CVB Financial (CVBF) 10-Q 12 Nov 19 2019 Q3 Quarterly report Financial data

Cover Page

Cover Page - shares	9 Months Ended
	Sep. 30, 2019	Oct. 31, 2019
Cover [Abstract]
Document Type	10-Q
Current Fiscal Year End Date	--12-31
Entity Central Index Key	0000354647
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2019
Amendment Flag	false
Document Quarterly Report	true
Document Transition Report	false
Entity Interactive Data Current	Yes
Document Period End Date	Sep. 30, 2019
Entity Registrant Name	CVB FINANCIAL CORP
Entity Current Reporting Status	Yes
Trading Symbol	CVBF
Title of 12(b) Security	Common Stock
Security Exchange Name	NASDAQ
Entity File Number	000-10140
Entity Incorporation, State or Country Code	CA
Entity Tax Identification Number	95-3629339
Entity Address, Address Line One	701 North Haven Ave.,
Entity Address, City or Town	Ontario
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	91764
City Area Code	909
Local Phone Number	980-4030
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		140,106,948

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Assets
Cash and due from banks	$ 222,248	$ 144,008
Interest-earning balances due from Federal Reserve	215,300	19,940
Total cash and cash equivalents	437,548	163,948
Interest-earning balances due from depository institutions	5,673	7,670
Investment securities available-for-sale, at fair value (with amortized cost of $1,549,406 at September 30, 2019, and $1,757,666 at December 31, 2018)	1,570,406	1,734,085
Investment securities held-to-maturity (with fair value of $711,891 at September 30, 2019, and $721,537 at December 31, 2018)	703,953	744,440
Total investment securities	2,274,359	2,478,525
Investment in stock of Federal Home Loan Bank (FHLB)	17,688	17,688
Loans and lease finance receivables	7,494,451	7,764,611
Allowance for loan losses	(68,672)	(63,613)
Net loans and lease finance receivables	7,425,779	7,700,998
Premises and equipment, net	53,256	58,193
Bank owned life insurance (BOLI)	224,841	220,758
Accrued interest receivable	27,244	30,649
Intangibles	45,446	53,784
Goodwill	663,707	666,539
Other real estate owned (OREO)	9,450	420
Income taxes	44,630	62,174
Other assets	103,141	67,807
Total assets	11,332,762	11,529,153
Deposits:
Noninterest-bearing	5,385,104	5,204,787
Interest-bearing	3,409,226	3,622,703
Total deposits	8,794,330	8,827,490
Customer repurchase agreements	407,850	442,255
Other borrowings	4,914	280,000
Deferred compensation	22,334	20,033
Junior subordinated debentures	25,774	25,774
Other liabilities	110,667	82,411
Total liabilities	9,365,869	9,677,963
Commitments and Contingencies
Stockholders' Equity
Common stock, authorized, 225,000,000 shares without par; issued and outstanding 140,157,063 at September 30, 2019, and 140,000,017 at December 31, 2018	1,298,138	1,293,669
Retained earnings	656,659	575,805
Accumulated other comprehensive income (loss), net of tax	12,096	(18,284)
Total stockholders' equity	1,966,893	1,851,190
Total liabilities and stockholders' equity	$ 11,332,762	$ 11,529,153

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Amortized cost	$ 1,549,406	$ 1,757,666
Fair Value, Held-to-maturity	$ 711,891	$ 721,537
Common stock, par value
Common stock, authorized	225,000,000	225,000,000
Common stock, shares issued	140,157,063	140,000,017
Common stock, shares outstanding	140,157,063	140,000,017

Condensed Consolidated Statemen

Condensed Consolidated Statements of Earnings and Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Interest income:
Loans and leases, including fees	$ 98,796	$ 79,818	$ 300,326	$ 192,382
Investment securities:
Investment securities available-for-sale	9,222	11,521	29,985	35,086
Investment securities held-to-maturity	4,298	4,666	13,249	14,238
Total investment income	13,520	16,187	43,234	49,324
Dividends from FHLB stock	301	329	931	959
Interest-earning deposits with other institutions	946	304	1,140	1,475
Total interest income	113,563	96,638	345,631	244,140
Interest expense:
Deposits	4,589	2,967	12,553	6,041
Borrowings and customer repurchase agreements	568	606	3,555	1,396
Junior subordinated debentures	247	245	771	674
Total interest expense	5,404	3,818	16,879	8,111
Net interest income before provision for (recapture of) loan losses	108,159	92,820	328,752	236,029
Provision for (recapture of) loan losses	1,500	500	5,000	(1,500)
Net interest income after provision for (recapture of) loan losses	106,659	92,320	323,752	237,529
Noninterest income:
BOLI income	1,797	936	4,482	2,984
Gain on OREO, net			129	3,540
Gain on sale of building, net			4,545
Gain on eminent domain condemnation, net			5,685
Other	2,297	1,824	6,944	4,393
Total noninterest income	11,894	10,112	46,402	32,723
Noninterest expense:
Salaries and employee benefits	30,122	26,319	88,286	69,684
Occupancy and equipment	5,092	5,324	16,348	13,834
Professional services	1,688	1,154	5,653	4,374
Software licenses and maintenance	2,450	2,317	7,414	5,836
Marketing and promotion	1,517	1,134	4,149	3,638
Amortization of intangible assets	2,648	1,736	8,338	2,395
Acquisition related expenses	244	6,645	6,005	7,942
Other	3,774	4,251	13,474	11,377
Total noninterest expense	47,535	48,880	149,667	119,080
Earnings before income taxes	71,018	53,552	220,487	151,172
Income taxes	20,595	14,994	63,941	42,328
Net earnings	50,423	38,558	156,546	108,844
Other comprehensive income (loss):
Unrealized gain (loss) on securities arising during the period, before tax	5,423	(10,387)	43,136	(49,155)
Less: Reclassification adjustment for net gain on securities included in net income	(5)	0	(5)	0
Other comprehensive income (loss), before tax	5,418	(10,387)	43,131	(49,155)
Less: Income tax (expense) benefit related to items of other comprehensive income	(1,602)	3,070	(12,751)	14,532
Other comprehensive income (loss), net of tax	3,816	(7,317)	30,380	(34,623)
Comprehensive income	$ 54,239	$ 31,241	$ 186,926	$ 74,221
Basic earnings per common share	$ 0.36	$ 0.30	$ 1.12	$ 0.94
Diluted earnings per common share	$ 0.36	$ 0.30	$ 1.12	$ 0.94
Service Charges on Deposit Accounts [Member]
Noninterest income:
Revenue from contract with customer, including assessed tax	$ 4,833	$ 4,295	$ 15,039	$ 12,431
Trust and Investment Services [Member]
Noninterest income:
Revenue from contract with customer, including assessed tax	2,330	2,182	6,964	6,738
Bankcard Services [Member]
Noninterest income:
Revenue from contract with customer, including assessed tax	$ 637	$ 875	$ 2,614	$ 2,637

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Community Bank [Member]	Common Stock [Member]	Common Stock [Member]Community Bank [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning balance at Dec. 31, 2017	$ 1,069,266		$ 573,453		$ 494,361	$ 1,452
Beginning balance, shares at Dec. 31, 2017			110,185
Cumulative adjustment upon adoption of ASU 2018-02					(356)	356
Repurchase of common stock	(988)		$ (988)
Repurchase of common stock, shares			(42)
Issuance of common stock for acquisition of Community Bank		$ 722,767		$ 722,767
Issuance of common stock for acquisition of Community Bank, shares				29,842
Exercise of stock options	1,504		$ 1,504
Exercise of stock options, shares			145
Shares issued pursuant to stock-based compensation plan	2,316		$ 2,316
Shares issued pursuant to stock-based compensation plan, shares			205
Cash dividends declared on common stock	(50,506)				(50,506)
Net earnings	108,844				108,844
Other comprehensive income (loss)	(34,623)					(34,623)
Ending balance at Sep. 30, 2018	1,818,580		$ 1,299,052		552,343	(32,815)
Ending balance, shares at Sep. 30, 2018			140,335
Beginning balance at Jun. 30, 2018	1,083,417		$ 575,502		533,413	(25,498)
Beginning balance, shares at Jun. 30, 2018			110,302
Repurchase of common stock	(151)		$ (151)
Repurchase of common stock, shares			(6)
Issuance of common stock for acquisition of Community Bank		$ 722,767		$ 722,767
Issuance of common stock for acquisition of Community Bank, shares				29,842
Exercise of stock options	87		$ 87
Exercise of stock options, shares			7
Shares issued pursuant to stock-based compensation plan	847		$ 847
Shares issued pursuant to stock-based compensation plan, shares			190
Cash dividends declared on common stock	(19,628)				(19,628)
Net earnings	38,558				38,558
Other comprehensive income (loss)	(7,317)					(7,317)
Ending balance at Sep. 30, 2018	1,818,580		$ 1,299,052		552,343	(32,815)
Ending balance, shares at Sep. 30, 2018			140,335
Beginning balance at Dec. 31, 2018	1,851,190		$ 1,293,669		575,805	(18,284)
Beginning balance, shares at Dec. 31, 2018			140,000
Repurchase of common stock	(1,535)		$ (1,535)
Repurchase of common stock, shares			(70)
Exercise of stock options	2,212		$ 2,212
Exercise of stock options, shares			160
Shares issued pursuant to stock-based compensation plan	3,792		$ 3,792
Shares issued pursuant to stock-based compensation plan, shares			67
Cash dividends declared on common stock	(75,692)				(75,692)
Net earnings	156,546				156,546
Other comprehensive income (loss)	30,380					30,380
Ending balance at Sep. 30, 2019	1,966,893		$ 1,298,138		656,659	12,096
Ending balance, shares at Sep. 30, 2019			140,157
Beginning balance at Jun. 30, 2019	1,936,677		$ 1,296,885		631,512	8,280
Beginning balance, shares at Jun. 30, 2019			140,142
Repurchase of common stock	(723)		$ (723)
Repurchase of common stock, shares			(34)
Exercise of stock options	155		$ 155
Exercise of stock options, shares			15
Shares issued pursuant to stock-based compensation plan	1,821		$ 1,821
Shares issued pursuant to stock-based compensation plan, shares			34
Cash dividends declared on common stock	(25,276)				(25,276)
Net earnings	50,423				50,423
Other comprehensive income (loss)	3,816					3,816
Ending balance at Sep. 30, 2019	$ 1,966,893		$ 1,298,138		$ 656,659	$ 12,096
Ending balance, shares at Sep. 30, 2019			140,157

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Stockholders' Equity [Abstract]
Cash dividends per common share	$ 0.18	$ 0.14	$ 0.54	$ 0.42

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash Flows from Operating Activities
Interest and dividends received	$ 331,953	$ 245,842
Service charges and other fees received	31,441	26,107
Interest paid	(16,155)	(8,642)
Net cash paid to vendors, employees and others	(140,482)	(110,799)
Income taxes	(59,347)	(35,879)
Payments to FDIC, loss share agreement		(65)
Net cash provided by operating activities	147,410	116,564
Cash Flows from Investing Activities
Proceeds from redemption of FHLB stock		17,250
Net change in interest-earning balances from depository institutions	1,997	11,934
Proceeds from sale of investment securities held-for-sale	152,644	716,996
Proceeds from repayment of investment securities available-for-sale	268,766	296,922
Proceeds from maturity of investment securities available-for-sale	6,059	20,260
Purchases of investment securities available-for-sale	(225,416)	(98,709)
Proceeds from repayment and maturity of investment securities held-to-maturity	81,001	67,861
Purchases of investment securities held-to-maturity	(42,917)
Net increase in equity investments	(3,511)	(24,054)
Net decrease (increase) in loan and lease finance receivables	289,490	(6,806)
Proceeds on eminent domain condemnation, net	5,685
Proceeds from sale of building, net	5,487
Purchase of premises and equipment	(3,061)	(3,483)
Proceeds from BOLI death benefit	1,509	882
Proceeds from sales of other real estate owned	523	8,067
Cash acquired from acquisition, net of cash paid		(132,918)
Net cash provided by investing activities	538,256	874,202
Cash Flows from Financing Activities
Net increase (decrease) in other deposits	37,061	(241,934)
Net decrease in time deposits	(70,221)	(65,079)
Repayment of FHLB advances		(297,571)
Net decrease in other borrowings	(275,086)	(136,000)
Net decrease in customer repurchase agreements	(34,405)	(154,296)
Cash dividends on common stock	(70,092)	(46,304)
Repurchase of common stock	(1,535)	(988)
Proceeds from exercise of stock options	2,212	1,504
Net cash used in financing activities	(412,066)	(940,668)
Net increase in cash and cash equivalents	273,600	50,098
Cash and cash equivalents, beginning of period	163,948	144,377
Cash and cash equivalents, end of period	437,548	194,475
Reconciliation of Net Earnings to Net Cash Provided by Operating Activities
Net earnings	156,546	108,844
Adjustments to reconcile net earnings to net cash provided by operating activities:
Gain on sale of investment securities, net	(5)
Gain on eminent domain condemnation, net	(5,685)
Gain on sale of building, net	(4,545)
Gain on sale of other real estate owned	(105)	(3,540)
Increase in BOLI	(5,592)	(3,053)
Net amortization of premiums and discounts on investment securities	7,593	10,661
Accretion of discount for acquired loans, net	(22,369)	(6,889)
Provision for (recapture of) loan losses	5,000	(1,500)
Payments to FDIC, loss share agreement		(65)
Stock-based compensation	3,792	2,316
Depreciation and amortization, net	16,993	4,146
Change in other assets and liabilities	(4,213)	5,644
Total adjustments	(9,136)	7,720
Net cash provided by operating activities	147,410	116,564
Supplemental Disclosure of Non-cash Investing Activities
Transfer of loans to other real estate owned	$ 9,450	420
Issuance of common stock for acquisition		$ 722,767

Business

Business	9 Months Ended
	Sep. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Business	1. BUSINESS The condensed consolidated financial statements include CVB Financial Corp. (referred to herein on an unconsolidated basis as “CVB” and on a consolidated basis as “we,” “our” or the “Company”) and its wholly owned subsidiary, Citizens Business Bank (the “Bank” or “CBB”), after elimination of all intercompany transactions and balances. The Company has one inactive subsidiary, Chino Valley Bancorp. The Company is also the common stockholder of CVB Statutory Trust III. CVB Statutory Trust III was created in January 2006 to issue trust preferred securities in order to raise capital for the Company. In accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 810, Consolidation, this trust does not meet the criteria for consolidation. The Company’s primary operations are related to traditional banking activities. This includes the acceptance of deposits and the lending and investing of money through the operations of the Bank. The Bank also provides trust and investment-related services to customers through CitizensTrust. The Bank’s customers consist primarily of small to mid-sized On August 10, 2018, we completed the acquisition of Community Bank (“CB”), headquartered in Pasadena, California with 16 banking centers located throughout the greater Los Angeles and Orange County areas and total assets of approximately $4.09 billion. Our condensed consolidated financial statements for 2018 include CB operations, post-merger. See Note 4 – Business Combinations

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	2. BASIS OF PRESENTATION The accompanying unaudited condensed consolidated financial statements and notes thereto have been prepared in accordance with the rules and regulations of the Securities and Exchange Commission (“SEC”) for Form 10-Q 10-K Reclassification

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Summary of Significant Accounting Policies	3. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Except as discussed below, our accounting policies are described in Note 3 — Summary of Significant Accounting Policies 10-K 10 Use of Estimates in the Preparation of Financial Statements Adoption of New Accounting Standards 2017-12, 2017-12 non-financial 2017-12 In June 2018, the FASB issued ASU No. 2018-07, 2018-07 re-measured 2018-07 In February 2016, FASB issued ASU No. 2016-02, . 2016-02 right-of-use 2018-10, , 2018-10 2016-02. In July 2018, the FASB issued ASU No. 2018-11, , 2016-02, non-lease 2018-11: non-lease 2016-02. Practical Expedients to Topic 842, Leases non-lease The Company’s leasing portfolio consists of real estate leases, which are used primarily for the banking operations of the Company. All leases in the current portfolio have been classified as operating leases, although this may change in the future. ROU assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the obligation to make lease payments arising from the lease. The adoption of this ASU during the first quarter of 2019 did not have a material impact on the Company’s consolidated financial statements. At adoption, the Company recognized a lease liability and a corresponding ROU asset of approximately $20 million on the consolidated balance sheet related to its future lease payments as a lessee under operating leases. See Note 13 — Leases Operating lease ROU assets and lease liabilities are included in other assets other liabilities Company’s Recent Accounting Pronouncements 2016-13, off-balance held-to-maturity 2016-13 We have determined a and based on and validate its In January 2017, the FASB issued ASU No. 2017-04, 2017-04 that In August 2018, the FASB issued ASU No. 2018-13, - 2018-13

Business Combinations

Business Combinations	9 Months Ended
	Sep. 30, 2019
Business Combinations [Abstract]
Business Combinations	4. BUSINESS COMBINATIONS Community Bank Acquisition On August 10, 2018, the Company completed the acquisition of CB, headquartered in Pasadena, California. The Company acquired all of the assets and assumed all of the liabilities of CB for $180.7 million in cash and $722.8 million in stock. As a result, CB was merged with the Bank, the principal subsidiary of CVB. The primary reason for the acquisition was to further strengthen the Company’s presence in Southern California. At close, CB had 16 banking centers located throughout the greater Los Angeles and Orange County areas. The systems integration of CB and CBB was completed in November 2018. The consolidation of banking centers was completed during the second quarter of 2019, in which four additional banking centers that were in close proximity were consolidated. For the first six months of 2019, a total of 10 banking centers were consolidated, including nine former CB centers. The assets acquired and liabilities assumed have been accounted for under the acquisition method of accounting. The assets and liabilities, both tangible and intangible, were recorded at their estimated fair values as of the August 10, 2018 acquisition date. The purchase price allocation was finalized in the second quarter of 2019. 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 2,738,100 Accrued interest receivable 7,916 Premises and equipment 14,632 BOLI 70,904 Core deposit intangible 52,200 Other assets 53,291 Total assets acquired 3,719,091 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 356,342 Goodwill $ 547,144 At the date of acquisition, the gross contractual loan amounts receivable, inclusive of all principal and interest, was approximately $3 billion. The Company’s best estimate of the contractual principal cash flows for loans not expected to be collected at the date of acquisition was approximately $4.5 million. We have included the financial results of the business combination in the condensed consolidated statement of earnings and comprehensive income beginning on the acquisition date. The Company incurred merger related expenses associated with the CB acquisition of $244,000 and $6.0 million for the three and nine months ended September 30, 2019, respectively, and $6.6 million and $7.9 million for the three and nine months ended September 30, 2018, respectively. For illustrative purposes only, the following table presents certain unaudited pro forma information for the three and nine months ended September 30, 2018. This unaudited estimated pro forma financial information was calculated as if CB had been acquired as of the beginning of the year prior to the date of acquisition. This unaudited pro forma information combines the historical results of CB with the Company’s consolidated historical results and includes certain adjustments reflecting the estimated impact of certain fair value adjustments for the respective periods. The pro forma information is not indicative of what would have occurred had the acquisition occurred as of the beginning of the year prior to the acquisition. The unaudited pro forma information does not consider any changes to the provision for credit losses resulting from recording loan assets at fair value, cost savings, or business synergies. Unaudited Pro Forma Three Months Ended Nine Months Ended September 30, 2018 (Dollars in thousands, except per share amounts) Total revenues (net interest income plus noninterest income) $ 120,467 $ 364,846 Net income $ 44,623 $ 138,274 Earnings per share - basic $ 0.32 $ 0.99 Earnings per share - diluted $ 0.32 $ 0.99 1 4

Investment Securities

Investment Securities	9 Months Ended
	Sep. 30, 2019
Investments, Debt and Equity Securities [Abstract]
Investment Securities	5. INVESTMENT SECURITIES The amortized cost and estimated fair value of investment securities are summarized below. The majority of securities held are available-for-sale September 30, 2019 Amortized Gross Gain Gross Loss Fair Value Total Percent (Dollars in thousands) Investment securities available-for-sale: Residential mortgage-backed securities $ 1,127,395 $ 20,105 $ (1,341 ) $ 1,146,159 72.99 % CMO/REMIC - residential 381,615 1,649 (336 ) 382,928 24.38 % Municipal bonds 39,564 924 (1 ) 40,487 2.58 % Other securities 832 - - 832 0.05 % Total available-for-sale $ 1,549,406 $ 22,678 $ (1,678 ) $ 1,570,406 100.00 % Investment securities held-to-maturity: Government agency/GSE $ 123,917 $ 3,238 $ (170 ) $ 126,985 17.60 % Residential mortgage-backed securities 172,919 2,624 (3 ) 175,540 24.56 % CMO 204,263 76 (1,467 ) 202,872 29.02 % Municipal bonds 202,854 4,198 (558 ) 206,494 28.82 % Total held-to-maturity $ 703,953 $ 10,136 $ (2,198 ) $ 711,891 100.00 % December 31, 2018 Amortized Gross Gain Gross Loss Fair Value T (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 $ 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 $ 744,440 $ 1,128 $ (24,031 ) $ 721,537 100.00 % 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 Three Months Ended For the Nine Months Ended 2019 2018 2019 2018 (Dollars in thousands) Investment securities available-for-sale: Taxable $ 8,949 $ 11,126 $ 29,079 $ 33,861 Tax-advantaged 273 395 906 1,225 Total interest income from available-for-sale 9,222 11,521 29,985 35,086 Investment securities held-to-maturity: Taxable 2,883 2,961 8,725 8,887 Tax-advantaged 1,415 1,705 4,524 5,351 Total interest income from held-to-maturity 4,298 4,666 13,249 14,238 Total interest income from investment securities $ 13,520 $ 16,187 $ 43,234 $ 49,324 Approximately % of the total investment securities portfolio at September 30, 2019 represents securities issued by the U.S. government or U.S. government-sponsored enterprises, with the implied guarantee of payment of principal and interest. The tables below show the Company’s investment securities’ gross unrealized losses and fair value by investment category and length of time that individual securities have been in a continuous unrealized loss position at September 30, 2019 and December 31, 2018. Management has reviewed individual securities to determine whether a decline in fair value below the amortized cost basis is other-than-temporary. The unrealized losses on these securities were primarily attributed to changes in interest rates. The issuers of these securities have not, to our knowledge, evidenced any cause for default on these securities. These securities have fluctuated in value since their purchase dates as market interest i September 30, 2019 Less Than 12 Months 12 Months or Longer Total Fair Value Gross Losses Fair Value Gross Losses Fair Value Gross (Dollars in thousands) Investment securities available-for-sale: Residential mortgage-backed securities $ 2 $ - $ 127,904 $ (1,341 ) $ 127,906 $ (1,341 ) CMO/REMIC - residential 122,595 (156 ) 39,498 (180 ) 162,093 (336 ) Municipal bonds - - 564 (1 ) 564 (1 ) Total available-for-sale $ 122,597 $ (156 ) $ 167,966 $ (1,522 ) $ 290,563 $ (1,678 ) Investment securities held-to-maturity: Government agency/GSE $ - $ - $ 19,923 $ (170 ) $ 19,923 $ (170 ) Residential mortgage-backed securities 5,021 (3 ) - - 5,021 (3 ) CMO - - 178,297 (1,467 ) 178,297 (1,467 ) Municipal bonds 3,037 (5 ) 32,217 (553 ) 35,254 (558 ) Total held-to-maturity $ 8,058 $ (8 ) $ 230,437 $ (2,190 ) $ 238,495 $ (2,198 ) December 31, 2018 Less Than 12 Months 12 Months or Longer Total Fair Value Gross Losses Fair Value Gross Losses Fair Value Gross (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 $ 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 $ 138,339 $ (1,277 ) $ 426,784 $ (22,754 ) $ 565,123 $ (24,031 ) At September 30, 2019 and December 31, 2018, investment securities having a carrying value of approximately $1.46 billion and $1.66 billion, respectively, were pledged to secure public deposits, short and long-term borrowings, and for other purposes as required or permitted by law. The amortized cost and fair value of debt securities at September 30, 2019, by contractual maturity, are shown in the table below. Although mortgage-backed and CMO/REMIC securities have contractual maturities through 205 8 September 30, 2019 Available-for-sale Held-to-maturity Amortized Fair Value (Dollars in thousands) Due in one year or less $ 12,278 $ 12,426 $ 500 $ 500 Due after one year through five years 1,345,036 1,364,026 327,802 328,561 Due after five years through ten years 171,657 173,033 161,463 163,676 Due after ten years 20,435 20,921 214,188 219,154 Total investment securities $ 1,549,406 $ 1,570,406 $ 703,953 $ 711,891 The investment in FHLB stock is periodically evaluated for impairment based on, among other things, the capital adequacy of the FHLB and its overall financial condition. impairment losses have been recorded through September 30, 2019.

Loans and Lease Finance Receiva

Loans and Lease Finance Receivables and Allowance for Loan Losses	9 Months Ended
	Sep. 30, 2019
Receivables [Abstract]
Loans and Lease Finance Receivables and Allowance for Loan Losses	6. LOANS AND LEASE FINANCE RECEIVABLES AND ALLOWANCE FOR LOAN LOSSES Prior to April 1, 2019, our loans and lease finance receivables consisted of purchase credit impaired (“PCI”) loans associated with the acquisition of San Joaquin Bank (SJB”) on October 16, 2009, and loans and lease finance receivables excluding PCI loans (“Non-PCI Summary of Significant Accounting Policies 10-K Beginning with June Non-PCI The following table provides a summary of the Company’s total loans and lease finance receivables by type. September 30, 2019 December 31, 2018 Total Loans Non-PCI PCI Loans Total Loans (Dollars in thousands) Commercial and industrial $ 921,678 $ 1,002,209 $ 519 1,002,728 SBA 319,571 350,043 1,258 351,301 Real estate: Commercial real estate 5,375,668 5,394,229 14,407 5,408,636 Construction 119,931 122,782 - 122,782 SFR mortgage 278,644 296,504 145 296,649 Dairy & livestock and agribusiness 311,229 393,843 700 394,543 Municipal lease finance receivables 54,468 64,186 - 64,186 Consumer and other loans 117,128 128,429 185 128,614 Gross loans 7,498,317 7,752,225 17,214 7,769,439 Less: Deferred loan fees, net (3,866 ) (4,828 ) - (4,828 ) Gross loans, net of deferred loan fees 7,494,451 7,747,397 17,214 7,764,611 Less: Allowance for loan losses (68,672 ) (63,409 ) (204 ) (63,613 ) Total loans and lease finance receivables $ 7,425,779 $ 7,683,988 $ 17,010 $ 7,700,998 As of September 30, 2019, 77.01% of the Company’s total gross loan portfolio consisted of real estate loans, with commercial real estate loans representing total loans At September 30, 2019, the Company held approximately $3.83 billion of total fixed rate loans. At September 30, 2019 and December 31, 2018, loans totaling $5.91 billion and $5.71 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 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, according to our internal risk ratings as of dates September 30, 2019 Pass Special Mention Substandard (1) Doubtful & Loss Total (Dollars in thousands) Commercial and industrial $ 892,865 $ 24,456 $ 4,357 $ - $ 921,678 SBA 296,127 13,764 9,680 - 319,571 Real estate: Commercial real estate Owner occupied 1,987,168 83,305 22,618 - 2,093,091 Non-owner 3,269,174 12,663 740 - 3,282,577 Construction Speculative 105,636 - - - 105,636 Non-speculative 14,295 - - - 14,295 SFR mortgage 275,069 2,053 1,522 - 278,644 Dairy & livestock and agribusiness 247,554 43,585 20,090 - 311,229 Municipal lease finance receivables 53,998 470 - - 54,468 Consumer and other loans 115,242 845 1,041 - 117,128 Total gross loans $ 7,257,128 $ 181,141 $ 60,048 $ - $ 7,498,317 (1) Includes $18.0 million of classified loans acquired from CB in the third quarter of 2018. December 31, 2018 (1) Pass Special Substandard (2) Doubtful & 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 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 $ 7,519,101 $ 182,207 50,917 $ - $ 7,752,225 (1) Excludes PCI loans of $17.2 million as of December 31, 2018, of which $15.8 million were rated pass, $1.2 million were rated special mention, $224,000 were rated substandard, and zero were rated doubtful & loss. (2) Includes $19.0 million of classified loans acquired from CB in the third quarter of 2018. Allowance for Loan Losses (“ALLL”) The Bank’s Audit and Director Loan Committees provide Board oversight of the ALL L 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 10-K Management believes that the ALLL was appropriate at September 30, 2019 and December 31, 2018. 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 For the Three Months Ended September 30, 2019 Ending Balance 2019 Charge-offs Recoveries Provision for (Recapture of) Ending Balance (Dollars in thousands) Commercial and industrial $ 7,857 $ - $ 94 $ 287 $ 8,238 SBA 1,119 (65 ) - 412 1,466 Real estate: Commercial real estate 48,287 - - 624 48,911 Construction 871 - 3 55 929 SFR mortgage 2,323 - 8 44 2,375 Dairy & livestock and agribusiness 5,341 - - 88 5,429 Municipal lease finance receivables 726 - - (64 ) 662 Consumer and other loans 608 (3 ) 3 54 662 Total allowance for loan losses $ 67,132 $ (68 ) $ 108 $ 1,500 $ 68,672 For the Three Months Ended September 30, 2018 Ending Balance June 30, 2018 Charge-offs Recoveries Provision for (Recapture of) Ending Balance September 30, 2018 (Dollars in thousands) Commercial and industrial 6,970 $ - $ 44 $ 477 $ 7,491 SBA 841 (257 ) 5 369 958 Real estate: Commercial real estate 42,597 - - (1,056 ) 41,541 Construction 1,003 - 15 115 1,133 SFR mortgage 2,155 - - (30 ) 2,125 Dairy & livestock and 4,351 - -​​​​​​​ 673 5,024 Municipal lease finance 808 - - 7 815 Consumer and other loans 642 (1 ) 118 (44 ) 715 PCI loans 216 - - (11 ) 205 Total allowance for loan $ 59,583 $ (258 ) $ 182 $ 500 $ 60,007 For the Nine Months Ended September 30, 2019 Ending Balance December 31, Charge-offs Recoveries Provision for (Recapture of) Loan Losses Ending Balance September 30, 2019 (Dollars in thousands) Commercial and industrial $ 7,528 $ (48 ) $ 253 $ 505 $ 8,238 SBA 1,078 (295 ) 9 674 1,466 Real estate: Commercial real estate 45,097 - - 3,814 48,911 Construction 981 - 9 (61 ) 929 SFR mortgage 2,197 - 191 (13 ) 2,375 Dairy & livestock and 5,225 (78 ) 19 263 5,429 Municipal lease finance receivables 775 - - (113 ) 662 Consumer and other loans 732 (7 ) 6 (69 ) 662 Total allowance for loan $ 63,613 $ (428 ) $ 487 $ 5,000 $ 68,672 For the Nine Months Ended September 30, 2018 Ending Balance Charge-offs Recoveries (Recapture of) Ending Balance (Dollars in thousands) Commercial and industrial $ 7,280 $ - $ 81 $ 130 $ 7,491 SBA 869 (257 ) 15 331 958 Real estate: Commercial real estate 41,722 - - (181 ) 41,541 Construction 984 - 1,945 (1,796 ) 1,133 SFR mortgage 2,112 - - 13 2,125 Dairy & livestock and 4,647 - 19 358 5,024 Municipal lease finance receivables 851 - - (36 ) 815 Consumer and other loans 753 (10 ) 129 (157 ) 715 PCI loans 367 - - (162 ) 205 Total allowance for loan losses $ 59,585 $ (267 ) $ 2,189 $ (1,500 ) $ 60,007 The following tables present the recorded investment in loans held-for-investment September 30, 2019 Recorded Investment in Loans Allowance for Loan Losses Individually Evaluated for Impairment Collectively Evaluated for Impairment Individually Evaluated for Impairment Collectively Evaluated for Impairment (Dollars in thousands) Commercial and industrial $ 1,638 $ 920,040 $ 254 $ 7,984 SBA 3,248 316,323 286 1,180 Real estate: Commercial real estate 1,500 5,374,168 - 48,911 Construction - 119,931 - 929 SFR mortgage 3,009 275,635 - 2,375 Dairy & livestock and agribusiness - 311,229 - 5,429 Municipal lease finance receivables - 54,468 - 662 Consumer and other loans 385 116,743 - 662 Total $ 9,780 $ 7,488,537 $ 540 $ 68,132 September 30, 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 Collectively Evaluated for Acquired with Deterioriated Credit Quality (Dollars in thousands) Commercial and industrial $ 3,168 $ 1,018,738 $ - $ - $ 7,491 $ - SBA 3,593 353,459 - - 958 - Real estate: Commercial real estate 6,348 5,262,392 - - 41,541 - Construction - 123,274 - - 1,133 - SFR mortgage 5,492 287,024 - 13 2,112 - Dairy & livestock and agribusiness 775 303,823 - - 5,024 - Municipal lease finance receivables - 67,581 - - 815 - Consumer and other loans 807 133,989 - 70 645 - PCI loans - - 17,260 - - 205 Total $ 20,183 $ 7,550,280 $ 17,260 $ 83 $ 59,719 $ 205 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 10-K 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 of these concessions, restructured loans are classified as impaired. Impairment reserves on non-collateral 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 by type of loans as of date September 30, 2019 30-59 60-89 Nonaccrual (4) Current Total Loans and Financing (Dollars in thousands) Commercial and industrial $ 756 $ - $ 756 $ 1,550 $ 919,372 $ 921,678 SBA - 303 303 2,706 316,562 319,571 Real estate: Commercial real estate Owner occupied - - - 494 2,092,597 2,093,091 Non-owner 368 - 368 589 3,281,620 3,282,577 Construction Speculative (2) - - - - 105,636 105,636 Non-speculative - - - - 14,295 14,295 - - - 888 277,756 278,644 Dairy & livestock and - - - - 311,229 311,229 Municipal lease finance - - - - 54,468 54,468 Consumer and other loans - - - 385 116,743 117,128 Total gross loans $ 1,124 $ 303 $ 1,427 $ 6,612 $ 7,490,278 $ 7,498,317 (1) As of September 30-59 60-89 , (2) Speculative construction loans are generally for properties where there is no identified buyer or renter. (3) Includes $4.5 million of nonaccrual loans acquired from CB in the third quarter of 2018. (4) Excludes $1.6 million of guaranteed portion of nonaccrual SBA loans that are in process of collection. December 31, 2018 (1) 30-59 60-89 Total Past Due Nonaccrual Current Total Loans and Financing (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 - - - 5,479 3,270,760 3,276,239 Construction Speculative (3) - - - - 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 $ 4,431 $ 859 $ 5,290 $ 19,951 $ 7,726,984 $ 7,752,225 (1) Excludes PCI loans. (2) As of December 31, 2018, $2.3 million of nonaccruing loans were current, $33,000 were 30-59 60-89 (3) Speculative construction loans are generally for properties where there is no identified buyer or renter. (4) Includes $12.3 million of nonaccrual loans acquired from CB in the third quarter of 2018. Impaired Loans At September 30, 2019, the Company had impaired loans of $9.8 million. Impaired loans included $2.7 million of nonaccrual Small Business Administration (“SBA”) loans, $1.6 million of nonaccrual commercial and industrial loans, $1.1 million of nonaccrual commercial real estate loans, $888,000 of nonaccrual single-family residential (“SFR”) mortgage loans, and $385,000 of nonaccrual consumer and other loans. These impaired loans included $3.4 million of loans whose terms were modified in a troubled debt restructuring, of which $249,000 were classified as nonaccrual. The remaining balance of $3.2 million consisted of 12 loans performing according to the restructured terms. The impaired loans had a specific allowance of $540,000 at September 30, 2019. At December 31, 2018, the Company had classified as impaired, loans with a balance of $23.5 million with a related allowance of $561,000. The following tables present information ​​​​​​​for held-for-investment As of and For the Nine Months Ended September 30, 2019 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized (Dollars in thousands) With no related allowance recorded: Commercial and industrial $ 1,382 $ 1,537 $ - $ 1,560 $ 4 SBA 2,447 3,554 - 2,606 31 Real estate: Commercial real estate Owner occupied 494 614 - 508 - Non-owner 1,006 1,190 - 1,052 21 Construction Speculative - - - - - Non-speculative - - - - - SFR mortgage 3,009 3,338 - 3,059 62 Dairy & livestock and agribusiness - - - - - Municipal lease finance receivables - - - - - Consumer and other loans 385 516 - 401 - Total 8,723 10,749 - 9,186 118 With a related allowance recorded: Commercial and industrial 256 345 254 829 - SBA 801 816 286 816 - Real estate: Commercial real estate Owner occupied - - - - - Non-owner - - - - - Construction Speculative - - - - - Non-speculative - - - - - SFR mortgage - - - - - Dairy & livestock and agribusiness - - - - - Municipal lease finance receivables - - - - - Consumer and other loans - - - - - Total 1,057 1,161 540 1,645 - Total impaired loans $ 9,780 $ 11,910 $ 540 $ 10,831 $ 118 As of and For the Nine Months Ended September 30, 2018 (1) Recorded Investment Unpaid Balance Related Allowance Average Investment Interest Recognized (Dollars in thousands) With no related allowance recorded: Commercial and industrial $ 3,168 $ 3,829 $ - $ 3,439 $ 6 SBA 3,593 5,779 - 4,457 34 Real estate: Commercial real estate Owner occupied 615 726 - 644 - Non-owner 5,733 6,385 - 5,904 24 Construction Speculative - - - - - Non-speculative - - - - - SFR mortgage 5,479 6,449 - 5,679 59 Dairy & livestock and agribusiness 775 1,091 - 808 - Municipal lease finance receivables - - - - - Consumer and other loans 737 1,025 - 867 - Total 20,100 25,284 - 21,798 123 With a related allowance recorded: Commercial and industrial - - - - - SBA - - - - - Real estate: Commercial real estate Owner occupied - - - - - Non-owner - - - - - Construction Speculative - - - - - Non-speculative - - - - - SFR mortgage 13 13 13 13 - Dairy & livestock and agribusiness - - - - - Municipal lease finance receivables - - - - - Consumer and other loans 70 101 70 85 - Total 83 114 83 98 - Total impaired loans $ 20,183 $ 25,398 $ 83 $ 21,896 $ 123 (1) Excludes PCI loans. As of December 31, 2018 (1) Recorded Unpaid Related (Dollars in thousands) With no related allowance recorded: Commercial and industrial $ 7,436 $ 11,457 $ - SBA 3,467 5,746 - Real estate: Commercial real estate Owner occupied 589 705 - Non-owner 2,808 4,324 - Construction Speculative - - - Non-speculative - - - SFR mortgage 5,349 6,270 - Dairy & livestock and agribusiness - - - Municipal lease finance receivables - - - Consumer and other loans 418 526 - Total 20,067 29,028 - With a related allowance recorded: Commercial and industrial 189 191 3 SBA - - - Real estate: Commercial real estate Owner occupied - - - Non-owner 3,143 3,144 478 Construction Speculative - - - Non-speculative - - - SFR mortgage - - - Dairy & livestock and agribusiness 78 78 12 Municipal lease finance receivables - - - Consumer and other loans 68 100 68 Total 3,478 3,513 561 Total impaired loans $ 23,545 $ 32,541 $ 561 (1) Excludes PCI loans. The Company recognizes the charge-off charge-off non-collateral Reserve for Unfunded Loan Commitments The allowance for off-balance off-balance as i Troubled Debt Restructurings (“TDRs”) Loans that are reported as TDRs are considered impaired and charge-off Summary of Significant Accounting Policies 10-K As of September 30, 2019, there were $3.4 million of loans classified as a TDR, of which $3.2 million were performing and $249,000 were nonperforming. 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 September 30, 2019, performing TDRs were comprised of eight SFR mortgage loans of $2.1 million, one SBA loan of $542,000, one commercial real estate loan of $417,000, and two commercial and industrial loans of $88,000. 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 zero and $490,000 of specific allowance to TDRs as of September 30, 2019 and December 31, 2018, respectively. The following table provides a summary of the activity related to TDRs for the periods presented . For the Three Months Ended September 30, For the Nine Months Ended September 30, (Dollars in thousands) (Dollars in thousands) Performing TDRs: Beginning balance $ 3,219 $ 4,530 $ 3,594 $ 4,809 New modifications - - - 311 Payoffs/payments, net and other (51 ) (777 ) (426 ) (1,367 ) TDRs returned to accrual status - - - - TDRs placed on nonaccrual status - - - - Ending balance $ 3,168 $ 3,753 $ 3,168 $ 3,753 Nonperforming TDRs: Beginning balance $ 263 $ 3,892 $ 3,509 $ 4,200 New modifications - 278 - 316 Charge-offs - - (78 ) - Transfer to OREO - - (2,275 ) - Payoffs/payments, net and other (14 ) (650 ) (907 ) (996 ) TDRs returned to accrual status - - - - TDRs placed on nonaccrual status - - - - Ending balance $ 249 $ 3,520 $ 249 $ 3,520 Total TDRs $ 3,417 $ 7,273 $ 3,417 $ 7,273 (1) Excludes PCI loans. There were no loans that were modified as TDRs for The following tables summarize loans modified as TDRs for the periods presented. Modifications (1) For the Three Months Ended September 30, 201 8 Outstanding Recorded Investment Outstanding Financial Effect (Dollars in thousands) Commercial and industrial: Interest rate reduction - $ - - - - Change in amortization period - - - - - Real estate: Commercial real estate: Owner occupied Interest rate reduction - - - - - Change in amortization period - - - - - Non-owner Interest rate reduction - - - - - Change in amortization period - - - - - SFR mortgage: Interest rate reduction - - - - - Change in amortization period - - - - - Consumer: Interest rate reduction - - - - - Change in amortization period 1 278 278 272 - Total loans 1 $ 278 $ 278 $ 272 $ - For the Nine Months Ended September 30, 2018 (2) Number of Pre-Modification Post-Modification Investment Outstanding Financial Effect (Dollars in thousands) Commercial and industrial: Interest rate reduction - $ - $ - $ - $ - Change in amortization period or maturity 1 38 38 27 - Real estate: Commercial real estate: Owner occupied Interest rate reduction - - - - - Change in amortization period or maturity - - - - - Non-owner Interest rate reduction - - - - - Change in amortization period or maturity - - - - - SFR mortgage: Interest rate reduction - - - - - Change in amortization period or maturity 1 311 311 304 - Consumer: Interest rate reduction - - - - - Change in amortization period or maturity 1 278 278 272 - Total loans 3 $ 627 $ 627 $ 603 $ - (1) The tables above exclude modified loans that were paid off prior to the end of the period. (2) Excludes PCI loans. (3) Financial effects resulting from modifications represent charge-offs and ​​​​​​​specific allowance recorded at modification date. There were loans that were previously modified as a TDR within the previous 12 months that subsequently defaulted during the three and nine months ended September 30, 2019 and 2018.

Earnings Per Share Reconciliati

Earnings Per Share Reconciliation	9 Months Ended
	Sep. 30, 2019
Earnings Per Share [Abstract]
Earnings Per Share Reconciliation	7. 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 three and nine months ended September 30, 2019, shares deemed to be antidilutive, and thus excluded from the computation of earnings per common share, were 240,000 and 184,000, respectively. For the three and nine months ended September 30, 2018, shares deemed to be antidilutive, and thus excluded from the computation of earnings per common share were 56,000 and 50,000, 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 Three Months S eptember For the Nine Ended September 2019 2018 2019 2018 (In thousands, except per share amounts) Earnings per common share: Net earnings $ 50,423 $ 38,558 $ 156,546 $ 108,844 Less: Net earnings allocated to restricted stock 116 96 390 298 Net earnings allocated to common shareholders $ 50,307 $ 38,462 $ 156,156 $ 108,546 Weighted average shares outstanding 139,824 126,574 139,730 115,533 Basic earnings per common share $ 0.36 $ 0.30 $ 1.12 $ 0.94 Diluted earnings per common share: Net income allocated to common shareholders 50,307 38,462 156,156 108,546 Weighted average shares outstanding 139,824 126,574 139,730 115,533 Incremental shares from assumed exercise of outstanding options 151 363 217 397 Diluted weighted average shares outstanding 139,975 126,937 139,947 115,930 Diluted earnings per common share $ 0.36 $ 0.30 $ 1.12 $ 0.94

Fair Value Information

Fair Value Information	9 Months Ended
	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Fair Value Information	8. 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 September 30, 2019. The fair value hierarchy prioritizes the inputs to valuation techniques used to measure fair value into three broad levels (Level 1, Level 2 and Level 3). • Level 1 • Level 2 - • Level 3 There were no transfers in and out of Level 1 and Level 2 during the nine months ended September 30, 2019 and 2018. 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 as of dates Carrying Value at Quoted Prices in Significant Other Significant (Dollars in thousands) Description of assets Investment securities - AFS: Residential mortgage-backed securities $ 1,146,159 $ - $ 1,146,159 $ - CMO/REMIC - residential 382,928 - 382,928 - Municipal bonds 40,487 - 40,487 - Other securities 832 - 832 - 1,570,406 - 1,570,406 - Interest rate swaps 16,180 - 16,180 - Total assets $ 1,586,586 $ - $ 1,586,586 $ - Description of liability Interest rate swaps $ 16,180 $ - $ 16,180 $ - Total liabilities $ 16,180 $ - $ 16,180 $ - Carrying Value at Quoted Prices in Significant Other Significant (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 $ - Assets and Liabilities Measured at Fair Value on a Non-Recurring We may be required to measure certain assets at fair value on a non-recurring For assets measured at fair value on a non-recurring Carrying Value at Quoted Prices in Active Markets for (Level 1) Significant Other Significant (Level 3) Total Losses (Dollars in thousands) Description of assets Impaired loans, excluding Commercial and industrial $ 256 $ - $ - $ 256 $ 254 SBA 938 - - 938 516 Real estate: Commercial real estate - - - - - Construction - - - - - SFR mortgage - - - - - Dairy & livestock and agribusiness - - - - - Consumer and other loans - - - - - Other real estate owned 444 - - 444 64 Asset held-for-sale - - - - - Total assets $ 1,638 $ - $ - $ 1,638 $ 834 Carrying Value at Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other (Level 2) Significant (Level 3) Total Losses For the Year Ended December 31, 2018 (Dollars in thousands) Description of assets Impaired loans, excluding 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 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 September 30, 2019 and December 31, 2018, respectively. The use of different market assumptions and/or estimation methodologies may have a material effect on the estimated fair value amounts. September 30, 2019 Estimated Fair Value Carrying Level 1 Level 2 Level 3 Total (Dollars in thousands) Assets Total cash and cash equivalents $ 437,548 $ 437,548 $ - $ - $ 437,548 Interest-earning balances due from depository institutions 5,673 - 5,793 - 5,793 Investment securities available-for-sale 1,570,406 - 1,570,406 - 1,570,406 Investment securities held-to-maturity 703,953 - 711,891 - 711,891 Total loans, net of allowance for loan losses 7,425,779 - - 7,385,760 7,385,760 Swaps 16,180 - 16,180 - 16,180 Liabilities Deposits: Interest-bearing $ 3,409,226 $ - $ 3,407,573 $ - $ 3,407,573 Borrowings 412,764 - 412,372 - 412,372 Junior subordinated debentures 25,774 - - 20,266 20,266 Swaps 16,180 - 16,180 - 16,180 December 31, 2018 Estimated Fair Value Carrying 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 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 The fair value estimates presented herein are based on ​​​​​​​pertinent information available to management as of September 30, 2019 and December 31, 2018. 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 Financial Instrument

Derivative Financial Instruments	9 Months Ended
	Sep. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	9. 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 September 30, 2019, the Bank has entered into 82 interest-rate swap agreements with customers. The Bank then entered into identical offsetting swaps with a counterparty. 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. 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. As a result of the Bank exceeding $10 billion in assets, federal regulations require the Bank, beginning in January 2019, to clear most interest rate swaps through a clearing house (“centrally cleared”). These instruments contain language outlining collateral pledging requirements for each counterparty, in which collateral must be posted if market value exceeds certain agreed upon threshold limits. Cash or securities are pledged as collateral. Our interest rate swap derivatives are subject to a master netting arrangement with our counterparties. None of our derivative assets and liabilities are offset in the Company’s condensed consolidated 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 September 30, 2019 and December 31, 2018, the total notional amount of the Company’s swaps was $227.2 million, and $195.4 million, respectively. The location of the asset and liability, and their respective fair values , September 30, 2019 Asset Derivatives Liability Derivatives Balance Sheet Fair Balance Sheet Fair (Dollars in thousands) Derivatives not designated as hedging instruments: Interest rate swaps Other assets $ 16,180 Other liabilities $ 16,180 Total derivatives $ 16,180 $ 16,180 December 31, 2018 Asset Derivatives Liability Derivatives Balance Sheet Fair Balance Sheet Fair (Dollars in thousands) Derivatives not designated as hedging instruments: Interest rate swaps Other assets $ 1,938 Other liabilities $ 1,938 Total derivatives $ 1,938 $ 1,938 The Effect of Derivative Financial Instruments on the Condensed Consolidated Statements of Earnings The following table summarizes the effect of derivative financial instruments on the condensed consolidated statement of earnings for the periods presented. Derivatives Not Designated as Instruments Location of Gain Recognized in Instruments Amount of Gain Recognized in Income on Derivative Instruments For the Three Months Ended For the Nine Months Ended 2019 2018 2019 2018 (Dollars in thousands) Interest rate swaps Other income $ 378 $ 73 $ 1,135 $ 340 Total $ 378 $ 73 $ 1,135 $ 340

Other Comprehensive Income

Other Comprehensive Income	9 Months Ended
	Sep. 30, 2019
Equity [Abstract]
Other Comprehensive Income	10. OTHER COMPREHENSIVE INCOME The table below provides a summary of the components of other comprehensive income (“OCI”) for the periods presented. For the Three Months Ended September 30, 2019 2018 Before-tax Tax effect After-tax Before-tax Tax effect After-tax (Dollars in thousands) Investment securities: Net change in fair value recorded in $ 5,672 $ (1,677 ) $ 3,995 $ (10,235 ) $ 3,025 $ (7,210 ) Net realized gain reclassified into earnings (1) (5) 1 (4 ) - - - Amortization of unrealized losses on securities available-for-sale held-to-maturity (249 ) 74 (175 ) (152) 45 (107 ) Net change $ 5,418 $ (1,602 ) $ 3,816 $ (10,387) $ 3,070 $ (7,317 ) For the Nine Months Ended September 30, 2019 2018 Before-tax Tax effect After-tax Before-tax Tax effect After-tax (Dollars in thousands) Investment securities: Net change in fair value recorded in $ 44,586 $ (13,181 ) $ 31,405 $ (47,346 ) $ 13,997 $ (33,349 ) Net realized gain reclassified into earnings (1) (5 ) 1 (4 ) - - - Amortization of unrealized losses on securities available-for-sale held-to-maturity (1,450 ) 429 (1,021 ) (1,809 ) 535 (1,274 ) Net change $ 43,131 $ (12,751 ) $ 30,380 $ (49,155 ) $ 14,532 $ (34,623 ) (1) Included in other noninterest income.

Balance Sheet Offsetting

Balance Sheet Offsetting	9 Months Ended
	Sep. 30, 2019
Text Block [Abstract]
Balance Sheet Offsetting	11. 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 t o the Company’s condensed consolidated balances. Gross Amounts Recognized in the Condensed Consolidated Balance Sheets Gross Amounts Offset in the Condensed Consolidated Balance Sheets Net Amounts Presented in the Condensed Consolidated Balance Sheets Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets Net Amount Financial Collateral (Dollars in thousands) September 30, Financial assets: Derivatives not designated as $ 16,180 $ - $ - $ 16,180 $ - $ 16,180 Total $ 16,180 $ - $ - $ 16,180 $ - $ 16,180 Financial liabilities: Derivatives not designated as $ 16,182 $ (2 ) $ 16,180 $ 2 $ (22,335 ) $ (6,153 ) Repurchase agreements 407,850 - 407,850 - (419,465 ) (11,615 ) Total $ 424,032 $ (2 ) $ 424,030 $ 2 $ (441,800 ) $ (17,768 ) December 31, 2018 Financial assets: Derivatives not designated as $ 1,938 $ - $ - $ 1,938 $ - $ 1,938 Total $ 1,938 $ - $ - $ 1,938 $ - $ 1,938 Financial liabilities: Derivatives not designated as $ 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 ) $ $ $ ) $ (41,149 )

Leases

Leases	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Leases	12. LEASES The Company’s operating leases, where the Company is a lessee, include real estate, such as office space and banking centers. Lease expense for operating leases is recognized on a straight-line basis over the term of the lease and is reflected in the consolidated statement of earnings. While the Company has, as a lessor, certain equipment finance leases, such leases are not material to the Company’s consolidated financial statements. The following presents the components of lease costs and supplemental information related to leases as of September 30, 2019 and for the three and nine months ended September 30, 2019. As of September 30, 2019 (Dollars in thousands) Lease Assets and Liabilities ROU assets $ 17,340 Total lease liabilities 20,558 For the Three Months Ended For the Nine Months Ended September 30, 2019 (Dollars in thousands) Lease Cost Operating lease expense (1) $ 1,628 $ 5,634 Total lease expense $ 1,628 $ 5,634 (1) Other Information Cash paid for amounts included in the measurement of lease liabilities: Operating cash outflows from operating leases, net $ 1,640 $ 6,499 Lease Term and Discount Rate As of September 30, 2019 Weighted average remaining lease term (years) 4.26 Weighted average discount rate 3.46% The Company’s lease arrangements that have not yet commenced as of September 30, 2019 and the Company’s short-term lease costs and variable lease costs, for the three and nine months ended September 30, 2019 are not material to the consolidated financial statements. The future lease payments required for leases that have initial or remaining non-cancelable As of September 30, 2019 (Dollars in thousands) Year: 2019 (excluding the nine September $ 1,973 2020 6,941 2021 5,178 2022 4,005 2023 2,336 Thereafter 3,100 Total future lease payments 23,533 Less: Imputed interest (2,975 ) Present value of lease liabilities $ 20,558

Revenue Recognition

Revenue Recognition	9 Months Ended
	Sep. 30, 2019
Revenue from Contract with Customer [Abstract]
Revenue Recognition	13. REVENUE RECOGNITION On January 1, 2018, the Company adopted ASU No. 2014-09 Summary of Significant Accounting Policies Revenue Recognition 10-K in-scope The following presents noninterest income, segregated by revenue streams in-scope out-of-scope For the Three Months Ended September 30, For the Nine Months Months Ended September 30, 2019 2018 2019 2018 (Dollars in thousands) Noninterest income: In-scope Service charges on deposit accounts $ 4,833 $ 4,295 $ 15,039 $ 12,431 Trust and investment services 2,330 2,182 6,964 6,738 Bankcard services 637 875 2,614 2,637 Gain on OREO, net - - 129 3,540 Other 2,292 1,824 6,939 4,393 Noninterest Income (in-scope 10,092 9,176 31,685 29,739 Noninterest Income (out-of-scope 1,802 936 14,717 2,984 Total noninterest income $ 11,894 $ 10,112 $ 46,402 $ 32,723

Accounting policies (Policies)

Accounting policies (Policies)	9 Months Ended
	Sep. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Reclassification	Reclassification
Use of Estimates in the Preparation of Financial Statements	Use of Estimates in the Preparation of Financial Statements
Adoption of New Accounting Standard and Recent Accounting Pronouncements	Adoption of New Accounting Standards 2017-12, 2017-12 non-financial 2017-12 In June 2018, the FASB issued ASU No. 2018-07, 2018-07 re-measured 2018-07 In February 2016, FASB issued ASU No. 2016-02, . 2016-02 right-of-use 2018-10, , 2018-10 2016-02. In July 2018, the FASB issued ASU No. 2018-11, , 2016-02, non-lease 2018-11: non-lease 2016-02. Practical Expedients to Topic 842, Leases non-lease The Company’s leasing portfolio consists of real estate leases, which are used primarily for the banking operations of the Company. All leases in the current portfolio have been classified as operating leases, although this may change in the future. ROU assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the obligation to make lease payments arising from the lease. The adoption of this ASU during the first quarter of 2019 did not have a material impact on the Company’s consolidated financial statements. At adoption, the Company recognized a lease liability and a corresponding ROU asset of approximately $20 million on the consolidated balance sheet related to its future lease payments as a lessee under operating leases. See Note 13 — Leases Operating lease ROU assets and lease liabilities are included in other assets other liabilities Company’s Recent Accounting Pronouncements 2016-13, off-balance held-to-maturity 2016-13 We have determined a and based on and validate its In January 2017, the FASB issued ASU No. 2017-04, 2017-04 that In August 2018, the FASB issued ASU No. 2018-13, - 2018-13

Business Combinations (Tables)

Business Combinations (Tables)	9 Months Ended
	Sep. 30, 2019
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 2,738,100 Accrued interest receivable 7,916 Premises and equipment 14,632 BOLI 70,904 Core deposit intangible 52,200 Other assets 53,291 Total assets acquired 3,719,091 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 356,342 Goodwill $ 547,144
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 Three Months Ended Nine Months Ended September 30, 2018 (Dollars in thousands, except per share amounts) Total revenues (net interest income plus noninterest income) $ 120,467 $ 364,846 Net income $ 44,623 $ 138,274 Earnings per share - basic $ 0.32 $ 0.99 Earnings per share - diluted $ 0.32 $ 0.99

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2019
Investments, Debt and Equity Securities [Abstract]
Summary of Amortized Cost and Estimated Fair Value of Investment Securities	The amortized cost and estimated fair value of investment securities are summarized below. The majority of securities held are available-for-sale September 30, 2019 Amortized Gross Gain Gross Loss Fair Value Total Percent (Dollars in thousands) Investment securities available-for-sale: Residential mortgage-backed securities $ 1,127,395 $ 20,105 $ (1,341 ) $ 1,146,159 72.99 % CMO/REMIC - residential 381,615 1,649 (336 ) 382,928 24.38 % Municipal bonds 39,564 924 (1 ) 40,487 2.58 % Other securities 832 - - 832 0.05 % Total available-for-sale $ 1,549,406 $ 22,678 $ (1,678 ) $ 1,570,406 100.00 % Investment securities held-to-maturity: Government agency/GSE $ 123,917 $ 3,238 $ (170 ) $ 126,985 17.60 % Residential mortgage-backed securities 172,919 2,624 (3 ) 175,540 24.56 % CMO 204,263 76 (1,467 ) 202,872 29.02 % Municipal bonds 202,854 4,198 (558 ) 206,494 28.82 % Total held-to-maturity $ 703,953 $ 10,136 $ (2,198 ) $ 711,891 100.00 % December 31, 2018 Amortized Gross Gain Gross Loss Fair Value T (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 $ 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 $ 744,440 $ 1,128 $ (24,031 ) $ 721,537 100.00 %
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 Three Months Ended For the Nine Months Ended 2019 2018 2019 2018 (Dollars in thousands) Investment securities available-for-sale: Taxable $ 8,949 $ 11,126 $ 29,079 $ 33,861 Tax-advantaged 273 395 906 1,225 Total interest income from available-for-sale 9,222 11,521 29,985 35,086 Investment securities held-to-maturity: Taxable 2,883 2,961 8,725 8,887 Tax-advantaged 1,415 1,705 4,524 5,351 Total interest income from held-to-maturity 4,298 4,666 13,249 14,238 Total interest income from investment securities $ 13,520 $ 16,187 $ 43,234 $ 49,324 Approximately % of the total investment securities portfolio at September 30, 2019 represents securities issued by the U.S. government or U.S. government-sponsored enterprises, with the implied guarantee of payment of principal and interest.
Summary of Continuous Unrealized Loss Position of Securities	The tables below show the Company’s investment securities’ gross unrealized losses and fair value by investment category and length of time that individual securities have been in a continuous unrealized loss position at September 30, 2019 and December 31, 2018. Management has reviewed individual securities to determine whether a decline in fair value below the amortized cost basis is other-than-temporary. The unrealized losses on these securities were primarily attributed to changes in interest rates. The issuers of these securities have not, to our knowledge, evidenced any cause for default on these securities. These securities have fluctuated in value since their purchase dates as market interest i September 30, 2019 Less Than 12 Months 12 Months or Longer Total Fair Value Gross Losses Fair Value Gross Losses Fair Value Gross (Dollars in thousands) Investment securities available-for-sale: Residential mortgage-backed securities $ 2 $ - $ 127,904 $ (1,341 ) $ 127,906 $ (1,341 ) CMO/REMIC - residential 122,595 (156 ) 39,498 (180 ) 162,093 (336 ) Municipal bonds - - 564 (1 ) 564 (1 ) Total available-for-sale $ 122,597 $ (156 ) $ 167,966 $ (1,522 ) $ 290,563 $ (1,678 ) Investment securities held-to-maturity: Government agency/GSE $ - $ - $ 19,923 $ (170 ) $ 19,923 $ (170 ) Residential mortgage-backed securities 5,021 (3 ) - - 5,021 (3 ) CMO - - 178,297 (1,467 ) 178,297 (1,467 ) Municipal bonds 3,037 (5 ) 32,217 (553 ) 35,254 (558 ) Total held-to-maturity $ 8,058 $ (8 ) $ 230,437 $ (2,190 ) $ 238,495 $ (2,198 ) December 31, 2018 Less Than 12 Months 12 Months or Longer Total Fair Value Gross Losses Fair Value Gross Losses Fair Value Gross (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 $ 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 $ 138,339 $ (1,277 ) $ 426,784 $ (22,754 ) $ 565,123 $ (24,031 )
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. September 30, 2019 Available-for-sale Held-to-maturity Amortized Fair Value (Dollars in thousands) Due in one year or less $ 12,278 $ 12,426 $ 500 $ 500 Due after one year through five years 1,345,036 1,364,026 327,802 328,561 Due after five years through ten years 171,657 173,033 161,463 163,676 Due after ten years 20,435 20,921 214,188 219,154 Total investment securities $ 1,549,406 $ 1,570,406 $ 703,953 $ 711,891

Loans and Lease Finance Recei_2

Loans and Lease Finance Receivables and Allowance for Loan Losses (Tables)	9 Months Ended
	Sep. 30, 2019
Receivables [Abstract]
Summary of Components of Loans and Lease Finance Receivables, Excluding PCI Loans	The following table provides a summary of the Company’s total loans and lease finance receivables by type. September 30, 2019 December 31, 2018 Total Loans Non-PCI PCI Loans Total Loans (Dollars in thousands) Commercial and industrial $ 921,678 $ 1,002,209 $ 519 1,002,728 SBA 319,571 350,043 1,258 351,301 Real estate: Commercial real estate 5,375,668 5,394,229 14,407 5,408,636 Construction 119,931 122,782 - 122,782 SFR mortgage 278,644 296,504 145 296,649 Dairy & livestock and agribusiness 311,229 393,843 700 394,543 Municipal lease finance receivables 54,468 64,186 - 64,186 Consumer and other loans 117,128 128,429 185 128,614 Gross loans 7,498,317 7,752,225 17,214 7,769,439 Less: Deferred loan fees, net (3,866 ) (4,828 ) - (4,828 ) Gross loans, net of deferred loan fees 7,494,451 7,747,397 17,214 7,764,611 Less: Allowance for loan losses (68,672 ) (63,409 ) (204 ) (63,613 ) Total loans and lease finance receivables $ 7,425,779 $ 7,683,988 $ 17,010 $ 7,700,998
Summary of Loan, Excluding PCI Loans by Internal Risk Ratings	The following table summarizes loans by type, according to our internal risk ratings as of dates September 30, 2019 Pass Special Mention Substandard (1) Doubtful & Loss Total (Dollars in thousands) Commercial and industrial $ 892,865 $ 24,456 $ 4,357 $ - $ 921,678 SBA 296,127 13,764 9,680 - 319,571 Real estate: Commercial real estate Owner occupied 1,987,168 83,305 22,618 - 2,093,091 Non-owner 3,269,174 12,663 740 - 3,282,577 Construction Speculative 105,636 - - - 105,636 Non-speculative 14,295 - - - 14,295 SFR mortgage 275,069 2,053 1,522 - 278,644 Dairy & livestock and agribusiness 247,554 43,585 20,090 - 311,229 Municipal lease finance receivables 53,998 470 - - 54,468 Consumer and other loans 115,242 845 1,041 - 117,128 Total gross loans $ 7,257,128 $ 181,141 $ 60,048 $ - $ 7,498,317 (1) Includes $18.0 million of classified loans acquired from CB in the third quarter of 2018. December 31, 2018 (1) Pass Special Substandard (2) Doubtful & 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 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 $ 7,519,101 $ 182,207 50,917 $ - $ 7,752,225 (1) Excludes PCI loans of $17.2 million as of December 31, 2018, of which $15.8 million were rated pass, $1.2 million were rated special mention, $224,000 were rated substandard, and zero were rated doubtful & loss. (2) Includes $19.0 million of classified loans acquired from CB in the third quarter of 2018.
Schedule of Balance and Activity Related to Allowance for Loan Losses for Held-for-Investment Loans by Type	The following tables present the balance and activity related to the allowance for loan losses for held-for-investment For the Three Months Ended September 30, 2019 Ending Balance 2019 Charge-offs Recoveries Provision for (Recapture of) Ending Balance (Dollars in thousands) Commercial and industrial $ 7,857 $ - $ 94 $ 287 $ 8,238 SBA 1,119 (65 ) - 412 1,466 Real estate: Commercial real estate 48,287 - - 624 48,911 Construction 871 - 3 55 929 SFR mortgage 2,323 - 8 44 2,375 Dairy & livestock and agribusiness 5,341 - - 88 5,429 Municipal lease finance receivables 726 - - (64 ) 662 Consumer and other loans 608 (3 ) 3 54 662 Total allowance for loan losses $ 67,132 $ (68 ) $ 108 $ 1,500 $ 68,672 For the Three Months Ended September 30, 2018 Ending Balance June 30, 2018 Charge-offs Recoveries Provision for (Recapture of) Ending Balance September 30, 2018 (Dollars in thousands) Commercial and industrial 6,970 $ - $ 44 $ 477 $ 7,491 SBA 841 (257 ) 5 369 958 Real estate: Commercial real estate 42,597 - - (1,056 ) 41,541 Construction 1,003 - 15 115 1,133 SFR mortgage 2,155 - - (30 ) 2,125 Dairy & livestock and 4,351 - -​​​​​​​ 673 5,024 Municipal lease finance 808 - - 7 815 Consumer and other loans 642 (1 ) 118 (44 ) 715 PCI loans 216 - - (11 ) 205 Total allowance for loan $ 59,583 $ (258 ) $ 182 $ 500 $ 60,007 For the Nine Months Ended September 30, 2019 Ending Balance December 31, Charge-offs Recoveries Provision for (Recapture of) Loan Losses Ending Balance September 30, 2019 (Dollars in thousands) Commercial and industrial $ 7,528 $ (48 ) $ 253 $ 505 $ 8,238 SBA 1,078 (295 ) 9 674 1,466 Real estate: Commercial real estate 45,097 - - 3,814 48,911 Construction 981 - 9 (61 ) 929 SFR mortgage 2,197 - 191 (13 ) 2,375 Dairy & livestock and 5,225 (78 ) 19 263 5,429 Municipal lease finance receivables 775 - - (113 ) 662 Consumer and other loans 732 (7 ) 6 (69 ) 662 Total allowance for loan $ 63,613 $ (428 ) $ 487 $ 5,000 $ 68,672 For the Nine Months Ended September 30, 2018 Ending Balance Charge-offs Recoveries (Recapture of) Ending Balance (Dollars in thousands) Commercial and industrial $ 7,280 $ - $ 81 $ 130 $ 7,491 SBA 869 (257 ) 15 331 958 Real estate: Commercial real estate 41,722 - - (181 ) 41,541 Construction 984 - 1,945 (1,796 ) 1,133 SFR mortgage 2,112 - - 13 2,125 Dairy & livestock and 4,647 - 19 358 5,024 Municipal lease finance receivables 851 - - (36 ) 815 Consumer and other loans 753 (10 ) 129 (157 ) 715 PCI loans 367 - - (162 ) 205 Total allowance for loan losses $ 59,585 $ (267 ) $ 2,189 $ (1,500 ) $ 60,007
Schedule of Recorded Investment in Loans Held-for-Investment and Related Allowance for Loan Losses by Loan Type	September 30, 2019 Recorded Investment in Loans Allowance for Loan Losses Individually Evaluated for Impairment Collectively Evaluated for Impairment Individually Evaluated for Impairment Collectively Evaluated for Impairment (Dollars in thousands) Commercial and industrial $ 1,638 $ 920,040 $ 254 $ 7,984 SBA 3,248 316,323 286 1,180 Real estate: Commercial real estate 1,500 5,374,168 - 48,911 Construction - 119,931 - 929 SFR mortgage 3,009 275,635 - 2,375 Dairy & livestock and agribusiness - 311,229 - 5,429 Municipal lease finance receivables - 54,468 - 662 Consumer and other loans 385 116,743 - 662 Total $ 9,780 $ 7,488,537 $ 540 $ 68,132 September 30, 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 Collectively Evaluated for Acquired with Deterioriated Credit Quality (Dollars in thousands) Commercial and industrial $ 3,168 $ 1,018,738 $ - $ - $ 7,491 $ - SBA 3,593 353,459 - - 958 - Real estate: Commercial real estate 6,348 5,262,392 - - 41,541 - Construction - 123,274 - - 1,133 - SFR mortgage 5,492 287,024 - 13 2,112 - Dairy & livestock and agribusiness 775 303,823 - - 5,024 - Municipal lease finance receivables - 67,581 - - 815 - Consumer and other loans 807 133,989 - 70 645 - PCI loans - - 17,260 - - 205 Total $ 20,183 $ 7,550,280 $ 17,260 $ 83 $ 59,719 $ 205
Schedule of Recorded Investment in, and Aging of, Past Due and Nonaccrual Loans, Excluding PCI Loans by Class of Loans	September 30, 2019 30-59 60-89 Nonaccrual (4) Current Total Loans and Financing (Dollars in thousands) Commercial and industrial $ 756 $ - $ 756 $ 1,550 $ 919,372 $ 921,678 SBA - 303 303 2,706 316,562 319,571 Real estate: Commercial real estate Owner occupied - - - 494 2,092,597 2,093,091 Non-owner 368 - 368 589 3,281,620 3,282,577 Construction Speculative (2) - - - - 105,636 105,636 Non-speculative - - - - 14,295 14,295 - - - 888 277,756 278,644 Dairy & livestock and - - - - 311,229 311,229 Municipal lease finance - - - - 54,468 54,468 Consumer and other loans - - - 385 116,743 117,128 Total gross loans $ 1,124 $ 303 $ 1,427 $ 6,612 $ 7,490,278 $ 7,498,317 (1) As of September 30-59 60-89 , (2) Speculative construction loans are generally for properties where there is no identified buyer or renter. (3) Includes $4.5 million of nonaccrual loans acquired from CB in the third quarter of 2018. (4) Excludes $1.6 million of guaranteed portion of nonaccrual SBA loans that are in process of collection. December 31, 2018 (1) 30-59 60-89 Total Past Due Nonaccrual Current Total Loans and Financing (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 - - - 5,479 3,270,760 3,276,239 Construction Speculative (3) - - - - 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 $ 4,431 $ 859 $ 5,290 $ 19,951 $ 7,726,984 $ 7,752,225 (1) Excludes PCI loans. (2) As of December 31, 2018, $2.3 million of nonaccruing loans were current, $33,000 were 30-59 60-89 (3) Speculative construction loans are generally for properties where there is no identified buyer or renter. (4) Includes $12.3 million of nonaccrual loans acquired from CB in the third quarter of 2018. As of and For the Nine Months Ended September 30, 2018 (1) Recorded Investment Unpaid Balance Related Allowance Average Investment Interest Recognized (Dollars in thousands) With no related allowance recorded: Commercial and industrial $ 3,168 $ 3,829 $ - $ 3,439 $ 6 SBA 3,593 5,779 - 4,457 34 Real estate: Commercial real estate Owner occupied 615 726 - 644 - Non-owner 5,733 6,385 - 5,904 24 Construction Speculative - - - - - Non-speculative - - - - - SFR mortgage 5,479 6,449 - 5,679 59 Dairy & livestock and agribusiness 775 1,091 - 808 - Municipal lease finance receivables - - - - - Consumer and other loans 737 1,025 - 867 - Total 20,100 25,284 - 21,798 123 With a related allowance recorded: Commercial and industrial - - - - - SBA - - - - - Real estate: Commercial real estate Owner occupied - - - - - Non-owner - - - - - Construction Speculative - - - - - Non-speculative - - - - - SFR mortgage 13 13 13 13 - Dairy & livestock and agribusiness - - - - - Municipal lease finance receivables - - - - - Consumer and other loans 70 101 70 85 - Total 83 114 83 98 - Total impaired loans $ 20,183 $ 25,398 $ 83 $ 21,896 $ 123 (1) Excludes PCI loans.
Schedule of Held-for-Investment Loans, Individually Evaluated for Impairment by Class of Loans	As of and For the Nine Months Ended September 30, 2019 Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized (Dollars in thousands) With no related allowance recorded: Commercial and industrial $ 1,382 $ 1,537 $ - $ 1,560 $ 4 SBA 2,447 3,554 - 2,606 31 Real estate: Commercial real estate Owner occupied 494 614 - 508 - Non-owner 1,006 1,190 - 1,052 21 Construction Speculative - - - - - Non-speculative - - - - - SFR mortgage 3,009 3,338 - 3,059 62 Dairy & livestock and agribusiness - - - - - Municipal lease finance receivables - - - - - Consumer and other loans 385 516 - 401 - Total 8,723 10,749 - 9,186 118 With a related allowance recorded: Commercial and industrial 256 345 254 829 - SBA 801 816 286 816 - Real estate: Commercial real estate Owner occupied - - - - - Non-owner - - - - - Construction Speculative - - - - - Non-speculative - - - - - SFR mortgage - - - - - Dairy & livestock and agribusiness - - - - - Municipal lease finance receivables - - - - - Consumer and other loans - - - - - Total 1,057 1,161 540 1,645 - Total impaired loans $ 9,780 $ 11,910 $ 540 $ 10,831 $ 118 As of December 31, 2018 (1) Recorded Unpaid Related (Dollars in thousands) With no related allowance recorded: Commercial and industrial $ 7,436 $ 11,457 $ - SBA 3,467 5,746 - Real estate: Commercial real estate Owner occupied 589 705 - Non-owner 2,808 4,324 - Construction Speculative - - - Non-speculative - - - SFR mortgage 5,349 6,270 - Dairy & livestock and agribusiness - - - Municipal lease finance receivables - - - Consumer and other loans 418 526 - Total 20,067 29,028 - With a related allowance recorded: Commercial and industrial 189 191 3 SBA - - - Real estate: Commercial real estate Owner occupied - - - Non-owner 3,143 3,144 478 Construction Speculative - - - Non-speculative - - - SFR mortgage - - - Dairy & livestock and agribusiness 78 78 12 Municipal lease finance receivables - - - Consumer and other loans 68 100 68 Total 3,478 3,513 561 Total impaired loans $ 23,545 $ 32,541 $ 561
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 Three Months Ended September 30, For the Nine Months Ended September 30, (Dollars in thousands) (Dollars in thousands) Performing TDRs: Beginning balance $ 3,219 $ 4,530 $ 3,594 $ 4,809 New modifications - - - 311 Payoffs/payments, net and other (51 ) (777 ) (426 ) (1,367 ) TDRs returned to accrual status - - - - TDRs placed on nonaccrual status - - - - Ending balance $ 3,168 $ 3,753 $ 3,168 $ 3,753 Nonperforming TDRs: Beginning balance $ 263 $ 3,892 $ 3,509 $ 4,200 New modifications - 278 - 316 Charge-offs - - (78 ) - Transfer to OREO - - (2,275 ) - Payoffs/payments, net and other (14 ) (650 ) (907 ) (996 ) TDRs returned to accrual status - - - - TDRs placed on nonaccrual status - - - - Ending balance $ 249 $ 3,520 $ 249 $ 3,520 Total TDRs $ 3,417 $ 7,273 $ 3,417 $ 7,273 (1) Excludes PCI loans.
Summary of Loans Modified as Troubled Debt Restructurings	The following tables summarize loans modified as TDRs for the periods presented. Modifications (1) For the Three Months Ended September 30, 201 8 Outstanding Recorded Investment Outstanding Financial Effect (Dollars in thousands) Commercial and industrial: Interest rate reduction - $ - - - - Change in amortization period - - - - - Real estate: Commercial real estate: Owner occupied Interest rate reduction - - - - - Change in amortization period - - - - - Non-owner Interest rate reduction - - - - - Change in amortization period - - - - - SFR mortgage: Interest rate reduction - - - - - Change in amortization period - - - - - Consumer: Interest rate reduction - - - - - Change in amortization period 1 278 278 272 - Total loans 1 $ 278 $ 278 $ 272 $ - For the Nine Months Ended September 30, 2018 (2) Number of Pre-Modification Post-Modification Investment Outstanding Financial Effect (Dollars in thousands) Commercial and industrial: Interest rate reduction - $ - $ - $ - $ - Change in amortization period or maturity 1 38 38 27 - Real estate: Commercial real estate: Owner occupied Interest rate reduction - - - - - Change in amortization period or maturity - - - - - Non-owner Interest rate reduction - - - - - Change in amortization period or maturity - - - - - SFR mortgage: Interest rate reduction - - - - - Change in amortization period or maturity 1 311 311 304 - Consumer: Interest rate reduction - - - - - Change in amortization period or maturity 1 278 278 272 - Total loans 3 $ 627 $ 627 $ 603 $ - (1) The tables above exclude modified loans that were paid off prior to the end of the period. (2) Excludes PCI loans. (3) Financial effects resulting from modifications represent charge-offs and ​​​​​​​specific allowance recorded at modification date. There were loans that were previously modified as a TDR within the previous 12 months that subsequently defaulted during the three and nine months ended September 30, 2019 and 2018.

Earnings Per Share Reconcilia_2

Earnings Per Share Reconciliation (Tables)	9 Months Ended
	Sep. 30, 2019
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 Three Months S eptember For the Nine Ended September 2019 2018 2019 2018 (In thousands, except per share amounts) Earnings per common share: Net earnings $ 50,423 $ 38,558 $ 156,546 $ 108,844 Less: Net earnings allocated to restricted stock 116 96 390 298 Net earnings allocated to common shareholders $ 50,307 $ 38,462 $ 156,156 $ 108,546 Weighted average shares outstanding 139,824 126,574 139,730 115,533 Basic earnings per common share $ 0.36 $ 0.30 $ 1.12 $ 0.94 Diluted earnings per common share: Net income allocated to common shareholders 50,307 38,462 156,156 108,546 Weighted average shares outstanding 139,824 126,574 139,730 115,533 Incremental shares from assumed exercise of outstanding options 151 363 217 397 Diluted weighted average shares outstanding 139,975 126,937 139,947 115,930 Diluted earnings per common share $ 0.36 $ 0.30 $ 1.12 $ 0.94

Fair Value Information (Tables)

Fair Value Information (Tables)	9 Months Ended
	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value on a Recurring Basis	Carrying Value at Quoted Prices in Significant Other Significant (Dollars in thousands) Description of assets Investment securities - AFS: Residential mortgage-backed securities $ 1,146,159 $ - $ 1,146,159 $ - CMO/REMIC - residential 382,928 - 382,928 - Municipal bonds 40,487 - 40,487 - Other securities 832 - 832 - 1,570,406 - 1,570,406 - Interest rate swaps 16,180 - 16,180 - Total assets $ 1,586,586 $ - $ 1,586,586 $ - Description of liability Interest rate swaps $ 16,180 $ - $ 16,180 $ - Total liabilities $ 16,180 $ - $ 16,180 $ - Carrying Value at Quoted Prices in Significant Other Significant (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 $ -
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 Quoted Prices in Active Markets for (Level 1) Significant Other Significant (Level 3) Total Losses (Dollars in thousands) Description of assets Impaired loans, excluding Commercial and industrial $ 256 $ - $ - $ 256 $ 254 SBA 938 - - 938 516 Real estate: Commercial real estate - - - - - Construction - - - - - SFR mortgage - - - - - Dairy & livestock and agribusiness - - - - - Consumer and other loans - - - - - Other real estate owned 444 - - 444 64 Asset held-for-sale - - - - - Total assets $ 1,638 $ - $ - $ 1,638 $ 834 Carrying Value at Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other (Level 2) Significant (Level 3) Total Losses For the Year Ended December 31, 2018 (Dollars in thousands) Description of assets Impaired loans, excluding 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
Estimated 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 September 30, 2019 and December 31, 2018, respectively. The use of different market assumptions and/or estimation methodologies may have a material effect on the estimated fair value amounts. September 30, 2019 Estimated Fair Value Carrying Level 1 Level 2 Level 3 Total (Dollars in thousands) Assets Total cash and cash equivalents $ 437,548 $ 437,548 $ - $ - $ 437,548 Interest-earning balances due from depository institutions 5,673 - 5,793 - 5,793 Investment securities available-for-sale 1,570,406 - 1,570,406 - 1,570,406 Investment securities held-to-maturity 703,953 - 711,891 - 711,891 Total loans, net of allowance for loan losses 7,425,779 - - 7,385,760 7,385,760 Swaps 16,180 - 16,180 - 16,180 Liabilities Deposits: Interest-bearing $ 3,409,226 $ - $ 3,407,573 $ - $ 3,407,573 Borrowings 412,764 - 412,372 - 412,372 Junior subordinated debentures 25,774 - - 20,266 20,266 Swaps 16,180 - 16,180 - 16,180 December 31, 2018 Estimated Fair Value Carrying 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 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

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Fair Value of Derivative Instruments	As of September 30, 2019 and December 31, 2018, the total notional amount of the Company’s swaps was $227.2 million, and $195.4 million, respectively. The location of the asset and liability, and their respective fair values , September 30, 2019 Asset Derivatives Liability Derivatives Balance Sheet Fair Balance Sheet Fair (Dollars in thousands) Derivatives not designated as hedging instruments: Interest rate swaps Other assets $ 16,180 Other liabilities $ 16,180 Total derivatives $ 16,180 $ 16,180 December 31, 2018 Asset Derivatives Liability Derivatives Balance Sheet Fair Balance Sheet Fair (Dollars in thousands) Derivatives not designated as hedging instruments: Interest rate swaps Other assets $ 1,938 Other liabilities $ 1,938 Total derivatives $ 1,938 $ 1,938
Effect of Derivative Instruments on Consolidated Statement of Earnings	The following table summarizes the effect of derivative financial instruments on the condensed consolidated statement of earnings for the periods presented. Derivatives Not Designated as Instruments Location of Gain Recognized in Instruments Amount of Gain Recognized in Income on Derivative Instruments For the Three Months Ended For the Nine Months Ended 2019 2018 2019 2018 (Dollars in thousands) Interest rate swaps Other income $ 378 $ 73 $ 1,135 $ 340 Total $ 378 $ 73 $ 1,135 $ 340

Other Comprehensive Income (Tab

Other Comprehensive Income (Tables)	9 Months Ended
	Sep. 30, 2019
Equity [Abstract]
Summary of Components of Other Comprehensive Income	The table below provides a summary of the components of other comprehensive income (“OCI”) for the periods presented. For the Three Months Ended September 30, 2019 2018 Before-tax Tax effect After-tax Before-tax Tax effect After-tax (Dollars in thousands) Investment securities: Net change in fair value recorded in $ 5,672 $ (1,677 ) $ 3,995 $ (10,235 ) $ 3,025 $ (7,210 ) Net realized gain reclassified into earnings (1) (5) 1 (4 ) - - - Amortization of unrealized losses on securities available-for-sale held-to-maturity (249 ) 74 (175 ) (152) 45 (107 ) Net change $ 5,418 $ (1,602 ) $ 3,816 $ (10,387) $ 3,070 $ (7,317 ) For the Nine Months Ended September 30, 2019 2018 Before-tax Tax effect After-tax Before-tax Tax effect After-tax (Dollars in thousands) Investment securities: Net change in fair value recorded in $ 44,586 $ (13,181 ) $ 31,405 $ (47,346 ) $ 13,997 $ (33,349 ) Net realized gain reclassified into earnings (1) (5 ) 1 (4 ) - - - Amortization of unrealized losses on securities available-for-sale held-to-maturity (1,450 ) 429 (1,021 ) (1,809 ) 535 (1,274 ) Net change $ 43,131 $ (12,751 ) $ 30,380 $ (49,155 ) $ 14,532 $ (34,623 ) (1) Included in other noninterest income.

Balance Sheet Offsetting (Table

Balance Sheet Offsetting (Tables)	9 Months Ended
	Sep. 30, 2019
Text Block [Abstract]
Schedule of Balance Sheet Offsetting	Gross Amounts Recognized in the Condensed Consolidated Balance Sheets Gross Amounts Offset in the Condensed Consolidated Balance Sheets Net Amounts Presented in the Condensed Consolidated Balance Sheets Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets Net Amount Financial Collateral (Dollars in thousands) September 30, Financial assets: Derivatives not designated as $ 16,180 $ - $ - $ 16,180 $ - $ 16,180 Total $ 16,180 $ - $ - $ 16,180 $ - $ 16,180 Financial liabilities: Derivatives not designated as $ 16,182 $ (2 ) $ 16,180 $ 2 $ (22,335 ) $ (6,153 ) Repurchase agreements 407,850 - 407,850 - (419,465 ) (11,615 ) Total $ 424,032 $ (2 ) $ 424,030 $ 2 $ (441,800 ) $ (17,768 ) December 31, 2018 Financial assets: Derivatives not designated as $ 1,938 $ - $ - $ 1,938 $ - $ 1,938 Total $ 1,938 $ - $ - $ 1,938 $ - $ 1,938 Financial liabilities: Derivatives not designated as $ 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 ) $ $ $ ) $ (41,149 )

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Components of lease costs and supplemental information related to leases	The following presents the components of lease costs and supplemental information related to leases as of September 30, 2019 and for the three and nine months ended September 30, 2019. As of September 30, 2019 (Dollars in thousands) Lease Assets and Liabilities ROU assets $ 17,340 Total lease liabilities 20,558 For the Three Months Ended For the Nine Months Ended September 30, 2019 (Dollars in thousands) Lease Cost Operating lease expense (1) $ 1,628 $ 5,634 Total lease expense $ 1,628 $ 5,634 (1) Other Information Cash paid for amounts included in the measurement of lease liabilities: Operating cash outflows from operating leases, net $ 1,640 $ 6,499 Lease Term and Discount Rate As of September 30, 2019 Weighted average remaining lease term (years) 4.26 Weighted average discount rate 3.46%
Future lease payments required for leases that have initial or remaining non-cancelable lease terms	The future lease payments required for leases that have initial or remaining non-cancelable As of September 30, 2019 (Dollars in thousands) Year: 2019 (excluding the nine September $ 1,973 2020 6,941 2021 5,178 2022 4,005 2023 2,336 Thereafter 3,100 Total future lease payments 23,533 Less: Imputed interest (2,975 ) Present value of lease liabilities $ 20,558

Revenue Recognition (Tables)

Revenue Recognition (Tables)	9 Months Ended
	Sep. 30, 2019
Revenue from Contract with Customer [Abstract]
Summary of Non Interest Income, Segregated by Revenue Streams in-Scope and Out-of-Scope of Topic 606	For the Three Months Ended September 30, For the Nine Months Months Ended September 30, 2019 2018 2019 2018 (Dollars in thousands) Noninterest income: In-scope Service charges on deposit accounts $ 4,833 $ 4,295 $ 15,039 $ 12,431 Trust and investment services 2,330 2,182 6,964 6,738 Bankcard services 637 875 2,614 2,637 Gain on OREO, net - - 129 3,540 Other 2,292 1,824 6,939 4,393 Noninterest Income (in-scope 10,092 9,176 31,685 29,739 Noninterest Income (out-of-scope 1,802 936 14,717 2,984 Total noninterest income $ 11,894 $ 10,112 $ 46,402 $ 32,723

Business - Additional Informati

Business - Additional Information (Detail) $ in Millions	Sep. 30, 2019LocationSubsidiary	Aug. 10, 2018USD ($)
Schedule Of Description Of Company [Line Items]
Number of inactive subsidiaries | Subsidiary	1
Bank operated banking centers	58
Bank operated trust office locations, number	3
Community Bank [Member]
Schedule Of Description Of Company [Line Items]
Bank operated banking centers		16
Total assets | $		$ 4,090

Summary of Significant Accoun_2

Summary of Significant Accounting Policies - Additional Information (Detail) $ in Thousands	Sep. 30, 2019USD ($)
Summary Of Significant Accounting Policies [Line Items]
Operating lease right of use asset	$ 17,340
Accounting Standards Update 2016-02 [Member]
Summary Of Significant Accounting Policies [Line Items]
Operating lease right of use asset	$ 20,000

Business Combinations - Additio

Business Combinations - Additional Information (Detail)	Aug. 10, 2018USD ($)Branch	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)	Jun. 30, 2019Centres	Dec. 31, 2018USD ($)
Business Acquisition [Line Items]
Number of branches owned by merger company | Centres						4
Goodwill		$ 663,707,000		$ 663,707,000			$ 666,539,000
Merger related expenses		244,000	$ 6,645,000	$ 6,005,000	$ 7,942,000
Community Bank [Member]
Business Acquisition [Line Items]
Acquisition date				Aug. 10, 2018
Number of branches owned by merger company	16					10
Acquired assets and assumed liabilities for cash	$ 180,719,000
Assets and assumed all of the liabilities, stock	722,767,000
Goodwill	547,144,000
Core deposit intangible assets	$ 52,200,000
Percentage of core deposits to total deposits	2.26%
Merger related expenses		$ 244,000	$ 6,600,000	$ 6,000,000	$ 7,900,000
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
Community Bank [Member] | Former CB Centres [Member]
Business Acquisition [Line Items]
Number of branches owned by merger company | Centres						9

Business Combinaions - Schedule

Business Combinaions - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands	Aug. 10, 2018	Sep. 30, 2019	Dec. 31, 2018
Liabilities assumed
Goodwill		$ 663,707	$ 666,539
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	2,738,100
Accrued interest receivable	7,916
Premises and equipment	14,632
BOLI	70,904
Core deposit intangible	52,200
Other assets	53,291
Total assets acquired	3,719,091
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	356,342
Goodwill	$ 547,144

Business Combinations - Busines

Business Combinations - Business Acquisition Pro Forma Information (Detail) - Community Bank [Member] - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2018
Business Acquisitions ProForma Information [Line Items]
Total revenues (net interest income plus noninterest income)	$ 120,467	$ 364,846
Net income	$ 44,623	$ 138,274
Earnings per share - basic	$ 0.32	$ 0.99
Earnings per share - diluted	$ 0.32	$ 0.99

Investment Securities - Summary

Investment Securities - Summary of Amortized Cost and Estimated Fair Value of Investment Securities (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Schedule of Investments [Line Items]
Amortized Cost, Available-for-sale	$ 1,549,406	$ 1,757,666
Gross Unrealized Holding Gain, Available-for-sale	22,678	2,033
Gross Unrealized Holding Loss, Available-for-sale	(1,678)	(25,614)
Fair Value, Available-for-sale	$ 1,570,406	$ 1,734,085
Total Percent, Available-for-sale	100.00%	100.00%
Amortized Cost, Held-to-maturity	$ 703,953	$ 744,440
Gross Unrealized Holding Gain, Held-to-maturity	10,136	1,128
Gross Unrealized Holding Loss, Held-to-maturity	(2,198)	(24,031)
Fair Value, Held-to-maturity	$ 711,891	$ 721,537
Total Percent, Held-to-maturity	100.00%	100.00%
CMO/REMIC - Residential [Member]
Schedule of Investments [Line Items]
Amortized Cost, Available-for-sale	$ 381,615	$ 217,223
Gross Unrealized Holding Gain, Available-for-sale	1,649	353
Gross Unrealized Holding Loss, Available-for-sale	(336)	(3,525)
Fair Value, Available-for-sale	$ 382,928	$ 214,051
Total Percent, Available-for-sale	24.38%	12.34%
Amortized Cost, Held-to-maturity	$ 204,263	$ 215,336
Gross Unrealized Holding Gain, Held-to-maturity	76	0
Gross Unrealized Holding Loss, Held-to-maturity	(1,467)	(12,081)
Fair Value, Held-to-maturity	$ 202,872	$ 203,255
Total Percent, Held-to-maturity	29.02%	28.93%
Government Agency/GSE [Member]
Schedule of Investments [Line Items]
Amortized Cost, Held-to-maturity	$ 123,917	$ 138,274
Gross Unrealized Holding Gain, Held-to-maturity	3,238	572
Gross Unrealized Holding Loss, Held-to-maturity	(170)	(2,622)
Fair Value, Held-to-maturity	$ 126,985	$ 136,224
Total Percent, Held-to-maturity	17.60%	18.57%
Residential Mortgage-backed Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost, Available-for-sale	$ 1,127,395	$ 1,494,106
Gross Unrealized Holding Gain, Available-for-sale	20,105	1,348
Gross Unrealized Holding Loss, Available-for-sale	(1,341)	(20,946)
Fair Value, Available-for-sale	$ 1,146,159	$ 1,474,508
Total Percent, Available-for-sale	72.99%	85.03%
Amortized Cost, Held-to-maturity	$ 172,919	$ 153,874
Gross Unrealized Holding Gain, Held-to-maturity	2,624	0
Gross Unrealized Holding Loss, Held-to-maturity	(3)	(3,140)
Fair Value, Held-to-maturity	$ 175,540	$ 150,734
Total Percent, Held-to-maturity	24.56%	20.67%
Municipal Bonds [Member]
Schedule of Investments [Line Items]
Amortized Cost, Available-for-sale	$ 39,564	$ 45,621
Gross Unrealized Holding Gain, Available-for-sale	924	332
Gross Unrealized Holding Loss, Available-for-sale	(1)	(1,143)
Fair Value, Available-for-sale	$ 40,487	$ 44,810
Total Percent, Available-for-sale	2.58%	2.59%
Amortized Cost, Held-to-maturity	$ 202,854	$ 236,956
Gross Unrealized Holding Gain, Held-to-maturity	4,198	556
Gross Unrealized Holding Loss, Held-to-maturity	(558)	(6,188)
Fair Value, Held-to-maturity	$ 206,494	$ 231,324
Total Percent, Held-to-maturity	28.82%	31.83%
Other Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost, Available-for-sale	$ 832	$ 716
Gross Unrealized Holding Gain, Available-for-sale	0	0
Gross Unrealized Holding Loss, Available-for-sale	0	0
Fair Value, Available-for-sale	$ 832	$ 716
Total Percent, Available-for-sale	0.05%	0.04%

Investment Securities - Summa_2

Investment Securities - Summary of Interest Income Earned on Investment Securities (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Net Investment Income [Line Items]
Total interest income from available-for-sale securities	$ 9,222	$ 11,521	$ 29,985	$ 35,086
Total interest income from held-to-maturity securities	4,298	4,666	13,249	14,238
Total investment income	13,520	16,187	43,234	49,324
Investment securities available-for-sale [Member]
Net Investment Income [Line Items]
Taxable	8,949	11,126	29,079	33,861
Tax-advantaged	273	395	906	1,225
Total interest income from available-for-sale securities	9,222	11,521	29,985	35,086
Investment securities held-to-maturity [Member]
Net Investment Income [Line Items]
Taxable	2,883	2,961	8,725	8,887
Tax-advantaged	1,415	1,705	4,524	5,351
Total interest income from held-to-maturity securities	$ 4,298	$ 4,666	$ 13,249	$ 14,238

Investment Securities - Summa_3

Investment Securities - Summary of Continuous Unrealized Loss Position of Securities (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Schedule of Investments [Line Items]
Fair Value, Less Than 12 Months, Available-for-sale	$ 122,597	$ 738,461
Gross Unrealized Holding Losses, Less Than 12 Months, Available-for-sale	(156)	(5,417)
Fair Value, 12 Months or Longer, Available-for-sale	167,966	742,610
Gross Unrealized Holding Losses, 12 Months or Longer, Available-for-sale	(1,522)	(20,197)
Fair Value, Available-for-sale	290,563	1,481,071
Gross Unrealized Holding Losses, Available-for-sale	(1,678)	(25,614)
Fair Value, Less Than 12 Months, Held-to-maturity	8,058	138,339
Gross Unrealized Holding Losses, Less Than 12 Months, Held-to-maturity	(8)	(1,277)
Fair Value, 12 Months or Longer, Held-to-maturity	230,437	426,784
Gross Unrealized Holding Losses, 12 Months or Longer, Held-to-maturity	(2,190)	(22,754)
Fair Value, Held-to-maturity	238,495	565,123
Gross Unrealized Holding Losses, Held-to-maturity	(2,198)	(24,031)
CMO/REMIC - Residential [Member]
Schedule of Investments [Line Items]
Fair Value, Less Than 12 Months, Available-for-sale	122,595	36,582
Gross Unrealized Holding Losses, Less Than 12 Months, Available-for-sale	(156)	(365)
Fair Value, 12 Months or Longer, Available-for-sale	39,498	135,062
Gross Unrealized Holding Losses, 12 Months or Longer, Available-for-sale	(180)	(3,160)
Fair Value, Available-for-sale	162,093	171,644
Gross Unrealized Holding Losses, Available-for-sale	(336)	(3,525)
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	178,297	203,254
Gross Unrealized Holding Losses, 12 Months or Longer, Held-to-maturity	(1,467)	(12,081)
Fair Value, Held-to-maturity	178,297	203,254
Gross Unrealized Holding Losses, Held-to-maturity	(1,467)	(12,081)
Government Agency/GSE [Member]
Schedule of Investments [Line Items]
Fair Value, Less Than 12 Months, Held-to-maturity	0	7,479
Gross Unrealized Holding Losses, Less Than 12 Months, Held-to-maturity	0	(15)
Fair Value, 12 Months or Longer, Held-to-maturity	19,923	54,944
Gross Unrealized Holding Losses, 12 Months or Longer, Held-to-maturity	(170)	(2,607)
Fair Value, Held-to-maturity	19,923	62,423
Gross Unrealized Holding Losses, Held-to-maturity	(170)	(2,622)
Residential Mortgage-backed Securities [Member]
Schedule of Investments [Line Items]
Fair Value, Less Than 12 Months, Available-for-sale	2	692,311
Gross Unrealized Holding Losses, Less Than 12 Months, Available-for-sale	0	(4,864)
Fair Value, 12 Months or Longer, Available-for-sale	127,904	593,367
Gross Unrealized Holding Losses, 12 Months or Longer, Available-for-sale	(1,341)	(16,082)
Fair Value, Available-for-sale	127,906	1,285,678
Gross Unrealized Holding Losses, Available-for-sale	(1,341)	(20,946)
Fair Value, Less Than 12 Months, Held-to-maturity	5,021	59,871
Gross Unrealized Holding Losses, Less Than 12 Months, Held-to-maturity	(3)	(484)
Fair Value, 12 Months or Longer, Held-to-maturity	0	90,863
Gross Unrealized Holding Losses, 12 Months or Longer, Held-to-maturity	0	(2,656)
Fair Value, Held-to-maturity	5,021	150,734
Gross Unrealized Holding Losses, Held-to-maturity	(3)	(3,140)
Municipal Bonds [Member]
Schedule of Investments [Line Items]
Fair Value, Less Than 12 Months, Available-for-sale	0	9,568
Gross Unrealized Holding Losses, Less Than 12 Months, Available-for-sale	0	(188)
Fair Value, 12 Months or Longer, Available-for-sale	564	14,181
Gross Unrealized Holding Losses, 12 Months or Longer, Available-for-sale	(1)	(955)
Fair Value, Available-for-sale	564	23,749
Gross Unrealized Holding Losses, Available-for-sale	(1)	(1,143)
Fair Value, Less Than 12 Months, Held-to-maturity	3,037	70,989
Gross Unrealized Holding Losses, Less Than 12 Months, Held-to-maturity	(5)	(778)
Fair Value, 12 Months or Longer, Held-to-maturity	32,217	77,723
Gross Unrealized Holding Losses, 12 Months or Longer, Held-to-maturity	(553)	(5,410)
Fair Value, Held-to-maturity	35,254	148,712
Gross Unrealized Holding Losses, Held-to-maturity	$ (558)	$ (6,188)

Investment Securities - Summa_4

Investment Securities - Summary of Amortized Cost and Fair Value of Debt Securities by Contractual Maturity (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
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	327,802
Due after five years through ten years, Amortized Cost, Held-to-maturity	161,463
Due after ten years, Amortized Cost, Held-to-maturity	214,188
Total Held-to-maturity, Debt Maturities, Amortized Cost Basis	703,953
Due in one year or less, Fair Value, Held-to-maturity	500
Due after one year through five years, Fair Value, Held-to-maturity	328,561
Due after five years through ten years, Fair Value, Held-to-maturity	163,676
Due after ten years, Fair Value, Held-to-maturity	219,154
Total, Held-to-maturity, Fair Value	711,891
Due in one year or less, Amortized Cost, Available-for-sale	12,278
Due after one year through five years, Amortized Cost, Available-for-sale	1,345,036
Due after five years through ten years, Amortized Cost, Available-for-sale	171,657
Due after ten years, Amortized Cost, Available-for-sale	20,435
Amortized Cost, Available-for-sale	1,549,406	$ 1,757,666
Due in one year or less, Fair Value, Available-for-sale	12,426
Due after one year through five years, Fair Value, Available-for-sale	1,364,026
Due after five years through ten years, Fair Value, Available-for-sale	173,033
Due after ten years, Fair Value, Available-for-sale	20,921
Total Available-for-sale Securities, Debt Maturities, Available-for-sale, Fair Value	$ 1,570,406	$ 1,734,085

Investment Securities - Additio

Investment Securities - Additional Information (Detail) - USD ($)	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Credit-related impairment loss on investment securities held-to-maturity	$ 0
Investment securities pledged as collateral	$ 1,460,000,000	$ 1,660,000,000
United States [Member]
Debt Securities, Available-for-sale [Line Items]
Securities issued by U.S. government percentage	89.00%

Loans and Lease Finance Recei_3

Loans and Lease Finance Receivables and Allowance for Loan Losses - Additional Information (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2019USD ($)Contract	Sep. 30, 2018USD ($)Contract	Sep. 30, 2019USD ($)SecurityLoanContract	Sep. 30, 2018USD ($)Contract	Dec. 31, 2018USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total fixed rate loans held	$ 3,830,000,000		$ 3,830,000,000
Secure borrowings and available lines of credit from FHLB and Federal Reserve Bank	5,910,000,000		5,910,000,000		$ 5,710,000,000
Impaired, at carrying value	9,780,000	$ 20,183,000	9,780,000	$ 20,183,000	23,545,000
Impaired, at carrying value	540,000	$ 83,000	$ 540,000	$ 83,000	561,000
Number of performing loans | SecurityLoan			12
Reserve for credit risk for undisbursed commitments	9,000,000		$ 9,000,000		9,000,000
Allocation of allowance to troubled debt restructuring	$ 0		$ 0		$ 490,000
Number of loans modified as a TDR within the previous 12 months that subsequently defaulted | Contract	0	0	0	0
Percentage of PCI loans to Loan Receivable	0.20%		0.20%		0.20%
Outstanding Loans Held-for-sale	$ 0		$ 0		$ 0
Commercial Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of total gross loan portfolio (excluding PCI loans)	77.01%		77.01%
Notes receivable gross	$ 5,375,668,000		$ 5,375,668,000		5,408,636,000
Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of total gross loan portfolio (excluding PCI loans)	71.69%		71.69%
Nonaccrual Small Business Administration Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	$ 1,600,000		$ 1,600,000
Impaired Loans Modified in Troubled Debt Restructure [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired, at carrying value	3,400,000		3,400,000
Loans classified as troubled debt restructured	3,400,000		3,400,000
Single-family Residential Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	888,000		888,000
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	1,100,000		1,100,000
Nonaccrual Single Family Mortgage Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	2,700,000		2,700,000
Nonperforming Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired, at carrying value	249,000		249,000
Loans classified as troubled debt restructured	249,000		249,000
Performing Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired, at carrying value	9,800,000		9,800,000
Loans classified as troubled debt restructured	3,200,000		3,200,000
Performing Financing Receivable [Member] | Commercial Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans classified as troubled debt restructured	542,000		$ 542,000
Number of loans | SecurityLoan			1
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	3,200,000		$ 3,200,000
Performing Financing Receivable [Member] | Single-family Residential Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans classified as troubled debt restructured	2,100,000		$ 2,100,000
Number of loans | SecurityLoan			8
Performing Financing Receivable [Member] | Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans classified as troubled debt restructured	88,000		$ 88,000
Number of loans | SecurityLoan			2
Performing Financing Receivable [Member] | Small Business Administration [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans classified as troubled debt restructured	417,000		$ 417,000
Performing Financing Receivable [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loans | SecurityLoan			1
Loans, Excluding PCI Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	311,200,000		$ 311,200,000
Impaired, at carrying value					23,500,000
Outstanding balance	6,612,000		6,612,000		19,951,000
Loans, Excluding PCI Loans [Member] | Commercial Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross					5,394,229,000
Loans, Excluding PCI Loans [Member] | Dairy & Livestock Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	251,300,000		251,300,000		340,500,000
Loans, Excluding PCI Loans [Member] | Agribusiness Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	60,000,000		60,000,000		54,000,000
Loans, Excluding PCI Loans [Member] | Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	1,550,000		1,550,000		7,490,000
Loans, Excluding PCI Loans [Member] | Small Business Administration [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	2,706,000		2,706,000		$ 2,892,000
Loans, Excluding PCI Loans [Member] | Consumer and Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	$ 385,000		$ 385,000
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)	4.57%		4.57%		4.27%
Notes receivable gross	$ 245,600,000		$ 245,600,000		$ 231,000,000
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]
Notes receivable gross	130,400,000		130,400,000		126,900,000
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]
Notes receivable gross	$ 115,100,000		$ 115,100,000		$ 104,100,000

Loans and Lease Finance Recei_4

Loans and Lease Finance Receivables and Allowance for Loan Losses - Summary of Components of Loans and Lease Finance Receivables, Including PCI Loans (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Construction	$ 119,931		$ 122,782
Total Gross loans	7,498,317		7,769,439
Less: Deferred loan fees, net	(3,866)		(4,828)
Gross loans, net of deferred loan fees	7,494,451		7,764,611
Less: Allowance for loan losses	(68,672)	$ (67,132)	(63,613)	$ (60,007)	$ (59,583)	$ (59,585)
Total loans and lease finance receivables	7,425,779		7,700,998
Commercial And Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	921,678		1,002,728
SBA [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	319,571		351,301
Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	5,375,668		5,408,636
SFR mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	278,644		296,649
Dairy & livestock and agribusiness [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	311,229		394,543
Municipal Lease Finance Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	54,468		64,186
Less: Allowance for loan losses	(662)	$ (726)	(775)	(815)	(808)	(851)
Consumer and other loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	117,128		128,614
PCI Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Construction			0
Total Gross loans			17,214
Less: Deferred loan fees, net			0
Gross loans, net of deferred loan fees			17,214
Less: Allowance for loan losses			(204)	$ (205)	$ (216)	$ (367)
Total loans and lease finance receivables			17,010
PCI Loans [Member] | Commercial And Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross			519
PCI Loans [Member] | SBA [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross			1,258
PCI Loans [Member] | Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross			14,407
PCI Loans [Member] | SFR mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross			145
PCI Loans [Member] | Dairy & livestock and agribusiness [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross			700
PCI Loans [Member] | Municipal Lease Finance Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross			0
PCI Loans [Member] | Consumer and other loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross			185
Loans, Excluding PCI Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	311,200
Construction			122,782
Total Gross loans	7,498,317		7,752,225
Less: Deferred loan fees, net			(4,828)
Gross loans, net of deferred loan fees			7,747,397
Less: Allowance for loan losses			(63,409)
Total loans and lease finance receivables			7,683,988
Loans, Excluding PCI Loans [Member] | Commercial And Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	921,678		1,002,209
Loans, Excluding PCI Loans [Member] | SBA [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	319,571		350,043
Loans, Excluding PCI Loans [Member] | Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross			5,394,229
Loans, Excluding PCI Loans [Member] | SFR mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	278,644		296,504
Loans, Excluding PCI Loans [Member] | Dairy & livestock and agribusiness [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	311,229		393,843
Loans, Excluding PCI Loans [Member] | Municipal Lease Finance Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	54,468		64,186
Total Gross loans	54,468		64,186
Loans, Excluding PCI Loans [Member] | Consumer and other loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	$ 117,128		$ 128,429

Loans and Lease Finance Recei_5

Loans and Lease Finance Receivables and Allowance for Loan Losses - Summary of Loan, Including PCI Loans by Internal Risk Ratings (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Gross loans	$ 7,498,317	$ 7,769,439
Commercial And Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	921,678	1,002,728
SBA [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	319,571	351,301
SFR mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	278,644	296,649
Dairy & Livestock and Agribusiness [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	311,229	394,543
Municipal Lease Finance Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	54,468	64,186
Consumer Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	117,128	128,614
Loans, Excluding PCI Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial real estate, Non-owner occupied	3,282,577	3,276,239
Notes receivable gross	311,200
Total Gross loans	7,498,317	7,752,225
Loans, Excluding PCI Loans [Member] | Commercial And Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	921,678	1,002,209
Loans, Excluding PCI Loans [Member] | SBA [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	319,571	350,043
Loans, Excluding PCI Loans [Member] | Commercial real estate, owner occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	2,093,091	2,117,990
Total Gross loans	2,093,091	2,117,990
Loans, Excluding PCI Loans [Member] | Construction, Speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	105,636	118,233
Loans, Excluding PCI Loans [Member] | Construction, Non-speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	14,295	4,549
Loans, Excluding PCI Loans [Member] | SFR mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	278,644	296,504
Loans, Excluding PCI Loans [Member] | Dairy & Livestock and Agribusiness [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	311,229	393,843
Loans, Excluding PCI Loans [Member] | Municipal Lease Finance Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	54,468	64,186
Total Gross loans	54,468	64,186
Loans, Excluding PCI Loans [Member] | Consumer Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	117,128	128,429
Pass [Member] | Loans, Excluding PCI Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial real estate, Non-owner occupied	3,269,174	3,260,822
Total Gross loans	7,257,128	7,519,101
Pass [Member] | Loans, Excluding PCI Loans [Member] | Commercial And Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	892,865	961,909
Pass [Member] | Loans, Excluding PCI Loans [Member] | SBA [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	296,127	336,033
Pass [Member] | Loans, Excluding PCI Loans [Member] | Commercial real estate, owner occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	1,987,168	2,008,169
Pass [Member] | Loans, Excluding PCI Loans [Member] | Construction, Speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	105,636	118,233
Pass [Member] | Loans, Excluding PCI Loans [Member] | Construction, Non-speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	14,295	4,549
Pass [Member] | Loans, Excluding PCI Loans [Member] | SFR mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	275,069	289,607
Pass [Member] | Loans, Excluding PCI Loans [Member] | Dairy & Livestock and Agribusiness [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	247,554	350,044
Pass [Member] | Loans, Excluding PCI Loans [Member] | Municipal Lease Finance Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	53,998	63,650
Pass [Member] | Loans, Excluding PCI Loans [Member] | Consumer Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	115,242	126,085
Special Mention [Member] | Loans, Excluding PCI Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial real estate, Non-owner occupied	12,663	9,938
Total Gross loans	181,141	182,207
Special Mention [Member] | Loans, Excluding PCI Loans [Member] | Commercial And Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	24,456	29,358
Special Mention [Member] | Loans, Excluding PCI Loans [Member] | SBA [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	13,764	7,375
Special Mention [Member] | Loans, Excluding PCI Loans [Member] | Commercial real estate, owner occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	83,305	95,841
Special Mention [Member] | Loans, Excluding PCI Loans [Member] | Construction, Speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	0	0
Special Mention [Member] | Loans, Excluding PCI Loans [Member] | Construction, Non-speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	0	0
Special Mention [Member] | Loans, Excluding PCI Loans [Member] | SFR mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	2,053	3,310
Special Mention [Member] | Loans, Excluding PCI Loans [Member] | Dairy & Livestock and Agribusiness [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	43,585	34,586
Special Mention [Member] | Loans, Excluding PCI Loans [Member] | Municipal Lease Finance Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	470	536
Special Mention [Member] | Loans, Excluding PCI Loans [Member] | Consumer Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	845	1,263
Substandard [Member] | Loans, Excluding PCI Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial real estate, Non-owner occupied	740	5,479
Total Gross loans	60,048	50,917
Substandard [Member] | Loans, Excluding PCI Loans [Member] | Commercial And Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	4,357	10,942
Substandard [Member] | Loans, Excluding PCI Loans [Member] | SBA [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	9,680	6,635
Substandard [Member] | Loans, Excluding PCI Loans [Member] | Commercial real estate, owner occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	22,618	13,980
Substandard [Member] | Loans, Excluding PCI Loans [Member] | Construction, Speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	0	0
Substandard [Member] | Loans, Excluding PCI Loans [Member] | Construction, Non-speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	0	0
Substandard [Member] | Loans, Excluding PCI Loans [Member] | SFR mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	1,522	3,587
Substandard [Member] | Loans, Excluding PCI Loans [Member] | Dairy & Livestock and Agribusiness [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	20,090	9,213
Substandard [Member] | Loans, Excluding PCI Loans [Member] | Municipal Lease Finance Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	0	0
Substandard [Member] | Loans, Excluding PCI Loans [Member] | Consumer Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	1,041	1,081
Doubtful & Loss [Member] | Loans, Excluding PCI Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial real estate, Non-owner occupied	0	0
Total Gross loans	0	0
Doubtful & Loss [Member] | Loans, Excluding PCI Loans [Member] | Commercial And Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	0	0
Doubtful & Loss [Member] | Loans, Excluding PCI Loans [Member] | SBA [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	0	0
Doubtful & Loss [Member] | Loans, Excluding PCI Loans [Member] | Commercial real estate, owner occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	0	0
Doubtful & Loss [Member] | Loans, Excluding PCI Loans [Member] | Construction, Speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	0	0
Doubtful & Loss [Member] | Loans, Excluding PCI Loans [Member] | Construction, Non-speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	0	0
Doubtful & Loss [Member] | Loans, Excluding PCI Loans [Member] | SFR mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	0	0
Doubtful & Loss [Member] | Loans, Excluding PCI Loans [Member] | Dairy & Livestock and Agribusiness [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	0	0
Doubtful & Loss [Member] | Loans, Excluding PCI Loans [Member] | Municipal Lease Finance Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	0	0
Doubtful & Loss [Member] | Loans, Excluding PCI Loans [Member] | Consumer Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	$ 0	$ 0

Loans and Lease Finance Recei_6

Loans and Lease Finance Receivables and Allowance for Loan Losses - Summary of Loan, Including PCI Loans by Internal Risk Ratings (Parenthetical) (Detail) - USD ($)	3 Months Ended
	Sep. 30, 2018	Dec. 31, 2018
Payments to Acquire Loans Receivable	$ 19,000,000
Financial Asset Acquired with Credit Deterioration [Member]
PCI Loans		$ 17,200,000
Financial Asset Acquired with Credit Deterioration [Member] | Pass [Member]
PCI Loans		15,800,000
Financial Asset Acquired with Credit Deterioration [Member] | Special Mention [Member]
PCI Loans		1,200,000
Financial Asset Acquired with Credit Deterioration [Member] | Substandard [Member]
PCI Loans		224,000
Financial Asset Acquired with Credit Deterioration [Member] | Doubtful [Member]
PCI Loans		$ 0

Loans and Lease Finance Recei_7

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	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	$ 67,132	$ 59,583	$ 63,613	$ 59,585
Charge-offs	(68)	(258)	(428)	(267)
Recoveries	108	182	487	2,189
Provision for (Recapture of) loan losses	1,500	500	5,000	(1,500)
Ending Balance	68,672	60,007	68,672	60,007
PCI Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		216	204	367
Charge-offs		0		0
Recoveries		0		0
Provision for (Recapture of) loan losses		(11)		(162)
Ending Balance		205		205
Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	7,857	6,970	7,528	7,280
Charge-offs	0	0	(48)	0
Recoveries	94	44	253	81
Provision for (Recapture of) loan losses	287	477	505	130
Ending Balance	8,238	7,491	8,238	7,491
Small Business Administration [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	1,119	841	1,078	869
Charge-offs	(65)	(257)	(295)	(257)
Recoveries	0	5	9	15
Provision for (Recapture of) loan losses	412	369	674	331
Ending Balance	1,466	958	1,466	958
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	48,287	42,597	45,097	41,722
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision for (Recapture of) loan losses	624	(1,056)	3,814	(181)
Ending Balance	48,911	41,541	48,911	41,541
Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	871	1,003	981	984
Charge-offs	0	0	0	0
Recoveries	3	15	9	1,945
Provision for (Recapture of) loan losses	55	115	(61)	(1,796)
Ending Balance	929	1,133	929	1,133
SFR Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	2,323	2,155	2,197	2,112
Charge-offs	0	0	0	0
Recoveries	8	0	191	0
Provision for (Recapture of) loan losses	44	(30)	(13)	13
Ending Balance	2,375	2,125	2,375	2,125
Dairy & Livestock and Agribusiness [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	5,341	4,351	5,225	4,647
Charge-offs	0	0	(78)	0
Recoveries	0	0	19	19
Provision for (Recapture of) loan losses	88	673	263	358
Ending Balance	5,429	5,024	5,429	5,024
Municipal Lease Finance Receivables [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	726	808	775	851
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision for (Recapture of) loan losses	(64)	7	(113)	(36)
Ending Balance	662	815	662	815
Consumer and Other Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	608	642	732	753
Charge-offs	(3)	(1)	(7)	(10)
Recoveries	3	118	6	129
Provision for (Recapture of) loan losses	54	(44)	(69)	(157)
Ending Balance	$ 662	$ 715	$ 662	$ 715

Loans and Lease Finance Recei_8

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	Sep. 30, 2019	Sep. 30, 2018
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment in Loans, Individually Evaluated for Impairment	$ 9,780	$ 20,183
Recorded Investment in Loans, Collectively Evaluated for Impairment	7,488,537	7,550,280
Recorded Investment in Loans, Acquired with Deterioriated Credit Quality		17,260
Allowance for Loan Losses, Individually Evaluated for Impairment	540	83
Allowance for Loan Losses, Collectively Evaluated for Impairment	68,132	59,719
Allowance for Loan Losses, Acquired with Deterioriated Credit Quality		205
PCI Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment in Loans, Individually Evaluated for Impairment		0
Recorded Investment in Loans, Collectively Evaluated for Impairment		0
Recorded Investment in Loans, Acquired with Deterioriated Credit Quality		17,260
Allowance for Loan Losses, Individually Evaluated for Impairment		0
Allowance for Loan Losses, Collectively Evaluated for Impairment		0
Allowance for Loan Losses, Acquired with Deterioriated Credit Quality		205
Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment in Loans, Individually Evaluated for Impairment	1,638	3,168
Recorded Investment in Loans, Collectively Evaluated for Impairment	920,040	1,018,738
Recorded Investment in Loans, Acquired with Deterioriated Credit Quality		0
Allowance for Loan Losses, Individually Evaluated for Impairment	254	0
Allowance for Loan Losses, Collectively Evaluated for Impairment	7,984	7,491
Allowance for Loan Losses, Acquired with Deterioriated Credit Quality		0
Small Business Administration [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment in Loans, Individually Evaluated for Impairment	3,248	3,593
Recorded Investment in Loans, Collectively Evaluated for Impairment	316,323	353,459
Recorded Investment in Loans, Acquired with Deterioriated Credit Quality		0
Allowance for Loan Losses, Individually Evaluated for Impairment	286	0
Allowance for Loan Losses, Collectively Evaluated for Impairment	1,180	958
Allowance for Loan Losses, Acquired with Deterioriated Credit Quality		0
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment in Loans, Individually Evaluated for Impairment	1,500	6,348
Recorded Investment in Loans, Collectively Evaluated for Impairment	5,374,168	5,262,392
Recorded Investment in Loans, Acquired with Deterioriated Credit Quality		0
Allowance for Loan Losses, Individually Evaluated for Impairment	0	0
Allowance for Loan Losses, Collectively Evaluated for Impairment	48,911	41,541
Allowance for Loan Losses, Acquired with Deterioriated Credit Quality		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	119,931	123,274
Recorded Investment in Loans, Acquired with Deterioriated Credit Quality		0
Allowance for Loan Losses, Individually Evaluated for Impairment	0	0
Allowance for Loan Losses, Collectively Evaluated for Impairment	929	1,133
Allowance for Loan Losses, Acquired with Deterioriated Credit Quality		0
SFR Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment in Loans, Individually Evaluated for Impairment	3,009	5,492
Recorded Investment in Loans, Collectively Evaluated for Impairment	275,635	287,024
Recorded Investment in Loans, Acquired with Deterioriated Credit Quality		0
Allowance for Loan Losses, Individually Evaluated for Impairment	0	13
Allowance for Loan Losses, Collectively Evaluated for Impairment	2,375	2,112
Allowance for Loan Losses, Acquired with Deterioriated Credit Quality		0
Dairy & Livestock and Agribusiness [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment in Loans, Individually Evaluated for Impairment	0	775
Recorded Investment in Loans, Collectively Evaluated for Impairment	311,229	303,823
Recorded Investment in Loans, Acquired with Deterioriated Credit Quality		0
Allowance for Loan Losses, Individually Evaluated for Impairment	0	0
Allowance for Loan Losses, Collectively Evaluated for Impairment	5,429	5,024
Allowance for Loan Losses, Acquired with Deterioriated Credit Quality		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	54,468	67,581
Recorded Investment in Loans, Acquired with Deterioriated Credit Quality		0
Allowance for Loan Losses, Individually Evaluated for Impairment	0	0
Allowance for Loan Losses, Collectively Evaluated for Impairment	662	815
Allowance for Loan Losses, Acquired with Deterioriated Credit Quality		0
Consumer and Other Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment in Loans, Individually Evaluated for Impairment	385	807
Recorded Investment in Loans, Collectively Evaluated for Impairment	116,743	133,989
Recorded Investment in Loans, Acquired with Deterioriated Credit Quality		0
Allowance for Loan Losses, Individually Evaluated for Impairment	0	70
Allowance for Loan Losses, Collectively Evaluated for Impairment	$ 662	645
Allowance for Loan Losses, Acquired with Deterioriated Credit Quality		$ 0

Loans and Lease Finance Recei_9

Loans and Lease Finance Receivables and Allowance for Loan Losses - Schedule of Recorded Investment in, and Aging of, Past Due and Nonaccrual Loans, Including PCI Loans by Class of Loans (Detail) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	$ 7,490,278,000
Total Gross loans	7,498,317,000	$ 7,769,439,000
30-59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	661,000	33,000
60-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	1,700,000	57,000
Loans, Excluding PCI Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due and Accruing	1,427,000	5,290,000
Nonaccrual	6,612,000	19,951,000
Current		7,726,984,000
Total Gross loans	7,498,317,000	7,752,225,000
Loans, Excluding PCI Loans [Member] | 30-59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due and Accruing	1,124,000	4,431,000
Loans, Excluding PCI Loans [Member] | 60-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due and Accruing	303,000	859,000
Loans, Excluding PCI Loans [Member] | Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due and Accruing	756,000	909,000
Nonaccrual	1,550,000	7,490,000
Current	919,372,000	993,810,000
Total Gross loans	921,678,000	1,002,209,000
Loans, Excluding PCI Loans [Member] | Commercial and Industrial [Member] | 30-59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due and Accruing	756,000	820,000
Loans, Excluding PCI Loans [Member] | Commercial and Industrial [Member] | 60-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due and Accruing	0	89,000
Loans, Excluding PCI Loans [Member] | Small Business Administration [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due and Accruing	303,000	1,307,000
Nonaccrual	2,706,000	2,892,000
Current	316,562,000	345,844,000
Total Gross loans	319,571,000	350,043,000
Loans, Excluding PCI Loans [Member] | Small Business Administration [Member] | 30-59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due and Accruing	0	1,172,000
Loans, Excluding PCI Loans [Member] | Small Business Administration [Member] | 60-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due and Accruing	303,000	135,000
Loans, Excluding PCI Loans [Member] | Commercial Real Estate Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due and Accruing	0	2,789,000
Nonaccrual	494,000	589,000
Current	2,092,597,000	2,114,612,000
Total Gross loans	2,093,091,000	2,117,990,000
Loans, Excluding PCI Loans [Member] | Commercial Real Estate Owner Occupied [Member] | 30-59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due and Accruing	0	2,439,000
Loans, Excluding PCI Loans [Member] | Commercial Real Estate Owner Occupied [Member] | 60-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due and Accruing	0	350,000
Loans, Excluding PCI Loans [Member] | Commercial Real Estate Non-owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due and Accruing	368,000	0
Nonaccrual	589,000	5,479,000
Current	3,281,620,000	3,270,760,000
Total Gross loans	3,282,577,000	3,276,239,000
Loans, Excluding PCI Loans [Member] | Commercial Real Estate Non-owner Occupied [Member] | 30-59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due and Accruing	368,000	0
Loans, Excluding PCI Loans [Member] | Commercial Real Estate Non-owner Occupied [Member] | 60-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due and Accruing	0	0
Loans, Excluding PCI Loans [Member] | Construction Speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due and Accruing	0	0
Nonaccrual	0	0
Current	105,636,000	118,233,000
Total Gross loans	105,636,000	118,233,000
Loans, Excluding PCI Loans [Member] | Construction Speculative [Member] | 30-59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due and Accruing	0	0
Loans, Excluding PCI Loans [Member] | Construction Speculative [Member] | 60-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due and Accruing	0	0
Loans, Excluding PCI Loans [Member] | Construction Non-speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due and Accruing	0	0
Nonaccrual	0	0
Current	14,295,000	4,549,000
Total Gross loans	14,295,000	4,549,000
Loans, Excluding PCI Loans [Member] | Construction Non-speculative [Member] | 30-59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due and Accruing	0	0
Loans, Excluding PCI Loans [Member] | Construction Non-speculative [Member] | 60-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due and Accruing	0	0
Loans, Excluding PCI Loans [Member] | SFR Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due and Accruing	0	285,000
Nonaccrual	888,000	2,937,000
Current	277,756,000	293,282,000
Total Gross loans	278,644,000	296,504,000
Loans, Excluding PCI Loans [Member] | SFR Mortgage [Member] | 30-59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due and Accruing	0	0
Loans, Excluding PCI Loans [Member] | SFR Mortgage [Member] | 60-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due and Accruing	0	285,000
Loans, Excluding PCI Loans [Member] | Dairy & Livestock and Agribusiness [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due and Accruing	0	0
Nonaccrual	0	78,000
Current	311,229,000	393,765,000
Total Gross loans	311,229,000	393,843,000
Loans, Excluding PCI Loans [Member] | Dairy & Livestock and Agribusiness [Member] | 30-59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due and Accruing	0	0
Loans, Excluding PCI Loans [Member] | Dairy & Livestock and Agribusiness [Member] | 60-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due and Accruing	0	0
Loans, Excluding PCI Loans [Member] | Municipal Lease Finance Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due and Accruing	0	0
Nonaccrual	0	0
Current	54,468,000	64,186,000
Total Gross loans	54,468,000	64,186,000
Loans, Excluding PCI Loans [Member] | Municipal Lease Finance Receivables [Member] | 30-59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due and Accruing	0	0
Loans, Excluding PCI Loans [Member] | Municipal Lease Finance Receivables [Member] | 60-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due and Accruing	0	0
Loans, Excluding PCI Loans [Member] | Consumer and Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due and Accruing	0	0
Nonaccrual	385,000	486,000
Current	116,743,000	127,943,000
Total Gross loans	117,128,000	128,429,000
Loans, Excluding PCI Loans [Member] | Consumer and Other Loans [Member] | 30-59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due and Accruing	0	0
Loans, Excluding PCI Loans [Member] | Consumer and Other Loans [Member] | 60-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due and Accruing	$ 0	$ 0

Loans and Lease Finance Rece_10

Loans and Lease Finance Receivables and Allowance for Loan Losses - Schedule of Recorded Investment in, and Aging of, Past Due and Nonaccrual Loans, Including PCI Loans by Class of Loans (Parenthetical) (Detail) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing loans, current	$ 1,000,000	$ 2,300,000
Small Business Administration Loans [Member] | Financial Guarantee [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans	1,600,000
Community Bank [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans	4,500,000	12,300,000
30-59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	661,000	33,000
60-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	1,700,000	57,000
90+ Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	$ 3,300,000	$ 17,600,000

Loans and Lease Finance Rece_11

Loans and Lease Finance Receivables and Allowance for Loan Losses - Schedule of Held-for-Investment Loans, Individually Evaluated for Impairment by Class of Loans (Detail) - USD ($)	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment, With no related allowance recorded	$ 8,723,000	$ 20,100,000	$ 20,067,000
Recorded Investment, With a related allowance recorded	1,057,000	83,000	3,478,000
Recorded Investment, Total impaired loans	9,780,000	20,183,000	23,545,000
Unpaid Principal Balance, With no related allowance recorded	10,749,000	25,284,000	29,028,000
Unpaid Principal Balance, With a related allowance recorded	1,161,000	114,000	3,513,000
Unpaid Principal Balance, Total impaired loans	11,910,000	25,398,000	32,541,000
Related Allowance, With no related allowance recorded	0	0	0
Related Allowance, With a related allowance recorded	540,000	83,000	561,000
Related Allowance, Total impaired loans	540,000	83,000	561,000
Average Recorded Investment, With no related allowance recorded	9,186,000	21,798,000
Average Recorded Investment, With a related allowance recorded	1,645,000	98,000
Average Recorded Investment, Total impaired loans	10,831,000	21,896,000
Interest Income Recognized, With no related allowance recorded	118,000	123,000
Interest Income Recognized, With a related allowance recorded	0	0
Interest Income Recognized, Total impaired loans	118,000	123,000
Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment, With no related allowance recorded	1,382,000	3,168,000	7,436,000
Recorded Investment, With a related allowance recorded	256,000	0	189,000
Unpaid Principal Balance, With no related allowance recorded	1,537,000	3,829,000	11,457,000
Unpaid Principal Balance, With a related allowance recorded	345,000	0	191,000
Related Allowance, With no related allowance recorded	0	0	0
Related Allowance, With a related allowance recorded	254,000	0	3,000
Average Recorded Investment, With no related allowance recorded	1,560,000	3,439,000
Average Recorded Investment, With a related allowance recorded	829,000	0
Interest Income Recognized, With no related allowance recorded	4,000	6,000
Interest Income Recognized, With a related allowance recorded	0	0
Small Business Administration [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment, With no related allowance recorded	2,447,000	3,593,000	3,467,000
Recorded Investment, With a related allowance recorded	801,000	0	0
Unpaid Principal Balance, With no related allowance recorded	3,554,000	5,779,000	5,746,000
Unpaid Principal Balance, With a related allowance recorded	816,000	0	0
Related Allowance, With no related allowance recorded	0	0	0
Related Allowance, With a related allowance recorded	286,000	0	0
Average Recorded Investment, With no related allowance recorded	2,606,000	4,457,000
Average Recorded Investment, With a related allowance recorded	816,000	0
Interest Income Recognized, With no related allowance recorded	31,000	34,000
Interest Income Recognized, With a related allowance recorded	0	0
Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment, With no related allowance recorded	494,000	615,000	589,000
Recorded Investment, With a related allowance recorded	0	0	0
Unpaid Principal Balance, With no related allowance recorded	614,000	726,000	705,000
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	508,000	644,000
Average Recorded Investment, With a related allowance recorded	0	0
Interest Income Recognized, With no related allowance recorded	0	0
Interest Income Recognized, With a related allowance recorded	0	0
Commercial Real Estate Non-owner Occupied [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment, With no related allowance recorded	1,006,000	5,733,000	2,808,000
Recorded Investment, With a related allowance recorded	0	0	3,143,000
Unpaid Principal Balance, With no related allowance recorded	1,190,000	6,385,000	4,324,000
Unpaid Principal Balance, With a related allowance recorded	0	0	3,144,000
Related Allowance, With no related allowance recorded	0	0	0
Related Allowance, With a related allowance recorded	0	0	478,000
Average Recorded Investment, With no related allowance recorded	1,052,000	5,904,000
Average Recorded Investment, With a related allowance recorded	0	0
Interest Income Recognized, With no related allowance recorded	21,000	24,000
Interest Income Recognized, With a related allowance recorded	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
Average Recorded Investment, With a related allowance recorded	0	0
Interest Income Recognized, With no related allowance recorded	0	0
Interest Income Recognized, With a related allowance recorded	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
Average Recorded Investment, With a related allowance recorded	0	0
Interest Income Recognized, With no related allowance recorded	0	0
Interest Income Recognized, With a related allowance recorded	0	0
SFR Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment, With no related allowance recorded	3,009,000	5,479,000	5,349,000
Recorded Investment, With a related allowance recorded	0	13,000	0
Unpaid Principal Balance, With no related allowance recorded	3,338,000	6,449,000	6,270,000
Unpaid Principal Balance, With a related allowance recorded	0	13,000	0
Related Allowance, With no related allowance recorded	0	0	0
Related Allowance, With a related allowance recorded	0	13,000	0
Average Recorded Investment, With no related allowance recorded	3,059,000	5,679,000
Average Recorded Investment, With a related allowance recorded	0	13,000
Interest Income Recognized, With no related allowance recorded	62,000	59,000
Interest Income Recognized, With a related allowance recorded	0	0
Dairy & Livestock and Agribusiness [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment, With no related allowance recorded	0	775,000	0
Recorded Investment, With a related allowance recorded	0	0	78,000
Unpaid Principal Balance, With no related allowance recorded	0	1,091,000	0
Unpaid Principal Balance, With a related allowance recorded	0	0	78,000
Related Allowance, With no related allowance recorded	0	0	0
Related Allowance, With a related allowance recorded	0	0	12,000
Average Recorded Investment, With no related allowance recorded	0	808,000
Average Recorded Investment, With a related allowance recorded	0	0
Interest Income Recognized, With no related allowance recorded	0	0
Interest Income Recognized, With a related allowance recorded	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
Average Recorded Investment, With a related allowance recorded	0	0
Interest Income Recognized, With no related allowance recorded	0	0
Interest Income Recognized, With a related allowance recorded	0	0
Consumer and Other Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment, With no related allowance recorded	385,000	737,000	418,000
Recorded Investment, With a related allowance recorded	0	70,000	68,000
Unpaid Principal Balance, With no related allowance recorded	516,000	1,025,000	526,000
Unpaid Principal Balance, With a related allowance recorded	0	101,000	100,000
Related Allowance, With no related allowance recorded	0	0	0
Related Allowance, With a related allowance recorded	0	70,000	$ 68,000
Average Recorded Investment, With no related allowance recorded	401,000	867,000
Average Recorded Investment, With a related allowance recorded	0	85,000
Interest Income Recognized, With no related allowance recorded	0	0
Interest Income Recognized, With a related allowance recorded	$ 0	$ 0

Loans and Lease Finance Rece_12

Loans and Lease Finance Receivables and Allowance for Loan Losses - Summary of Activity Related to Troubled Debt Restructurings (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Financing Receivable, Modifications [Line Items]
Total TDRs	$ 3,417	$ 7,273	$ 3,417	$ 7,273
Performing TDRs [Member]
Financing Receivable, Modifications [Line Items]
Beginning balance	3,219	4,530	3,594	4,809
New modifications	0	0	0	311
Payoffs/payments, net and other	(51)	(777)	(426)	(1,367)
TDRs returned to accrual status	0	0	0	0
TDRs placed on nonaccrual status	0	0	0	0
Ending balance	3,168	3,753	3,168	3,753
Nonperforming TDRs [Member]
Financing Receivable, Modifications [Line Items]
Beginning balance	263	3,892	3,509	4,200
New modifications	0	278	0	316
Charge-offs	0	0	(78)	0
Transfer to OREO	0	0	(2,275)	0
Payoffs/payments, net and other	(14)	(650)	(907)	(996)
TDRs returned to accrual status	0	0	0	0
TDRs placed on nonaccrual status	0	0	0	0
Ending balance	$ 249	$ 3,520	$ 249	$ 3,520

Loans and Lease Finance Rece_13

Loans and Lease Finance Receivables and Allowance for Loan Losses - Summary of Loans Modified as Troubled Debt Restructurings (Detail) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019USD ($)Contract	Sep. 30, 2018USD ($)Contract
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings, Number of Loans | Contract	1	3
Troubled debt restructurings, Pre-Modification Outstanding Recorded Investment	$ 278	$ 627
Troubled debt restructurings, Post-Modification Outstanding Recorded Investment	278	627
Troubled debt restructurings, Outstanding Recorded Investment	272	603
Troubled debt restructurings, Financial Effect Resulting From Modifications	$ 0	$ 0
Commercial and Industrial [Member] | Interest rate reduction [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings, Number of Loans | Contract	0	0
Troubled debt restructurings, Pre-Modification Outstanding Recorded Investment	$ 0	$ 0
Troubled debt restructurings, Post-Modification Outstanding Recorded Investment	0	0
Troubled debt restructurings, Outstanding Recorded Investment	0	0
Troubled debt restructurings, Financial Effect Resulting From Modifications	$ 0	$ 0
Commercial and Industrial [Member] | Change in Amortization Period or Maturity [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings, Number of Loans | Contract	0	1
Troubled debt restructurings, Pre-Modification Outstanding Recorded Investment	$ 0	$ 38
Troubled debt restructurings, Post-Modification Outstanding Recorded Investment	0	38
Troubled debt restructurings, Outstanding Recorded Investment	0	27
Troubled debt restructurings, Financial Effect Resulting From Modifications	$ 0	$ 0
Commercial Real Estate Owner Occupied [Member] | Interest rate reduction [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings, Number of Loans | Contract	0	0
Troubled debt restructurings, Pre-Modification Outstanding Recorded Investment	$ 0	$ 0
Troubled debt restructurings, Post-Modification Outstanding Recorded Investment	0	0
Troubled debt restructurings, Outstanding Recorded Investment	0	0
Troubled debt restructurings, Financial Effect Resulting From Modifications	$ 0	$ 0
Commercial Real Estate Owner Occupied [Member] | Change in Amortization Period or Maturity [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings, Number of Loans | Contract	0	0
Troubled debt restructurings, Pre-Modification Outstanding Recorded Investment	$ 0	$ 0
Troubled debt restructurings, Post-Modification Outstanding Recorded Investment	0	0
Troubled debt restructurings, Outstanding Recorded Investment	0	0
Troubled debt restructurings, Financial Effect Resulting From Modifications	$ 0	$ 0
Commercial Real Estate Non-owner Occupied [Member] | Interest rate reduction [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings, Number of Loans | Contract	0	0
Troubled debt restructurings, Pre-Modification Outstanding Recorded Investment	$ 0	$ 0
Troubled debt restructurings, Post-Modification Outstanding Recorded Investment	0	0
Troubled debt restructurings, Outstanding Recorded Investment	0	0
Troubled debt restructurings, Financial Effect Resulting From Modifications	$ 0	$ 0
Commercial Real Estate Non-owner Occupied [Member] | Change in Amortization Period or Maturity [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings, Number of Loans | Contract	0	0
Troubled debt restructurings, Pre-Modification Outstanding Recorded Investment	$ 0	$ 0
Troubled debt restructurings, Post-Modification Outstanding Recorded Investment	0	0
Troubled debt restructurings, Outstanding Recorded Investment	0	0
Troubled debt restructurings, Financial Effect Resulting From Modifications	$ 0	$ 0
SFR Mortgage [Member] | Interest rate reduction [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings, Number of Loans | Contract	0	0
Troubled debt restructurings, Pre-Modification Outstanding Recorded Investment	$ 0	$ 0
Troubled debt restructurings, Post-Modification Outstanding Recorded Investment	0	0
Troubled debt restructurings, Outstanding Recorded Investment	0	0
Troubled debt restructurings, Financial Effect Resulting From Modifications	$ 0	$ 0
SFR Mortgage [Member] | Change in Amortization Period or Maturity [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings, Number of Loans | Contract	0	1
Troubled debt restructurings, Pre-Modification Outstanding Recorded Investment	$ 0	$ 311
Troubled debt restructurings, Post-Modification Outstanding Recorded Investment	0	311
Troubled debt restructurings, Outstanding Recorded Investment	0	304
Troubled debt restructurings, Financial Effect Resulting From Modifications	$ 0	$ 0
Consumer [Member] | Interest rate reduction [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings, Number of Loans | Contract	0	0
Troubled debt restructurings, Pre-Modification Outstanding Recorded Investment	$ 0	$ 0
Troubled debt restructurings, Post-Modification Outstanding Recorded Investment	0	0
Troubled debt restructurings, Outstanding Recorded Investment	0	0
Troubled debt restructurings, Financial Effect Resulting From Modifications	$ 0	$ 0
Consumer [Member] | Change in Amortization Period or Maturity [Member]
Financing Receivable, Modifications [Line Items]
Troubled debt restructurings, Number of Loans | Contract	1	1
Troubled debt restructurings, Pre-Modification Outstanding Recorded Investment	$ 278	$ 278
Troubled debt restructurings, Post-Modification Outstanding Recorded Investment	278	278
Troubled debt restructurings, Outstanding Recorded Investment	272	272
Troubled debt restructurings, Financial Effect Resulting From Modifications	$ 0	$ 0

Earnings Per Share Reconcilia_3

Earnings Per Share Reconciliation - Additional Information (Detail) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share [Abstract]
Antidilutive securities excluded from computation of earnings per common share	240,000	56,000	184,000	50,000

Earnings Per Share Reconcilia_4

Earnings Per Share Reconciliation - Schedule of Earnings Per Common Share Reconciliation (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings per common share:
Net earnings	$ 50,423	$ 38,558	$ 156,546	$ 108,844
Less: Net earnings allocated to restricted stock	116	96	390	298
Net earnings allocated to common shareholders	$ 50,307	$ 38,462	$ 156,156	$ 108,546
Weighted average shares outstanding	139,824	126,574	139,730	115,533
Basic earnings per common share	$ 0.36	$ 0.30	$ 1.12	$ 0.94
Diluted earnings per common share:
Net income allocated to common shareholders	$ 50,307	$ 38,462	$ 156,156	$ 108,546
Weighted average shares outstanding	139,824	126,574	139,730	115,533
Incremental shares from assumed exercise of outstanding options	151	363	217	397
Diluted weighted average shares outstanding	139,975	126,937	139,947	115,930
Diluted earnings per common share	$ 0.36	$ 0.30	$ 1.12	$ 0.94

Fair Value Information - Additi

Fair Value Information - Additional Information (Detail) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
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

Fair Value Information - Assets

Fair Value Information - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps, liabilities	$ 424,030	$ 444,193
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	16,180	1,938
Interest rate swaps, liabilities	16,180	1,938
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	1,586,586	1,736,023
Total liabilities	16,180	1,938
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	40,487	44,810
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	1,146,159	1,474,508
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	382,928	214,051
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	832	716
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	1,570,406	1,734,085
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	16,180	1,938
Interest rate swaps, liabilities	16,180	1,938
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	1,586,586	1,736,023
Total liabilities	16,180	1,938
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	40,487	44,810
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	1,146,159	1,474,508
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	382,928	214,051
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	832	716
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	1,570,406	1,734,085
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	16,180	1,938
Interest rate swaps, liabilities	$ 16,180	$ 1,938

Fair Value Information - Asse_2

Fair Value Information - Assets and Liabilities Measured at Fair Value on Non-Recurring Basis (Detail) - Fair Value on Non-Recurring Basis [Member] - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Description of assets
Total assets	$ 834	$ 561
Loans, Excluding PCI Loans [Member] | Asset Held-for-Sale [Member]
Description of assets
Total assets	0	0
Loans, Excluding PCI Loans [Member] | Commercial and Industrial [Member]
Description of assets
Total assets	254	3
Loans, Excluding PCI Loans [Member] | Small Business Administration [Member]
Description of assets
Total assets	516	0
Loans, Excluding PCI Loans [Member] | Commercial Real Estate [Member]
Description of assets
Total assets	0	478
Loans, Excluding PCI Loans [Member] | Construction [Member]
Description of assets
Total assets	0	0
Loans, Excluding PCI Loans [Member] | SFR Mortgage [Member]
Description of assets
Total assets	0	0
Loans, Excluding PCI Loans [Member] | Dairy & Livestock and Agribusiness [Member]
Description of assets
Total assets	0	12
Loans, Excluding PCI Loans [Member] | Consumer and Other Loans [Member]
Description of assets
Total assets	0	68
Loans, Excluding PCI Loans [Member] | Other Real Estate Owned [Member]
Description of assets
Total assets	64	0
Level 1 [Member]
Description of assets
Total assets	0	0
Level 1 [Member] | Loans, Excluding PCI Loans [Member] | Asset Held-for-Sale [Member]
Description of assets
Total assets	0	0
Level 1 [Member] | Loans, Excluding PCI Loans [Member] | Commercial and Industrial [Member]
Description of assets
Total assets	0	0
Level 1 [Member] | Loans, Excluding PCI Loans [Member] | Small Business Administration [Member]
Description of assets
Total assets	0	0
Level 1 [Member] | Loans, Excluding PCI Loans [Member] | Commercial Real Estate [Member]
Description of assets
Total assets	0	0
Level 1 [Member] | Loans, Excluding PCI Loans [Member] | Construction [Member]
Description of assets
Total assets	0	0
Level 1 [Member] | Loans, Excluding PCI Loans [Member] | SFR Mortgage [Member]
Description of assets
Total assets	0	0
Level 1 [Member] | Loans, Excluding PCI Loans [Member] | Dairy & Livestock and Agribusiness [Member]
Description of assets
Total assets	0	0
Level 1 [Member] | Loans, Excluding PCI Loans [Member] | Consumer and Other Loans [Member]
Description of assets
Total assets	0	0
Level 1 [Member] | Loans, Excluding PCI Loans [Member] | Other Real Estate Owned [Member]
Description of assets
Total assets	0	0
Level 2 [Member]
Description of assets
Total assets	0	0
Level 2 [Member] | Loans, Excluding PCI Loans [Member] | Asset Held-for-Sale [Member]
Description of assets
Total assets	0	0
Level 2 [Member] | Loans, Excluding PCI Loans [Member] | Commercial and Industrial [Member]
Description of assets
Total assets	0	0
Level 2 [Member] | Loans, Excluding PCI Loans [Member] | Small Business Administration [Member]
Description of assets
Total assets	0	0
Level 2 [Member] | Loans, Excluding PCI Loans [Member] | Commercial Real Estate [Member]
Description of assets
Total assets	0	0
Level 2 [Member] | Loans, Excluding PCI Loans [Member] | Construction [Member]
Description of assets
Total assets	0	0
Level 2 [Member] | Loans, Excluding PCI Loans [Member] | SFR Mortgage [Member]
Description of assets
Total assets	0	0
Level 2 [Member] | Loans, Excluding PCI Loans [Member] | Dairy & Livestock and Agribusiness [Member]
Description of assets
Total assets	0	0
Level 2 [Member] | Loans, Excluding PCI Loans [Member] | Consumer and Other Loans [Member]
Description of assets
Total assets	0	0
Level 2 [Member] | Loans, Excluding PCI Loans [Member] | Other Real Estate Owned [Member]
Description of assets
Total assets	0	0
Level 3 [Member]
Description of assets
Total assets	1,638	3,478
Level 3 [Member] | Loans, Excluding PCI Loans [Member] | Asset Held-for-Sale [Member]
Description of assets
Total assets	0	0
Level 3 [Member] | Loans, Excluding PCI Loans [Member] | Commercial and Industrial [Member]
Description of assets
Total assets	256	189
Level 3 [Member] | Loans, Excluding PCI Loans [Member] | Small Business Administration [Member]
Description of assets
Total assets	938	0
Level 3 [Member] | Loans, Excluding PCI Loans [Member] | Commercial Real Estate [Member]
Description of assets
Total assets	0	3,143
Level 3 [Member] | Loans, Excluding PCI Loans [Member] | Construction [Member]
Description of assets
Total assets	0	0
Level 3 [Member] | Loans, Excluding PCI Loans [Member] | SFR Mortgage [Member]
Description of assets
Total assets	0	0
Level 3 [Member] | Loans, Excluding PCI Loans [Member] | Dairy & Livestock and Agribusiness [Member]
Description of assets
Total assets	0	78
Level 3 [Member] | Loans, Excluding PCI Loans [Member] | Consumer and Other Loans [Member]
Description of assets
Total assets	0	68
Level 3 [Member] | Loans, Excluding PCI Loans [Member] | Other Real Estate Owned [Member]
Description of assets
Total assets	444	0
Carrying Value [Member]
Description of assets
Total assets	1,638	3,478
Carrying Value [Member] | Loans, Excluding PCI Loans [Member] | Asset Held-for-Sale [Member]
Description of assets
Total assets	0	0
Carrying Value [Member] | Loans, Excluding PCI Loans [Member] | Commercial and Industrial [Member]
Description of assets
Total assets	256	189
Carrying Value [Member] | Loans, Excluding PCI Loans [Member] | Small Business Administration [Member]
Description of assets
Total assets	938	0
Carrying Value [Member] | Loans, Excluding PCI Loans [Member] | Commercial Real Estate [Member]
Description of assets
Total assets	0	3,143
Carrying Value [Member] | Loans, Excluding PCI Loans [Member] | Construction [Member]
Description of assets
Total assets	0	0
Carrying Value [Member] | Loans, Excluding PCI Loans [Member] | SFR Mortgage [Member]
Description of assets
Total assets	0	0
Carrying Value [Member] | Loans, Excluding PCI Loans [Member] | Dairy & Livestock and Agribusiness [Member]
Description of assets
Total assets	0	78
Carrying Value [Member] | Loans, Excluding PCI Loans [Member] | Consumer and Other Loans [Member]
Description of assets
Total assets	0	68
Carrying Value [Member] | Loans, Excluding PCI Loans [Member] | Other Real Estate Owned [Member]
Description of assets
Total assets	$ 444	$ 0

Fair Value Information - Estima

Fair Value Information - Estimated Fair Value of Financial Instruments (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Dec. 31, 2017
Assets
Total cash and cash equivalents	$ 437,548	$ 163,948	$ 194,475	$ 144,377
Investment securities available-for-sale	1,570,406	1,734,085
Investment securities held-to-maturity	703,953	744,440
Total loans, net of allowance for loan losses	7,425,779	7,700,998
Deposits:
Interest-bearing	3,409,226	3,622,703
Junior subordinated debentures	25,774	25,774
Swaps	424,030	444,193
Carrying Value [Member]
Assets
Total cash and cash equivalents	437,548	163,948
Interest-earning balances due from depository institutions	5,673	7,670
Investment securities available-for-sale	1,570,406	1,734,085
Investment securities held-to-maturity	703,953	744,440
Total loans, net of allowance for loan losses	7,425,779	7,700,998
Swaps	16,180	1,938
Deposits:
Interest-bearing	3,409,226	3,622,703
Borrowings	412,764	722,255
Junior subordinated debentures	25,774	25,774
Swaps	16,180	1,938
Estimated Fair Value [Member]
Assets
Total cash and cash equivalents	437,548	163,948
Interest-earning balances due from depository institutions	5,793	7,339
Investment securities available-for-sale	1,570,406	1,734,085
Investment securities held-to-maturity	711,891	721,537
Total loans, net of allowance for loan losses	7,385,760	7,514,964
Swaps	16,180	1,938
Deposits:
Interest-bearing	3,407,573	3,614,682
Borrowings	412,372	721,601
Junior subordinated debentures	20,266	21,176
Swaps	16,180	1,938
Estimated Fair Value [Member] | Level 1 [Member]
Assets
Total cash and cash equivalents	437,548	163,948
Interest-earning balances due from depository institutions	0	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:
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	5,793	7,339
Investment securities available-for-sale	1,570,406	1,734,085
Investment securities held-to-maturity	711,891	721,537
Total loans, net of allowance for loan losses	0	0
Swaps	16,180	1,938
Deposits:
Interest-bearing	3,407,573	3,614,682
Borrowings	412,372	721,601
Junior subordinated debentures	0	0
Swaps	16,180	1,938
Estimated Fair Value [Member] | Level 3 [Member]
Assets
Total cash and cash equivalents	0	0
Interest-earning balances due from depository institutions	0	0
Investment securities available-for-sale	0	0
Investment securities held-to-maturity	0	0
Total loans, net of allowance for loan losses	7,385,760	7,514,964
Swaps	0	0
Deposits:
Interest-bearing	0	0
Borrowings	0	0
Junior subordinated debentures	20,266	21,176
Swaps	$ 0	$ 0

Derivative Financial Instrume_3

Derivative Financial Instruments - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2019USD ($)Agreement	Dec. 31, 2018USD ($)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative assets and liabilities offset in balance sheet	$ 0
Total notional amount of the Company's swaps	$ 227,200,000	$ 195,400,000
Description of Conditions Relating to Clearing of Interest rate Swaps	As a result of the Bank exceeding $10 billion in assets, federal regulations require the Bank, beginning in January 2019, to clear most interest rate swaps through a clearing house (“centrally cleared”). These instruments contain language outlining collateral pledging requirements for each counterparty, in which collateral must be posted if market value exceeds certain agreed upon threshold limits. Cash or securities are pledged as collateral.
Interest-rate Swap Agreements with Customers [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Number of interest-rate swap agreements | Agreement	82

Derivative Financial Instrume_4

Derivative Financial Instruments - Fair Value of Derivative Instruments (Detail) - Derivatives Not Designated as Hedging Instruments [Member] - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Other Assets [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	$ 16,180	$ 1,938
Other Assets [Member] | Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	16,180	1,938
Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	16,180	1,938
Other Liabilities [Member] | Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	$ 16,180	$ 1,938

Derivative Financial Instrume_5

Derivative Financial Instruments - Effect of Derivative Instruments on Consolidated Statement of Earnings (Detail) - Derivatives Not Designated as Hedging Instruments [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Derivatives, Fair Value [Line Items]
Amount of Gain Recognized in Income on Derivative Instruments	$ 378	$ 73	$ 1,135	$ 340
Interest Rate Swaps [Member] | Other Income [Member]
Derivatives, Fair Value [Line Items]
Amount of Gain Recognized in Income on Derivative Instruments	$ 378	$ 73	$ 1,135	$ 340

Other Comprehensive Income - Su

Other Comprehensive Income - Summary of Components of OCI (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Equity [Abstract]
Net change in fair value recorded in accumulated OCI, Before-tax	$ 5,672	$ (10,235)	$ 44,586	$ (47,346)
Net change in fair value recorded in accumulated OCI, Tax effect	(1,677)	3,025	(13,181)	13,997
Net change in fair value recorded in accumulated OCI, After-tax	3,995	(7,210)	31,405	(33,349)
Net realized gain reclassified into earnings Before-tax	(5)	0	(5)	0
Net realized gain reclassified into earnings Tax effect	1	0	1	0
Net realized gain reclassified into earnings After-tax	(4)	0	(4)	0
Amortization of unrealized losses on securities transferred from available-for-sale to held-to-maturity, Before-tax	(249)	(152)	(1,450)	(1,809)
Amortization of unrealized losses on securities transferred from available-for-sale to held-to-maturity, Tax effect	74	45	429	535
Amortization of unrealized losses on securities transferred from available-for-sale to held-to-maturity, After-tax	(175)	(107)	(1,021)	(1,274)
Net change, Before-tax	5,418	(10,387)	43,131	(49,155)
Net change, Tax effect	(1,602)	3,070	(12,751)	14,532
Net change, After-tax	$ 3,816	$ (7,317)	$ 30,380	$ (34,623)

Balance Sheet Offsetting - Sche

Balance Sheet Offsetting - Schedule of Balance Sheet Offsetting (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Offsetting Assets Liabilities [Line Items]
Financial liabilities, Gross Amounts Recognized in the Condensed Consolidated Balance Sheets	$ 424,032	$ 446,458
Financial liabilities, Gross Amounts Offset in the Condensed Consolidated Balance Sheets	(2)	(2,265)
Financial liabilities, Net Amounts Presented in the Condensed Consolidated Balance Sheets	424,030	444,193
Financial liabilities, Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Financial Instruments	2	2,265
Financial liabilities, Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Collateral Pledged	(441,800)	(487,607)
Financial liabilities, Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Net Amount	(17,768)	(41,149)
Repurchase Agreements [Member]
Offsetting Assets Liabilities [Line Items]
Financial liabilities, Gross Amounts Recognized in the Condensed Consolidated Balance Sheets	407,850	442,255
Financial liabilities, Gross Amounts Offset in the Condensed Consolidated Balance Sheets	0	0
Financial liabilities, Net Amounts Presented in the Condensed Consolidated Balance Sheets	407,850	442,255
Financial liabilities, Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Financial Instruments	0	0
Financial liabilities, Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Collateral Pledged	(419,465)	(487,607)
Financial liabilities, Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Net Amount	(11,615)	(45,352)
Interest Rate Swaps [Member]
Offsetting Assets Liabilities [Line Items]
Financial assets, Gross Amounts Recognized in the Condensed Consolidated Balance Sheets	16,180	1,938
Financial assets, Gross Amounts Offset in the Condensed Consolidated Balance Sheets	0	0
Financial assets, Net Amounts Presented in the Condensed Consolidated Balance Sheets	0	0
Financial assets, Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Financial Instruments	16,180	1,938
Financial assets, Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Collateral Pledged	0	0
Financial assets, Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Net Amount	16,180	1,938
Interest Rate Swaps [Member] | Derivatives Not Designated as Hedging Instruments [Member]
Offsetting Assets Liabilities [Line Items]
Financial assets, Gross Amounts Recognized in the Condensed Consolidated Balance Sheets	16,180	1,938
Financial assets, Gross Amounts Offset in the Condensed Consolidated Balance Sheets	0	0
Financial assets, Net Amounts Presented in the Condensed Consolidated Balance Sheets	0	0
Financial assets, Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Financial Instruments	16,180	1,938
Financial assets, Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Collateral Pledged	0	0
Financial assets, Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Net Amount	16,180	1,938
Financial liabilities, Gross Amounts Recognized in the Condensed Consolidated Balance Sheets	16,182	4,203
Financial liabilities, Gross Amounts Offset in the Condensed Consolidated Balance Sheets	(2)	(2,265)
Financial liabilities, Net Amounts Presented in the Condensed Consolidated Balance Sheets	16,180	1,938
Financial liabilities, Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Financial Instruments	2	2,265
Financial liabilities, Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Collateral Pledged	(22,335)	0
Financial liabilities, Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Net Amount	$ (6,153)	$ 4,203

Leases - Components of lease co

Leases - Components of lease costs and supplemental information related to leases (Detail) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019USD ($)	Sep. 30, 2019USD ($)
Lease Assets and Liabilities
ROU assets	$ 17,340	$ 17,340
Total lease liabilities	20,558	20,558
Lease Cost
Operating lease expense	1,628	5,634
Total lease expense	1,628	5,634
Other Information
Operating cash outflows from operating leases	$ 1,640	$ 6,499
Lease Term and Discount Rate
Weighted average remaining lease term (years)	4 years 3 months 3 days	4 years 3 months 3 days
Weighted average discount rate	3.46%	3.46%

Leases - Future lease payments

Leases - Future lease payments required for leases that have initial or remaining non-cancelable lease terms (Detail) $ in Thousands	Sep. 30, 2019USD ($)
2019 (excluding the nine months ended September 30, 2019)	$ 1,973
2020	6,941
2021	5,178
2022	4,005
2023	2,336
Thereafter	3,100
Total future lease payments	23,533
Less: Imputed interest	(2,975)
Present value of lease liabilities	$ 20,558

Revenue Recognition - Summary o

Revenue Recognition - Summary of Non Interest Income, Segregated by Revenue Streams in-Scope and Out-of-Scope of Topic 606 (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Noninterest income:
Gain on OREO, net			$ 105	$ 3,540
Other	$ 2,297	$ 1,824	6,944	4,393
Total noninterest income	11,894	10,112	46,402	32,723
Service Charges on Deposit Accounts [Member]
Noninterest income:
Revenue from contract with customer	4,833	4,295	15,039	12,431
Trust and Investment Services [Member]
Noninterest income:
Revenue from contract with customer	2,330	2,182	6,964	6,738
Bankcard Services [Member]
Noninterest income:
Revenue from contract with customer	637	875	2,614	2,637
Accounting Standards Update 2014-09 [Member]
Noninterest income:
Gain on OREO, net	0	0	129	3,540
Other	2,292	1,824	6,939	4,393
Total noninterest income	10,092	9,176	31,685	29,739
Accounting Standards Update 2014-09 [Member] | Service Charges on Deposit Accounts [Member]
Noninterest income:
Revenue from contract with customer	4,833	4,295	15,039	12,431
Accounting Standards Update 2014-09 [Member] | Trust and Investment Services [Member]
Noninterest income:
Revenue from contract with customer	2,330	2,182	6,964	6,738
Accounting Standards Update 2014-09 [Member] | Bankcard Services [Member]
Noninterest income:
Revenue from contract with customer	637	875	2,614	2,637
Accounting Standards Update 2014-09 Not Adopted [Member]
Noninterest income:
Total noninterest income	$ 1,802	$ 936	$ 14,717	$ 2,984