254		(12,081	)
Municipal bonds		70,989		(778	)		77,723		(5,410	)		148,712		(6,188	)
Total held-to-maturity securities	$	138,339	$	(1,277	)	$	426,784	$	(22,754	)	$	565,123	$	(24,031	)

	December 31, 2017
	Less Than 12 Months					12 Months or Longer					Total
	Fair Value		Gross Unrealized Holding Losses			Fair Value		Gross Unrealized Holding Losses			Fair Value		Gross Unrealized Holding Losses
	(Dollars in thousands)
Investment securities available-for-sale:
Residential mortgage-backed securities	$	414,091	$	(1,828	)	$	303,746	$	(6,274	)	$	717,837	$	(8,102	)
CMO/REMIC - residential		95,137		(487	)		71,223		(1,595	)		166,360		(2,082	)
Municipal bonds		946		(4	)		13,956		(240	)		14,902		(244	)
Total available-for-sale securities	$	510,174	$	(2,319	)	$	388,925	$	(8,109	)	$	899,099	$	(10,428	)
Investment securities held-to-maturity:
Government agency/GSE	$	18,950	$	(27	)	$	43,495	$	(2,107	)	$	62,445	$	(2,134	)
Residential mortgage-backed securities		51,297		(188	)		55,306		(194	)		106,603		(382	)
CMO		-		-			216,431		(8,641	)		216,431		(8,641	)
Municipal bonds		32,069		(492	)		66,217		(3,298	)		98,286		(3,790	)
Total held-to-maturity securities	$	102,316	$	(707	)	$	381,449	$	(14,240	)	$	483,765	$	(14,947	)

Summary of Amortized Cost and Fair Value of Debt Securities by Contractual Maturity

Mortgage-backed and CMO/REMIC securities are included in maturity categories based upon estimated average lives which incorporate estimated prepayment speeds.

	December 31, 2018
	Available-for-sale				Held-to-maturity
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
	(Dollars in thousands)
Due in one year or less	$	13,907	$	14,069	$	500	$	508
Due after one year through five years		1,574,638		1,554,686		288,967		276,693
Due after five years through ten years		143,258		140,500		197,061		193,389
Due after ten years		25,863		24,830		257,912		250,947
Total investment securities	$	1,757,666	$	1,734,085	$	744,440	$	721,537

Acquired SJB Assets and FDIC Loss Sharing Asset (Tables)

12 Months Ended

Dec. 31, 2018

Summary of PCI Loans and Lease Finance Receivables

The following table provides a summary of PCI loans and lease finance receivables by type and by internal risk ratings (credit quality indicators) for the periods presented.

	December 31
	2018			2017
	(Dollars in thousands)
Commercial and industrial	$	519		$	934
SBA		1,258			1,383
Real estate:
Commercial real estate		14,407			27,431
Construction		-			-
SFR mortgage		145			162
Dairy & livestock and agribusiness		700			770
Municipal lease finance receivables		-			-
Consumer and other loans		185			228
Gross PCI loans		17,214			30,908
Less: Purchase accounting discount		-			(2,026	)
Gross PCI loans, net of discount		17,214			28,882
Less: Allowance for PCI loan losses		(204	)		(367	)
Net PCI loans	$	17,010		$	28,515

Summary of Gross PCI Loans by Internal Risk Ratings by Loans

The following table summarizes gross PCI loans by internal risk ratings for the periods presented.

	December 31,
	2018		2017
	(Dollars in thousands)
Pass	$	15,816	$	26,439
Special mention		1,174		1,088
Substandard		224		3,381
Doubtful & loss		-		-
Total gross PCI loans	$	17,214	$	30,908

Summary of Activity Related to FDIC Loss Sharing Liability

The following table summarizes the activity related to the FDIC loss sharing liability for the periods presented.

	For the Year Ended December 31,
	2018			2017
	(Dollars in thousands)
Balance, beginning of period	$	(107	)	$	(502	)
FDIC share of recoveries, net of charge-offs		-			-
Cash paid to FDIC, net		64			519
Other		43			(124	)
Balance, end of period	$	-		$	(107	)

Loans and Lease Finance Receivables and Allowance for Loan Losses (Tables)

12 Months Ended

Dec. 31, 2018

Receivables [Abstract]

Summary of Components of Loans and Lease Finance Receivables, Excluding PCI Loans

	December 31
	2018			2017
	(Dollars in thousands)
Commercial and industrial	$	1,002,209		$	513,325
SBA		350,043			122,055
Real estate:
Commercial real estate		5,394,229			3,376,713
Construction		122,782			77,982
SFR mortgage		296,504			236,202
Dairy & livestock and agribusiness		393,843			347,289
Municipal lease finance receivables		64,186			70,243
Consumer and other loans		128,429			64,229
Gross loans, excluding PCI loans		7,752,225			4,808,038
Less: Deferred loan fees, net		(4,828	)		(6,289	)
Gross loans, excluding PCI loans, net of deferred loan fees		7,747,397			4,801,749
Less: Allowance for loan losses		(63,409	)		(59,218	)
Net loans, excluding PCI loans		7,683,988			4,742,531
PCI Loans		17,214			30,908
Discount on PCI loans		-			(2,026	)
Less: Allowance for loan losses		(204	)		(367	)
PCI loans, net		17,010			28,515
Total loans and lease finance receivables	$	7,700,998		$	4,771,046

Summary of Loan, Excluding PCI Loans by Internal Risk Ratings

	December 31, 2018
	Pass		Special Mention		Substandard (1)		Doubtful & Loss		Total
	(Dollars in thousands)
Commercial and industrial	$	961,909	$	29,358	$	10,942	$	-	$	1,002,209
SBA		336,033		7,375		6,635		-		350,043
Real estate:
Commercial real estate
Owner occupied		2,008,169		95,841		13,980		-		2,117,990
Non-owner occupied		3,260,822		9,938		5,479		-		3,276,239
Construction
Speculative		118,233		-		-		-		118,233
Non-speculative		4,549		-		-		-		4,549
SFR mortgage		289,607		3,310		3,587		-		296,504
Dairy & livestock and agribusiness		350,044		34,586		9,213		-		393,843
Municipal lease finance receivables		63,650		536		-		-		64,186
Consumer and other loans		126,085		1,263		1,081		-		128,429
Total gross loans, excluding PCI loans	$	7,519,101	$	182,207	$	50,917	$	-	$	7,752,225

(1)	Includes $ 19.0 million of classified loans acquired from CB in the third quarter of 2018 .

	December 31, 2017
	Pass		Special Mention		Substandard		Doubtful & Loss		Total
	(Dollars in thousands)
Commercial and industrial	$	483,641	$	19,566	$	10,118	$	-	$	513,325
SBA		112,835		5,358		3,862		-		122,055
Real estate:
Commercial real estate
Owner occupied		1,009,199		76,111		10,970		-		1,096,280
Non-owner occupied		2,257,130		16,434		6,869		-		2,280,433
Construction
Speculative		60,042		-		-		-		60,042
Non-speculative		17,940		-		-		-		17,940
SFR mortgage		229,032		3,124		4,046		-		236,202
Dairy & livestock and agribusiness		321,413		9,047		16,829		-		347,289
Municipal lease finance receivables		69,644		599		-		-		70,243
Consumer and other loans		61,715		1,255		1,259		-		64,229
Total gross loans, excluding PCI loans	$	4,622,591	$	131,494	$	53,953	$	-	$	4,808,038

Schedule of Balance and Activity Related to Allowance for Loan Losses for Held-for-Investment Loans by Type

	For the Year Ended December 31, 2018
	Ending Balance December 31, 2017		Charge-offs			Recoveries		Provision for (Recapture of) Loan Losses			Ending Balance December 31, 2018
	(Dollars in thousands)
Commercial and industrial	$	7,280	$	(10	)	$	82	$	168		$	7,520
SBA		869		(257	)		20		430			1,062
Real estate:
Commercial real estate		41,722		-			-		3,212			44,934
Construction		984		-			2,506		(2,509	)		981
SFR mortgage		2,112		(13	)		51		46			2,196
Dairy & livestock and agribusiness		4,647		-			19		549			5,215
Municipal lease finance receivables		851		-			-		(76	)		775
Consumer and other loans		753		(11	)		141		(157	)		726
PCI loans		367		-			-		(163	)		204
Total allowance for loan losses	$	59,585	$	(291	)	$	2,819	$	1,500		$	63,613

	For the Year Ended December 31, 2017
	Ending Balance December 31, 2016		Charge-offs			Recoveries		(Recapture of) Provision for Loan Losses			Ending Balance December 31, 2017
	(Dollars in thousands)
Commercial and industrial	$	8,154	$	(138	)	$	118	$	(854	)	$	7,280
SBA		871		-			78		(80	)		869
Real estate:
Commercial real estate		37,443		-			154		4,125			41,722
Construction		1,096		-			6,036		(6,148	)		984
SFR mortgage		2,287		-			212		(387	)		2,112
Dairy & livestock and agribusiness		8,541		-			19		(3,913	)		4,647
Municipal lease finance receivables		941		-			-		(90	)		851
Consumer and other loans		988		(13	)		79		(301	)		753
PCI loans		1,219		-			-		(852	)		367
Total allowance for loan losses	$	61,540	$	(151	)	$	6,696	$	(8,500	)	$	59,585


	For the Y ear Ended December 31, 2016
	Ending Balance December 31, 2015		Charge-offs			Recoveries		(Recapture of) Provision for Loan Losses			Ending Balance December 31, 2016
	(Dollars in thousands)
Commercial and industrial	$	8,588	$	(120	)	$	630	$	(944	)	$	8,154
SBA		993		—			40		(162	)		871
Real estate:
Commercial real estate		36,995		—			792		(344	)		37,443
Construction		2,389		—			7,174		(8,467	)		1,096
SFR mortgage		2,103		(102	)		—		286			2,287
Dairy & livestock and agribusiness		6,029		—			216		2,296			8,541
Municipal lease finance receivables		1,153		—			—		(212	)		941
Consumer and other loans		906		(16	)		170		(72	)		988
PCI loans		—		—			—		1,219			1,219
Total allowance for loan losses	$	59,156	$	(238	)	$	9,022	$	(6,400	)	$	61,540

Schedule of Recorded Investment in Loans Held-for-Investment and Related Allowance for Loan Losses by Loan Type

	December 31, 2018
	Recorded Investment in Loans						Allowance for Loan Losses
	Individually Evaluated for Impairment		Collectively Evaluated for Impairment		Acquired with Deterioriated Credit Quality		Individually Evaluated for Impairment		Collectively Evaluated for Impairment		Acquired with Deterioriated Credit Quality
	(Dollars in thousands)
Commercial and industrial	$	7,625	$	994,584	$	—	$	3	$	7,517	$	—
SBA		3,467		346,576		—		—		1,062		—
Real estate:
Commercial real estate		6,540		5,387,689		—		478		44,456		—
Construction		—		122,782		—		—		981		—
SFR mortgage		5,349		291,155		—		—		2,196		—
Dairy & livestock and agribusiness		78		393,765		—		12		5,203		—
Municipal lease finance receivables		—		64,186		—		—		775		—
Consumer and other loans		486		127,943		—		68		658		—
PCI loans		—		—		17,214		—		—		204
Total	$	23,545	$	7,728,680	$	17,214	$	561	$	62,848	$	204


	December 31, 2017
	Recorded Investment in Loans						Allowance for Loan Losses
	Individually Evaluated for Impairment		Collectively Evaluated for Impairment		Acquired with Deterioriated Credit Quality		Individually Evaluated for Impairment		Collectively Evaluated for Impairment		Acquired with Deterioriated Credit Quality
	(Dollars in thousands)
Commercial and industrial	$	440	$	512,885	$	—	$	—	$	7,280	$	—
SBA		1,531		120,524		—		1		868		—
Real estate:
Commercial real estate		8,133		3,368,580		—		—		41,722		—
Construction		—		77,982		—		—		984		—
SFR mortgage		4,040		232,162		—		—		2,112		—
Dairy & livestock and agribusiness		829		346,460		—		—		4,647		—
Municipal lease finance receivables		—		70,243		—		—		851		—
Consumer and other loans		552		63,677		—		74		679		—
PCI loans		—		—		28,882		—		—		367
Total	$	15,525	$	4,792,513	$	28,882	$	75	$	59,143	$	367

Schedule of Recorded Investment in, and Aging of, Past Due and Nonaccrual Loans, Excluding PCI Loans by Class of Loans

The following tables present the recorded investment in, and the aging of, past due and nonaccrual loans, excluding PCI loans, by type of loans for the periods presented.


	December 31, 2018
	30-59 Days Past Due		60 - 89 Days Past Due		Total Past Due and Accruing		Nonaccrual (1) (3)		Current		Total Loans and Financing Receivables
	(Dollars in thousands)
Commercial and industrial	$	820	$	89	$	909	$	7,490	$	993,810	$	1,002,209
SBA		1,172		135		1,307		2,892		345,844		350,043
Real estate:
Commercial real estate
Owner occupied		2,439		350		2,789		589		2,114,612		2,117,990
Non-owner occupied		—		—		—		5,479		3,270,760		3,276,239
Construction
Speculative (2)		—		—		—		—		118,233		118,233
Non-speculative		—		—		—		—		4,549		4,549
SFR mortgage		—		285		285		2,937		293,282		296,504
Dairy & livestock and agribusiness		—		—		—		78		393,765		393,843
Municipal lease finance receivables		—		—		—		—		64,186		64,186
Consumer and other loans		—		—		—		486		127,943		128,429
Total gross loans, excluding PCI loans	$	4,431	$	859	$	5,290	$	19,951	$	7,726,984	$	7,752,225

(1)	As of December 31, 2018, $2.3 million of nonaccruing loans were current, $33,000 were 30-59 days past due, $57,000 were 60-89 days past due and $17.6 million were 90+ days past due.

(2)	Speculative construction loans are generally for properties where there is no identified buyer or renter.

(3)	Includes $12.3 million of nonaccrual loans acquired from CB in the third quarter of 2018.

	December 31, 2017
	30-59 Days Past Due		60-89 Days Past Due		Total Past Due and Accruing		Nonaccrual (1)		Current		Total Loans and Financing Receivables
	(Dollars in thousands)
Commercial and industrial	$	768	$	—	$	768	$	250	$	512,307	$	513,325
SBA		403		—		403		906		120,746		122,055
Real estate:
Commercial real estate
Owner occupied		—		—		—		4,365		1,091,915		1,096,280
Non-owner occupied		—		—		—		2,477		2,277,956		2,280,433
Construction
Speculative (2)		—		—		—		—		60,042		60,042
Non-speculative		—		—		—		—		17,940		17,940
SFR mortgage		—		—		—		1,337		234,865		236,202
Dairy & livestock and agribusiness		—		—		—		829		346,460		347,289
Municipal lease finance receivables		—		—		—		—		70,243		70,243
Consumer and other loans		1		—		1		552		63,676		64,229
Total gross loans, excluding PCI loans	$	1,172	$	—	$	1,172	$	10,716	$	4,796,150	$	4,808,038

(1)	As of December 31, 2017, $3.6 million of nonaccruing loans were current, $ 376 ,000 were 60-89 days past due and $6.8 million were 90+ days past due.

(2)	Speculative construction loans are generally for properties where there is no identified buyer or renter.

Schedule of Held-for-Investment Loans, Excluding PCI Loans, Individually Evaluated for Impairment by Class of Loans

The following tables present information for held-for-investment loans, excluding PCI loans, individually evaluated for impairment by type of loans, as and for the periods presented.

	As of and For the Year Ended December 31, 2018
	Recorded Investment		Unpaid Principal Balance		Related Allowance		Average Recorded Investment		Interest Income Recognized
	(Dollars in thousands)
With no related allowance recorded:
Commercial and industrial	$	7,436	$	11,457	$	—	$	7,718	$	7
SBA		3,467		5,746		—		3,919		44
Real estate:
Commercial real estate
Owner occupied		589		705		—		624		—
Non-owner occupied		2,808		4,324		—		4,585		32
Construction
Speculative		—		—		—		—		—
Non-speculative		—		—		—		—		—
SFR mortgage		5,349		6,270		—		5,484		80
Dairy & livestock and agribusiness		—		—		—		—		—
Municipal lease finance receivables		—		—		—		—		—
Consumer and other loans		418		526		—		459		—
Total		20,067		29,028		—		22,789		163
With a related allowance recorded:
Commercial and industrial		189		191		3		203		—
SBA		—		—		—		—		—
Real estate:
Commercial real estate
Owner occupied		—		—		—		—		—
Non-owner occupied		3,143		3,144		478		3,144		—
Construction
Speculative		—		—		—		—		—
Non-speculative		—		—		—		—		—
SFR mortgage		—		—		—		—		—
Dairy & livestock and agribusiness		78		78		12		78		—
Municipal lease finance receivables		—		—		—		—		—
Consumer and other loans		68		100		68		76		—
Total		3,478		3,513		561		3,501		—
Total impaired loans	$	23,545	$	32,541	$	561	$	26,290	$	163

	As of and For the Year Ended December 31, 2017
	Recorded Investment		Unpaid Principal Balance		Related Allowance		Average Recorded Investment		Interest Income Recognized
	(Dollars in thousands)
With no related allowance recorded:
Commercial and industrial	$	440	$	980	$	—	$	548	$	10
SBA		1,530		1,699		—		1,598		47
Real estate:
Commercial real estate
Owner occupied		4,365		4,763		—		4,414		36
Non-owner occupied		3,768		5,107		—		3,951		94
Construction
Speculative		—		—		—		—		—
Non-speculative		—		—		—		—		—
SFR mortgage		4,040		4,692		—		4,119		118
Dairy & livestock and agribusiness		829		1,091		—		988		1
Municipal lease finance receivables		—		—		—		—		—
Consumer and other loans		174		370		—		202		—
Total		15,146		18,702		—		15,820		306
With a related allowance recorded:
Commercial and industrial		—		—		—		—		—
SBA		1		18		1		6		—
Real estate:
Commercial real estate
Owner occupied		—		—		—		—		—
Non-owner occupied		—		—		—		—		—
Construction
Speculative		—		—		—		—		—
Non-speculative		—		—		—		—		—
SFR mortgage		—		—		—		—		—
Dairy & livestock and agribusiness		—		—		—		—		—
Municipal lease finance receivables		—		—		—		—		—
Consumer and other loans		378		391		74		385		—
Total		379		409		75		391		—
Total impaired loans	$	15,525	$	19,111	$	75	$	16,211	$	306

	As of and For the Year Ended December 31, 2016
	Recorded Investment		Unpaid Principal Balance		Related Allowance		Average Recorded Investment		Interest Income Recognized
	(Dollars in thousands)
With no related allowance recorded:
Commercial and industrial	$	730	$	1,646	$	—	$	832	$	26
SBA		3,386		4,189		—		3,709		50
Real estate:
Commercial real estate
Owner occupied		1,797		2,276		—		1,410		70
Non-owner occupied		13,331		15,842		—		13,517		592
Construction
Speculative		—		—		—		—		—
Non-speculative		—		—		—		—		—
SFR mortgage		5,174		6,075		—		5,327		135
Dairy & livestock and agribusiness		747		747		—		692		47
Municipal lease finance receivables		—		—		—		—		—
Consumer and other loans		853		1,423		—		919		18
Total		26,018		32,198		—		26,406		938
With a related allowance recorded:
Commercial and industrial		171		171		114		233		9
SBA		196		212		27		206		14
Real estate:
Commercial real estate
Owner occupied		—		—		—		—		—
Non-owner occupied		—		—		—		—		—
Construction
Speculative		—		—		—		—		—
Non-speculative		—		—		—		—		—
SFR mortgage		—		—		—		—		—
Dairy & livestock and agribusiness		—		—		—		—		—
Municipal lease finance receivables		—		—		—		—		—
Consumer and other loans		—		—		—		—		—
Total		367		383		141		439		23
Total impaired loans	$	26,385	$	32,581	$	141	$	26,845	$	961

Summary of Activity Related to Troubled Debt Restructurings

The following table provides a summary of the activity related to TDRs for the periods presented.


	For the Year Ended December 31,
	2018			2017
	(Dollars in thousands)
Performing TDRs:
Beginning balance	$	4,809		$	19,233
New modifications		311			3,143
Payoffs/payments, net and other		(1,526	)		(14,752	)
TDRs returned to accrual status		-			329
TDRs placed on nonaccrual status		-			(3,144	)
Ending balance	$	3,594		$	4,809
Nonperforming TDRs:
Beginning balance	$	4,200		$	1,626
New modifications		316			2,066
Charge-offs		-			-
Payoffs/payments, net and other		(1,007	)		(2,307	)
TDRs returned to accrual status		-			(329	)
TDRs placed on nonaccrual status		-			3,144
Ending balance	$	3,509		$	4,200
Total TDRs	$	7,103		$	9,009

Summary of Loans Modified as Troubled Debt Restructurings

The following tables summarize loans modified as troubled debt restructurings for the periods presented.

Modifications (1)

	For the Year Ended December 31, 2018
	Number of Loans		Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment		Outstanding Recorded Investment at December 31, 2018		Financial Effect Resulting From Modifications (2)
	(Dollars in thousands)
Commercial and industrial:
Interest rate reduction		-	$	-	$	-	$	-	$	-
Change in amortization period or maturity		1		38		38		20		-
Real estate:
Commercial real estate:
Owner occupied
Interest rate reduction		-		-		-		-		-
Change in amortization period or maturity		-		-		-		-		-
Non-owner occupied
Interest rate reduction		-		-		-		-		-
Change in amortization period or maturity		-		-		-		-		-
SFR mortgage:
Interest rate reduction		-		-		-		-		-
Change in amortization period or maturity		1		311		311		300		-
Dairy & livestock and agribusiness:
Interest rate reduction		-		-		-		-		-
Change in amortization period or maturity		-		-		-		-		-
Consumer:
Interest rate reduction		-		-		-		-		-
Change in amortization period or maturity		1		278		278		267		-
Total loans		3	$	627	$	627	$	587	$	-

	For the Year Ended December 31, 2017
	Number of Loans		Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment		Outstanding Recorded Investment at December 31, 2017		Financial Effect Resulting From Modifications (2)
	(Dollars in thousands)
Commercial and industrial:
Interest rate reduction		-	$	-	$	-	$	-	$	-
Change in amortization period or maturity		-		-		-		-		-
Real estate:
Commercial real estate:
Owner occupied
Interest rate reduction		-		-		-		-		-
Change in amortization period or maturity		1		3,143		3,143		3,143		-
Non-owner occupied
Interest rate reduction		-		-		-		-		-
Change in amortization period or maturity		-		-		-		-		-
SFR mortgage:
Interest rate reduction		-		-		-		-		-
Change in amortization period or maturity		-		-		-		-		-
Dairy & livestock and agribusiness:
Interest rate reduction		-		-		-		-		-
Change in amortization period or maturity		1		1,984		1,984		78		-
Consumer:
Interest rate reduction		-		-		-		-		-
Change in amortization period or maturity		-		-		-		-		-
Total loans		2	$	5,127	$	5,127	$	3,221	$	-

	For the Year Ended December 31, 2016
	Number of Loans		Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment		Outstanding Recorded Investment at December 31, 2016		Financial Effect Resulting From Modifications (2)
	(Dollars in thousands)
Commercial and industrial:
Interest rate reduction		1	$	112	$	112	$	103	$	-
Change in amortization period or maturity		-		-		-		-		-
SBA:
Interest rate reduction		-		-		-		-		-
Change in amortization period or maturity		2		214		214		196		28
Real estate:
Commercial real estate:
Owner occupied
Interest rate reduction		-		-		-		-		-
Change in amortization period or maturity		-		-		-		-		-
Non-owner occupied
Interest rate reduction		1		759		759		756		-
Change in amortization period or maturity		-		-		-		-		-
Dairy & livestock and agribusiness:
Interest rate reduction		-		-		-		-		-
Change in amortization period or maturity		-		-		-		-		-
SFR mortgage:
Interest rate reduction		-		-		-		-		-
Change in amortization period or maturity		3		201		201		185		-
Total loans		7	$	1,286	$	1,286	$	1,240	$	28

(1)	The tables above exclude modified loans that were paid off prior to the end of the period.

(2)	Financial effects resulting from modifications represent charge-offs and specific allowance recorded at modification date.

Other Real Estate Owned (Tables)

12 Months Ended

Dec. 31, 2018

Summary of Activity Related to Total OREO

The following table summarizes the activity related to total OREO for the periods presented.

	For the Year Ended December 31,
	2018			2017
	(Dollars in thousands)
Balance, beginning of period	$	4,527		$	4,527
Additions		420			—
Dispositions		(4,527	)		—
Valuation adjustments		—			—
Balance, end of period	$	420		$	4,527

Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Carrying Amount of Goodwill

The following table presents the changes in the carrying amount of goodwill for the periods presented.

	As of and for the Year Ended December 31,
	2018		2017
	(Dollars in thousands)
Balance, beginning of period	$	116,564	$	89,533
Additions due to acquisitions		549,975		27,031
Balance, end of period	$	666,539	$	116,564

Summary of Amortizable Intangible Assets

The following summarizes activity of amortizable core deposit intangible (“CDI”) assets for the periods presented.

	As of and For the Year Ended December 31,
	2018							2017
	Gross CDI Amount		Accumulated Amortization			Net CDI Amount		Gross CDI Amount		Accumulated Amortization			Net CDI Amount
	(Dollars in thousands)
Balance of intangible assets, beginning of period	$	41,097	$	(34,259	)	$	6,838	$	37,940	$	(32,930	)	$	5,010
Additions due to acquisitions		52,200							3,157
Balance of intangible assets, end of period	$	93,297	$	(39,513	)	$	53,784	$	41,097	$	(34,259	)	$	6,838
Aggregate amortization expense:
For year ended December 31,	$	5,254						$	1,329
Estimated Amortization Expense:
For the year ending December 31, 2019		10,798
For the year ending December 31, 2020		9,352
For the year ending December 31, 2021		8,240
For the year ending December 31, 2022		7,126
Thereafter		18,268

Premises and Equipment (Tables)

12 Months Ended

Dec. 31, 2018

Property, Plant and Equipment [Abstract]

Schedule of Premises and Equipment

Premises and equipment were comprised of the following for the periods presented.

	As of December 31,
	2018			2017
	(Dollars in thousands)
Land	$	19,929		$	14,489
Bank premises		73,188			65,215
Furniture and equipment		29,020			25,610
Premises and equipment, gross		122,137			105,314
Accumulated depreciation and amortization		(63,944	)		(59,148	)
Premises and equipment, net	$	58,193		$	46,166

Future Minimum Annual Rental Payments for Noncancelable Leases

	As of December 31, 2018
Year:	(Dollars in thousands)
2019	$	9,261
2020		5,918
2021		4,077
2022		2,819
2023		1,179
Thereafter		1,707
Total	$	24,961

Other Assets (Tables)

12 Months Ended

Dec. 31, 2018

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Summary of Other Assets

Other assets were comprised of the following for the periods presented.

	As of December 31,
	2018		2017
	(Dollars in thousands)
Prepaid expenses	$	6,393	$	4,538
Interest rate swaps		1,938		3,211
Affordable housing investments		15,995		5,977
Other investments		33,031		801
Other assets		10,450		10,790
Total	$	67,807	$	25,317

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2018

Income Tax Disclosure [Abstract]

Schedule of Income Tax Expense

The current and deferred amounts of income tax expense consist of the following.

	For the Year Ended December 31,
	2018		2017		2016
	(Dollars in thousands)
Current provision:
Federal	$	31,055	$	44,153	$	41,195
State		20,546		17,151		17,944
		51,601		61,304		59,139
Deferred provision:
Federal		5,158		20,926		1,208
State		2,353		2,154		510
		7,511		23,080		1,718
Total	$	59,112	$	84,384	$	60,857

Schedule of Income Tax Asset

Income tax asset consists of the following.

	As of December 31,
	2018		2017
	(Dollars in thousands)
Current:
Federal	$	12,303	$	11,713
State		6,800		2,946
		19,103		14,659
Deferred:
Federal		27,334		16,557
State		15,737		8,830
		43,071		25,387
Total	$	62,174	$	40,046

Components of Net Deferred Tax Asset

Temporary differences between the amounts reported in the financial statements and the tax bases of assets and liabilities resulted in deferred taxes.

The components of the net deferred tax asset are as follows.


	As of December 31,
	2018		2017
	(Dollars in thousands)
Deferred tax assets:
Bad debt and credit loss deduction	$	22,402	$	19,911
Net operating loss carryforward		141		207
Deferred compensation		6,109		5,501
PCI loans		2,556		3,098
California franchise tax		837		1,618
Accrued expense		4,865		1,365
Unrealized loss on investment securities, net		7,508		-
Acquired loan discounts		25,555		2,081
Other, net		2,624		1,272
Gross deferred tax asset		72,597		35,053
Deferred tax liabilities:
Depreciation		4,440		975
Intangibles - acquistions		19,843		3,404
FHLB Stock		2,527		2,400
Deferred income		2,716		2,112
Unrealized gain on investment securities, net		-		775
Gross deferred tax liability		29,526		9,666
Net deferred tax asset	$	43,071	$	25,387

Reconciliation of Statutory Income Tax Rate to Consolidated Effective Income Tax Rate

The annual consolidated effective tax rate for the periods presented, is reconciled to the U.S. statutory income rate as follows.

	For the Year Ended December 31,
	2018						2017						2016
	Amount			Percent			Amount			Percent			Amount			Percent
	(Dollars in thousands)
Federal income tax at statutory rate	$	44,334			21.0	%	$	66,078			35.0	%	$	56,800			35.0	%
State franchise taxes, net of federal benefit		17,905			8.5	%		12,903			6.9	%		11,299			7.0	%
Tax-exempt income		(2,991	)		-1.4	%		(4,450	)		-2.4	%		(5,848	)		-3.6	%
Tax credits		(1,451	)		-0.7	%		(1,096	)		-0.6	%		(846	)		-0.5	%
Deferred tax asset revaluation adjustment		-			-			13,208			7.0	%		-			-
Other, net		1,315			0.6	%		(2,259	)		-1.2	%		(548	)		-0.4	%
Provision for income taxes	$	59,112			28.0	%	$	84,384			44.7	%	$	60,857			37.5	%

Deposits (Tables)

12 Months Ended

Dec. 31, 2018

Scheduled Maturities of Time Certificates of Deposit

Composition of Deposits

The composition of deposits is summarized for the periods presented in the table below.

	As of December 31,
	2018					2017
	Amount		Percent			Amount		Percent
	(Dollars in thousands)
Noninterest-bearing deposits	$	5,204,787		58.96	%	$	3,846,436		58.75	%
Interest-bearing deposits:
Investment checking		460,972		5.22	%		433,971		6.63	%
Money market		2,236,018		25.33	%		1,517,050		23.17	%
Savings		393,769		4.46	%		364,049		5.56	%
Time deposits		531,944		6.03	%		385,347		5.89	%
Total deposits	$	8,827,490		100.00	%	$	6,546,853		100.00	%

At December

2018

, the scheduled maturities of time certificates of deposit are as follows.

	December 31, 2018
Year of maturity:	(Dollars in thousands)
2019	$	398,735
2020		70,898
2021		46,710
2022		5,320
2023 and thereafter		10,281
Total	$	531,944

Earnings Per Share Reconciliation (Tables)

12 Months Ended

Dec. 31, 2018

Earnings Per Share [Abstract]

Schedule of Earnings Per Common Share Reconciliation

The table below shows earnings per common share and diluted earnings per common share, and reconciles the numerator and denominator of both earnings per common share calculations.


	For the Year Ended December 31,
	2018		2017		2016
	(In thousands, except per share amounts)
Earnings per common share:
Net earnings	$	152,003	$	104,411	$	101,429
Less: Net earnings allocated to restricted stock		429		382		421
Net earnings allocated to common shareholders	$	151,574	$	104,029	$	101,008
Weighted average shares outstanding		121,670		109,409		107,282
Basic earnings per common share	$	1.25	$	0.95	$	0.94
Diluted earnings per common share:
Net income allocated to common shareholders	$	151,574	$	104,029	$	101,008
Weighted average shares outstanding		121,670		109,409		107,282
Incremental shares from assumed exercise of outstanding options		287		398		405
Diluted weighted average shares outstanding		121,957		109,807		107,687
Diluted earnings per common share	$	1.24	$	0.95	$	0.94

Stock-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Estimated Fair Value of Stock Options

The fair value of each stock option granted in

2018

2017

and

2016

, was estimated on the date of grant using the following weighted-average assumptions.

	For the Year Ended December 31,
	2018		2017		2016
Dividend yield		2.4%		2.2%		2.9%
Volatility		25.4%		29.6%		33.1%
Risk-free interest rate		2.9%		1.8%		1.2%
Expected life		5.4 years		5.6 years		5.6 years
Weighted average grant date fair value	$	5.08	$	5.17	$	3.96

Option Activity under Company's Stock Option Plans

The following table presents option activity under the Company’s stock option plans as of and for the year ended December 31, 2018.

	Number of Stock Options Outstanding			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term		Aggregate Intrinsic Value
	(In thousands)					(In years)		(In thousands)
Outstanding at January 1, 2018		588		$	13.12
Granted		141			23.73
Exercised		(167	)		10.21
Forfeited or expired		(30	)		15.07
Outstanding at December 31, 2018		532		$	16.73		6.26	$	2,368
Vested or expected to vest at December 31, 2018		514		$	16.73		6.23	$	2,303
Exercisable at December 31, 2018		275		$	13.29		4.31	$	1,915

Summary of Status of Company's Non-Vested Restricted Shares

The table below summarizes activity related to the Company’s non-vested

RSAs and RSUs

for the year ended December 31, 2018.

	Shares			Weighted Average Fair Value
	(In thousands)
Nonvested at January 1, 2018		376		$	16.82
Granted		424			23.84
Vested		(158	)		16.50
Forfeited		(18	)		20.57
Nonvested at December 31, 2018		624		$	21.56

Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2018

Regulatory Capital Amounts and Ratios for Company and Bank

of December 31, 2018 and 2017.

												To Be Well
						For Capital						Capitalized under Prompt Corrective
	Actual					Adequacy Purposes						Action Provisions
	Amount		Ratio			Amount			Ratio			Amount			Ratio
	(Dollars in thousands)
As of December 31, 2018:
Total Capital (to Risk-Weighted Assets)
Company	$	1,263,800		14.13	%	$	715,283	>		8.00	%					N/A
Bank	$	1,253,219		14.03	%	$	714,601	>		8.00	%	$	893,251	>		10.00	%
Tier 1 Capital (to Risk-Weighted Assets)
Company	$	1,191,228		13.32	%	$	536,462	>		6.00	%					N/A
Bank	$	1,180,647		13.22	%	$	535,951	>		6.00	%	$	714,601	>		8.00	%
Common equity Tier 1 capital ratio
Company	$	1,166,228		13.04	%	$	402,347	>		4.50	%					N/A
Bank	$	1,180,647		13.22	%	$	401,963	>		4.50	%	$	580,613	>		6.50	%
Tier 1 Capital (to Average- Assets)
Company	$	1,191,228		10.98	%	$	433,834	>		4.00	%					N/A
Bank	$	1,180,647		10.90	%	$	433,403	>		4.00	%	$	541,754	>		5.00	%
As of December 31, 2017:
Total Capital (to Risk-Weighted Assets)
Company	$	1,039,060		18.01	%	$	461,574	>		8.00	%					N/A
Bank	$	1,029,126		17.86	%	$	461,037	>		8.00	%	$	576,296	>		10.00	%
Tier 1 Capital (to Risk-Weighted Assets)
Company	$	973,169		16.87	%	$	346,180	>		6.00	%					N/A
Bank	$	963,235		16.71	%	$	345,778	>		6.00	%	$	461,037	>		8.00	%
Common equity Tier 1 capital ratio
Company	$	948,210		16.43	%	$	259,635	>		4.50	%					N/A
Bank	$	963,235		16.71	%	$	259,333	>		4.50	%	$	374,592	>		6.50	%
Tier 1 Capital (to Average- Assets)
Company	$	973,169		11.88	%	$	327,680	>		4.00	%					N/A
Bank	$	963,235		11.77	%	$	327,397	>		4.00	%	$	409,246	>		5.00	%

Fair Value Information (Tables)

12 Months Ended

Dec. 31, 2018

Fair Value Disclosures [Abstract]

Assets and Liabilities Measured at Fair Value on a Recurring Basis

	Carrying Value at December 31, 2018		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	(Dollars in thousands)
Description of assets
Investment securities - AFS:
Residential mortgage-backed securities	$	1,474,508	$	-	$	1,474,508	$	-
CMO/REMIC - residential		214,051		-		214,051		-
Municipal bonds		44,810		-		44,810		-
Other securities		716		-		716		-
Total investment securities - AFS		1,734,085		-		1,734,085		-
Interest rate swaps		1,938		-		1,938		-
Total assets	$	1,736,023	$	-	$	1,736,023	$	-
Description of liability
Interest rate swaps	$	1,938	$	-	$	1,938	$	-
Total liabilities	$	1,938	$	-	$	1,938	$	-

	Carrying Value at December 31, 2017		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	(Dollars in thousands)
Description of assets
Investment securities - AFS:
Residential mortgage-backed securities	$	1,750,909	$	-	$	1,750,909	$	-
CMO/ REMIC - residential		273,829		-		273,829		-
Municipal bonds		55,496		-		55,496		-
Other securities		751		-		751		-
Total investment securities - AFS		2,080,985		-		2,080,985		-
Interest rate swaps		3,211		-		3,211		-
Total assets	$	2,084,196	$	-	$	2,084,196	$	-
Description of liability
Interest rate swaps	$	3,211	$	-	$	3,211	$	-
Total liabilities	$	3,211	$	-	$	3,211	$	-

Assets and Liabilities Measured at Fair Value on Non-Recurring Basis

the following tables provide the level of valuation assumptions used to determine each adjustment and the carrying value of the related assets that had losses during the period

	Carrying Value at December 31, 2018		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Losses For the Year Ended December 31, 2018
	(Dollars in thousands)
Description of assets
Impaired loans, excluding PCI loans:
Commercial and industrial	$	189	$	-	$	-	$	189	$	3
SBA		-		-		-		-		-
Real estate:
Commercial real estate		3,143		-		-		3,143		478
Construction		-		-		-		-		-
SFR mortgage		-		-		-		-		-
Dairy & livestock and agribusiness		78		-		-		78		12
Consumer and other loans		68		-		-		68		68
Other real estate owned		-		-		-		-		-
Asset held-for-sale		-		-		-		-		-
Total assets	$	3,478	$	-	$	-	$	3,478	$	561

	Carrying Value at December 31, 2017		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Losses For the Year Ended December 31, 2017
	(Dollars in thousands)
Description of assets
Impaired loans, excluding PCI loans:
Commercial and industrial	$	-	$	-	$	-	$	-	$	-
SBA		-		-		-		-		-
Real estate:
Commercial real estate		-		-		-		-		-
Construction		-		-		-		-		-
SFR mortgage		-		-		-		-		-
Dairy & livestock and agribusiness		-		-		-		-		-
Consumer and other loans		378		-		-		378		74
Other real estate owned		-		-		-		-		-
Asset held-for-sale		-		-		-		-		-
Total assets	$	378	$	-	$	-	$	378	$	74

Estimated Fair Value of Financial Instruments

The use of different market assumptions and/or estimation methodologies may have a material effect on the estimated fair value amounts.


	December 31, 2018
			Estimated Fair Value
	Carrying Amount		Level 1		Level 2		Level 3		Total
	(Dollars in thousands)
Assets
Total cash and cash equivalents	$	163,948	$	163,948	$	-	$	-	$	163,948
Interest-earning balances due from depository institutions		7,670		-		7,339		-		7,339
Investment securities available-for-sale		1,734,085		-		1,734,085		-		1,734,085
Investment securities held-to-maturity		744,440		-		721,537		-		721,537
Total loans, net of allowance for loan losses (1)		7,700,998		-		-		7,514,964		7,514,964
Swaps		1,938		-		1,938		-		1,938
Liabilities
Deposits:
Interest-bearing	$	3,622,703	$	-	$	3,614,682	$	-	$	3,614,682
Borrowings		722,255		-		721,601		-		721,601
Junior subordinated debentures		25,774		-		-		21,176		21,176
Swaps		1,938		-		1,938		-		1,938

(1)	The fair value of loans as of December 31, 2018 was measured using an exit price notion.

	December 31, 2017
			Estimated Fair Value
	Carrying Amount		Level 1		Level 2		Level 3		Total
	(Dollars in thousands)
Assets
Total cash and due from banks	$	144,377	$	144,377	$	-	$	-	$	144,377
Interest-earning balances due from depository institutions		17,952		-		17,951		-		17,951
FHLB stock		17,688		-		17,688		-		17,688
Investment securities available-for-sale		2,080,985		-		2,080,985		-		2,080,985
Investment securities held-to-maturity		829,890		-		819,215		-		819,215
Total loans, net of allowance for loan losses		4,771,046		-		-		4,678,402		4,678,402
Swaps		3,211		-		3,211		-		3,211
Liabilities
Deposits:
Noninterest-bearing	$	3,846,436	$	3,846,436	$	-	$	-	$	3,846,436
Interest-bearing		2,700,417		-		2,697,781		-		2,697,781
Borrowings		553,773		-		553,416		-		553,416
Junior subordinated debentures		25,774		-		-		18,070		18,070
Swaps		3,211		-		3,211		-		3,211

Business Segments (Tables)

12 Months Ended

Dec. 31, 2018

Segment Reporting [Abstract]

Schedule of Segment Reporting Information by Segment

Derivative Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Fair Value of Derivative Instruments

December 31, 2018

Asset Derivatives

Liability Derivatives

Balance Sheet

Location

Fair

Value

Balance Sheet

Location

Fair

Value

(Dollars in thousands)

Derivatives not designated as hedging instruments:

Interest rate swaps

Other assets

1,938

Other liabilities

1,938

Total derivatives

1,938

December 31, 2017

Asset Derivatives

Liability Derivatives

Balance Sheet

Location

Fair

Value

Balance Sheet

Location

Fair

Value

(Dollars in thousands)

Derivatives not designated as hedging instruments:

Interest rate swaps

Other assets

3,211

Other liabilities

3,211

Total derivatives

3,211

Effect of Derivative Instruments on Consolidated Statement of Earnings

The following table summarizes the effect of derivative financial instruments on the consolidated statements of earnings for the periods presented.

Derivatives Not Designated as Hedging Instruments	Location of Gain Recognized in Income on Derivative Instruments		Amount of Gain Recognized in Income on Derivative Instruments
			For the Year Ended December 31,
			2018		2017		2016
			(Dollars in thousands)
Interest rate swaps		Other income	$	340	$	615	$	691
Total			$	340	$	615	$	691

Other Comprehensive Income (Loss) (Tables)

12 Months Ended

Dec. 31, 2018

Equity [Abstract]

Summary of Components of Other Comprehensive Income

The tables below provide a summary of the components of OCI for the periods presented.

	For the Year Ended December 31,
	2018								2017								2016
	Before-tax			Tax effect		After-tax			Before-tax			Tax effect		After-tax			Before-tax			Tax effect		After-tax
	(Dollars in thousands)
Investment securities:
Net change in fair value recorded in accumulated OCI	$	(26,435	)	$	7,815	$	(18,620	)	$	(11,336	)	$	4,760	$	(6,576	)	$	(15,792	)	$	6,633	$	(9,159	)
Amortization of unrealized (gains)/ losses on securities transferred from available-for-sale to held-to-maturity		(2,091	)		619		(1,472	)		(3,293	)		1,383		(1,910	)		(2,174	)		913		(1,261	)
Net realized (gain)/loss reclassified into earnings (1)		—			—		—			(402	)		169		(233	)		(548	)		230		(318	)
Net change	$	(28,526	)	$	8,434	$	(20,092	)	$	(15,031	)	$	6,312	$	(8,719	)	$	(18,514	)	$	7,776	$	(10,738	)

(1)	Included in other noninterest income.

Balance Sheet Offsetting (Tables)

12 Months Ended

Dec. 31, 2018

Schedule of Balance Sheet Offsetting

The repurchase agreements are not offset in the condensed consolidated balances.

	Gross Amounts Recognized in		Gross Amounts Offset in the			Net Amounts of Assets Presented		Gross Amounts Not Offset in the Consolidated Balance Sheets
	the Consolidated Balance Sheets		Consolidated Balance Sheets			in the Consolidated		Financial Instruments		Collateral Pledged			Net Amount
	(Dollars in thousands)
December 31, 2018
Financial assets:
Derivatives not designated as hedging instruments	$	1,938	$	—		$	—	$	1,938	$	—		$	1,938
Total	$	1,938	$	—		$	—	$	1,938	$	—		$	1,938
Financial liabilities:
Derivatives not designated as hedging instruments	$	4,203	$	(2,265	)	$	1,938	$	2,265	$	—		$	4,203
Repurchase agreements		442,255		—			442,255		—		(487,607	)		(45,352	)
Total	$	446,458	$	(2,265	)	$	444,193	$	2,265	$	(487,607	)	$	(41,149	)
December 31, 2017
Financial assets:
Derivatives not designated as hedging instruments	$	3,211	$	—		$	—	$	3,211	$	—		$	3,211
Total	$	3,211	$	—		$	—	$	3,211	$	—		$	3,211
Financial liabilities:
Derivatives not designated as hedging instruments	$	4,495	$	(1,284	)	$	3,211	$	1,284	$	(12,760	)	$	(8,265	)
Repurchase agreements		553,773		—			553,773		—		(573,759	)		(19,986	)
Total	$	558,268	$	(1,284	)	$	556,984	$	1,284	$	(586,519	)	$	(28,251	)

Revenue Recognition (Tables)

12 Months Ended

Dec. 31, 2018

Revenue from Contract with Customer [Abstract]

Summary of Non Interest Income, Segregated by Revenue Streams in-Scope and Out-of-Scope of Topic 606

The following presents noninterest income, segregated by revenue streams in-scope and out-of-scope of Topic 606, for the periods indicated.

	For the Year Ended December 31,
	2018		2017		2016
	(Dollars in thousands)
Noninterest income:
In-scope of Topic 606:
Service charges on deposit accounts	$	17,070	$	15,809	$	15,066
Trust and investment services		8,774		9,845		9,595
Bankcard services		3,485		3,406		2,921
Gain on OREO, net		3,546		6		(20	)
Other		6,588		4,888		3,457
Noninterest Income (in-scope of Topic 606)		39,463		33,954		31,019
Noninterest Income (out-of-scope of Topic 606)		4,018		8,164		4,533
Total noninterest income	$	43,481	$	42,118	$	35,552

Condensed Financial Information of Parent Company (Tables)

12 Months Ended

Dec. 31, 2018

Condensed Financial Information Disclosure [Abstract]

Condensed Balance Sheets

CONDENSED BALANCE SHEETS

	As of December 31,
	2018		2017
	(Dollars in thousands)
Assets
Investment in subsidiaries	$	1,865,609	$	1,084,332
Other assets, net		31,628		26,703
Total assets	$	1,897,237	$	1,111,035
Liabilities	$	46,047	$	41,769
Stockholders’ equity		1,851,190		1,069,266
Total liabilities and stockholders’ equity	$	1,897,237	$	1,111,035

Condensed Statements of Earnings

CONDENSED STATEMENTS OF EARNINGS

	For the Year Ended December 31,
	2018			2017			2016
	(Dollars in thousands)
Excess in net earnings of subsidiaries	$	78,601		$	50,253		$	55,192
Dividends from the Bank		77,800			57,000			49,000
Other expense, net		(4,398	)		(2,842	)		(2,763	)
Net earnings	$	152,003		$	104,411		$	101,429

Condensed Statements of Cash Flows

CONDENSED STATEMENTS OF CASH FLOWS

	For the Year Ended December 31,
	2018			2017			2016
	(Dollars in thousands)
Cash Flows from Operating Activities
Net earnings	$	152,003		$	104,411		$	101,429
Adjustments to reconcile net earnings to cash used in operating activities:
Earnings of subsidiaries		(156,401	)		(107,253	)		(104,192	)
Tax settlement received from the Bank		—			1,577			2,557
Stock-based compensation		3,508			2,953			2,803
Other operating activities, net		(2,052	)		(1,725	)		(3,362	)
Total adjustments		(154,945	)		(104,448	)		(102,194	)
Net cash used in operating activities		(2,942	)		(37	)		(765	)
Cash Flows from Investing Activities
Dividends received from the Bank		77,800			57,000			49,000
Net cash provided by investing activities		77,800			57,000			49,000
Cash Flows from Financing Activities
Cash dividends on common stock		(65,966	)		(57,047	)		(51,625	)
Proceeds from exercise of stock options		1,701			2,683			5,151
Tax benefit related to exercise of stock options		—			—			932
Repurchase of common stock		(7,760	)		(1,128	)		(1,907	)
Net cash used in financing activities		(72,025	)		(55,492	)		(47,449	)
Net increase in cash and cash equivalents		2,833			1,471			786
Cash and cash equivalents, beginning of period		19,217			17,746			16,960
Cash and cash equivalents, end of period	$	22,050		$	19,217		$	17,746

Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2018

Quarterly Financial Information Disclosure [Abstract]

Summarized Quarterly Financial Data

The following table sets forth our unaudited, quarterly results for the periods indicated.


	For the Three Months Ended
	December 31,			September 30,			June 30,			March 31,
	(Dollars in thousands, except per share amounts)
2018
Net interest income	$	113,016		$	92,820		$	72,688		$	70,521
Provision for (recapture of) loan losses		3,000			500			(1,000	)		(1,000	)
Net earnings		43,159			38,558			35,373			34,913
Basic earnings per common share		0.31			0.30			0.32			0.32
Diluted earnings per common share		0.31			0.30			0.32			0.32
2017
Net interest income	$	71,275		$	71,739		$	70,483		$	65,433
Recapture of provision for loan losses		(1,500	)		(1,500	)		(1,000	)		(4,500	)
Net earnings		17,851			29,683			28,373			28,504
Basic earnings per common share		0.16			0.27			0.26			0.26
Diluted earnings per common share		0.16			0.27			0.26			0.26

Business - Additional Information (Detail) $ in Millions	Mar. 10, 2017 USD ($) Branch	Feb. 29, 2016 USD ($) Branch	Dec. 31, 2018 Subsidiary Location	Aug. 10, 2018 USD ($)
Schedule Of Description Of Company [Line Items]
Number of inactive subsidiaries \| Subsidiary			1
Bank operated banking centers \| Location			68
Bank operated trust office locations, number \| Location			3
Valley Commerce Bancorp [Member]
Schedule Of Description Of Company [Line Items]
Total assets	$ 400
Number of bank branches acquired \| Branch	4
County Commerce Bank [Member]
Schedule Of Description Of Company [Line Items]
Total assets		$ 253
Number of bank branches acquired \| Branch		4
Community Bank [Member]
Schedule Of Description Of Company [Line Items]
Bank operated banking centers				16
Total assets				$ 4,090

Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2018 USD ($) Segment Office	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Oct. 16, 2009
Summary Of Significant Accounting Policies [Line Items]
Number of operating business segments \| Segment	2
Net unrealized holding gain after tax	$ (20,092,000)	$ (8,719,000)	$ (10,738,000)
Number of days on which collection of interest on principal is no longer probable	90 days
Period over which borrower has to demonstrate repayment performance in compliance with restructured terms to take loan out of nonaccrual status	6 months
Original terms of modified loans	6 months
Number of days on which charge-offs unsecured consumer loans are recorded	120 days
Minimum loan amount for credit review process	$ 1,000,000
Allowance for loan losses look-back period, revised	Rolling 20-quarters
Agreed percentage of losses in loss sharing agreement				80.00%
Commercial loans expiration date	Oct. 16, 2014
Goodwill impairment	$ 0
Number of offices providing services, CitizensTrust \| Office	3
Assets under administration, CitizensTrust	$ 2,540,000,000
Assets under management, CitizensTrust	$ 1,800,000,000
Single-family Residential Loans [Member]
Summary Of Significant Accounting Policies [Line Items]
Commercial loans expiration date	Oct. 16, 2019
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Number of days over which principal or interest payments are past due to consider loans, excluding PCI loans	30 days
Number of days for which principal or interest payments on loans, excluding PCI loans remain accrual	30 days
Length of modified debt term	3 months
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Number of days for which principal or interest payments on loans, excluding PCI loans remain accrual	89 days

Summary of Significant Accounting Policies - Summary of Useful Lives of Principal Classes of Assets (Detail)	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Estimated economic lives of leasehold improvements	Shorter of estimated economic lives of 15 years or term of the lease.
Minimum [Member] \| Bank Premises [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life of asset	15 years
Minimum [Member] \| Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life of asset	3 years
Minimum [Member] \| Furniture, Fixtures and Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life of asset	5 years
Maximum [Member] \| Bank Premises [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life of asset	39 years
Maximum [Member] \| Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life of asset	7 years
Maximum [Member] \| Furniture, Fixtures and Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life of asset	10 years

Business Combinations - Additional Information (Detail)				12 Months Ended
Business Combinations - Additional Information (Detail)	Aug. 10, 2018 USD ($) Branch	Mar. 10, 2017 USD ($) Branch	Feb. 29, 2016 USD ($) Branch	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Business Acquisition [Line Items]
Acquisition date				Oct. 16, 2009
Goodwill				$ 666,539,000	$ 116,564,000	$ 89,533,000
Merger related expenses				$ 16,404,000	2,251,000	$ 1,897,000
Valley Commerce Bancorp [Member]
Business Acquisition [Line Items]
Acquisition date				Mar. 10, 2017
Acquired assets and assumed liabilities for cash		$ 23,200,000
Assets and assumed all of the liabilities, stock		37,600,000
Goodwill		27,000,000
Core deposit intangible assets		3,200,000
Total fair value of assets acquired		405,900,000
Cash and cash equivalents		28,300,000
FHLB stock		2,000,000
Loans and lease finance receivables		309,700,000
Fixed assets		5,300,000
Bank-Owned Life Insurance		9,400,000
Other assets		21,000,000
Total fair value of liabilities assumed		368,300,000
Deposits		361,800,000
Other liabilities		$ 6,500,000
Merger related expenses				$ 0	2,100,000
Valley Business Bank [Member]
Business Acquisition [Line Items]
Number of branches owned by merger company \| Branch		4
Community Bank [Member]
Business Acquisition [Line Items]
Acquisition date				Aug. 10, 2018
Number of branches owned by merger company \| Branch	16
Acquired assets and assumed liabilities for cash	$ 180,719,000
Assets and assumed all of the liabilities, stock	722,767,000
Goodwill	549,975,000
Core deposit intangible assets	$ 52,200,000
Percentage of core deposits to total deposits	2.26%
Total fair value of assets acquired	$ 3,716,260,000
Cash and cash equivalents	47,802,000
FHLB stock	17,250,000
Loans and lease finance receivables	2,734,081,000
Bank-Owned Life Insurance	70,904,000
Other assets	54,479,000
Total fair value of liabilities assumed	353,511,000
Deposits	2,869,986,000
Other liabilities	29,192,000
Merger related expenses				$ 16,400,000
FHLB advances	166,000,000
Gross contractual amount receivable, as of acquisition date	3,000,000,000
contractual principal cash flows, loans not expected to be collected	$ 4,500,000
County Commerce Bank [Member]
Business Acquisition [Line Items]
Acquisition date				Feb. 29, 2016
Number of branches owned by merger company \| Branch			4
Acquired assets and assumed liabilities for cash			$ 20,600,000
Assets and assumed all of the liabilities, stock			21,600,000
Goodwill			15,300,000
Core deposit intangible assets			3,900,000
Total fair value of assets acquired			252,400,000
Cash and cash equivalents			54,800,000
FHLB stock			1,500,000
Loans and lease finance receivables			168,000,000
Fixed assets			8,600,000
Other assets			289,000
Total fair value of liabilities assumed			230,800,000
Deposits			224,200,000
Other liabilities			1,600,000
Merger related expenses				$ 0	$ 145,000
FHLB advances			$ 5,000,000

Business Combinaions - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands	Aug. 10, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Liabilities assumed
Goodwill		$ 666,539	$ 116,564	$ 89,533
Community Bank [Member]
Merger Consideration
Cash paid	$ 180,719
CVBF common stock issued	722,767
Total merger consideration	903,486
Assets Acquired
Cash and cash equivalents	47,802
Investment securities	716,996
FHLB stock	17,250
Loans	2,734,081
Accrued interest receivable	7,916
Premises and equipment	14,632
BOLI	70,904
Core deposit intangible	52,200
Other assets	54,479
Total assets acquired	3,716,260
Liabilities assumed
Deposits	2,869,986
FHLB advances	297,571
Other borrowings	166,000
Other liabilities	29,192
Total liabilities assumed	3,362,749
Total fair value of identifiable net assets, at fair value	353,511
Goodwill	$ 549,975

Business Combinations - Business Acquisition Pro Forma Information (Detail) - Community Bank [Member] - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Business Acquisitions ProForma Information [Line Items]
Total revenues (net interest income plus noninterest income)	$ 488,620	$ 477,235
Net Income	$ 181,433	$ 139,129
Earnings per share - basic	$ 1.30	$ 1.00
Earnings per share - diluted	$ 1.29	$ 0.99

Investment Securities - Summary of Amortized Cost and Estimated Fair Value of Investment Securities (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Schedule of Investments [Line Items]
Amortized Cost, Available-for-sale	$ 1,757,666	$ 2,078,131
Gross Unrealized Holding Gain, Available-for-sale	2,033	13,282
Gross Unrealized Holding Loss, Available-for-sale	(25,614)	(10,428)
Fair Value, Available-for-sale	$ 1,734,085	$ 2,080,985
Total Percent, Available-for-sale	100.00%	100.00%
Amortized Cost, Held-to-maturity	$ 744,440	$ 829,890
Gross Unrealized Holding Gain, Held-to-maturity	1,128	4,272
Gross Unrealized Holding Loss, Held-to-maturity	(24,031)	(14,947)
Fair Value, Held-to-maturity	$ 721,537	$ 819,215
Total Percent, Held-to-maturity	100.00%	100.00%
CMO/REMIC - Residential [Member]
Schedule of Investments [Line Items]
Amortized Cost, Available-for-sale	$ 217,223	$ 274,634
Gross Unrealized Holding Gain, Available-for-sale	353	1,277
Gross Unrealized Holding Loss, Available-for-sale	(3,525)	(2,082)
Fair Value, Available-for-sale	$ 214,051	$ 273,829
Total Percent, Available-for-sale	12.34%	13.16%
Amortized Cost, Held-to-maturity	$ 215,336	$ 225,072
Gross Unrealized Holding Gain, Held-to-maturity	0	0
Gross Unrealized Holding Loss, Held-to-maturity	(12,081)	(8,641)
Fair Value, Held-to-maturity	$ 203,255	$ 216,431
Total Percent, Held-to-maturity	28.93%	27.12%
Government Agency/GSE [Member]
Schedule of Investments [Line Items]
Amortized Cost, Held-to-maturity	$ 138,274	$ 159,716
Gross Unrealized Holding Gain, Held-to-maturity	572	854
Gross Unrealized Holding Loss, Held-to-maturity	(2,622)	(2,134)
Fair Value, Held-to-maturity	$ 136,224	$ 158,436
Total Percent, Held-to-maturity	18.57%	19.25%
Residential Mortgage-backed Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost, Available-for-sale	$ 1,494,106	$ 1,747,780
Gross Unrealized Holding Gain, Available-for-sale	1,348	11,231
Gross Unrealized Holding Loss, Available-for-sale	(20,946)	(8,102)
Fair Value, Available-for-sale	$ 1,474,508	$ 1,750,909
Total Percent, Available-for-sale	85.03%	84.14%
Amortized Cost, Held-to-maturity	$ 153,874	$ 176,427
Gross Unrealized Holding Gain, Held-to-maturity	0	667
Gross Unrealized Holding Loss, Held-to-maturity	(3,140)	(382)
Fair Value, Held-to-maturity	$ 150,734	$ 176,712
Total Percent, Held-to-maturity	20.67%	21.26%
Municipal Bonds [Member]
Schedule of Investments [Line Items]
Amortized Cost, Available-for-sale	$ 45,621	$ 54,966
Gross Unrealized Holding Gain, Available-for-sale	332	774
Gross Unrealized Holding Loss, Available-for-sale	(1,143)	(244)
Fair Value, Available-for-sale	$ 44,810	$ 55,496
Total Percent, Available-for-sale	2.59%	2.66%
Amortized Cost, Held-to-maturity	$ 236,956	$ 268,675
Gross Unrealized Holding Gain, Held-to-maturity	556	2,751
Gross Unrealized Holding Loss, Held-to-maturity	(6,188)	(3,790)
Fair Value, Held-to-maturity	$ 231,324	$ 267,636
Total Percent, Held-to-maturity	31.83%	32.37%
Other Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost, Available-for-sale	$ 716	$ 751
Gross Unrealized Holding Gain, Available-for-sale	0	0
Gross Unrealized Holding Loss, Available-for-sale	0	0
Fair Value, Available-for-sale	$ 716	$ 751
Total Percent, Available-for-sale	0.04%	0.04%

Investment Securities - Summary of Interest Income Earned on Investment Securities (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Net Investment Income [Line Items]
Total interest income from available-for-sale securities	$ 45,988	$ 49,778	$ 47,702
Total interest income from held-to-maturity securities	18,901	21,015	20,227
Total investment income	64,889	70,793	67,929
Investment securities available-for-sale [Member]
Net Investment Income [Line Items]
Taxable	44,423	47,596	43,538
Tax-advantaged	1,565	2,182	4,164
Investment securities held-to-maturity [Member]
Net Investment Income [Line Items]
Taxable	11,848	12,558	10,183
Tax-advantaged	$ 7,053	$ 8,457	$ 10,044

Investment Securities - Summary of Continuous Unrealized Loss Position of Securities (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Schedule of Investments [Line Items]
Fair Value, Less Than 12 Months, Available-for-sale	$ 738,461	$ 510,174
Gross Unrealized Holding Losses, Less Than 12 Months, Available-for-sale	(5,417)	(2,319)
Fair Value, 12 Months or Longer, Available-for-sale	742,610	388,925
Gross Unrealized Holding Losses, 12 Months or Longer, Available-for-sale	(20,197)	(8,109)
Fair Value, Available-for-sale	1,481,071	899,099
Gross Unrealized Holding Losses, Available-for-sale	(25,614)	(10,428)
Fair Value, Less Than 12 Months, Held-to-maturity	138,339	102,316
Gross Unrealized Holding Losses, Less Than 12 Months, Held-to-maturity	(1,277)	(707)
Fair Value, 12 Months or Longer, Held-to-maturity	426,784	381,449
Gross Unrealized Holding Losses, 12 Months or Longer, Held-to-maturity	(22,754)	(14,240)
Fair Value, Held-to-maturity	565,123	483,765
Gross Unrealized Holding Losses, Held-to-maturity	(24,031)	(14,947)
CMO/REMIC - Residential [Member]
Schedule of Investments [Line Items]
Fair Value, Less Than 12 Months, Available-for-sale	36,582	95,137
Gross Unrealized Holding Losses, Less Than 12 Months, Available-for-sale	(365)	(487)
Fair Value, 12 Months or Longer, Available-for-sale	135,062	71,223
Gross Unrealized Holding Losses, 12 Months or Longer, Available-for-sale	(3,160)	(1,595)
Fair Value, Available-for-sale	171,644	166,360
Gross Unrealized Holding Losses, Available-for-sale	(3,525)	(2,082)
Fair Value, Less Than 12 Months, Held-to-maturity	0	0
Gross Unrealized Holding Losses, Less Than 12 Months, Held-to-maturity	0	0
Fair Value, 12 Months or Longer, Held-to-maturity	203,254	216,431
Gross Unrealized Holding Losses, 12 Months or Longer, Held-to-maturity	(12,081)	(8,641)
Fair Value, Held-to-maturity	203,254	216,431
Gross Unrealized Holding Losses, Held-to-maturity	(12,081)	(8,641)
Government Agency/GSE [Member]
Schedule of Investments [Line Items]
Fair Value, Less Than 12 Months, Held-to-maturity	7,479	18,950
Gross Unrealized Holding Losses, Less Than 12 Months, Held-to-maturity	(15)	(27)
Fair Value, 12 Months or Longer, Held-to-maturity	54,944	43,495
Gross Unrealized Holding Losses, 12 Months or Longer, Held-to-maturity	(2,607)	(2,107)
Fair Value, Held-to-maturity	62,423	62,445
Gross Unrealized Holding Losses, Held-to-maturity	(2,622)	(2,134)
Residential Mortgage-backed Securities [Member]
Schedule of Investments [Line Items]
Fair Value, Less Than 12 Months, Available-for-sale	692,311	414,091
Gross Unrealized Holding Losses, Less Than 12 Months, Available-for-sale	(4,864)	(1,828)
Fair Value, 12 Months or Longer, Available-for-sale	593,367	303,746
Gross Unrealized Holding Losses, 12 Months or Longer, Available-for-sale	(16,082)	(6,274)
Fair Value, Available-for-sale	1,285,678	717,837
Gross Unrealized Holding Losses, Available-for-sale	(20,946)	(8,102)
Fair Value, Less Than 12 Months, Held-to-maturity	59,871	51,297
Gross Unrealized Holding Losses, Less Than 12 Months, Held-to-maturity	(484)	(188)
Fair Value, 12 Months or Longer, Held-to-maturity	90,863	55,306
Gross Unrealized Holding Losses, 12 Months or Longer, Held-to-maturity	(2,656)	(194)
Fair Value, Held-to-maturity	150,734	106,603
Gross Unrealized Holding Losses, Held-to-maturity	(3,140)	(382)
Municipal Bonds [Member]
Schedule of Investments [Line Items]
Fair Value, Less Than 12 Months, Available-for-sale	9,568	946
Gross Unrealized Holding Losses, Less Than 12 Months, Available-for-sale	(188)	(4)
Fair Value, 12 Months or Longer, Available-for-sale	14,181	13,956
Gross Unrealized Holding Losses, 12 Months or Longer, Available-for-sale	(955)	(240)
Fair Value, Available-for-sale	23,749	14,902
Gross Unrealized Holding Losses, Available-for-sale	(1,143)	(244)
Fair Value, Less Than 12 Months, Held-to-maturity	70,989	32,069
Gross Unrealized Holding Losses, Less Than 12 Months, Held-to-maturity	(778)	(492)
Fair Value, 12 Months or Longer, Held-to-maturity	77,723	66,217
Gross Unrealized Holding Losses, 12 Months or Longer, Held-to-maturity	(5,410)	(3,298)
Fair Value, Held-to-maturity	148,712	98,286
Gross Unrealized Holding Losses, Held-to-maturity	$ (6,188)	$ (3,790)

Investment Securities - Summary of Amortized Cost and Fair Value of Debt Securities by Contractual Maturity (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Due in one year or less, Amortized Cost, Held-to-maturity	$ 500
Due after one year through five years, Amortized Cost, Held-to-maturity	288,967
Due after five years through ten years, Amortized Cost, Held-to-maturity	197,061
Due after ten years, Amortized Cost, Held-to-maturity	257,912
Total Held-to-maturity, Debt Maturities, Amortized Cost Basis	744,440
Due in one year or less, Fair Value, Held-to-maturity	508
Due after one year through five years, Fair Value, Held-to-maturity	276,693
Due after five years through ten years, Fair Value, Held-to-maturity	193,389
Due after ten years, Fair Value, Held-to-maturity	250,947
Total, Held-to-maturity, Fair Value	721,537
Due in one year or less, Amortized Cost, Available-for-sale	13,907
Due after one year through five years, Amortized Cost, Available-for-sale	1,574,638
Due after five years through ten years, Amortized Cost, Available-for-sale	143,258
Due after ten years, Amortized Cost, Available-for-sale	25,863
Amortized Cost, Available-for-sale	1,757,666	$ 2,078,131
Due in one year or less, Fair Value, Available-for-sale	14,069
Due after one year through five years, Fair Value, Available-for-sale	1,554,686
Due after five years through ten years, Fair Value, Available-for-sale	140,500
Due after ten years, Fair Value, Available-for-sale	24,830
Total Available-for-sale Securities, Debt Maturities, Available-for-sale, Fair Value	$ 1,734,085	$ 2,080,985

Investment Securities - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items]
Average life of investment grade debt securities, years	3 years 10 months 24 days
Credit-related impairment loss on investment securities held-to-maturity	$ 0	$ 0
Investment securities pledged as collateral	$ 1,660,000,000	$ 1,910,000,000
Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Average life of investment grade debt securities, years	9 years 7 months 6 days
Government Agency/GSE [Member]
Debt Securities, Available-for-sale [Line Items]
Agency bond callable	$ 89,700,000
United States [Member]
Debt Securities, Available-for-sale [Line Items]
Securities issued by U.S. government percentage	89.00%
CMO/REMIC - Residential [Member]
Debt Securities, Available-for-sale [Line Items]
Investment contractual cash flows guaranteed by Government, percentage	100.00%
Municipal Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Total investment portfolio representing municipal bonds, percentage	11.00%

Acquired SJB Assets and FDIC Loss Sharing Asset - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2018 USD ($)
Business Combinations [Abstract]
Acquisition date	Oct. 16, 2009
Remaining discount associated with SJB loans	$ 0.0
Claims submitted for net losses on PCI loans	$ 118.9

Acquired SJB Assets and FDIC Loss Sharing Asset - Summary of PCI Loans and Lease Finance Receivables (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Real estate:
Less: Purchase accounting discount	$ 0
Gross PCI loans, net of discount	17,214	$ 28,882
Less: Allowance for PCI loan losses	(204)	(367)
PCI Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and industrial	519	934
SBA	1,258	1,383
Real estate:
Commercial real estate	14,407	27,431
Construction	0	0
SFR mortgage	145	162
Dairy & livestock and agribusiness	700	770
Municipal lease finance receivables	0	0
Consumer and other loans	185	228
Gross PCI loans	17,214	30,908
Less: Purchase accounting discount	0	(2,026)
Gross PCI loans, net of discount	17,214	28,882
Less: Allowance for PCI loan losses	(204)	(367)
Net loans	$ 17,010	$ 28,515

Acquired SJB Assets and FDIC Loss Sharing Asset - Summary of Gross PCI Loans by Internal Risk Ratings by Loans (Detail) - PCI Loans [Member] - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross PCI loans	$ 17,214	$ 30,908
Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross PCI loans	15,816	26,439
Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross PCI loans	1,174	1,088
Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross PCI loans	224	3,381
Doubtful & Loss [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross PCI loans	$ 0	$ 0

Acquired SJB Assets and FDIC Loss Sharing Asset - Summary of Activity Related to FDIC Loss Sharing Liability (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
FDIC Indemnification Asset [Roll Forward]
Balance, beginning of period	$ (107)	$ (502)
FDIC share of recoveries, net of charge-offs	0	0
Cash paid to FDIC, net	64	519
Other	43	(124)
Balance, end of period	$ 0	$ (107)

Loans and Lease Finance Receivables and Allowance for Loan Losses - Additional Information (Detail)	3 Months Ended	12 Months Ended
	Sep. 30, 2018 USD ($)	Dec. 31, 2018 USD ($) Contract SecurityLoan	Dec. 31, 2017 USD ($) Contract	Dec. 31, 2016 USD ($)	Dec. 31, 2015 Contract
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total fixed rate loans held		$ 3,770,000,000
Secure borrowings and available lines of credit from FHLB and Federal Reserve Bank		5,710,000,000	$ 3,680,000,000
Loans held-for-sale		0	0
Impaired, at carrying value		23,545,000	15,525,000	$ 26,385,000
Loans classified as troubled debt restructured		7,100,000
Impaired, at carrying value		$ 561,000	75,000	141,000
Number of performing loans \| SecurityLoan		13
Provision for unfunded loan commitments		$ 250,000	400,000	450,000
Reserve for credit risk for undisbursed commitments		9,000,000	6,300,000
Allocation of allowance to troubled debt restructuring		$ 490,000,000	1,000,000
Number of loans modified as a TDR within the previous 12 months that subsequently defaulted \| Contract		0			0
Increase in reserve for unfunded loan commitments		$ 250,000	400,000	$ 450,000
Community Bank [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired, at carrying value	$ 12,300,000	$ 0
Provision for unfunded loan commitments	2,900,000
Increase in reserve for unfunded loan commitments	2,900,000
Commercial Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of total gross loan portfolio (excluding PCI loans)		74.99%
Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of total gross loan portfolio (excluding PCI loans)		69.58%
Nonaccrual Small Business Administration Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance		$ 2,900,000
Dairy & Livestock and Agribusiness [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance		78,000
Impaired Loans Modified in Troubled Debt Restructure [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired, at carrying value		7,100,000
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial real estate loan outstanding balance modified as a TDR within the previous 12 months that subsequently defaulted			$ 3,100,000
Nonaccrual Single Family Mortgage Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance		2,900,000
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loans modified as a TDR within the previous 12 months that subsequently defaulted \| Contract			1
Consumer and Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance		486,000
Nonperforming Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired, at carrying value		3,500,000
Loans classified as troubled debt restructured		3,500,000
Performing Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired, at carrying value	$ 23,500,000
Loans classified as troubled debt restructured		3,600,000
Performing Financing Receivable [Member] \| Commercial Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans classified as troubled debt restructured		473,000
Performing Financing Receivable [Member] \| Impaired Loans Modified in Troubled Debt Restructure [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans classified as troubled debt restructured		$ 3,600,000
Performing Financing Receivable [Member] \| Single-family Residential Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loans \| SecurityLoan		9
Performing Financing Receivable [Member] \| Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans classified as troubled debt restructured		$ 135,000
Number of loans \| SecurityLoan		2
Performing Financing Receivable [Member] \| Small Business Administration [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loans \| SecurityLoan		1
Performing Financing Receivable [Member] \| Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loans \| SecurityLoan		1
Allowance Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans classified as troubled debt restructured		$ 561,000
Loans, Excluding PCI Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial real estate loans		5,394,229,000	$ 3,376,713,000
Dairy & livestock and agribusiness		393,843,000	347,289,000
Outstanding balance		19,951,000	10,716,000
Impaired, at carrying value			15,500,000
Loans, Excluding PCI Loans [Member] \| Dairy & Livestock Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Dairy & livestock and agribusiness		340,500,000	310,600,000
Loans, Excluding PCI Loans [Member] \| Agribusiness Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Dairy & livestock and agribusiness		53,300,000	36,700,000
Loans, Excluding PCI Loans [Member] \| Nonaccrual Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance		7,500,000
Loans, Excluding PCI Loans [Member] \| Dairy & Livestock and Agribusiness [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance		78,000	829,000
Loans, Excluding PCI Loans [Member] \| Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance		7,490,000	250,000
Loans, Excluding PCI Loans [Member] \| Small Business Administration [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance		2,892,000	$ 906,000
Loans classified as troubled debt restructured		575,000
Loans, Excluding PCI Loans [Member] \| Nonaccrual Commercial Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance		6,100,000
Loans, Excluding PCI Loans [Member] \| Nonaccrual Single Family Mortgage Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans classified as troubled debt restructured		$ 2,400,000
Loans, Excluding PCI Loans [Member] \| Loans Secured by Farmland [Member] \| Commercial Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of total gross loan portfolio (excluding PCI loans)		4.26%	6.10%
Commercial real estate loans		$ 229,800,000	$ 206,100,000
Loans, Excluding PCI Loans [Member] \| Loans Secured by Farmland [Member] \| Loans Secured by Dairy & Livestock Land [Member] \| Commercial Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial real estate loans		102,900,000	118,200,000
Loans, Excluding PCI Loans [Member] \| Loans Secured by Farmland [Member] \| Loans Secured by Agricultural Land [Member] \| Commercial Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial real estate loans		$ 126,900,000	$ 87,900,000

Loans and Lease Finance Receivables and Allowance for Loan Losses - Summary of Components of Loans and Lease Finance Receivables, Excluding PCI Loans (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans, excluding PCI loans, net of deferred loan fees	$ 7,764,611	$ 4,830,631
Less: Allowance for loan losses	(63,613)	(59,585)	$ (61,540)	$ (59,156)
Total loans and lease finance receivables	7,700,998	4,771,046
PCI Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and industrial	519	934
PCI Loans	17,214	30,908
SBA	1,258	1,383
Discount on PCI loans	0	(2,026)
Commercial real estate	14,407	27,431
Construction	0	0
SFR mortgage	145	162
Dairy & livestock and agribusiness	700	770
Municipal lease finance receivables	0	0
Consumer and other loans	185	228
Less: Allowance for loan losses	(204)	(367)	$ (1,219)	$ 0
Net loans	17,010	28,515
Loans, Excluding PCI Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and industrial	1,002,209	513,325
SBA	350,043	122,055
Commercial real estate	5,394,229	3,376,713
Construction	122,782	77,982
SFR mortgage	296,504	236,202
Dairy & livestock and agribusiness	393,843	347,289
Municipal lease finance receivables	64,186	70,243
Consumer and other loans	128,429	64,229
Total gross loans, excluding PCI loans	7,752,225	4,808,038
Less: Deferred loan fees, net	(4,828)	(6,289)
Gross loans, excluding PCI loans, net of deferred loan fees	7,747,397	4,801,749
Less: Allowance for loan losses	(63,409)	(59,218)
Net loans	$ 7,683,988	$ 4,742,531

Loans and Lease Finance Receivables and Allowance for Loan Losses - Summary of Loan, Excluding PCI Loans by Internal Risk Ratings (Parenthetical) (Detail) $ in Millions	3 Months Ended
	Sep. 30, 2018 USD ($)
Receivables [Abstract]
Payments to Acquire Loans Receivable	$ 19.0

Loans and Lease Finance Receivables and Allowance for Loan Losses - Summary of Loan, Excluding PCI Loans by Internal Risk Ratings (Detail) - Loans, Excluding PCI Loans [Member] - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and industrial	$ 1,002,209	$ 513,325
SBA	350,043	122,055
Commercial real estate, Owner occupied	2,117,990	1,096,280
Commercial real estate, Non-owner occupied	3,276,239	2,280,433
Construction, Speculative	118,233	60,042
Construction, Non-speculative	4,549	17,940
SFR mortgage	296,504	236,202
Dairy & livestock and agribusiness	393,843	347,289
Municipal lease finance receivables	64,186	70,243
Consumer and other loans	128,429	64,229
Total gross loans, excluding PCI loans	7,752,225	4,808,038
Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and industrial	961,909	483,641
SBA	336,033	112,835
Commercial real estate, Owner occupied	2,008,169	1,009,199
Commercial real estate, Non-owner occupied	3,260,822	2,257,130
Construction, Speculative	118,233	60,042
Construction, Non-speculative	4,549	17,940
SFR mortgage	289,607	229,032
Dairy & livestock and agribusiness	350,044	321,413
Municipal lease finance receivables	63,650	69,644
Consumer and other loans	126,085	61,715
Total gross loans, excluding PCI loans	7,519,101	4,622,591
Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and industrial	29,358	19,566
SBA	7,375	5,358
Commercial real estate, Owner occupied	95,841	76,111
Commercial real estate, Non-owner occupied	9,938	16,434
Construction, Speculative	0	0
Construction, Non-speculative	0	0
SFR mortgage	3,310	3,124
Dairy & livestock and agribusiness	34,586	9,047
Municipal lease finance receivables	536	599
Consumer and other loans	1,263	1,255
Total gross loans, excluding PCI loans	182,207	131,494
Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and industrial	10,942	10,118
SBA	6,635	3,862
Commercial real estate, Owner occupied	13,980	10,970
Commercial real estate, Non-owner occupied	5,479	6,869
Construction, Speculative	0	0
Construction, Non-speculative	0	0
SFR mortgage	3,587	4,046
Dairy & livestock and agribusiness	9,213	16,829
Municipal lease finance receivables	0	0
Consumer and other loans	1,081	1,259
Total gross loans, excluding PCI loans	50,917	53,953
Doubtful & Loss [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial and industrial	0	0
SBA	0	0
Commercial real estate, Owner occupied	0	0
Commercial real estate, Non-owner occupied	0	0
Construction, Speculative	0	0
Construction, Non-speculative	0	0
SFR mortgage	0	0
Dairy & livestock and agribusiness	0	0
Municipal lease finance receivables	0	0
Consumer and other loans	0	0
Total gross loans, excluding PCI loans	$ 0	$ 0

Loans and Lease Finance Receivables and Allowance for Loan Losses - Schedule of Balance and Activity Related to Allowance for Loan Losses for Held-for-Investment Loans by Type (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	$ 59,585	$ 61,540	$ 59,156
Charge-offs	(291)	(151)	(238)
Recoveries	2,819	6,696	9,022
(Recapture of) provision for loan losses	1,500	(8,500)	(6,400)
Ending Balance	63,613	59,585	61,540
PCI Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	367	1,219	0
Charge-offs	0	0	0
Recoveries	0	0	0
(Recapture of) provision for loan losses	(163)	(852)	1,219
Ending Balance	204	367	1,219
Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	7,280	8,154	8,588
Charge-offs	(10)	(138)	(120)
Recoveries	82	118	630
(Recapture of) provision for loan losses	168	(854)	(944)
Ending Balance	7,520	7,280	8,154
Small Business Administration [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	869	871	993
Charge-offs	(257)	0	0
Recoveries	20	78	40
(Recapture of) provision for loan losses	430	(80)	(162)
Ending Balance	1,062	869	871
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	41,722	37,443	36,995
Charge-offs	0	0	0
Recoveries	0	154	792
(Recapture of) provision for loan losses	3,212	4,125	(344)
Ending Balance	44,934	41,722	37,443
Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	984	1,096	2,389
Charge-offs	0	0	0
Recoveries	2,506	6,036	7,174
(Recapture of) provision for loan losses	(2,509)	(6,148)	(8,467)
Ending Balance	981	984	1,096
SFR Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	2,112	2,287	2,103
Charge-offs	(13)	0	(102)
Recoveries	51	212	0
(Recapture of) provision for loan losses	46	(387)	286
Ending Balance	2,196	2,112	2,287
Dairy & Livestock and Agribusiness [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	4,647	8,541	6,029
Charge-offs	0	0	0
Recoveries	19	19	216
(Recapture of) provision for loan losses	549	(3,913)	2,296
Ending Balance	5,215	4,647	8,541
Municipal Lease Finance Receivables [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	851	941	1,153
Charge-offs	0	0	0
Recoveries	0	0	0
(Recapture of) provision for loan losses	(76)	(90)	(212)
Ending Balance	775	851	941
Consumer and Other Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	753	988	906
Charge-offs	(11)	(13)	(16)
Recoveries	141	79	170
(Recapture of) provision for loan losses	(157)	(301)	(72)
Ending Balance	$ 726	$ 753	$ 988

Loans and Lease Finance Receivables and Allowance for Loan Losses - Schedule of Recorded Investment in Loans Held-for-Investment and Related Allowance for Loan Losses by Loan Type (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment in Loans, Individually Evaluated for Impairment	$ 23,545	$ 15,525
Recorded Investment in Loans, Collectively Evaluated for Impairment	7,728,680	4,792,513
Recorded Investment in Loans, Acquired with Deterioriated Credit Quality	17,214	28,882
Allowance for Loan Losses, Individually Evaluated for Impairment	561	75
Allowance for Loan Losses, Collectively Evaluated for Impairment	62,848	59,143
Allowance for Loan Losses, Acquired with Deterioriated Credit Quality	204	367
PCI Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment in Loans, Individually Evaluated for Impairment	0	0
Recorded Investment in Loans, Collectively Evaluated for Impairment	0	0
Recorded Investment in Loans, Acquired with Deterioriated Credit Quality	17,214	28,882
Allowance for Loan Losses, Individually Evaluated for Impairment	0	0
Allowance for Loan Losses, Collectively Evaluated for Impairment	0	0
Allowance for Loan Losses, Acquired with Deterioriated Credit Quality	204	367
Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment in Loans, Individually Evaluated for Impairment	7,625	440
Recorded Investment in Loans, Collectively Evaluated for Impairment	994,584	512,885
Recorded Investment in Loans, Acquired with Deterioriated Credit Quality	0	0
Allowance for Loan Losses, Individually Evaluated for Impairment	3	0
Allowance for Loan Losses, Collectively Evaluated for Impairment	7,517	7,280
Allowance for Loan Losses, Acquired with Deterioriated Credit Quality	0	0
Small Business Administration [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment in Loans, Individually Evaluated for Impairment	3,467	1,531
Recorded Investment in Loans, Collectively Evaluated for Impairment	346,576	120,524
Recorded Investment in Loans, Acquired with Deterioriated Credit Quality	0	0
Allowance for Loan Losses, Individually Evaluated for Impairment	0	1
Allowance for Loan Losses, Collectively Evaluated for Impairment	1,062	868
Allowance for Loan Losses, Acquired with Deterioriated Credit Quality	0	0
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment in Loans, Individually Evaluated for Impairment	6,540	8,133
Recorded Investment in Loans, Collectively Evaluated for Impairment	5,387,689	3,368,580
Recorded Investment in Loans, Acquired with Deterioriated Credit Quality	0	0
Allowance for Loan Losses, Individually Evaluated for Impairment	478	0
Allowance for Loan Losses, Collectively Evaluated for Impairment	44,456	41,722
Allowance for Loan Losses, Acquired with Deterioriated Credit Quality	0	0
Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment in Loans, Individually Evaluated for Impairment	0	0
Recorded Investment in Loans, Collectively Evaluated for Impairment	122,782	77,982
Recorded Investment in Loans, Acquired with Deterioriated Credit Quality	0	0
Allowance for Loan Losses, Individually Evaluated for Impairment	0	0
Allowance for Loan Losses, Collectively Evaluated for Impairment	981	984
Allowance for Loan Losses, Acquired with Deterioriated Credit Quality	0	0
SFR Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment in Loans, Individually Evaluated for Impairment	5,349	4,040
Recorded Investment in Loans, Collectively Evaluated for Impairment	291,155	232,162
Recorded Investment in Loans, Acquired with Deterioriated Credit Quality	0	0
Allowance for Loan Losses, Individually Evaluated for Impairment	0	0
Allowance for Loan Losses, Collectively Evaluated for Impairment	2,196	2,112
Allowance for Loan Losses, Acquired with Deterioriated Credit Quality	0	0
Dairy & Livestock and Agribusiness [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment in Loans, Individually Evaluated for Impairment	78	829
Recorded Investment in Loans, Collectively Evaluated for Impairment	393,765	346,460
Recorded Investment in Loans, Acquired with Deterioriated Credit Quality	0	0
Allowance for Loan Losses, Individually Evaluated for Impairment	12	0
Allowance for Loan Losses, Collectively Evaluated for Impairment	5,203	4,647
Allowance for Loan Losses, Acquired with Deterioriated Credit Quality	0	0
Municipal Lease Finance Receivables [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment in Loans, Individually Evaluated for Impairment	0	0
Recorded Investment in Loans, Collectively Evaluated for Impairment	64,186	70,243
Recorded Investment in Loans, Acquired with Deterioriated Credit Quality	0	0
Allowance for Loan Losses, Individually Evaluated for Impairment	0	0
Allowance for Loan Losses, Collectively Evaluated for Impairment	775	851
Allowance for Loan Losses, Acquired with Deterioriated Credit Quality	0	0
Consumer and Other Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment in Loans, Individually Evaluated for Impairment	486	552
Recorded Investment in Loans, Collectively Evaluated for Impairment	127,943	63,677
Recorded Investment in Loans, Acquired with Deterioriated Credit Quality	0	0
Allowance for Loan Losses, Individually Evaluated for Impairment	68	74
Allowance for Loan Losses, Collectively Evaluated for Impairment	658	679
Allowance for Loan Losses, Acquired with Deterioriated Credit Quality	$ 0	$ 0

Loans and Lease Finance Receivables and Allowance for Loan Losses - Schedule of Recorded Investment in, and Aging of, Past Due and Nonaccrual Loans, Excluding PCI Loans by Class of Loans (Parenthetical) (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Sep. 30, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing loans, current	$ 2,300		$ 3,600
Community Bank [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans		$ 12,300
30-59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	33
60-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	57		376
90+ Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	$ 17,600		$ 6,800

Loans and Lease Finance Receivables and Allowance for Loan Losses - Schedule of Held-for-Investment Loans, Excluding PCI Loans, Individually Evaluated for Impairment by Class of Loans (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment, With no related allowance recorded	$ 20,067	$ 15,146	$ 26,018
Recorded Investment, With a related allowance recorded	3,478	379	367
Recorded Investment, Total impaired loans	23,545	15,525	26,385
Unpaid Principal Balance, With no related allowance recorded	29,028	18,702	32,198
Unpaid Principal Balance, With a related allowance recorded	3,513	409	383
Unpaid Principal Balance, Total impaired loans	32,541	19,111	32,581
Related Allowance, With no related allowance recorded	0	0	0
Related Allowance, With a related allowance recorded	561	75	141
Related Allowance, Total impaired loans	561	75	141
Average Recorded Investment, With no related allowance recorded	22,789	15,820	26,406
Average Recorded Investment, With a related allowance recorded	3,501	391	439
Average Recorded Investment, Total impaired loans	26,290	16,211	26,845
Interest Income Recognized, With no related allowance recorded	163	306	938
Interest Income Recognized, With a related allowance recorded	0	0	23
Interest Income Recognized, Total impaired loans	163	306	961
Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment, With no related allowance recorded	7,436	440	730
Recorded Investment, With a related allowance recorded	189	0	171
Unpaid Principal Balance, With no related allowance recorded	11,457	980	1,646
Unpaid Principal Balance, With a related allowance recorded	191	0	171
Related Allowance, With no related allowance recorded	0	0	0
Related Allowance, With a related allowance recorded	3	0	114
Average Recorded Investment, With no related allowance recorded	7,718	548	832
Average Recorded Investment, With a related allowance recorded	203	0	233
Interest Income Recognized, With no related allowance recorded	7	10	26
Interest Income Recognized, With a related allowance recorded	0	0	9
Small Business Administration [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment, With no related allowance recorded	3,467	1,530	3,386
Recorded Investment, With a related allowance recorded		1	196
Unpaid Principal Balance, With no related allowance recorded	5,746	1,699	4,189
Unpaid Principal Balance, With a related allowance recorded	0	18	212
Related Allowance, With no related allowance recorded	0	0	0
Related Allowance, With a related allowance recorded	0	1	27
Average Recorded Investment, With no related allowance recorded	3,919	1,598	3,709
Average Recorded Investment, With a related allowance recorded	0	6	206
Interest Income Recognized, With no related allowance recorded	44	47	50
Interest Income Recognized, With a related allowance recorded	0	0	14
Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment, With no related allowance recorded	589	4,365	1,797
Recorded Investment, With a related allowance recorded	0	0	0
Unpaid Principal Balance, With no related allowance recorded	705	4,763	2,276
Unpaid Principal Balance, With a related allowance recorded	0	0	0
Related Allowance, With no related allowance recorded	0	0	0
Related Allowance, With a related allowance recorded	0	0	0
Average Recorded Investment, With no related allowance recorded	624	4,414	1,410
Average Recorded Investment, With a related allowance recorded	0	0	0
Interest Income Recognized, With no related allowance recorded	0	36	70
Interest Income Recognized, With a related allowance recorded	0	0	0
Commercial Real Estate Non-owner Occupied [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment, With no related allowance recorded	2,808	3,768	13,331
Recorded Investment, With a related allowance recorded	3,143	0	0
Unpaid Principal Balance, With no related allowance recorded	4,324	5,107	15,842
Unpaid Principal Balance, With a related allowance recorded	3,144	0	0
Related Allowance, With no related allowance recorded	0	0	0
Related Allowance, With a related allowance recorded	478	0	0
Average Recorded Investment, With no related allowance recorded	4,585	3,951	13,517
Average Recorded Investment, With a related allowance recorded	3,144	0	0
Interest Income Recognized, With no related allowance recorded	32	94	592
Interest Income Recognized, With a related allowance recorded	0	0	0
Construction Speculative [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment, With no related allowance recorded	0	0	0
Recorded Investment, With a related allowance recorded	0	0	0
Unpaid Principal Balance, With no related allowance recorded	0	0	0
Unpaid Principal Balance, With a related allowance recorded	0	0	0
Related Allowance, With no related allowance recorded	0	0	0
Related Allowance, With a related allowance recorded	0	0	0
Average Recorded Investment, With no related allowance recorded	0	0	0
Average Recorded Investment, With a related allowance recorded	0	0	0
Interest Income Recognized, With no related allowance recorded	0	0	0
Interest Income Recognized, With a related allowance recorded	0	0	0
Construction Non-speculative [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment, With no related allowance recorded	0	0	0
Recorded Investment, With a related allowance recorded	0	0	0
Unpaid Principal Balance, With no related allowance recorded	0	0	0
Unpaid Principal Balance, With a related allowance recorded	0	0	0
Related Allowance, With no related allowance recorded	0	0	0
Related Allowance, With a related allowance recorded	0	0	0
Average Recorded Investment, With no related allowance recorded	0	0	0
Average Recorded Investment, With a related allowance recorded	0	0	0
Interest Income Recognized, With no related allowance recorded	0	0	0
Interest Income Recognized, With a related allowance recorded	0	0	0
SFR Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment, With no related allowance recorded	5,349	4,040	5,174
Recorded Investment, With a related allowance recorded	0	0	0
Unpaid Principal Balance, With no related allowance recorded	6,270	4,692	6,075
Unpaid Principal Balance, With a related allowance recorded	0	0	0
Related Allowance, With no related allowance recorded	0	0	0
Related Allowance, With a related allowance recorded	0	0	0
Average Recorded Investment, With no related allowance recorded	5,484	4,119	5,327
Average Recorded Investment, With a related allowance recorded	0	0	0
Interest Income Recognized, With no related allowance recorded	80	118	135
Interest Income Recognized, With a related allowance recorded	0	0	0
Dairy & Livestock and Agribusiness [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment, With no related allowance recorded	0	829	747
Recorded Investment, With a related allowance recorded	78	0	0
Unpaid Principal Balance, With no related allowance recorded	0	1,091	747
Unpaid Principal Balance, With a related allowance recorded	78	0	0
Related Allowance, With no related allowance recorded	0	0	0
Related Allowance, With a related allowance recorded	12	0	0
Average Recorded Investment, With no related allowance recorded	0	988	692
Average Recorded Investment, With a related allowance recorded	78	0	0
Interest Income Recognized, With no related allowance recorded	0	1	47
Interest Income Recognized, With a related allowance recorded	0	0	0
Municipal Lease Finance Receivables [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment, With no related allowance recorded	0	0	0
Recorded Investment, With a related allowance recorded	0	0	0
Unpaid Principal Balance, With no related allowance recorded	0	0	0
Unpaid Principal Balance, With a related allowance recorded	0	0	0
Related Allowance, With no related allowance recorded	0	0	0
Related Allowance, With a related allowance recorded	0	0	0
Average Recorded Investment, With no related allowance recorded	0	0	0
Average Recorded Investment, With a related allowance recorded	0	0	0
Interest Income Recognized, With no related allowance recorded	0	0	0
Interest Income Recognized, With a related allowance recorded	0	0	0
Consumer and Other Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment, With no related allowance recorded	418	174	853
Recorded Investment, With a related allowance recorded	68	378	0
Unpaid Principal Balance, With no related allowance recorded	526	370	1,423
Unpaid Principal Balance, With a related allowance recorded	100	391	0
Related Allowance, With no related allowance recorded	0	0	0
Related Allowance, With a related allowance recorded	68	74	0
Average Recorded Investment, With no related allowance recorded	459	202	919
Average Recorded Investment, With a related allowance recorded	76	385	0
Interest Income Recognized, With no related allowance recorded	0	0	18
Interest Income Recognized, With a related allowance recorded	$ 0	$ 0	$ 0

Loans and Lease Finance Receivables and Allowance for Loan Losses - Summary of Activity Related to Troubled Debt Restructurings (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Modifications [Line Items]
Total TDRs	$ 7,103	$ 9,009
Performing TDRs [Member]
Financing Receivable, Modifications [Line Items]
Beginning balance	4,809	19,233
New modifications	311	3,143
Payoffs/payments, net and other	(1,526)	(14,752)
TDRs returned to accrual status	0	329
TDRs placed on nonaccrual status	0	(3,144)
Ending balance	3,594	4,809
Nonperforming TDRs [Member]
Financing Receivable, Modifications [Line Items]
Beginning balance	4,200	1,626
New modifications	316	2,066
Charge-offs	0	0
Payoffs/payments, net and other	(1,007)	(2,307)
TDRs returned to accrual status	0	(329)
TDRs placed on nonaccrual status	0	3,144
Ending balance	$ 3,509	$ 4,200

Other Real Estate Owned - Summary of Activity Related to Total OREO (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Abstract]
Balance, beginning of period	$ 4,527	$ 4,527
Additions	420	0
Dispositions	(4,527)	0
Valuation adjustments	0	0
Balance, end of period	$ 420	$ 4,527

Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Balance, beginning of period	$ 116,564	$ 89,533
Addition due to acqusitions	549,975	27,031
Balance, end of period	$ 666,539	$ 116,564

Goodwill and Other Intangible Assets - Summary of Amortizable Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Balance of intangible assets, Gross CDI Carrying Amount, Beginning of period	$ 41,097	$ 37,940
Additions due to acquisitions	52,200	3,157
Balance of intangible assets, Gross CDI Carrying Amount, End of period	93,297	41,097	$ 37,940
Aggregate amortization expense, Gross CDI Carrying Amount	5,254	1,329	1,106
Estimated Amortization Expense:
Estimated Amortization Expense, 2019	10,798
Estimated Amortization Expense, 2020	9,352
Estimated Amortization Expense, 2021	8,240
Estimated Amortization Expense, 2022	7,126
Estimated Amortization Expense, Thereafter	18,268
Balance of intangible assets, Accumulated Amortization, Beginning of period	(34,259)	(32,930)
Balance of intangible assets, Accumulated Amortization, End of period	(39,513)	(34,259)	(32,930)
Balance of intangible assets, Net CDI Amount, Beginning of period	6,838	5,010
Balance of intangible assets, Net CDI Amount, End of period	$ 53,784	$ 6,838	$ 5,010

Goodwill and Other Intangible Assets - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Approximately weighted average remaining life of intangible assets	3 years 2 months 16 days

Premises and Equipment - Schedule of Premises and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
Land	$ 19,929	$ 14,489
Bank premises	73,188	65,215
Furniture and equipment	29,020	25,610
Premises and equipment, gross	122,137	105,314
Accumulated depreciation and amortization	(63,944)	(59,148)
Premises and equipment, net	$ 58,193	$ 46,166

Premises and Equipment - Future Minimum Annual Rental Payments for Noncancelable Leases (Detail) $ in Thousands	Dec. 31, 2018 USD ($)
Leases [Abstract]
2019	$ 9,261
2020	5,918
2021	4,077
2022	2,819
2023	1,179
Thereafter	1,707
Total	$ 24,961

Premises and Equipment - Additional Information (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Impairment loss				$ 2,600,000
Fair value, net of selling costs, of held-for-sale asset				3,400,000
Gain on eminent domain condemnation		$ 0	$ 2,894,000
Gain on sale of property plant equipment	$ 542,000
Premises and equipment, net		58,193,000	46,166,000
Rental expense		$ 7,700,000	5,900,000	$ 5,600,000
Building [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, net			$ 450,000

Other Assets - Summary of Other Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepaid expenses	$ 6,393	$ 4,538
Interest rate swaps	1,938	3,211
Affordable housing investments	33,031	801
Other investments	15,995	5,977
Other assets	10,450	10,790
Total	$ 67,807	$ 25,317

Income Taxes - Schedule of Income Tax Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current provision:
Federal	$ 31,055	$ 44,153	$ 41,195
State	20,546	17,151	17,944
Current provision, total	51,601	61,304	59,139
Deferred provision/(benefit):
Federal	5,158	20,926	1,208
State	2,353	2,154	510
Deferred provision (benefit), total	7,511	23,080	1,718
Provision for income taxes	$ 59,112	$ 84,384	$ 60,857

Income Taxes - Schedule of Income Tax Asset (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current:
Income tax asset , Current, Total	$ 19,103	$ 14,659
Deferred:
Income tax asset , Deferred, Total	43,071	25,387
Income tax asset (liability), Total	62,174	40,046
Federal [Member]
Current:
Income tax asset , Current, Total	12,303	11,713
Deferred:
Income tax asset , Deferred, Total	27,334	16,557
State [Member]
Current:
Income tax asset , Current, Total	6,800	2,946
Deferred:
Income tax asset , Deferred, Total	$ 15,737	$ 8,830

Income Taxes - Components of Net Deferred Tax Asset (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred tax assets:
Bad debt and credit loss deduction	$ 22,402	$ 19,911
Net operating loss carryforward	141	207
Deferred compensation	6,109	5,501
PCI loans	2,556	3,098
California franchise tax	837	1,618
Accrued expense	4,865	1,365
Unrealized loss on investment securities, net	7,508	0
Acquired loan discounts	25,555	2,081
Other, net	2,624	1,272
Gross deferred tax asset	72,597	35,053
Deferred tax liabilities:
Depreciation	4,440	975
Intangibles—acquistions	19,843	3,404
FHLB stock	2,527	2,400
Deferred income	2,716	2,112
Unrealized gain on investment securities, net	0	775
Gross deferred tax liability	29,526	9,666
Net deferred tax asset	$ 43,071	$ 25,387

Income Taxes - Reconciliation of Statutory Income Tax Rate to Consolidated Effective Income Tax Rate (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Federal income tax at statutory rate, rate	21.00%	35.00%	35.00%
State franchise taxes, net of federal benefit, rate	8.50%	6.90%	7.00%
Tax-exempt income, rate	(1.40%)	(2.40%)	(3.60%)
Tax credits, rate	(0.70%)	(0.60%)	(0.50%)
Deferred tax asset revalution adjustment, rate	0.00%	7.00%	0.00%
Other, net, rate	0.60%	(1.20%)	(0.40%)
Provision for income taxes, rate	28.00%	44.70%	37.50%
Federal income tax at statutory rate	$ 44,334	$ 66,078	$ 56,800
State franchise taxes, net of federal benefit	17,905	12,903	11,299
Tax-exempt income	(2,991)	(4,450)	(5,848)
Tax credits	(1,451)	(1,096)	(846)
Deferred tax asset revalution adjustment	0	13,208	0
Other, net	1,315	(2,259)	(548)
Provision for income taxes	$ 59,112	$ 84,384	$ 60,857

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Amount of unrecognized tax benefits	$ 0	$ 0	$ 1,675
Deferred tax asset revaluation adjustment	$ 0	$ 13,208	$ 0
Effective Income Tax Rate	21.00%	35.00%	35.00%

Deposits - Composition of Deposits (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Noninterest-bearing Deposit Liabilities [Abstract]
Noninterest-bearing deposits	$ 5,204,787	$ 3,846,436
Interest-bearing deposits:
Investment checking	460,972	433,971
Money market	2,236,018	1,517,050
Savings	393,769	364,049
Time deposits	531,944	385,347
Total deposits	$ 8,827,490	$ 6,546,853
Noninterest-bearing deposits, percentage of total deposits	58.96%	58.75%
Investment checking, percentage of total deposits	5.22%	6.63%
Money market, percentage of total deposits	25.33%	23.17%
Savings, percentage of total deposits	4.46%	5.56%
Time deposits, percentage of total deposits	6.03%	5.89%
Percentage of deposit, total	100.00%	100.00%

Deposits - Additional Information (Detail) - USD ($)	12 Months Ended
Deposits - Additional Information (Detail) - USD ($)	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Deposits [Abstract]
Balance of accounts with more than $0,000 balance	$ 125,400,000	$ 108,500,000
Interest expenses on accounts with more than $0,000 balance	$ 1,100,000	$ 545,000	$ 444,000

Deposits - Scheduled Maturities of Time Certificates of Deposit (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Year of maturity:
2019	$ 398,735
2020	70,898
2021	46,710
2022	5,320
2023 and thereafter	10,281
Total	$ 531,944	$ 385,347

Borrowings - Additional Information (Detail) - USD ($)		1 Months Ended	12 Months Ended
Borrowings - Additional Information (Detail) - USD ($)	Jan. 31, 2006	Jan. 31, 2006	Dec. 31, 2018	Dec. 31, 2006	Dec. 31, 2017
Debt Instrument [Line Items]
Funds borrowed under repurchase agreement			$ 442,255,000		$ 553,773,000
Weighted average interest rates			0.39%		0.30%
Loans at carrying value			$ 5,710,000,000		$ 3,680,000,000
Investment securities at carrying value			1,660,000,000		$ 1,910,000,000
Overnight borrowings			$ 280,000,000
Overnight borrowings with cost basis points			2.53%
Period of LIBOR		1 year
Collateral Pledged [Member]
Debt Instrument [Line Items]
Investment securities at carrying value			$ 1,660,000,000
CVB Statutory Trust III [Member] \| Junior Subordinated Debenture Held by CVB Statutory Trust III [Member]
Debt Instrument [Line Items]
Trust preferred securities, offered fair value	$ 25,000,000	$ 25,000,000
Proceeds from the offering and other cash	$ 25,774,000
Maximum Period of Deferred payments of interest			20 consecutive quarters.
Trust Preferred Securities, maturity date			Mar. 15, 2036
Trust Preferred Securities, interest rate in excess of LIBOR				1.38%
Trust Preferred Securities callable date			Mar. 15, 2011

Commitments and Contingencies - Additional Information (Detail) - USD ($)	Nov. 07, 2018	Sep. 09, 2015	Dec. 31, 2018	Dec. 31, 2017
Contingencies And Commitments [Line Items]
Commitments to extend credit			$ 1,690,000,000	$ 924,500,000
Obligations under letters of credit			54,300,000	37,600,000
Reserve for credit risk for undisbursed commitments			9,000,000	$ 6,300,000
Available lines of credit			3,960,000,000
Loss contigency damages sought value		$ 2,000,000
amount awarded to the plaintiff	$ 1,340,000
insurance policy that covers the amount awarded to the plaintiff	5,000,000
loss contingency, amount deductible	$ 100,000
Secured [Member]
Contingencies And Commitments [Line Items]
Available lines of credit			$ 3,590,000,000

Employee Benefit Plans - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Severance costs	$ 1,400,000	$ 1,600,000	$ 610,000
Deferred compensation agreements expenses	$ 1,100,000	1,200,000	684,000
Maximum percentage of bonus defer by individual under deferred compensation plan	100.00%
Deferred compensation plan, discretionary payments	$ 0	0	0
Deferred compensation liability	$ 20,033,000	18,223,000
Employer contribution percentage to 401(k) plan	3.00%
Employer contribution in profit-sharing plan	$ 3,500,000	3,200,000	$ 2,800,000
Executive Non-qualified Excess Plan [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Deferred compensation liability	$ 2,400,000	$ 2,100,000
Maximum [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Maximum percentage of salary defer by individual under deferred compensation plan	75.00%

Earnings Per Share Reconciliation - Additional Information (Detail) - shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Earnings Per Share [Abstract]
Antidilutive securities excluded from computation of earnings per common share	160,000	9,000	291,000

Earnings Per Share Reconciliation - Schedule of Earnings Per Common Share Reconciliation (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Earnings per common share:
Net earnings	$ 43,159	$ 38,558	$ 35,373	$ 34,913	$ 17,851	$ 29,683	$ 28,373	$ 28,504	$ 152,003	$ 104,411	$ 101,429
Less: Net earnings allocated to restricted stock									429	382	421
Net earnings allocated to common shareholders									$ 151,574	$ 104,029	$ 101,008
Weighted average shares outstanding									121,670	109,409	107,282
Basic earnings per common share	$ 0.31	$ 0.30	$ 0.32	$ 0.32	$ 0.16	$ 0.27	$ 0.26	$ 0.26	$ 1.25	$ 0.95	$ 0.94
Diluted earnings per common share:
Net income allocated to common shareholders									$ 151,574	$ 104,029	$ 101,008
Weighted average shares outstanding									121,670	109,409	107,282
Incremental shares from assumed exercise of outstanding options									287	398	405
Diluted weighted average shares outstanding									121,957	109,807	107,687
Diluted earnings per common share	$ 0.31	$ 0.30	$ 0.32	$ 0.32	$ 0.16	$ 0.27	$ 0.26	$ 0.26	$ 1.24	$ 0.95	$ 0.94

Stock-Based Compensation Plans - Additional Information (Detail) - USD ($)	1 Months Ended	12 Months Ended
	May 31, 2008	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option plan, options outstanding		532,000	588,000
Stock options granted under Black-Scholes options pricing model		141,000
Cash received from stock option exercises		$ 1,701,000	$ 2,683,000	$ 5,151,000
Common stock, shares outstanding		140,000,017	110,184,922
Number of common shares, options exercisable		275,000
Common stock available for the granting of future options and restricted stock		8,019,000
2008 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized issuance of shares of Company common stock	9,000,000
Expiry of equity incentive plan		2018
2008 Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option plan, options outstanding		622,620	0
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total expenses on stock option		$ 400,281	$ 399,000	$ 485,000
Stock options granted under Black-Scholes options pricing model		140,500	11,500	121,500
Vesting period		5 years
Intrinsic value of options exercised		$ 2,200,000	$ 3,800,000	$ 3,900,000
Unrecognized compensation cost related to nonvested options granted		$ 957,000
Weighted-average period for expected cost recognized		2 years 10 months 24 days
Fair value of options vested		$ 364,000	505,000	489,000
Cash received from stock option exercises		$ 1,700,000	2,700,000	5,200,000
Common stock, shares outstanding		531,916
Options exercisable lower price range		$ 7.68
Options exercisable upper price range		$ 23.69
Stock Options [Member] \| Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of common shares, options exercisable		275,416
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to nonvested options granted		$ 8,800,000
2008 Equity Incentive Plan, granted restricted stock awards		424,000
Weighted average fair value of restricted stock		$ 23.84
Period of compensation cost recognized		5 years
Amount of compensation cost recognized		$ 3,100,000	$ 2,600,000	$ 2,300,000
Restricted Stock [Member] \| 2008 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
2008 Equity Incentive Plan, granted restricted stock awards		424,000	73,000	166,500
Weighted average fair value of restricted stock		$ 23.84	$ 21.59	$ 16.89
Restricted Stock [Member] \| 2008 Equity Incentive Plan [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		3 years	3 years	3 years
Restricted Stock [Member] \| 2008 Equity Incentive Plan [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		5 years	5 years	5 years

Stock-Based Compensation Plans - Estimated Fair Value of Stock Options (Detail) - Stock Options [Member] - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	2.40%	2.20%	2.90%
Volatility	25.40%	29.60%	33.10%
Risk-free interest rate	2.90%	1.80%	1.20%
Expected life	5 years 4 months 24 days	5 years 7 months 6 days	5 years 7 months 6 days
Weighted average grant date fair value	$ 5.08	$ 5.17	$ 3.96

Stock-Based Compensation Plans - Option Activity under Company's Stock Option Plans (Detail) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($) $ / shares shares
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Outstanding, Number of Stock Options, Beginning Balance \| shares	588
Granted, Number of Stock Options Outstanding \| shares	141
Exercised, Number of Stock Options Outstanding \| shares	(167)
Forfeited or expired, Number of Stock Options Outstanding \| shares	(30)
Outstanding, Number of Stock Options, Ending Balance \| shares	532
Vested or expected to vest, Number of Stock Options Outstanding \| shares	514
Exercisable, Number of Stock Options Outstanding \| shares	275
Outstanding, Weighted Average Exercise Price, Beginning Balance \| $ / shares	$ 13.12
Granted, Weighted Average Exercise Price \| $ / shares	23.73
Exercised, Weighted Average Exercise Price \| $ / shares	10.21
Forfeited or expired, Weighted Average Exercise Price \| $ / shares	15.07
Outstanding, Weighted Average Exercise Price, Ending Balance \| $ / shares	16.73
Vested or expected to vest, Weighted Average Exercise Price \| $ / shares	16.73
Exercisable, Weighted Average Exercise Price \| $ / shares	$ 13.29
Outstanding, Weighted Average Remaining Contractual Term	6 years 3 months 4 days
Vested or expected to vest, Weighted Average Remaining Contractual Term	6 years 2 months 23 days
Exercisable, Weighted Average Remaining Contractual Term	4 years 3 months 22 days
Outstanding, Aggregate Intrinsic Value \| $	$ 2,368
Vested or expected to vest, Aggregate Intrinsic Value \| $	2,303
Exercisable, Aggregate Intrinsic Value \| $	$ 1,915

Stock-Based Compensation Plans - Summary of Status of Company's Non-Vested Restricted Shares (Detail) - Restricted Stock [Member] shares in Thousands	12 Months Ended
	Dec. 31, 2018 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested, Shares, Beginning Balance \| shares	376
Granted, Shares \| shares	424
Vested, Shares \| shares	(158)
Forfeited, Shares \| shares	(18)
Nonvested, Shares, Ending Balance \| shares	624
Nonvested, Weighted Average Fair Value, Beginning Balance \| $ / shares	$ 16.82
Granted, Weighted Average Fair Value \| $ / shares	23.84
Vested, Weighted Average Fair Value \| $ / shares	16.50
Forfeited, Weighted Average Fair Value \| $ / shares	20.57
Nonvested, Weighted Average Fair Value, Ending Balance \| $ / shares	$ 21.56

Regulatory Matters - Additional Information (Detail) - USD ($) $ in Millions		12 Months Ended
	Jan. 02, 2016	Dec. 31, 2018	Dec. 31, 2017
Regulated Operations [Abstract]
Capital conservation buffer rate	0.625%
Capital conservation buffer phase period		4 years
Capital conservation buffer rate, full implementation		2.50%
Percentage of required capital conservation buffer rate of CET1		2.50%
Capital conservation buffer phase in beginning period		Jan. 01, 2016
Capital conservation buffer phase in end period		Jan. 01, 2019
Trust-preferred securities included in Tier 1 capital		$ 25.0	$ 25.0
Additional dividends without obtaining prior approval from bank regulators declared and paid		$ 184.0

Regulatory Matters - Regulatory Capital Amounts and Ratios for Company and Bank (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Parent Company [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total Capital (to Risk-Weighted Assets), Actual, Amount	$ 1,263,800	$ 1,039,060
Total Capital (to Risk-Weighted Assets), Actual, Ratio	14.13%	18.01%
Total Capital (to Risk-Weighted Assets), For Capital Adequacy Purposes, Amount	$ 715,283	$ 461,574
Tier 1 Capital (to Risk-Weighted Assets), Actual, Amount	$ 1,191,228	$ 973,169
Tier 1 Capital (to Risk-Weighted Assets), Actual, Ratio	13.32%	16.87%
Tier 1 Capital (to Risk-Weighted Assets), For Capital Adequacy Purposes, Amount	$ 536,462	$ 346,180
Common equity Tier I capital ratio, Actual, Amount	$ 1,166,228	$ 948,210
Common equity Tier I capital ratio, Actual, Ratio	13.04%	16.43%
Common equity Tier I capital ratio, For Capital Adequacy Purposes, Amount	$ 402,347	$ 259,635
Tier 1 Capital (to Average-Assets), Actual, Amount	$ 1,191,228	$ 973,169
Tier 1 Capital (to Average-Assets), Actual, Ratio	10.98%	11.88%
Tier 1 Capital (to Average-Assets), For Capital Adequacy Purposes, Amount	$ 433,834	$ 327,680
Bank [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total Capital (to Risk-Weighted Assets), Actual, Amount	$ 1,253,219	$ 1,029,126
Total Capital (to Risk-Weighted Assets), Actual, Ratio	14.03%	17.86%
Total Capital (to Risk-Weighted Assets), For Capital Adequacy Purposes, Amount	$ 714,601	$ 461,037
Total Capital (to Risk-Weighted Assets), Required To Be Well Capitalized, Amount	893,251	576,296
Tier 1 Capital (to Risk-Weighted Assets), Actual, Amount	$ 1,180,647	$ 963,235
Tier 1 Capital (to Risk-Weighted Assets), Actual, Ratio	13.22%	16.71%
Tier 1 Capital (to Risk-Weighted Assets), For Capital Adequacy Purposes, Amount	$ 535,951	$ 345,778
Tier 1 Capital (to Risk-Weighted Assets), Required To Be Well Capitalized, Amount	714,601	461,037
Common equity Tier I capital ratio, Actual, Amount	$ 1,180,647	$ 963,235
Common equity Tier I capital ratio, Actual, Ratio	13.22%	16.71%
Common equity Tier I capital ratio, For Capital Adequacy Purposes, Amount	$ 401,963	$ 259,333
Common equity Tier I capital ratio, To Be Well Capitalized under Prompt Corrective Action Provisions, Amount	580,613	374,592
Tier 1 Capital (to Average-Assets), Actual, Amount	$ 1,180,647	$ 963,235
Tier 1 Capital (to Average-Assets), Actual, Ratio	10.90%	11.77%
Tier 1 Capital (to Average-Assets), For Capital Adequacy Purposes, Amount	$ 433,403	$ 327,397
Tier 1 Capital (to Average-Assets), Required To Be Well Capitalized, Amount	$ 541,754	$ 409,246
Minimum [Member] \| Parent Company [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total Capital (to Risk-Weighted Assets), For Capital Adequacy Purposes, Ratio	8.00%	8.00%
Tier 1 Capital (to Risk-Weighted Assets), For Capital Adequacy Purposes, Ratio	6.00%	6.00%
Common equity Tier I capital ratio, For Capital Adequacy Purposes, Ratio	4.50%	4.50%
Tier 1 Capital (to Average-Assets), For Capital Adequacy Purposes, Ratio	4.00%	4.00%
Minimum [Member] \| Bank [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total Capital (to Risk-Weighted Assets), For Capital Adequacy Purposes, Ratio	8.00%	8.00%
Total Capital (to Risk-Weighted Assets), Required To Be Well Capitalized, Ratio	10.00%	10.00%
Tier 1 Capital (to Risk-Weighted Assets), For Capital Adequacy Purposes, Ratio	6.00%	6.00%
Tier 1 Capital (to Risk-Weighted Assets), Required To Be Well Capitalized, Ratio	8.00%	8.00%
Common equity Tier I capital ratio, For Capital Adequacy Purposes, Ratio	4.50%	4.50%
Common equity Tier I capital ratio, To Be Well Capitalized under Prompt Corrective Action Provisions, Ratio	6.50%	6.50%
Tier 1 Capital (to Average-Assets), For Capital Adequacy Purposes, Ratio	4.00%	4.00%
Tier 1 Capital (to Average-Assets), Required To Be Well Capitalized, Ratio	5.00%	5.00%

Fair Value Information - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Fair value assets transfers from Level 1 to Level 2	$ 0	$ 0
Fair value assets transfers from Level 2 to Level 1	0	0
Fair value liabilities transfers from Level 1 to Level 2	0	0
Fair value liabilities transfers from Level 2 to Level 1	$ 0	$ 0
Minimum [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Term of interest rate swap contracts by the counterparty, years	3 years
Maximum [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Term of interest rate swap contracts by the counterparty, years	30 years

Fair Value Information - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps, assets	$ 1,938	$ 3,211
Interest rate swaps, liabilities	444,193	556,984
Interest Rate Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps, assets	0	0
Carrying Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps, assets	1,938	3,211
Interest rate swaps, liabilities	1,938	3,211
Fair Value on Recurring Basis [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	0	0
Total liabilities	0	0
Fair Value on Recurring Basis [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	1,736,023	2,084,196
Total liabilities	1,938	3,211
Fair Value on Recurring Basis [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	0	0
Total liabilities	0	0
Fair Value on Recurring Basis [Member] \| Municipal Bonds [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - AFS	0	0
Fair Value on Recurring Basis [Member] \| Municipal Bonds [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - AFS	44,810	55,496
Fair Value on Recurring Basis [Member] \| Municipal Bonds [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - AFS	0	0
Fair Value on Recurring Basis [Member] \| Residential Mortgage-backed Securities [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - AFS	0	0
Fair Value on Recurring Basis [Member] \| Residential Mortgage-backed Securities [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - AFS	1,474,508	1,750,909
Fair Value on Recurring Basis [Member] \| Residential Mortgage-backed Securities [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - AFS	0	0
Fair Value on Recurring Basis [Member] \| CMO/REMIC - Residential [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - AFS	0	0
Fair Value on Recurring Basis [Member] \| CMO/REMIC - Residential [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - AFS	214,051	273,829
Fair Value on Recurring Basis [Member] \| CMO/REMIC - Residential [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - AFS	0	0
Fair Value on Recurring Basis [Member] \| Other Securities [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - AFS	0	0
Fair Value on Recurring Basis [Member] \| Other Securities [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - AFS	716	751
Fair Value on Recurring Basis [Member] \| Other Securities [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - AFS	0	0
Fair Value on Recurring Basis [Member] \| Investment Securities-AFS [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - AFS	0	0
Fair Value on Recurring Basis [Member] \| Investment Securities-AFS [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - AFS	1,734,085	2,080,985
Fair Value on Recurring Basis [Member] \| Investment Securities-AFS [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - AFS	0	0
Fair Value on Recurring Basis [Member] \| Interest Rate Swaps [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps, assets	0	0
Interest rate swaps, liabilities	0	0
Fair Value on Recurring Basis [Member] \| Interest Rate Swaps [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps, assets	1,938	3,211
Interest rate swaps, liabilities	1,938	3,211
Fair Value on Recurring Basis [Member] \| Interest Rate Swaps [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps, assets	0	0
Interest rate swaps, liabilities	0	0
Fair Value on Recurring Basis [Member] \| Carrying Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	1,736,023	2,084,196
Total liabilities	1,938	3,211
Fair Value on Recurring Basis [Member] \| Carrying Value [Member] \| Municipal Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - AFS	44,810	55,496
Fair Value on Recurring Basis [Member] \| Carrying Value [Member] \| Residential Mortgage-backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - AFS	1,474,508	1,750,909
Fair Value on Recurring Basis [Member] \| Carrying Value [Member] \| CMO/REMIC - Residential [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - AFS	214,051	273,829
Fair Value on Recurring Basis [Member] \| Carrying Value [Member] \| Other Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - AFS	716	751
Fair Value on Recurring Basis [Member] \| Carrying Value [Member] \| Investment Securities-AFS [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities - AFS	1,734,085	2,080,985
Fair Value on Recurring Basis [Member] \| Carrying Value [Member] \| Interest Rate Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps, assets	1,938	3,211
Interest rate swaps, liabilities	$ 1,938	$ 3,211

Fair Value Information - Estimated Fair Value of Financial Instruments (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Assets
Total cash and cash equivalents	$ 163,948	$ 144,377	$ 121,633	$ 106,097
Interest-earning balances due from depository institutions	7,670	17,952
FHLB stock	17,688	17,688
Investment securities available-for-sale	1,734,085	2,080,985
Investment securities held-to-maturity	744,440	829,890
Total loans, net of allowance for loan losses	7,700,998	4,771,046
Swaps	1,938	3,211
Deposits:
Noninterest-bearing	5,204,787	3,846,436
Interest-bearing	3,622,703	2,700,417
Junior subordinated debentures	25,774	25,774
Swaps	444,193	556,984
Carrying Value [Member]
Assets
Total cash and cash equivalents	163,948	144,377
Interest-earning balances due from depository institutions	7,670	17,952
FHLB stock		17,688
Investment securities available-for-sale	1,734,085	2,080,985
Investment securities held-to-maturity	744,440	829,890
Total loans, net of allowance for loan losses	7,700,998	4,771,046
Swaps	1,938	3,211
Deposits:
Noninterest-bearing		3,846,436
Interest-bearing	3,622,703	2,700,417
Borrowings	722,255	553,773
Junior subordinated debentures	25,774	25,774
Swaps	1,938	3,211
Estimated Fair Value [Member]
Assets
Total cash and cash equivalents	163,948	144,377
Interest-earning balances due from depository institutions	7,339	17,951
FHLB stock		17,688
Investment securities available-for-sale	1,734,085	2,080,985
Investment securities held-to-maturity	721,537	819,215
Total loans, net of allowance for loan losses	7,514,964	4,678,402
Swaps	1,938	3,211
Deposits:
Noninterest-bearing		3,846,436
Interest-bearing	3,614,682	2,697,781
Borrowings	721,601	553,416
Junior subordinated debentures	21,176	18,070
Swaps	1,938	3,211
Estimated Fair Value [Member] \| Level 1 [Member]
Assets
Total cash and cash equivalents	163,948	144,377
Interest-earning balances due from depository institutions	0	0
FHLB stock		0
Investment securities available-for-sale	0	0
Investment securities held-to-maturity	0	0
Total loans, net of allowance for loan losses	0	0
Swaps	0	0
Deposits:
Noninterest-bearing		3,846,436
Interest-bearing	0	0
Borrowings	0	0
Junior subordinated debentures	0	0
Swaps	0	0
Estimated Fair Value [Member] \| Level 2 [Member]
Assets
Total cash and cash equivalents	0	0
Interest-earning balances due from depository institutions	7,339	17,951
FHLB stock		17,688
Investment securities available-for-sale	1,734,085	2,080,985
Investment securities held-to-maturity	721,537	819,215
Total loans, net of allowance for loan losses	0	0
Swaps	1,938	3,211
Deposits:
Noninterest-bearing		0
Interest-bearing	3,614,682	2,697,781
Borrowings	721,601	553,416
Junior subordinated debentures	0	0
Swaps	1,938	3,211
Estimated Fair Value [Member] \| Level 3 [Member]
Assets
Total cash and cash equivalents	0	0
Interest-earning balances due from depository institutions	0	0
FHLB stock		0
Investment securities available-for-sale	0	0
Investment securities held-to-maturity	0	0
Total loans, net of allowance for loan losses	7,514,964	4,678,402
Swaps	0	0
Deposits:
Noninterest-bearing		0
Interest-bearing	0	0
Borrowings	0	0
Junior subordinated debentures	21,176	18,070
Swaps	$ 0	$ 0

Derivative Financial Instruments - Additional Information (Detail)	Dec. 31, 2018 USD ($) Agreement	Dec. 31, 2017 USD ($)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative assets and liabilities offset in balance sheet	$ 0
Total notional amount of the Company's swaps	$ 195,400,000	$ 198,500,000
Interest-rate Swap Agreements with Customers [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Number of interest-rate swap agreements \| Agreement	73

Derivative Financial Instruments - Fair Value of Derivative Instruments (Detail) - Derivatives Not Designated as Hedging Instruments [Member] - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Other Assets [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	$ 1,938	$ 3,211
Other Assets [Member] \| Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	1,938	3,211
Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	1,938	3,211
Other Liabilities [Member] \| Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	$ 1,938	$ 3,211

Derivative Financial Instruments - Effect of Derivative Instruments on Consolidated Statement of Earnings (Detail) - Derivatives Not Designated as Hedging Instruments [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Derivatives, Fair Value [Line Items]
Amount of Gain Recognized in Income on Derivative Instruments	$ 340	$ 615	$ 691
Interest Rate Swaps [Member] \| Other Income [Member]
Derivatives, Fair Value [Line Items]
Amount of Gain Recognized in Income on Derivative Instruments	$ 340	$ 615	$ 691

Other Comprehensive Income (Loss) - Summary of Components of OCI (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Equity [Abstract]
Net change in fair value recorded in accumulated OCI, Before-tax	$ (26,435)	$ (11,336)	$ (15,792)
Net change in fair value recorded in accumulated OCI, Tax effect	7,815	4,760	6,633
Net change in fair value recorded in accumulated OCI, After-tax	(18,620)	(6,576)	(9,159)
Amortization of unrealized (gains)/ losses on securities transferred from available-for-sale to held-to-maturity, Before-tax	(2,091)	(3,293)	(2,174)
Amortization of unrealized (gains)/ losses on securities transferred from available-for-sale to held-to-maturity, Tax effect	619	1,383	913
Amortization of unrealized (gains)/ losses on securities transferred from available-for-sale to held-to-maturity, After-tax	(1,472)	(1,910)	(1,261)
Net realized (gain)/loss reclassified into earnings, Before-tax	0	(402)	(548)
Net realized (gain)/loss reclassified into earnings, Tax Effect	0	169	230
Net realized (gain)/loss reclassified into earnings, After-Tax	0	(233)	(318)
Net change, Before-tax	(28,526)	(15,031)	(18,514)
Net change, Tax effect	(8,434)	(6,312)	(7,776)
Net change, After-tax	$ (20,092)	$ (8,719)	$ (10,738)

Balance Sheet Offsetting - Schedule of Balance Sheet Offsetting (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Offsetting Assets Liabilities [Line Items]
Financial assets, Net Amounts of Assets presented in the Condensed Consolidated Balance Sheets	$ 1,938	$ 3,211
Financial liabilities, Gross Amounts Recognized in the Consolidated Balance Sheets	446,458	558,268
Financial liabilities, Gross Amounts Offset in the Consolidated Balance Sheets	(2,265)	(1,284)
Financial liabilities, Net Amounts of Assets presented in the Consolidated	444,193	556,984
Financial liabilities, Gross Amounts Not Offset in the Consolidated Balance Sheets, Financial Instruments	2,265	1,284
Financial liabilities, Gross Amounts Not Offset in the Consolidated Balance Sheets, Collateral Pledged	(487,607)	(586,519)
Financial liabilities, Gross Amounts Not Offset in the Consolidated Balance Sheets, Net Amount	(41,149)	(28,251)
Repurchase Agreements [Member]
Offsetting Assets Liabilities [Line Items]
Financial liabilities, Gross Amounts Recognized in the Consolidated Balance Sheets	442,255	553,773
Financial liabilities, Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Financial liabilities, Net Amounts of Assets presented in the Consolidated	442,255	553,773
Financial liabilities, Gross Amounts Not Offset in the Consolidated Balance Sheets, Financial Instruments	0	0
Financial liabilities, Gross Amounts Not Offset in the Consolidated Balance Sheets, Collateral Pledged	(487,607)	(573,759)
Financial liabilities, Gross Amounts Not Offset in the Consolidated Balance Sheets, Net Amount	(45,352)	(19,986)
Interest Rate Swaps [Member]
Offsetting Assets Liabilities [Line Items]
Financial assets, Gross Amounts Recognized in the Consolidated Balance Sheets	1,938	3,211
Financial assets, Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Financial assets, Net Amounts of Assets presented in the Condensed Consolidated Balance Sheets	0	0
Financial assets, Gross Amounts Not Offset in the Consolidated Balance Sheets, Financial Instruments	1,938	3,211
Financial assets, Gross Amounts Not Offset in the Consolidated Balance Sheets, Collateral Pledged	0	0
Financial assets, Gross Amounts Not Offset in the Consolidated Balance Sheets, Net Amount	1,938	3,211
Interest Rate Swaps [Member] \| Derivatives Not Designated as Hedging Instruments [Member]
Offsetting Assets Liabilities [Line Items]
Financial assets, Gross Amounts Recognized in the Consolidated Balance Sheets	1,938	3,211
Financial assets, Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Financial assets, Net Amounts of Assets presented in the Condensed Consolidated Balance Sheets	0	0
Financial assets, Gross Amounts Not Offset in the Consolidated Balance Sheets, Financial Instruments	1,938	3,211
Financial assets, Gross Amounts Not Offset in the Consolidated Balance Sheets, Collateral Pledged	0	0
Financial assets, Gross Amounts Not Offset in the Consolidated Balance Sheets, Net Amount	1,938	3,211
Financial liabilities, Gross Amounts Recognized in the Consolidated Balance Sheets	4,203	4,495
Financial liabilities, Gross Amounts Offset in the Consolidated Balance Sheets	(2,265)	(1,284)
Financial liabilities, Net Amounts of Assets presented in the Consolidated	1,938	3,211
Financial liabilities, Gross Amounts Not Offset in the Consolidated Balance Sheets, Financial Instruments	2,265	1,284
Financial liabilities, Gross Amounts Not Offset in the Consolidated Balance Sheets, Collateral Pledged	0	(12,760)
Financial liabilities, Gross Amounts Not Offset in the Consolidated Balance Sheets, Net Amount	$ 4,203	$ (8,265)

Revenue Recognition - Summary of Non Interest Income, Segregated by Revenue Streams in-Scope and Out-of-Scope of Topic 606 (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Noninterest income:
Gain on OREO, net	$ 3,546	$ 6	$ (20)
Other	6,588	9,632	4,277
Total noninterest income	43,481	42,118	35,552
Service Charges on Deposit Accounts [Member]
Noninterest income:
Revenue from contract with customer	17,070	15,809	15,066
Trust and Investment Services [Member]
Noninterest income:
Revenue from contract with customer	8,774	9,845	9,595
Bankcard Services [Member]
Noninterest income:
Revenue from contract with customer	3,485	3,406	2,921
Accounting Standards Update 2014-09 [Member]
Noninterest income:
Gain on OREO, net	3,546	6	(20)
Other	6,588	4,888	3,457
Total noninterest income	39,463	33,954	31,019
Accounting Standards Update 2014-09 [Member] \| Service Charges on Deposit Accounts [Member]
Noninterest income:
Revenue from contract with customer	17,070	15,809	15,066
Accounting Standards Update 2014-09 [Member] \| Trust and Investment Services [Member]
Noninterest income:
Revenue from contract with customer	8,774	9,845	9,595
Accounting Standards Update 2014-09 [Member] \| Bankcard Services [Member]
Noninterest income:
Revenue from contract with customer	3,485	3,406	2,921
Accounting Standards Update 2014-09 Not Adopted [Member]
Noninterest income:
Total noninterest income	$ 4,018	$ 8,164	$ 4,533

Condensed Financial Information of Parent Company - Condensed Balance Sheets (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Assets
Other assets, net	$ 67,807	$ 25,317
Total assets	11,529,153	8,270,586
Liabilities	9,677,963	7,201,320
Stockholders' equity	1,851,190	1,069,266	$ 990,862	$ 923,399
Total liabilities and stockholders' equity	11,529,153	8,270,586
Parent Company [Member]
Assets
Investment in subsidiaries	1,865,609	1,084,332
Other assets, net	31,628	26,703
Total assets	1,897,237	1,111,035
Liabilities	46,047	41,769
Stockholders' equity	1,851,190	1,069,266
Total liabilities and stockholders' equity	$ 1,897,237	$ 1,111,035

Condensed Financial Information of Parent Company - Condensed Statements of Earnings (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Condensed Financial Statements, Captions [Line Items]
Other expense, net									$ (179,911)	$ (140,753)	$ (136,740)
Net earnings	$ 43,159	$ 38,558	$ 35,373	$ 34,913	$ 17,851	$ 29,683	$ 28,373	$ 28,504	152,003	104,411	101,429
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Excess in net earnings of subsidiaries									78,601	50,253	55,192
Dividends from the Bank									77,800	57,000	49,000
Other expense, net									(4,398)	(2,842)	(2,763)
Net earnings									$ 152,003	$ 104,411	$ 101,429

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

Condensed Financial Information of Parent Company - Condensed Statements of Cash Flows (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Adjustments to reconcile net earnings to cash used in operating activities:
Stock-based compensation	$ 3,508	$ 2,953	$ 2,803
Total adjustments	16,375	33,998	23,103
Net cash used in operating activities	168,378	138,409	124,532
Cash Flows from Investing Activities
Net cash provided by investing activities	807,656	140,035	(154,016)
Cash Flows from Financing Activities
Cash dividends on common stock	(65,966)	(57,047)	(51,625)
Proceeds from exercise of stock options	1,701	2,683	5,151
Tax benefit related to exercise of stock options	0	0	932
Repurchase of common stock	(7,760)	(1,128)	(1,907)
Net cash (used in) provided by financing activities	(956,463)	(255,700)	45,020
Net increase in cash and cash equivalents	19,571	22,744	15,536
Cash and cash equivalents, beginning of period	144,377	121,633	106,097
Cash and cash equivalents, end of period	163,948	144,377	121,633
Parent Company [Member]
Cash Flows from Operating Activities
Net earnings	152,003	104,411	101,429
Adjustments to reconcile net earnings to cash used in operating activities:
Earnings of subsidiaries	(156,401)	(107,253)	(104,192)
Tax settlement received from the Bank	0	1,577	2,557
Stock-based compensation	3,508	2,953	2,803
Other operating activities, net	(2,052)	(1,725)	(3,362)
Total adjustments	(154,945)	(104,448)	(102,194)
Net cash used in operating activities	(2,942)	(37)	(765)
Cash Flows from Investing Activities
Dividends received from the Bank	77,800	57,000	49,000
Net cash provided by investing activities	77,800	57,000	49,000
Cash Flows from Financing Activities
Cash dividends on common stock	(65,966)	(57,047)	(51,625)
Proceeds from exercise of stock options	1,701	2,683	5,151
Tax benefit related to exercise of stock options	0		932
Repurchase of common stock	(7,760)	(1,128)	(1,907)
Net cash (used in) provided by financing activities	(72,025)	(55,492)	(47,449)
Net increase in cash and cash equivalents	2,833	1,471	786
Cash and cash equivalents, beginning of period	19,217	17,746	16,960
Cash and cash equivalents, end of period	$ 22,050	$ 19,217	$ 17,746

Quarterly Financial Data - Summarized Quarterly Financial Data (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Selected Quarterly Financial Information [Abstract]
Net interest income	$ 113,016	$ 92,820	$ 72,688	$ 70,521	$ 71,275	$ 71,739	$ 70,483	$ 65,433	$ 349,045	$ 278,930	$ 257,074
Recapture of provision for loan losses	3,000	500	(1,000)	(1,000)	(1,500)	(1,500)	(1,000)	(4,500)
Net earnings	$ 43,159	$ 38,558	$ 35,373	$ 34,913	$ 17,851	$ 29,683	$ 28,373	$ 28,504	$ 152,003	$ 104,411	$ 101,429
Basic earnings per common share	$ 0.31	$ 0.30	$ 0.32	$ 0.32	$ 0.16	$ 0.27	$ 0.26	$ 0.26	$ 1.25	$ 0.95	$ 0.94
Diluted earnings per common share	$ 0.31	$ 0.30	$ 0.32	$ 0.32	$ 0.16	$ 0.27	$ 0.26	$ 0.26	$ 1.24	$ 0.95	$ 0.94

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

+ References

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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