CVB Financial (CVBF) 10-Q 11 May 20 2020 Q1 Quarterly report Financial data

Cover Page

Cover Page - shares	3 Months Ended
	Mar. 31, 2020	Apr. 30, 2020
Cover [Abstract]
Document Type	10-Q
Current Fiscal Year End Date	--12-31
Entity Central Index Key	0000354647
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2020
Amendment Flag	false
Document Quarterly Report	true
Document Transition Report	false
Entity Interactive Data Current	Yes
Document Period End Date	Mar. 31, 2020
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		135,510,811

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Assets
Cash and due from banks	$ 138,615	$ 158,310
Interest-earning balances due from Federal Reserve	567,124	27,208
Total cash and cash equivalents	705,739	185,518
Interest-earning balances due from depository institutions	23,799	2,931
Investment securities available-for-sale, at fair value (with amortized cost of $1,621,236 at March 31, 2020, and $1,718,357 at December 31, 2019)	1,679,755	1,740,257
Investment securities held-to-maturity (with fair value of $657,819 at March 31, 2020, and $678,948 at December 31, 2019)	642,255	674,452
Total investment securities	2,322,010	2,414,709
Investment in stock of Federal Home Loan Bank (FHLB)	17,688	17,688
Loans and lease finance receivables	7,466,152	7,564,577
Allowance for credit losses	(82,641)	(68,660)
Net loans and lease finance receivables	7,383,511	7,495,917
Premises and equipment, net	52,867	53,978
Bank owned life insurance (BOLI)	225,455	226,281
Accrued interest receivable	26,855	28,122
Intangibles	40,541	42,986
Goodwill	663,707	663,707
Other real estate owned (OREO)	4,889	4,889
Income taxes	10,473	35,587
Other assets	129,354	110,137
Total assets	11,606,888	11,282,450
Deposits:
Noninterest-bearing	5,572,649	5,245,517
Interest-bearing	3,540,955	3,459,411
Total deposits	9,113,604	8,704,928
Customer repurchase agreements	368,915	428,659
Other borrowings	0	0
Deferred compensation	22,454	22,666
Junior subordinated debentures	25,774	25,774
Other liabilities	134,755	106,325
Total liabilities	9,665,502	9,288,352
Stockholders' Equity
Common stock, authorized, 225,000,000 shares without par; issued and outstanding 135,510,960 at March 31, 2020, and 140,102,480 at December 31, 2019	1,208,049	1,298,792
Retained earnings	694,931	682,692
Accumulated other comprehensive income (loss), net of tax	38,406	12,614
Total stockholders' equity	1,941,386	1,994,098
Total liabilities and stockholders' equity	$ 11,606,888	$ 11,282,450

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Amortized cost	$ 1,621,236	$ 1,718,357
Fair Value, Held-to-maturity	$ 657,819	$ 678,948
Common stock, par value	$ 0	$ 0
Common stock, authorized	225,000,000	225,000,000
Common stock, shares issued	135,510,960	140,102,480
Common stock, shares outstanding	135,510,960	140,102,480

Condensed Consolidated Statemen

Condensed Consolidated Statements of Earnings and Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Interest income:
Loans and leases, including fees	$ 92,117	$ 99,687
Investment securities:
Investment securities available-for-sale	10,049	10,645
Investment securities held-to-maturity	3,998	4,525
Total investment income	14,047	15,170
Dividends from FHLB stock	332	332
Interest-earning deposits with other institutions	613	94
Total interest income	107,109	115,283
Interest expense:
Deposits	4,124	3,871
Borrowings and customer repurchase agreements	479	1,610
Junior subordinated debentures	200	266
Total interest expense	4,803	5,747
Net interest income before provision for credit losses	102,306	109,536
Provision for credit losses	12,000	1,500
Net interest income after provision for credit losses	90,306	108,036
Noninterest income:
BOLI income	2,059	1,336
Gain on OREO, net	10	105
Gain on sale of building, net	0	4,545
Other	1,798	2,044
Total noninterest income	11,640	16,303
Noninterest expense:
Salaries and employee benefits	30,877	29,302
Occupancy and equipment	4,837	5,424
Professional services	2,256	1,925
Software licenses and maintenance	2,816	2,613
Marketing and promotion	1,555	1,394
Amortization of intangible assets	2,445	2,857
Acquisition related expenses	0	3,149
Other	3,855	4,940
Total noninterest expense	48,641	51,604
Earnings before income taxes	53,305	72,735
Income taxes	15,325	21,093
Net earnings	37,980	51,642
Other comprehensive income:
Unrealized gain on securities arising during the period, before tax	36,618	18,227
Less: Income tax benefit related to items of other comprehensive income	(10,826)	(5,388)
Other comprehensive income, net of tax	25,792	12,839
Comprehensive income	$ 63,772	$ 64,481
Basic earnings per common share	$ 0.27	$ 0.37
Diluted earnings per common share	$ 0.27	$ 0.37
Service Charges on Deposit Accounts [Member]
Noninterest income:
Revenue from contract with customer, including assessed tax	$ 4,776	$ 5,141
Trust and Investment Services [Member]
Noninterest income:
Revenue from contract with customer, including assessed tax	2,420	2,182
Bankcard Services [Member]
Noninterest income:
Revenue from contract with customer, including assessed tax	$ 577	$ 950

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
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	(735)	$ (735)
Repurchase of common stock, shares		(33)
Exercise of stock options	140	$ 140
Exercise of stock options, shares		9
Shares issued pursuant to stock-based compensation plan	1,019	$ 1,019
Shares issued pursuant to stock-based compensation plan, shares		33
Cash dividends declared on common stock ($0.18 per share)	(25,168)		(25,168)
Net earnings	51,642		51,642
Other comprehensive income	12,839
Ending balance at Mar. 31, 2019	1,890,927	$ 1,294,093	602,279	(5,445)
Ending balance, shares at Mar. 31, 2019		140,009
Beginning balance at Dec. 31, 2019	1,994,098	$ 1,298,792	682,692	12,614
Beginning balance, shares at Dec. 31, 2019		140,102
Cumulative adjustment upon adoption of ASU 2016-13 at Dec. 31, 2019	(1,325)		(1,325)
Repurchase of common stock	(92,402)	$ (92,402)
Repurchase of common stock, shares		(4,988)
Exercise of stock options	42	$ 42
Exercise of stock options, shares		4
Shares issued pursuant to stock-based compensation plan	1,617	$ 1,617
Shares issued pursuant to stock-based compensation plan, shares		393
Cash dividends declared on common stock ($0.18 per share)	(24,416)		(24,416)
Net earnings	37,980		37,980
Other comprehensive income	25,792			25,792
Ending balance at Mar. 31, 2020	$ 1,941,386	$ 1,208,049	$ 694,931	$ 38,406
Ending balance, shares at Mar. 31, 2020		135,511

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Stockholders' Equity [Abstract]
Cash dividends per common share	$ 0.18	$ 0.18

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash Flows from Operating Activities
Interest and dividends received	$ 105,673	$ 109,857
Service charges and other fees received	9,644	10,247
Interest paid	(4,589)	(5,336)
Net cash paid to vendors, employees and others	(35,201)	(60,281)
Net cash provided by operating activities	75,527	54,487
Cash Flows from Investing Activities
Net change in interest-earning balances from depository institutions	(20,868)	250
Proceeds from repayment of investment securities available-for-sale	92,519	77,303
Proceeds from maturity of investment securities available-for-sale	2,390	565
Proceeds from repayment and maturity of investment securities held-to-maturity	33,297	29,598
Purchases of investment securities held-to-maturity	(1,509)	(19,844)
Net increase in equity investments	(2,985)	(2,314)
Net decrease (increase) in loan and lease finance receivables	103,890	163,588
Proceeds from sale of building, net	0	5,487
Purchase of premises and equipment	(882)	(1,490)
Proceeds from BOLI death benefit	138	175
Proceeds from sales of other real estate owned	0	523
Net cash provided by investing activities	205,990	253,841
Cash Flows from Financing Activities
Net increase (decrease) in other deposits	403,546	(156,745)
Net increase (decrease) in time deposits	5,130	(16,625)
Net decrease in other borrowings	0	(127,000)
Net (decrease) increase in customer repurchase agreements	(59,744)	20,519
Cash dividends on common stock	(25,252)	(19,616)
Repurchase of common stock	(85,018)	(735)
Proceeds from exercise of stock options	42	140
Net cash provided by (used in) financing activities	238,704	(300,062)
Net increase in cash and cash equivalents	520,221	8,266
Cash and cash equivalents, beginning of period	185,518	163,948
Cash and cash equivalents, end of period	705,739	172,214
Reconciliation of Net Earnings to Net Cash Provided by Operating Activities
Net earnings	37,980	51,642
Adjustments to reconcile net earnings to net cash provided by operating activities:
Gain on sale of building, net	0	(4,545)
Gain on sale of other real estate owned	0	(105)
Increase in BOLI	(1,344)	(1,427)
Net amortization of premiums and discounts on investment securities	2,620	2,498
Accretion of discount for acquired loans, net	(4,776)	(7,200)
Provision for credit losses	12,000	1,500
Stock-based compensation	1,617	1,019
Depreciation and amortization, net	5,176	5,669
Change in other assets and liabilities	22,254	5,436
Total adjustments	37,547	2,845
Net cash provided by operating activities	75,527	54,487
Supplemental Disclosure of Non-cash Investing Activities
Transfer of loans to other real estate owned	$ 0	$ 2,275

Business

Business	3 Months Ended
	Mar. 31, 2020
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 its CitizensTrust Division. The Bank’s customers consist primarily of small to mid-sized

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2020
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	3 Months Ended
	Mar. 31, 2020
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-K”). Use of Estimates in the Preparation of Financial Statements credit Adoption of New Accounting Standard Provision and Allowance for Credit Losses 2016-13, held-to-maturity available-for-sale securities, as well as AFS securities, and disclose total accrued interest receivable separately on the condensed consolidated balance sheet. If accrued interest is not received, it is reversed against interest income, which was zero for the first quarter of 2020. The Company adopted this ASU using the modified retrospective method for all financial assets measured at amortized cost and off-balance Upon adoption of CECL there was no impact on the accounting for AFS or HTM investment securities. The Company developed a CECL allowance model that calculates reserves over the life of the loan and is largely driven by portfolio characteristics, risk grading, macroeconomic variables and the associated economic outlook, as well as other key methodology assumptions. The allowance is based upon historical lifetime loss rate models segregated by three loan segments: Commercial and Industrial, Commercial Real Estate, and Consumer Retail. In addition to determining the quantitative life of loan loss rate to be applied against the portfolio segments, the ASU indicates management has the opportunity to layer on current conditions and forecast adjustments to ensure that the life of loan loss rate reflects both the current state of the portfolio, and expectations for macroeconomic changes in the near future. We utilized a single economic forecast that is based on probability weighted scenarios to incorporate macroeconomic uncertainty over a 2 or 3-year During the second half of March 2020, the broader economy experienced a significant deterioration in the economic environment driven by the COVID-19 pandemic resulting in adverse changes to the forecasted macroeconomic variables utilized in our modeling processes. This expected economic deterioration, coupled with the implementation of the expected loss methodology for determining our provision for credit losses, have contributed to an increased provision for credit losses of $12 million for the first quarter of 2020. We continue to monitor the impact of COVID-19 closely, as well as any effects that may result from the CARES Act. The extent to which the COVID-19 pandemic will impact our operations and financial results during the remainder of 2020 is highly uncertain, but we may experience increased provision for credit losses if the COVID-19 pandemic results in additional economic stress on our borrowers and loan portfolios.

Investment Securities

Investment Securities	3 Months Ended
	Mar. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Investment Securities	4. INVESTMENT SECURITIES The amortized cost and estimated fair value of investment securities are summarized below. The majority of securities held are available-for-sale March 31, 2020 Amortized Gross Holding Gain Gross Loss (Dollars in thousands) Investment securities available-for-sale: Mortgage-backed securities $ 1,118,385 $ 43,546 $ - $ 1,161,931 69.18% CMO/REMIC 466,033 14,060 - 480,093 28.58% Municipal bonds 36,119 913 - 37,032 2.20% Other securities 699 - - 699 0.04% Total available-for-sale $ 1,621,236 $ 58,519 $ - $ 1,679,755 100.00% Investment securities held-to-maturity: Government agency/GSE $ 111,452 $ 3,468 $ (207) $ 114,713 17.35% Mortgage-backed securities 161,983 8,182 - 170,165 25.22% CMO/REMIC 184,316 591 (98) 184,809 28.70% Municipal bonds 184,504 4,054 (426) 188,132 28.73% Total held-to-maturity $ 642,255 $ 16,295 $ (731) $ 657,819 100.00% December 31, 2019 Amortized Cost Gross Holding Gain Gross Holding Loss Fair Value Total Percent (Dollars in thousands) Investment securities available-for-sale: Mortgage-backed securities $ 1,185,757 $ 21,306 $ (750) $ 1,206,313 69.32% CMO/REMIC 493,214 1,392 (896) 493,710 28.37% Municipal bonds 38,506 850 (2) 39,354 2.26% Other securities 880 - - 880 0.05% Total available-for-sale $ 1,718,357 $ 23,548 $ (1,648) $ 1,740,257 100.00% Investment securities held-to-maturity: Government agency/GSE $ 117,366 $ 2,280 $ (657) $ 118,989 17.40% Mortgage-backed securities 168,479 2,083 (54) 170,508 24.98% CMO/REMIC 192,548 - (2,458) 190,090 28.55% Municipal bonds 196,059 3,867 (565) 199,361 29.07% Total held-to-maturity $ 674,452 $ 8,230 $ (3,734) $ 678,948 100.00% 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. Three Months Ended March 31, 2020 2019 (Dollars in thousands) Investment securities available-for-sale: Taxable $ 9,825 $ 10,309 Tax-advantaged 224 336 Total interest income from available-for-sale 10,049 10,645 Investment securities held-to-maturity: Taxable 2,698 2,910 Tax-advantaged 1,300 1,615 Total interest income from held-to-maturity 3,998 4,525 Total interest income from investment securities $ 14,047 $ The adoption of CECL did not have a material impact on the accounting for investment securities, as approximately 90% of the total investment securities portfolio at March 31, 2020 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 remaining securities are predominately AA- or better general-obligation municipal bonds. The allowance for credit losses for held-to-maturity We adopted ASU 2016-13 prospective available-for-sale held-to-maturity 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 December 31, 2019, prior to adoption of ASU 2016-13. Management previously . December Less Than 12 Months 12 Months or Longer Total Fair Value Gross Fair Value Gross Fair Value Gross (Dollars in thousands) Investment securities available-for-sale: Mortgage-backed securities $ 20,289 $ (6 ) $ 97,964 $ (744 ) $ 118,253 $ (750 ) CMO/REMIC 177,517 (705 ) 34,565 (191 ) 212,082 (896 ) Municipal bonds - - 563 (2 ) 563 (2 ) Total available-for-sale $ $ (711 ) $ $ (937 ) $ $ (1,648 ) Investment securities held-to-maturity: Government agency/GSE $ 28,359 $ (252 ) $ 19,405 $ (405 ) $ 47,764 $ (657 ) Mortgage-backed securities 10,411 (54 ) - - 10,411 (54 ) CMO/REMIC 23,897 (104 ) 166,193 (2,354 ) 190,090 (2,458 ) Municipal bonds 7,583 (32 ) 29,981 (533 ) 37,564 (565 ) Total held-to-maturity $ 70,250 $ ) $ 215,579 $ ) $ 285,829 $ ) At March 31, 2020 and December 31, 2019, investment securities having a carrying value of approximately $1.63 billion and $1.64 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 March 31, 2020, by contractual maturity, are shown in the table below. Although mortgage-backed and CMO/REMIC securities have contractual maturities through 2058, expected maturities will differ from contractual maturities because borrowers may have the right to prepay such obligations without penalty. Mortgage-backed and CMO/REMIC securities are included in maturity categories based upon estimated average lives , March 31, 2020 Available-for-sale Held-to-maturity Amortized Fair Value Amortized Cost Fair Value (Dollars in thousands) Due in one year or less $ 13,043 $ 13,160 $ 768 $ 788 Due after one year through five years 1,376,413 1,427,373 358,973 367,734 Due after five years through ten years 176,690 182,573 103,004 104,787 Due after ten years 55,090 56,649 179,510 184,510 Total investment securities $ $ $ $ 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. No impairment losses have been recorded March 31, 2020.

Loans and Lease Finance Receiva

Loans and Lease Finance Receivables and Allowance for Loan Losses	3 Months Ended
	Mar. 31, 2020
Receivables [Abstract]
Loans and Lease Finance Receivables and Allowance for Loan Losses	5. LOANS AND LEASE FINANCE RECEIVABLES AND ALLOWANCE FOR CREDIT LOSSES The following table provides a summary of total loans and lease finance receivables by type. (Dollars in thousands) Commercial and industrial $ 960,761 $ 935,127 SBA 313,071 305,008 Real estate: Commercial real estate 5,347,925 5,374,617 Construction 128,045 116,925 SFR mortgage 278,743 283,468 Dairy & livestock and agribusiness 272,114 383,709 Municipal lease finance receivables 51,287 53,146 Consumer and other loans 114,206 116,319 Gross loans 7,466,152 7,568,319 Less: Deferred loan fees, net (1) - (3,742 ) Gross loans, net of deferred loan fees 7,466,152 7,564,577 Less: Allowance for credit (82,641 ) (68,660 ) Total loans and lease finance receivables $ 7,383,511 $ 7,495,917 (1) Beginning with March 31, 2020, gross loans are presented net of deferred loan fees by respective class of financing receivables. As of March 31, 2020, 77.08% of the Company’s total gross loan portfolio consisted of real estate loans, with commercial real estate loans representing 71.63% of total loans. Substantially all of the Company’s real estate loans and construction loans are secured by real properties located in California. As of March 31, 2020, $248.2 million, or 4.64% of the total commercial real estate loans included loans secured by farmland, compared to $241.8 million, or 4.50%, at December 31, 2019. The loans secured by farmland included $122.5 million for loans secured by dairy & livestock land and $125.7 million for loans secured by agricultural land at March 31, 2020, compared to $125.9 million for loans secured by dairy & livestock land and $115.9 million for loans secured by agricultural land at December 31, 2019. As of March 31, 2020, dairy & livestock and agribusiness loans of $272.1 million were comprised of $218.0 million for dairy & livestock loans and $54.1 million for agribusiness loans, compared to $323.5 million for dairy & livestock loans and $60.2 million for agribusiness loans at December 31, 2019. At March 31, 2020 and December 31, 2019, loans totaling $6.06 billion and $6.03 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 on an ongoing basis 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 and origination year, according to our internal risk ratings as of the date presented. Origination Year Revolving Revolving March 31, 2020 2020 2019 2018 2017 2016 Prior Total (Dollars in thousands) Commercial and industrial loans: Risk Rating: Pass $ 35,101 $ 160,551 $ 79,808 $ 74,291 $ 48,698 $ 85,803 $ 423,186 $ 8,849 $ 916,287 Special Mention 1,066 257 7,405 1,694 539 3,524 12,598 2,442 29,525 Substandard - 143 796 855 637 37 11,256 1,225 14,949 Doubtful & Loss - - - - - - - - - Total Commercial and industrial loans: $ 36,167 $ 160,951 $ 88,009 $ 76,840 $ 49,874 $ 89,364 $ 447,040 $ 12,516 $ 960,761 SBA: Risk Rating: Pass $ 26,599 $ 18,009 $ 48,416 $ 77,219 $ 27,922 $ 93,865 $ - $ - $ 292,030 Special Mention - - - 1,177 1,277 7,809 - - 10,263 Substandard - - 1,424 3,835 1,604 3,915 - - 10,778 Doubtful & Loss - - - - - - - - - Total SBA: $ 26,599 $ 18,009 $ 49,840 $ 82,231 $ 30,803 $ 105,589 $ - $ - $ 313,071 Commercial real estate loans: Risk Rating: Pass $ 153,366 $ 726,268 $ 743,909 $ 732,319 $ 626,561 $ 2,021,759 $ 197,335 $ 18,747 $ 5,220,264 Special Mention - 5,343 9,106 16,484 7,211 52,995 3,457 - 94,596 Substandard - - 5,155 5,813 1,315 18,819 250 1,713 33,065 Doubtful & Loss - - - - - - - - - Total Commercial real estate loans: $ 153,366 $ 731,611 $ 758,170 $ 754,616 $ 635,087 $ 2,093,573 $ 201,042 $ 20,460 $ 5,347,925 Construction loans: Risk Rating: Pass $ 550 $ 13,414 $ 13,300 $ 35,130 $ 10,592 $ 5 $ 49,591 $ 5,463 $ 128,045 Special Mention - - - - - - - - - Substandard - - - - - - - - - Doubtful & Loss - - - - - - - - - Total Construction loans: $ 550 $ 13,414 $ 13,300 $ 35,130 $ 10,592 $ 5 $ 49,591 $ 5,463 $ 128,045 SFR mortgage loans: Risk Rating: Pass $ 10,473 $ 66,680 $ 38,192 $ 26,819 $ 35,992 $ 96,795 $ - $ - $ 274,951 Special Mention - - - - - 1,942 - - 1,942 Substandard - - - 379 - 1,025 - 446 1,850 Doubtful & Loss - - - - - - - - - Total SFR mortgage loans: $ 10,473 $ 66,680 $ 38,192 $ 27,198 $ 35,992 $ 99,762 $ - $ 446 $ 278,743 Origination Year Revolving Revolving March 31, 2020 2020 2019 2018 2017 2016 Prior Total (Dollars in thousands) Dairy & livestock and agribusiness loans: Risk Rating: Pass $ 78 $ 2,945 $ 1,940 $ 8,109 $ 2,831 $ 14,655 $ 192,649 $ - $ 223,207 Special Mention - - 166 722 - - 22,150 3,686 26,724 Substandard - - 882 - 4,016 - 4,625 12,660 22,183 Doubtful & Loss - - - - - - - - - Total Dairy & livestock and agribusiness loans: $ 78 $ 2,945 $ 2,988 $ 8,831 $ 6,847 $ 14,655 $ 219,424 $ 16,346 $ 272,114 Municipal lease finance receivables loans: Risk Rating: Pass $ 147 $ - $ 3,081 $ 10,961 $ 7,912 $ 28,739 $ - $ - $ 50,840 Special Mention - - - - - 447 - - 447 Substandard - - - - - - - - - Doubtful & Loss - - - - - - - - - Total Municipal lease finance receivables loans: $ 147 $ - $ 3,081 $ 10,961 $ 7,912 $ 29,186 $ - $ - $ 51,287 Consumer and other loans: Risk Rating: Pass $ 1,647 $ 3,197 $ 1,160 $ 1,372 $ 2,094 $ 2,612 $ 98,953 $ 1,582 $ 112,617 Special Mention - - - - 80 148 609 - 837 Substandard - - 5 - - 179 148 420 752 Doubtful & Loss - - - - - - - - - Total Consumer and other loans: $ 1,647 $ 3,197 $ 1,165 $ 1,372 $ 2,174 $ 2,939 $ 99,710 $ 2,002 $ 114,206 Gross loans: Risk Rating: Pass $ 227,961 $ 991,064 $ 929,806 $ 966,220 $ 762,602 $ 2,344,233 $ 961,714 $ 34,641 $ 7,218,241 Special Mention 1,066 5,600 16,677 20,077 9,107 66,865 38,814 6,128 164,334 Substandard - 143 8,262 10,882 7,572 23,975 16,279 16,464 83,577 Doubtful & Loss - - - - - - - - - Total Gross loans: $ 229,027 $ 996,807 $ 954,745 $ 997,179 $ 779,281 $ 2,435,073 $ 1,016,807 $ 57,233 $ 7,466,152 The following table summarizes lo an December 31, 2019 Pass Special Substandard Doubtful & Total (Dollars in thousands) Commercial and industrial $ 895,234 $ 35,473 $ 4,420 $ - $ 935,127 SBA 283,430 11,032 10,546 - 305,008 Real estate: Commercial real estate Owner occupied 1,977,007 78,208 28,435 - 2,083,650 Non-owner 3,280,580 10,005 382 - 3,290,967 Construction Speculative 106,895 - - - 106,895 Non-speculative 10,030 - - - 10,030 SFR mortgage 280,010 1,957 1,501 - 283,468 Dairy & livestock and agribusiness 320,670 35,920 27,119 - 383,709 Municipal lease finance receivables 52,676 470 - - 53,146 Consumer and other loans 114,870 421 1,028 - 116,319 Total gross loans $ 7,321,402 $ 173,486 $ 73,431 $ $ 7,568,319 Allowance for Credit Losses The allowance for credit losses for 2020 is based upon historical lifetime loss rate models segregated by three loan segments: Commercial and Industrial, Commercial Real Estate, and Consumer Retail. Our methodology for assessing the appropriateness of the allowance is reviewed on a regular basis and considers overall risks in the Bank’s loan portfolio. Refer to Note 3 – Summary of Significant Accounting Policies During the second half of March 2020, the broader economy experienced a significant deterioration in the economic environment driven by the COVID-19 variables utilized in our modeling processes. For the quarter ended March 31, 2020, the Bank’s CECL methodology produced an ACL of $82.6 million, resulting in a provision for credit losses of $12.0 million. The ACL/Total Loan Coverage Ratio as of March 31, 2020 increased to 1.11%, compared to 0.93% as of January 1, 2020 due to the more severe economic forecast that resulted from the COVID-19 crisis. Our economic forecast is a blend of multiple forecasts produced by Moody’s. The resulting forecast assumes a decline in GDP for the second quarter of almost 20% and unemployment rising to more than 9% in the second quarter of 2020. GDP is forecasted to rebound to growth of approximately 10% in the third quarter of 2020, but unemployment continues to be inflated at more than 6% through the remainder of 2020. Management believes that the ACL was appropriate at March 31, 2020 and December 31, 2019. No assurance can be given that economic conditions that adversely affect the Company’s service areas or other circumstances will not be reflected in increased provisions for credit losses in the future. The following tables present the balance and activity related to the allowance for credit losses for held-for-investment Three Months Ended March 31, 2020 Ending Balance, prior to adoption of ASU 2016-13 December 31, 2019 Impact of Provision for (Recapture of) Credit Losses Expense Charge-offs Recoveries Ending Balance (Dollars i Commercial and industrial $ 8,880 $ (2,442 ) $ 2,947 $ - $ 2 $ 9,387 SBA 1,453 1,818 675 - - 3,946 Real estate: Commercial real estate 48,629 3,547 6,251 - - 58,427 Construction 858 655 3,116 - 3 4,632 SFR mortgage 2,339 (2,043 ) (221 ) - 206 281 Dairy & livestock and agribusiness 5,255 (186 ) (803 ) - - 4,266 Municipal lease finance receivables 623 (416 ) 70 - - 277 Consumer and other loans 623 907 (35 ) (86 ) 16 1,425 Total allowance for credit losses $ 68,660 $ 1,840 $ 12,000 $ (86 ) $ 227 $ 82,641 Three Months Ended March 31, 2019 Ending Balance December 31, Charge-offs Recoveries Provision for (Recapture of) Loan Losses Ending Balance March 31, 2019 (Dollars in thousands) Commercial and industrial $ 7,520 $ - $ 110 $ (31 ) $ 7,599 SBA 1,062 (20 ) 5 232 1,279 Real estate: - - Commercial real estate 44,934 - - 1,144 46,078 Construction 981 - 3 (120 ) 864 SFR mortgage 2,196 - 68 (76 ) 2,188 Dairy & livestock and agribusiness 5,215 (78 ) - 562 5,699 Municipal lease finance receivabl es 775 - - (37 ) 738 Consumer and other loans 726 (1 ) 1 (150 ) 576 PCI loans 204 - - (24 ) 180 Total allowance for loan losses $ 63,613 $ (99 ) $ 187 $ 1,500 $ 65,201 The following table presents the recorded investment in loans held-for-investment ACL ACL March 31, 2019 Recorded Investment in Loans Allowance for Loan Losses Individually Collectively Acquired with Individually Collectively Acquired with (Dollars in thousands) Commercial and industrial $ 8,512 $ 948,614 $ - $ 117 $ 7,482 $ - SBA 4,661 333,296 - 317 962 - Real estate: Commercial real estate 1,589 5,387,277 - - 46,078 - Construction - 121,912 - - 864 - SFR mortgage 5,051 280,736 - - 2,188 - Dairy & livestock and agribusiness - 322,321 - - 5,699 - Municipal lease finance receivables - 61,249 - - 738 - Consumer and other loans 477 120,291 - 1 575 - PCI loans - - 15,356 - - 180 Total $ 20,290 $ 7,575,696 $ 15,356 $ 435 $ 64,586 $ 180 Past Due and Nonperforming Loans We seek to manage asset quality 3 – Summary of Significant Accounting Policies, included in our Annual Report on Form 10- K for the year ended December 31, 2019, for additional discussion concerning the Bank’s policy for past due and nonperforming loans. The following table presents the recorded investment in, and the ag in ent March 31, 2020 30-59 60-89 Greater than 89 Days Total Past Loans Not Total Loans (Dollars in thousands) Commercial and industrial $ 347 $ 362 $ 1,487 $ 2,196 $ 958,565 $ 960,761 SBA 3,086 954 1,669 5,709 307,362 313,071 Real estate: Commercial real estate Owner occupied 154 310 250 714 2,069,646 2,070,360 Non-owner 210 - - 210 3,277,355 3,277,565 Construction Speculative (1) - - - - 116,143 116,143 Non-speculative - - - - 11,902 11,902 SFR mortgage 233 - 486 719 278,024 278,743 Dairy & livestock and agribusiness 166 - - 166 271,948 272,114 Municipal lease finance receivables - - - - 51,287 51,287 Consumer and other loans - - 93 93 114,113 114,206 Total gross loans $ 4,196 $ 1,626 $ 3,985 $ 9,807 $ 7,456,345 $ 7,466,152 (1) Speculative construction loans are generally for properties where there is no identified buyer or renter. Following the adoption of CECL on January 1, 2020, the definitions of impairment and related impaired loan disclosures were removed. Under CECL, amortized cost of our finance receivables and loans that are on nonaccrual status, including loans with no allowance, are presented as of March 31, 2020 by type of loan. March 31, 2020 Nonaccrual Total Loans Past Due (Dollars in thousands) Commercial and industrial $ 549 $ 1,703 $ - SBA 2,110 2,748 - Real estate: Commercial real estate Owner occupied 715 715 - Non-owner 232 232 - Construction Speculative (2) - - - Non-speculative - - - SFR mortgage 864 864 - Dairy & livestock and agribusiness - - - Municipal lease finance receivables - - - Consumer and other loans 166 166 - Total gross loans $ 4,636 $ 6,428 $ - (1) As of March 31, 2020, $982,000 of nonaccruing loans were current, $154,000 were 30-59 60-89 (2) Speculative construction loans are generally for properties where there is no identified buyer or renter. ( 3 Excludes $1.7 million of guaranteed portion of nonaccrual SBA loans that are in process of collection. The following table presents the recorded investment in, and the aging of, past due and nonaccrual loans, by type of loans as of the date presented. December 31, 2019 30-59 60-89 Days Total Past Due Nonaccrual Current Total Loans (Dollars in thousands) Commercial and industrial $ 2 $ - $ 2 $ 1,266 $ 933,859 $ 935,127 SBA 870 532 1,402 2,032 301,574 305,008 Real estate: Commercial real estate Owner occupied - - - 479 2,083,171 2,083,650 Non-owner occupied - - - 245 3,290,722 3,290,967 Construction Speculative (2) - - - - 106,895 106,895 Non-speculative - - - - 10,030 10,030 SFR mortgage 6 243 249 878 282,341 283,468 Dairy & livestock and agribusiness - - - - 383,709 383,709 Municipal lease finance receivables - - - - 53,146 53,146 Consumer and other loans - - - 377 115,942 116,319 Total gross loans $ 878 $ 775 $ 1,653 $ 5,277 $ 7,561,389 $ 7,568,319 (1) As of December 31, 2019, $1.2 million of nonaccruing loans were current, $59,000 were 30-59 60-89 (2) Speculative construction loans are generally for properties where there ed ( 3 Excludes $2.0 million of guaranteed porti on Impaired Loans (prior to adoption of CECL) Following the adoption of CECL as of January 1, 2020, the definitions of impairment and related impaired loan disclosures were removed. As a result of the change, the following tables present information about our impaired loans and lease finance receivables, individually evaluated for impairment by type of loans, as of March 31, 2019 and December 31, 2019, prior to the date of adoption of the amendments to the credit loss standard. Three Months Ended Recorded Unpaid Related Average Interest (Dollars in thousands) With no related allowance recorded: Commercial and industrial $ 8,208 $ 12,317 $ - $ 8,230 $ 2 SBA 3,400 5,779 - 3,511 11 Real estate: Commercial real estate Owner occupied 519 618 - 521 - Non-owner 1,070 1,231 - 1,084 7 Construction Speculative - - - - - Non-speculative - - - - - SFR mortgage 5,051 5,865 - 5,082 21 Dairy & livestock and agribusiness - - - - - Municipal lease finance receivables - - - - - Consumer and other loans 476 625 - 482 - Total 18,724 26,435 - 18,910 41 With a related allowance recorded: Commercial and industrial 304 309 117 323 - SBA 1,261 1,236 317 1,261 - 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 1 1 1 1 - Total 1,566 1,546 435 1,585 - Total impaired loans $ 20,290 $ 27,981 $ 435 $ 20,495 $ 41 December 31, 2019 Recorded Unpaid Related (Dollars in thousands) With no related allowance recorded: Commercial and industrial $ 1,091 $ 1,261 $ - SBA 2,243 2,734 - Real estate: Commercial real estate Owner occupied 479 613 - Non-owner 642 643 - Construction Speculative - - - Non-speculative - - - SFR mortgage 2,979 3,310 - Dairy & livestock and agribusiness - - - Municipal lease finance receivables - - - Consumer and other loans 377 514 - Total 7,811 9,075 - With a related allowance recorded: Commercial and industrial 253 347 251 SBA 325 324 257 Real estate: Commercial real estate Owner occupied - - - Non-owner ied - - - Construction Speculative - - - Non-speculative - - - SFR mortgage - - - Dairy & livestock and agribusiness - - - Municipal lease finance receivables - - - Consumer and other loans - - - Total 578 671 508 Total impaired loans $ 8,389 $ 9,746 $ 508 Collateral Dependent Loans A loan is considered collateral-dependent when the borrower is experiencing financial difficulty and repayment is expected to be provided substantially through the operation or sale of the collateral. The following table presents the recorded investment in collateral-dependent loans by type of loans as of the date presented. March 31, 2020 Number of Loans Real Estate Business Assets Other (Dollars in thousands) Commercial and industrial $ 112 $ 1,652 $ 8 12 SBA 1,852 2,524 8 19 Real estate: Commercial real estate 1,324 - - 5 Construction - - - - SFR mortgage 864 - - 3 Dairy & livestock and agribusiness - - - - Municipal lease finance receivables - - - - Consumer and other loans 84 - 22 4 Total collateral-dependent loans $ 4,236 $ 4,176 $ 38 43 Reserve for Unfunded Loan Commitments The allowance for off-balance off-balance 2016-13, included a transition adjustment of as January 1, Troubled Debt Restructurings (“TDRs”) Loans that are reported as TDRs are considered nonperforming charge-off – Summary of Significant Accounting Policies, 10-K As of March 31, 2020, there were $2.8 million of loans classified as a TDR, of which $2.8 million were performing and none 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 March 31, 2020, performing TDRs were comprised of seven SFR mortgage loans of $1.8 million, one SBA loan of $524,000, one commercial real estate loan of $377,000, and two commercial and industrial loans of $68,000. 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 no . The following table provides a summary of the activity related to TDRs for the periods presented. Three Months Ended March 31, 2020 2019 (Dollars in thousands) Performing TDRs: Beginning balance $ 3,112 $ 3,594 New modifications - - Payoffs/payments, net and other (299 ) (295 ) TDRs returned to accrual status - - TDRs placed on nonaccrual status - - Ending balance $ 2,813 $ 3,299 Nonperforming TDRs: Beginning balance $ 244 $ 3,509 New modifications - - Charge-offs - (78 ) Transfer to OREO - (2,275 ) Payoffs/payments, net and other (244 ) (879 ) TDRs returned to accrual status - - TDRs placed on nonaccrual status - - Ending balance $ - $ 277 Total TDRs $ 2,813 $ 3,576 As of March 31, 2020 and 2019, there were no loans that were modified as TDRs dur ing There were no loans that were previously modified as a TDR within the previous 12 months that subsequently defaulted during the three months ended March 31, 2020 and 2019. In accordance with regulatory guidance, if borrowers are less than 30 days past due on their loans, upon implementation of the modification program, or as allowed under the CARES Act if borrowers are less than 30 days past due on their loans as of December 31, 2019, and enter into short-term loan modifications offered as a result of COVID-19, COVID-19, COVID-19,

Earnings Per Share Reconciliati

Earnings Per Share Reconciliation	3 Months Ended
	Mar. 31, 2020
Earnings Per Share [Abstract]
Earnings Per Share Reconciliation	6. 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 months ended March 31, 2020 and 2019, shares deemed to be antidilutive, and thus excluded from the computation of earnings per common share, were 269,000 and 396,000, 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. Three Months Ended 2020 2019 (In thousands, except per share amounts) Earnings per common share: Net earnings $ 37,980 $ 51,642 Less: Net earnings allocated to restricted stock 83 141 Net earnings allocated to common shareholders $ 37,897 $ 51,501 Weighted average shares outstanding 139,107 139,615 Basic earnings per common share $ 0.27 $ 0.37 Diluted earnings per common share: Net income allocated to common shareholders 37,897 51,501 Weighted average shares outstanding 139,107 139,615 Incremental shares from assumed exercise of outstanding options 209 216 Diluted weighted average shares outstanding 139,316 139,831 Diluted earnings per common share $ 0.27 $ 0.37

Fair Value Information

Fair Value Information	3 Months Ended
	Mar. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value Information	7. 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 March 31, 2020. 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 three months ended March 31, 2020 and 2019. 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 the dates presented. Carrying Value at March 31, 2020 Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs (Level 2) Significant (Dollars in thousands) Description of assets Investment securities - AFS: Mortgage-backed securities $ 1,161,931 $ - $ 1,161,931 $ - CMO/REMIC 480,093 - 480,093 - Municipal bonds 37,032 - 37,032 - Other securities 699 - 699 - Total investment securities - AFS 1,679,755 - 1,679,755 - Interest rate swaps 33,255 - 33,255 - Total assets $ 1,713,010 $ - $ 1,713,010 $ - Description of liability Interest rate swaps $ 33,255 $ - $ 33,255 $ - Total liabilities $ 33,255 $ - $ 33,255 $ - Carrying Value at Quoted Prices in Significant Other Significant (Dollars in thousands) Description of assets Investment securities - AFS: Mortgage-backed securities $ 1,206,313 $ - $ 1,206,313 $ - CMO/REMIC 493,710 - 493,710 - Municipal bonds 39,354 - 39,354 - Other securities 880 - 880 - Total investment securities - AFS 1,740,257 - 1,740,257 - Interest rate swaps 11,502 - 11,502 - Total assets $ 1,751,759 $ - $ 1,751,759 $ - Description of liability Interest rate swaps $ 11,502 $ - $ 11,502 $ - Total liabilities $ 11,502 $ - $ 11,502 $ - 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 Significant Other Significant Total Losses (Dollars in thousands) Description of assets Loans: Commercial and industrial $ 903 $ - $ - $ 903 $ 9024 SBA 1,000 - - 1,000 36 Real estate: Commercial real estate - - - - - Construction - - - - - SFR mortgage - - - - - Dairy & livestock and agribusiness - - - - - Consumer and other loans - - - - - Other real estate owned - - - - - Asset held-for-sale - - - - - Total assets $ 1,903 $ - $ - $ 1,903 $ 938 Carrying Value at Quoted Prices in Significant Other Significant Total Losses (Dollars in thousands) Description of assets Impaired loans: Commercial and industrial $ 253 $ - $ - $ 253 $ 251 SBA 359 - - 359 513 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 $ 1,056 $ - $ - $ 1,056 $ 828 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 March 31, 2020 and December 31, 2019, respectively. The use of different market assumptions and/or estimation methodologies may have a material effect on the estimated fair value amounts. March 31, 2020 Carrying Estimated Fair Value Amount Level 1 Level 2 Level 3 Total (Dollars in thousands) Assets Total cash and cash equivalents $ 705,739 705,739 - - 705,739 Interest-earning balances due from depository institutions 23,799 - 23,840 - 23,840 Investment securities available-for-sale 1,679,755 - 1,679,755 - 1,679,755 Investment securities held-to-maturity 642,255 - 657,819 - 657,819 Total loans, net of allowance for credit losses 7,383,511 - - 7,338,946 7,338,946 Swaps 33,255 - 33,255 - 33,255 Liabilities Deposits: Interest-bearing $ 3,540,955 - 3,540,407 - 3,540,407 Borrowings 368,915 - 368,654 - 368,654 Junior subordinated debentures 25,774 - - 13,619 13,619 Swaps 33,255 - 33,255 - 33,255 December 31, 2019 Carrying Estimated Fair Value Amount Level 1 Level 2 Level 3 Total (Dollars in thousands) Assets Total cash and cash equivalents 185,518 185,518 - - $ 185,518 Interest-earning balances due from depository institutions 2,931 - 2,938 - 2,938 Investment securities available-for-sale 1,740,257 - 1,740,257 - 1,740,257 Investment securities held-to-maturity 674,452 - 678,948 - 678,948 Total loans, net of allowance for loan losses 7,495,917 - - 7,343,167 7,343,167 Swaps 11,502 - 11,502 - 11,502 Liabilities Deposits: Interest-bearing 3,459,411 - 3,457,922 - $ 3,457,922 Borrowings 428,659 - 428,330 - 428,330 Junior subordinated debentures 25,774 - - 20,669 20,669 Swaps 11,502 - 11,502 - 11,502 The fair value estimates presented herein are based on pertinent information available to management as of March 31, 2020 and December 31, 2019. 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	3 Months Ended
	Mar. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	8. 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 March 31, 2020, the Bank has entered into 91 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 March 31, 2020 and December 31, 2019, the total notional amount of the Company’s swaps was $269.8 million, and $260.0 million, respectively. The location of the asset and liability, and their respective fair values, are summarized in the tables below. March 31, 2020 Asset Derivatives Liability Derivatives Balance Sheet Location Fair Value Balance Sheet Location Fair Value (Dollars in thousands) Derivatives not designated as hedging instruments: Interest rate swaps Other assets $ 33,255 Other liabilities $ 33,255 Total derivatives $ 33,255 $ 33,255 December 31, 2019 Asset Derivatives Liability Derivatives Balance Sheet Location Fair Value Balance Sheet Fair Value (Dollars in thousands) Derivatives not designated as hedging instruments: Interest rate swaps Other assets $ 11,502 Other liabilities $ 11,502 Total derivatives $ 11,502 $ 11,502 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 Location of Gain Recognized in Income on Derivative Instruments Amount of Gain Recognized in Income on Derivative Instruments Three Months Ended March 31, 2020 2019 (Dollars in thousands) Interest rate swaps Other income $ 373 $ 384 Total $ 373 $ 384

Other Comprehensive Income

Other Comprehensive Income	3 Months Ended
	Mar. 31, 2020
Equity [Abstract]
Other Comprehensive Income	9. OTHER COMPREHENSIVE INCOME The table below provides a summary of the components of other comprehensive inc om Three Months Ended March 31, 2020 2019 Before-tax Tax effect After-tax Before-tax Tax effect After-tax (Dollars in thousands) Investment securities: Net change in fair value recorded in accumulated OCI $ 36,619 $ (10,826 ) $ 25,793 $ 19,350 $ (5,720 ) $ 13,630 Amortization of net unrealized losses on securities available-for-sale held-to-maturity (1 ) - (1 ) (1,123 ) 332 (791 ) Net change $ 36,618 $ (10,826 ) $ 25,792 $ 18,227 $ (5,388 ) $ 12,839

Balance Sheet Offsetting

Balance Sheet Offsetting	3 Months Ended
	Mar. 31, 2020
Text Block [Abstract]
Balance Sheet Offsetting	10. BALANCE SHEET OFFSETTING Assets and liabilities relating to certain financial instruments, including, derivatives and securities sold under repurchase agreements (“repurchase agreements”), may be eligible for offset in the condensed consolidated balance sheets as permitted under accounting guidance. As noted above, our interest rate swap derivatives are subject to master netting arrangements. Our interest rate swap derivatives require the Company to pledge investment securities as collateral based on certain risk thresholds. Investment securities that have been pledged by the Company to counterparties continue to be reported in the Company’s condensed consolidated balance sheets unless the Company defaults. We offer a repurchase agreement product to our customers, which include master netting agreements that allow for the netting of collateral positions. This product, known as Citizens Sweep Manager, sells certain of our securities overnight to our customers under an agreement to repurchase them the next day. The repurchase agreements are not offset in the Company’s conden se Gross Amounts the Condensed Gross Amounts Con densed Net Amounts in the Condensed Gross Amounts Not Offset in the Balance Sheets Consolidated Consolidated Consolidated Financial Collateral Net Amount (Dollars in thousands) March 31, 2020 Financial assets: Derivatives not designated as hedging instruments $ 33,255 $ - $ - $ 33,255 $ - $ 33,255 Total $ 33,255 $ - $ - $ 33,255 $ - $ 33,255 Financial liabilities: Derivatives not designated as hedging instruments $ 33,255 $ - $ 33,255 $ - $ (52,171 ) $ (18,916 ) Repurchase agreements 368,915 - 368,915 - (417,665 ) (48,750 ) Total $ 402,170 $ - $ 402,170 $ - $ (469,836 ) $ (67,666 ) December 31, 2019 Financial assets: Derivatives not designated as hedging instruments $ 11,502 $ - $ - $ 11,502 $ - $ 11,502 Total $ 11,502 $ - $ - $ 11,502 $ - $ 11,502 Financial liabilities: Derivatives not designated as hedging instruments $ 11,619 $ (117 ) $ 11,502 $ 117 $ (23,312 ) $ (11,693 ) Repurchase agreements 428,659 - 428,659 - (510,138 ) (81,479 ) Total $ 440,278 $ (117 ) $ 440,161 $ 117 $ (533,450 ) $ (93,172 )

Leases

Leases	3 Months Ended
	Mar. 31, 2020
Leases [Abstract]
Leases	11. 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. ROU assets and lease liabilities are included in other assets and other liabilities, respectively, on the Company’s condensed consolidated balance sheet. While the Company has, as a lessor, certain equipment finance leases, such leases are not material to the Company’s consolidated financial statements. The tables below present the components of lease costs and supplemental information related to leases as of and for the periods presented. March 31, 2020 December 31, 2019 (Dollars in thousands) Lease Assets and Liabilities ROU assets $ 16,917 $ 18,522 Total lease liabilities $ 19,484 $ 21,392 Three Months Ended March 31, 2020 2019 (Dollars in thousands) Lease Cost Operating lease expense (1) $ 1,623 $ 2,100 Sublease income - - Total lease expense $ 1,623 $ 2,100 (1) Other Information Cash paid for amounts included in the measurement of lease liabilities: Operating cash outflows from operating leases, net $ 1,935 $ 2,746 December 31, 2019 Lease Term and Discount Rate Weighted average remaining lease term (years) 3.99 4.18 Weighted average discount rate 3.34 % 3.34 % The Company’s lease arrangements that have not yet commenced as of March 31, 2020 and the Company’s short-term lease costs and variable lease costs, for the three months ended March 31, 2020 are not material to the consolidated financial statements. The future lease payments required for leases that have initial or remaining non-cancelable March 31, 2020 (Dollars in thousands) Year: 2020 (excluding the three months ended March 31, 2020) $ 5,179 2021 5,509 2022 4,322 2023 2,540 2024 1,495 Thereafter 1,781 Total future lease payments 20,826 Less: Imputed interest (1,342 ) Present value of lease liabilities $ 19,484

Revenue Recognition

Revenue Recognition	3 Months Ended
	Mar. 31, 2020
Revenue from Contract with Customer [Abstract]
Revenue Recognition	12. REVENUE RECOGNITION On January 1, 2018, the Company 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 Three Months Ended 2020 2019 (Dollars in thousands) Noninterest income: In-scope Service charges on deposit accounts $ 4,776 $ 5,141 Trust and investment services 2,420 2,182 Bankcard services 577 950 Gain on OREO, net 10 105 Other 1,798 2,044 Noninterest Income (in-scope 9,581 10,422 Noninterest Income (out-of-scope 2,059 5,881 Total noninterest income $ 11,640 $ 16,303

Accounting policies (Policies)

Accounting policies (Policies)	3 Months Ended
	Mar. 31, 2020
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 credit
Adoption of New Accounting Standard	Adoption of New Accounting Standard Provision and Allowance for Credit Losses 2016-13, held-to-maturity available-for-sale securities, as well as AFS securities, and disclose total accrued interest receivable separately on the condensed consolidated balance sheet. If accrued interest is not received, it is reversed against interest income, which was zero for the first quarter of 2020. The Company adopted this ASU using the modified retrospective method for all financial assets measured at amortized cost and off-balance Upon adoption of CECL there was no impact on the accounting for AFS or HTM investment securities. The Company developed a CECL allowance model that calculates reserves over the life of the loan and is largely driven by portfolio characteristics, risk grading, macroeconomic variables and the associated economic outlook, as well as other key methodology assumptions. The allowance is based upon historical lifetime loss rate models segregated by three loan segments: Commercial and Industrial, Commercial Real Estate, and Consumer Retail. In addition to determining the quantitative life of loan loss rate to be applied against the portfolio segments, the ASU indicates management has the opportunity to layer on current conditions and forecast adjustments to ensure that the life of loan loss rate reflects both the current state of the portfolio, and expectations for macroeconomic changes in the near future. We utilized a single economic forecast that is based on probability weighted scenarios to incorporate macroeconomic uncertainty over a 2 or 3-year During the second half of March 2020, the broader economy experienced a significant deterioration in the economic environment driven by the COVID-19 pandemic resulting in adverse changes to the forecasted macroeconomic variables utilized in our modeling processes. This expected economic deterioration, coupled with the implementation of the expected loss methodology for determining our provision for credit losses, have contributed to an increased provision for credit losses of $12 million for the first quarter of 2020. We continue to monitor the impact of COVID-19 closely, as well as any effects that may result from the CARES Act. The extent to which the COVID-19 pandemic will impact our operations and financial results during the remainder of 2020 is highly uncertain, but we may experience increased provision for credit losses if the COVID-19 pandemic results in additional economic stress on our borrowers and loan portfolios.

Investment Securities (Tables)

Investment Securities (Tables)	3 Months Ended
	Mar. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Summary of Amortized Cost and Estimated Fair Value of Investment Securities	March 31, 2020 Amortized Gross Holding Gain Gross Loss (Dollars in thousands) Investment securities available-for-sale: Mortgage-backed securities $ 1,118,385 $ 43,546 $ - $ 1,161,931 69.18% CMO/REMIC 466,033 14,060 - 480,093 28.58% Municipal bonds 36,119 913 - 37,032 2.20% Other securities 699 - - 699 0.04% Total available-for-sale $ 1,621,236 $ 58,519 $ - $ 1,679,755 100.00% Investment securities held-to-maturity: Government agency/GSE $ 111,452 $ 3,468 $ (207) $ 114,713 17.35% Mortgage-backed securities 161,983 8,182 - 170,165 25.22% CMO/REMIC 184,316 591 (98) 184,809 28.70% Municipal bonds 184,504 4,054 (426) 188,132 28.73% Total held-to-maturity $ 642,255 $ 16,295 $ (731) $ 657,819 100.00% December 31, 2019 Amortized Cost Gross Holding Gain Gross Holding Loss Fair Value Total Percent (Dollars in thousands) Investment securities available-for-sale: Mortgage-backed securities $ 1,185,757 $ 21,306 $ (750) $ 1,206,313 69.32% CMO/REMIC 493,214 1,392 (896) 493,710 28.37% Municipal bonds 38,506 850 (2) 39,354 2.26% Other securities 880 - - 880 0.05% Total available-for-sale $ 1,718,357 $ 23,548 $ (1,648) $ 1,740,257 100.00% Investment securities held-to-maturity: Government agency/GSE $ 117,366 $ 2,280 $ (657) $ 118,989 17.40% Mortgage-backed securities 168,479 2,083 (54) 170,508 24.98% CMO/REMIC 192,548 - (2,458) 190,090 28.55% Municipal bonds 196,059 3,867 (565) 199,361 29.07% Total held-to-maturity $ 674,452 $ 8,230 $ (3,734) $ 678,948 100.00%
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. Three Months Ended March 31, 2020 2019 (Dollars in thousands) Investment securities available-for-sale: Taxable $ 9,825 $ 10,309 Tax-advantaged 224 336 Total interest income from available-for-sale 10,049 10,645 Investment securities held-to-maturity: Taxable 2,698 2,910 Tax-advantaged 1,300 1,615 Total interest income from held-to-maturity 3,998 4,525 Total interest income from investment securities $ 14,047 $
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 December 31, 2019, prior to adoption of ASU 2016-13. Management previously . December Less Than 12 Months 12 Months or Longer Total Fair Value Gross Fair Value Gross Fair Value Gross (Dollars in thousands) Investment securities available-for-sale: Mortgage-backed securities $ 20,289 $ (6 ) $ 97,964 $ (744 ) $ 118,253 $ (750 ) CMO/REMIC 177,517 (705 ) 34,565 (191 ) 212,082 (896 ) Municipal bonds - - 563 (2 ) 563 (2 ) Total available-for-sale $ $ (711 ) $ $ (937 ) $ $ (1,648 ) Investment securities held-to-maturity: Government agency/GSE $ 28,359 $ (252 ) $ 19,405 $ (405 ) $ 47,764 $ (657 ) Mortgage-backed securities 10,411 (54 ) - - 10,411 (54 ) CMO/REMIC 23,897 (104 ) 166,193 (2,354 ) 190,090 (2,458 ) Municipal bonds 7,583 (32 ) 29,981 (533 ) 37,564 (565 ) Total held-to-maturity $ 70,250 $ ) $ 215,579 $ ) $ 285,829 $ )
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 , March 31, 2020 Available-for-sale Held-to-maturity Amortized Fair Value Amortized Cost Fair Value (Dollars in thousands) Due in one year or less $ 13,043 $ 13,160 $ 768 $ 788 Due after one year through five years 1,376,413 1,427,373 358,973 367,734 Due after five years through ten years 176,690 182,573 103,004 104,787 Due after ten years 55,090 56,649 179,510 184,510 Total investment securities $ $ $ $

Loans and Lease Finance Recei_2

Loans and Lease Finance Receivables and Allowance for Loan Losses (Tables)	3 Months Ended
	Mar. 31, 2020
Receivables [Abstract]
Summary of Components of Loans and Lease Finance Receivables, Excluding PCI Loans	The following table provides a summary of total loans and lease finance receivables by type. (Dollars in thousands) Commercial and industrial $ 960,761 $ 935,127 SBA 313,071 305,008 Real estate: Commercial real estate 5,347,925 5,374,617 Construction 128,045 116,925 SFR mortgage 278,743 283,468 Dairy & livestock and agribusiness 272,114 383,709 Municipal lease finance receivables 51,287 53,146 Consumer and other loans 114,206 116,319 Gross loans 7,466,152 7,568,319 Less: Deferred loan fees, net (1) - (3,742 ) Gross loans, net of deferred loan fees 7,466,152 7,564,577 Less: Allowance for credit (82,641 ) (68,660 ) Total loans and lease finance receivables $ 7,383,511 $ 7,495,917 (1) Beginning with March 31, 2020, gross loans are presented net of deferred loan fees by respective class of financing receivables.
Summary of loans by type and origination year, according to our internal risk ratings	The following table summarizes loans by type and origination year, according to our internal risk ratings as of the date presented. Origination Year Revolving Revolving March 31, 2020 2020 2019 2018 2017 2016 Prior Total (Dollars in thousands) Commercial and industrial loans: Risk Rating: Pass $ 35,101 $ 160,551 $ 79,808 $ 74,291 $ 48,698 $ 85,803 $ 423,186 $ 8,849 $ 916,287 Special Mention 1,066 257 7,405 1,694 539 3,524 12,598 2,442 29,525 Substandard - 143 796 855 637 37 11,256 1,225 14,949 Doubtful & Loss - - - - - - - - - Total Commercial and industrial loans: $ 36,167 $ 160,951 $ 88,009 $ 76,840 $ 49,874 $ 89,364 $ 447,040 $ 12,516 $ 960,761 SBA: Risk Rating: Pass $ 26,599 $ 18,009 $ 48,416 $ 77,219 $ 27,922 $ 93,865 $ - $ - $ 292,030 Special Mention - - - 1,177 1,277 7,809 - - 10,263 Substandard - - 1,424 3,835 1,604 3,915 - - 10,778 Doubtful & Loss - - - - - - - - - Total SBA: $ 26,599 $ 18,009 $ 49,840 $ 82,231 $ 30,803 $ 105,589 $ - $ - $ 313,071 Commercial real estate loans: Risk Rating: Pass $ 153,366 $ 726,268 $ 743,909 $ 732,319 $ 626,561 $ 2,021,759 $ 197,335 $ 18,747 $ 5,220,264 Special Mention - 5,343 9,106 16,484 7,211 52,995 3,457 - 94,596 Substandard - - 5,155 5,813 1,315 18,819 250 1,713 33,065 Doubtful & Loss - - - - - - - - - Total Commercial real estate loans: $ 153,366 $ 731,611 $ 758,170 $ 754,616 $ 635,087 $ 2,093,573 $ 201,042 $ 20,460 $ 5,347,925 Construction loans: Risk Rating: Pass $ 550 $ 13,414 $ 13,300 $ 35,130 $ 10,592 $ 5 $ 49,591 $ 5,463 $ 128,045 Special Mention - - - - - - - - - Substandard - - - - - - - - - Doubtful & Loss - - - - - - - - - Total Construction loans: $ 550 $ 13,414 $ 13,300 $ 35,130 $ 10,592 $ 5 $ 49,591 $ 5,463 $ 128,045 SFR mortgage loans: Risk Rating: Pass $ 10,473 $ 66,680 $ 38,192 $ 26,819 $ 35,992 $ 96,795 $ - $ - $ 274,951 Special Mention - - - - - 1,942 - - 1,942 Substandard - - - 379 - 1,025 - 446 1,850 Doubtful & Loss - - - - - - - - - Total SFR mortgage loans: $ 10,473 $ 66,680 $ 38,192 $ 27,198 $ 35,992 $ 99,762 $ - $ 446 $ 278,743 Origination Year Revolving Revolving March 31, 2020 2020 2019 2018 2017 2016 Prior Total (Dollars in thousands) Dairy & livestock and agribusiness loans: Risk Rating: Pass $ 78 $ 2,945 $ 1,940 $ 8,109 $ 2,831 $ 14,655 $ 192,649 $ - $ 223,207 Special Mention - - 166 722 - - 22,150 3,686 26,724 Substandard - - 882 - 4,016 - 4,625 12,660 22,183 Doubtful & Loss - - - - - - - - - Total Dairy & livestock and agribusiness loans: $ 78 $ 2,945 $ 2,988 $ 8,831 $ 6,847 $ 14,655 $ 219,424 $ 16,346 $ 272,114 Municipal lease finance receivables loans: Risk Rating: Pass $ 147 $ - $ 3,081 $ 10,961 $ 7,912 $ 28,739 $ - $ - $ 50,840 Special Mention - - - - - 447 - - 447 Substandard - - - - - - - - - Doubtful & Loss - - - - - - - - - Total Municipal lease finance receivables loans: $ 147 $ - $ 3,081 $ 10,961 $ 7,912 $ 29,186 $ - $ - $ 51,287 Consumer and other loans: Risk Rating: Pass $ 1,647 $ 3,197 $ 1,160 $ 1,372 $ 2,094 $ 2,612 $ 98,953 $ 1,582 $ 112,617 Special Mention - - - - 80 148 609 - 837 Substandard - - 5 - - 179 148 420 752 Doubtful & Loss - - - - - - - - - Total Consumer and other loans: $ 1,647 $ 3,197 $ 1,165 $ 1,372 $ 2,174 $ 2,939 $ 99,710 $ 2,002 $ 114,206 Gross loans: Risk Rating: Pass $ 227,961 $ 991,064 $ 929,806 $ 966,220 $ 762,602 $ 2,344,233 $ 961,714 $ 34,641 $ 7,218,241 Special Mention 1,066 5,600 16,677 20,077 9,107 66,865 38,814 6,128 164,334 Substandard - 143 8,262 10,882 7,572 23,975 16,279 16,464 83,577 Doubtful & Loss - - - - - - - - - Total Gross loans: $ 229,027 $ 996,807 $ 954,745 $ 997,179 $ 779,281 $ 2,435,073 $ 1,016,807 $ 57,233 $ 7,466,152
Summary of Loan, Excluding PCI Loans by Internal Risk Ratings	The following table summarizes lo an December 31, 2019 Pass Special Substandard Doubtful & Total (Dollars in thousands) Commercial and industrial $ 895,234 $ 35,473 $ 4,420 $ - $ 935,127 SBA 283,430 11,032 10,546 - 305,008 Real estate: Commercial real estate Owner occupied 1,977,007 78,208 28,435 - 2,083,650 Non-owner 3,280,580 10,005 382 - 3,290,967 Construction Speculative 106,895 - - - 106,895 Non-speculative 10,030 - - - 10,030 SFR mortgage 280,010 1,957 1,501 - 283,468 Dairy & livestock and agribusiness 320,670 35,920 27,119 - 383,709 Municipal lease finance receivables 52,676 470 - - 53,146 Consumer and other loans 114,870 421 1,028 - 116,319 Total gross loans $ 7,321,402 $ 173,486 $ 73,431 $ $ 7,568,319
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 credit losses for held-for-investment Three Months Ended March 31, 2020 Ending Balance, prior to adoption of ASU 2016-13 December 31, 2019 Impact of Provision for (Recapture of) Credit Losses Expense Charge-offs Recoveries Ending Balance (Dollars i Commercial and industrial $ 8,880 $ (2,442 ) $ 2,947 $ - $ 2 $ 9,387 SBA 1,453 1,818 675 - - 3,946 Real estate: Commercial real estate 48,629 3,547 6,251 - - 58,427 Construction 858 655 3,116 - 3 4,632 SFR mortgage 2,339 (2,043 ) (221 ) - 206 281 Dairy & livestock and agribusiness 5,255 (186 ) (803 ) - - 4,266 Municipal lease finance receivables 623 (416 ) 70 - - 277 Consumer and other loans 623 907 (35 ) (86 ) 16 1,425 Total allowance for credit losses $ 68,660 $ 1,840 $ 12,000 $ (86 ) $ 227 $ 82,641 Three Months Ended March 31, 2019 Ending Balance December 31, Charge-offs Recoveries Provision for (Recapture of) Loan Losses Ending Balance March 31, 2019 (Dollars in thousands) Commercial and industrial $ 7,520 $ - $ 110 $ (31 ) $ 7,599 SBA 1,062 (20 ) 5 232 1,279 Real estate: - - Commercial real estate 44,934 - - 1,144 46,078 Construction 981 - 3 (120 ) 864 SFR mortgage 2,196 - 68 (76 ) 2,188 Dairy & livestock and agribusiness 5,215 (78 ) - 562 5,699 Municipal lease finance receivabl es 775 - - (37 ) 738 Consumer and other loans 726 (1 ) 1 (150 ) 576 PCI loans 204 - - (24 ) 180 Total allowance for loan losses $ 63,613 $ (99 ) $ 187 $ 1,500 $ 65,201
Schedule of Recorded Investment in Loans Held-for-Investment and Related Allowance for Loan Losses by Loan Type	March 31, 2019 Recorded Investment in Loans Allowance for Loan Losses Individually Collectively Acquired with Individually Collectively Acquired with (Dollars in thousands) Commercial and industrial $ 8,512 $ 948,614 $ - $ 117 $ 7,482 $ - SBA 4,661 333,296 - 317 962 - Real estate: Commercial real estate 1,589 5,387,277 - - 46,078 - Construction - 121,912 - - 864 - SFR mortgage 5,051 280,736 - - 2,188 - Dairy & livestock and agribusiness - 322,321 - - 5,699 - Municipal lease finance receivables - 61,249 - - 738 - Consumer and other loans 477 120,291 - 1 575 - PCI loans - - 15,356 - - 180 Total $ 20,290 $ 7,575,696 $ 15,356 $ 435 $ 64,586 $ 180
Schedule of Recorded Investment in, and Aging of, Past Due and Nonaccrual Loans, Excluding PCI Loans by Class of Loans	We seek to manage asset quality 3 – Summary of Significant Accounting Policies, included in our Annual Report on Form 10- K for the year ended December 31, 2019, for additional discussion concerning the Bank’s policy for past due and nonperforming loans. The following table presents the recorded investment in, and the ag in ent March 31, 2020 30-59 60-89 Greater than 89 Days Total Past Loans Not Total Loans (Dollars in thousands) Commercial and industrial $ 347 $ 362 $ 1,487 $ 2,196 $ 958,565 $ 960,761 SBA 3,086 954 1,669 5,709 307,362 313,071 Real estate: Commercial real estate Owner occupied 154 310 250 714 2,069,646 2,070,360 Non-owner 210 - - 210 3,277,355 3,277,565 Construction Speculative (1) - - - - 116,143 116,143 Non-speculative - - - - 11,902 11,902 SFR mortgage 233 - 486 719 278,024 278,743 Dairy & livestock and agribusiness 166 - - 166 271,948 272,114 Municipal lease finance receivables - - - - 51,287 51,287 Consumer and other loans - - 93 93 114,113 114,206 Total gross loans $ 4,196 $ 1,626 $ 3,985 $ 9,807 $ 7,456,345 $ 7,466,152 (1) Speculative construction loans are generally for properties where there is no identified buyer or renter. Following the adoption of CECL on January 1, 2020, the definitions of impairment and related impaired loan disclosures were removed. Under CECL, amortized cost of our finance receivables and loans that are on nonaccrual status, including loans with no allowance, are presented as of March 31, 2020 by type of loan. March 31, 2020 Nonaccrual Total Loans Past Due (Dollars in thousands) Commercial and industrial $ 549 $ 1,703 $ - SBA 2,110 2,748 - Real estate: Commercial real estate Owner occupied 715 715 - Non-owner 232 232 - Construction Speculative (2) - - - Non-speculative - - - SFR mortgage 864 864 - Dairy & livestock and agribusiness - - - Municipal lease finance receivables - - - Consumer and other loans 166 166 - Total gross loans $ 4,636 $ 6,428 $ - (1) As of March 31, 2020, $982,000 of nonaccruing loans were current, $154,000 were 30-59 60-89 (2) Speculative construction loans are generally for properties where there is no identified buyer or renter. ( 3 Excludes $1.7 million of guaranteed portion of nonaccrual SBA loans that are in process of collection. The following table presents the recorded investment in, and the aging of, past due and nonaccrual loans, by type of loans as of the date presented. December 31, 2019 30-59 60-89 Days Total Past Due Nonaccrual Current Total Loans (Dollars in thousands) Commercial and industrial $ 2 $ - $ 2 $ 1,266 $ 933,859 $ 935,127 SBA 870 532 1,402 2,032 301,574 305,008 Real estate: Commercial real estate Owner occupied - - - 479 2,083,171 2,083,650 Non-owner occupied - - - 245 3,290,722 3,290,967 Construction Speculative (2) - - - - 106,895 106,895 Non-speculative - - - - 10,030 10,030 SFR mortgage 6 243 249 878 282,341 283,468 Dairy & livestock and agribusiness - - - - 383,709 383,709 Municipal lease finance receivables - - - - 53,146 53,146 Consumer and other loans - - - 377 115,942 116,319 Total gross loans $ 878 $ 775 $ 1,653 $ 5,277 $ 7,561,389 $ 7,568,319 (1) As of December 31, 2019, $1.2 million of nonaccruing loans were current, $59,000 were 30-59 60-89 (2) Speculative construction loans are generally for properties where there ed ( 3 Excludes $2.0 million of guaranteed porti on
Schedule of Held-for-Investment Loans, Individually Evaluated for Impairment by Class of Loans	Three Months Ended Recorded Unpaid Related Average Interest (Dollars in thousands) With no related allowance recorded: Commercial and industrial $ 8,208 $ 12,317 $ - $ 8,230 $ 2 SBA 3,400 5,779 - 3,511 11 Real estate: Commercial real estate Owner occupied 519 618 - 521 - Non-owner 1,070 1,231 - 1,084 7 Construction Speculative - - - - - Non-speculative - - - - - SFR mortgage 5,051 5,865 - 5,082 21 Dairy & livestock and agribusiness - - - - - Municipal lease finance receivables - - - - - Consumer and other loans 476 625 - 482 - Total 18,724 26,435 - 18,910 41 With a related allowance recorded: Commercial and industrial 304 309 117 323 - SBA 1,261 1,236 317 1,261 - 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 1 1 1 1 - Total 1,566 1,546 435 1,585 - Total impaired loans $ 20,290 $ 27,981 $ 435 $ 20,495 $ 41 December 31, 2019 Recorded Unpaid Related (Dollars in thousands) With no related allowance recorded: Commercial and industrial $ 1,091 $ 1,261 $ - SBA 2,243 2,734 - Real estate: Commercial real estate Owner occupied 479 613 - Non-owner 642 643 - Construction Speculative - - - Non-speculative - - - SFR mortgage 2,979 3,310 - Dairy & livestock and agribusiness - - - Municipal lease finance receivables - - - Consumer and other loans 377 514 - Total 7,811 9,075 - With a related allowance recorded: Commercial and industrial 253 347 251 SBA 325 324 257 Real estate: Commercial real estate Owner occupied - - - Non-owner ied - - - Construction Speculative - - - Non-speculative - - - SFR mortgage - - - Dairy & livestock and agribusiness - - - Municipal lease finance receivables - - - Consumer and other loans - - - Total 578 671 508 Total impaired loans $ 8,389 $ 9,746 $ 508
Summary of pledged assets not separately reported on statement of financial position	A loan is considered collateral-dependent when the borrower is experiencing financial difficulty and repayment is expected to be provided substantially through the operation or sale of the collateral. The following table presents the recorded investment in collateral-dependent loans by type of loans as of the date presented. March 31, 2020 Number of Loans Real Estate Business Assets Other (Dollars in thousands) Commercial and industrial $ 112 $ 1,652 $ 8 12 SBA 1,852 2,524 8 19 Real estate: Commercial real estate 1,324 - - 5 Construction - - - - SFR mortgage 864 - - 3 Dairy & livestock and agribusiness - - - - Municipal lease finance receivables - - - - Consumer and other loans 84 - 22 4 Total collateral-dependent loans $ 4,236 $ 4,176 $ 38 43
Summary of Activity Related to Troubled Debt Restructurings	The following table provides a summary of the activity related to TDRs for the periods presented. Three Months Ended March 31, 2020 2019 (Dollars in thousands) Performing TDRs: Beginning balance $ 3,112 $ 3,594 New modifications - - Payoffs/payments, net and other (299 ) (295 ) TDRs returned to accrual status - - TDRs placed on nonaccrual status - - Ending balance $ 2,813 $ 3,299 Nonperforming TDRs: Beginning balance $ 244 $ 3,509 New modifications - - Charge-offs - (78 ) Transfer to OREO - (2,275 ) Payoffs/payments, net and other (244 ) (879 ) TDRs returned to accrual status - - TDRs placed on nonaccrual status - - Ending balance $ - $ 277 Total TDRs $ 2,813 $ 3,576

Earnings Per Share Reconcilia_2

Earnings Per Share Reconciliation (Tables)	3 Months Ended
	Mar. 31, 2020
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. Three Months Ended 2020 2019 (In thousands, except per share amounts) Earnings per common share: Net earnings $ 37,980 $ 51,642 Less: Net earnings allocated to restricted stock 83 141 Net earnings allocated to common shareholders $ 37,897 $ 51,501 Weighted average shares outstanding 139,107 139,615 Basic earnings per common share $ 0.27 $ 0.37 Diluted earnings per common share: Net income allocated to common shareholders 37,897 51,501 Weighted average shares outstanding 139,107 139,615 Incremental shares from assumed exercise of outstanding options 209 216 Diluted weighted average shares outstanding 139,316 139,831 Diluted earnings per common share $ 0.27 $ 0.37

Fair Value Information (Tables)

Fair Value Information (Tables)	3 Months Ended
	Mar. 31, 2020
Fair Value Disclosures [Abstract]
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 the dates presented. Carrying Value at March 31, 2020 Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs (Level 2) Significant (Dollars in thousands) Description of assets Investment securities - AFS: Mortgage-backed securities $ 1,161,931 $ - $ 1,161,931 $ - CMO/REMIC 480,093 - 480,093 - Municipal bonds 37,032 - 37,032 - Other securities 699 - 699 - Total investment securities - AFS 1,679,755 - 1,679,755 - Interest rate swaps 33,255 - 33,255 - Total assets $ 1,713,010 $ - $ 1,713,010 $ - Description of liability Interest rate swaps $ 33,255 $ - $ 33,255 $ - Total liabilities $ 33,255 $ - $ 33,255 $ - Carrying Value at Quoted Prices in Significant Other Significant (Dollars in thousands) Description of assets Investment securities - AFS: Mortgage-backed securities $ 1,206,313 $ - $ 1,206,313 $ - CMO/REMIC 493,710 - 493,710 - Municipal bonds 39,354 - 39,354 - Other securities 880 - 880 - Total investment securities - AFS 1,740,257 - 1,740,257 - Interest rate swaps 11,502 - 11,502 - Total assets $ 1,751,759 $ - $ 1,751,759 $ - Description of liability Interest rate swaps $ 11,502 $ - $ 11,502 $ - Total liabilities $ 11,502 $ - $ 11,502 $ -
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 Significant Other Significant Total Losses (Dollars in thousands) Description of assets Loans: Commercial and industrial $ 903 $ - $ - $ 903 $ 9024 SBA 1,000 - - 1,000 36 Real estate: Commercial real estate - - - - - Construction - - - - - SFR mortgage - - - - - Dairy & livestock and agribusiness - - - - - Consumer and other loans - - - - - Other real estate owned - - - - - Asset held-for-sale - - - - - Total assets $ 1,903 $ - $ - $ 1,903 $ 938 Carrying Value at Quoted Prices in Significant Other Significant Total Losses (Dollars in thousands) Description of assets Impaired loans: Commercial and industrial $ 253 $ - $ - $ 253 $ 251 SBA 359 - - 359 513 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 $ 1,056 $ - $ - $ 1,056 $ 828
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 March 31, 2020 and December 31, 2019, respectively. The use of different market assumptions and/or estimation methodologies may have a material effect on the estimated fair value amounts. March 31, 2020 Carrying Estimated Fair Value Amount Level 1 Level 2 Level 3 Total (Dollars in thousands) Assets Total cash and cash equivalents $ 705,739 705,739 - - 705,739 Interest-earning balances due from depository institutions 23,799 - 23,840 - 23,840 Investment securities available-for-sale 1,679,755 - 1,679,755 - 1,679,755 Investment securities held-to-maturity 642,255 - 657,819 - 657,819 Total loans, net of allowance for credit losses 7,383,511 - - 7,338,946 7,338,946 Swaps 33,255 - 33,255 - 33,255 Liabilities Deposits: Interest-bearing $ 3,540,955 - 3,540,407 - 3,540,407 Borrowings 368,915 - 368,654 - 368,654 Junior subordinated debentures 25,774 - - 13,619 13,619 Swaps 33,255 - 33,255 - 33,255 December 31, 2019 Carrying Estimated Fair Value Amount Level 1 Level 2 Level 3 Total (Dollars in thousands) Assets Total cash and cash equivalents 185,518 185,518 - - $ 185,518 Interest-earning balances due from depository institutions 2,931 - 2,938 - 2,938 Investment securities available-for-sale 1,740,257 - 1,740,257 - 1,740,257 Investment securities held-to-maturity 674,452 - 678,948 - 678,948 Total loans, net of allowance for loan losses 7,495,917 - - 7,343,167 7,343,167 Swaps 11,502 - 11,502 - 11,502 Liabilities Deposits: Interest-bearing 3,459,411 - 3,457,922 - $ 3,457,922 Borrowings 428,659 - 428,330 - 428,330 Junior subordinated debentures 25,774 - - 20,669 20,669 Swaps 11,502 - 11,502 - 11,502

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Fair Value of Derivative Instruments	As of March 31, 2020 and December 31, 2019, the total notional amount of the Company’s swaps was $269.8 million, and $260.0 million, respectively. The location of the asset and liability, and their respective fair values, are summarized in the tables below. March 31, 2020 Asset Derivatives Liability Derivatives Balance Sheet Location Fair Value Balance Sheet Location Fair Value (Dollars in thousands) Derivatives not designated as hedging instruments: Interest rate swaps Other assets $ 33,255 Other liabilities $ 33,255 Total derivatives $ 33,255 $ 33,255 December 31, 2019 Asset Derivatives Liability Derivatives Balance Sheet Location Fair Value Balance Sheet Fair Value (Dollars in thousands) Derivatives not designated as hedging instruments: Interest rate swaps Other assets $ 11,502 Other liabilities $ 11,502 Total derivatives $ 11,502 $ 11,502
Effect of Derivative Instruments on Consolidated Statement of Earnings	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 Location of Gain Recognized in Income on Derivative Instruments Amount of Gain Recognized in Income on Derivative Instruments Three Months Ended March 31, 2020 2019 (Dollars in thousands) Interest rate swaps Other income $ 373 $ 384 Total $ 373 $ 384

Other Comprehensive Income (Tab

Other Comprehensive Income (Tables)	3 Months Ended
	Mar. 31, 2020
Equity [Abstract]
Summary of Components of Other Comprehensive Income	The table below provides a summary of the components of other comprehensive inc om Three Months Ended March 31, 2020 2019 Before-tax Tax effect After-tax Before-tax Tax effect After-tax (Dollars in thousands) Investment securities: Net change in fair value recorded in accumulated OCI $ 36,619 $ (10,826 ) $ 25,793 $ 19,350 $ (5,720 ) $ 13,630 Amortization of net unrealized losses on securities available-for-sale held-to-maturity (1 ) - (1 ) (1,123 ) 332 (791 ) Net change $ 36,618 $ (10,826 ) $ 25,792 $ 18,227 $ (5,388 ) $ 12,839

Balance Sheet Offsetting (Table

Balance Sheet Offsetting (Tables)	3 Months Ended
	Mar. 31, 2020
Text Block [Abstract]
Schedule of Balance Sheet Offsetting	Gross Amounts the Condensed Gross Amounts Con densed Net Amounts in the Condensed Gross Amounts Not Offset in the Balance Sheets Consolidated Consolidated Consolidated Financial Collateral Net Amount (Dollars in thousands) March 31, 2020 Financial assets: Derivatives not designated as hedging instruments $ 33,255 $ - $ - $ 33,255 $ - $ 33,255 Total $ 33,255 $ - $ - $ 33,255 $ - $ 33,255 Financial liabilities: Derivatives not designated as hedging instruments $ 33,255 $ - $ 33,255 $ - $ (52,171 ) $ (18,916 ) Repurchase agreements 368,915 - 368,915 - (417,665 ) (48,750 ) Total $ 402,170 $ - $ 402,170 $ - $ (469,836 ) $ (67,666 ) December 31, 2019 Financial assets: Derivatives not designated as hedging instruments $ 11,502 $ - $ - $ 11,502 $ - $ 11,502 Total $ 11,502 $ - $ - $ 11,502 $ - $ 11,502 Financial liabilities: Derivatives not designated as hedging instruments $ 11,619 $ (117 ) $ 11,502 $ 117 $ (23,312 ) $ (11,693 ) Repurchase agreements 428,659 - 428,659 - (510,138 ) (81,479 ) Total $ 440,278 $ (117 ) $ 440,161 $ 117 $ (533,450 ) $ (93,172 )

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2020
Leases [Abstract]
Components of lease costs and supplemental information related to leases	The tables below present the components of lease costs and supplemental information related to leases as of and for the periods presented. March 31, 2020 December 31, 2019 (Dollars in thousands) Lease Assets and Liabilities ROU assets $ 16,917 $ 18,522 Total lease liabilities $ 19,484 $ 21,392 Three Months Ended March 31, 2020 2019 (Dollars in thousands) Lease Cost Operating lease expense (1) $ 1,623 $ 2,100 Sublease income - - Total lease expense $ 1,623 $ 2,100 (1) Other Information Cash paid for amounts included in the measurement of lease liabilities: Operating cash outflows from operating leases, net $ 1,935 $ 2,746 December 31, 2019 Lease Term and Discount Rate Weighted average remaining lease term (years) 3.99 4.18 Weighted average discount rate 3.34 % 3.34 %
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 March 31, 2020 (Dollars in thousands) Year: 2020 (excluding the three months ended March 31, 2020) $ 5,179 2021 5,509 2022 4,322 2023 2,540 2024 1,495 Thereafter 1,781 Total future lease payments 20,826 Less: Imputed interest (1,342 ) Present value of lease liabilities $ 19,484

Revenue Recognition (Tables)

Revenue Recognition (Tables)	3 Months Ended
	Mar. 31, 2020
Revenue from Contract with Customer [Abstract]
Summary of Non Interest Income, Segregated by Revenue Streams in-Scope and Out-of-Scope of Topic 606	The following presents noninterest income, segregated by revenue streams in-scope out-of-scope Three Months Ended 2020 2019 (Dollars in thousands) Noninterest income: In-scope Service charges on deposit accounts $ 4,776 $ 5,141 Trust and investment services 2,420 2,182 Bankcard services 577 950 Gain on OREO, net 10 105 Other 1,798 2,044 Noninterest Income (in-scope 9,581 10,422 Noninterest Income (out-of-scope 2,059 5,881 Total noninterest income $ 11,640 $ 16,303

Business - Additional Informati

Business - Additional Information (Detail)	Mar. 31, 2020LocationSubsidiaryLoan
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
Number of loan production office | Loan	1

Summary of Significant Accoun_2

Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2020	Jan. 01, 2020
Summary Of Significant Accounting Policies [Line Items]
Net decrease in retained earnings		$ 1,300,000
Transition adjustment, allowance for credit loses for loans	$ 1,800,000
Adjustment of transition reserve for loans	41,000
Increase in provision for credit loses	$ 12,000,000

Investment Securities - Summary

Investment Securities - Summary of Amortized Cost and Estimated Fair Value of Investment Securities (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Schedule of Investments [Line Items]
Amortized Cost, Available-for-sale	$ 1,621,236	$ 1,718,357
Gross Unrealized Holding Gain, Available-for-sale	58,519	23,548
Gross Unrealized Holding Loss, Available-for-sale	0	(1,648)
Fair Value, Available-for-sale	$ 1,679,755	$ 1,740,257
Total Percent, Available-for-sale	100.00%	100.00%
Amortized Cost, Held-to-maturity	$ 642,255	$ 674,452
Gross Unrealized Holding Gain, Held-to-maturity	16,295	8,230
Gross Unrealized Holding Loss, Held-to-maturity	(731)	(3,734)
Fair Value, Held-to-maturity	$ 657,819	$ 678,948
Total Percent, Held-to-maturity	100.00%	100.00%
CMO/REMIC [Member]
Schedule of Investments [Line Items]
Amortized Cost, Available-for-sale	$ 466,033	$ 493,214
Gross Unrealized Holding Gain, Available-for-sale	14,060	1,392
Gross Unrealized Holding Loss, Available-for-sale	0	(896)
Fair Value, Available-for-sale	$ 480,093	$ 493,710
Total Percent, Available-for-sale	28.58%	28.37%
Amortized Cost, Held-to-maturity	$ 184,316	$ 192,548
Gross Unrealized Holding Gain, Held-to-maturity	591	0
Gross Unrealized Holding Loss, Held-to-maturity	(98)	(2,458)
Fair Value, Held-to-maturity	$ 184,809	$ 190,090
Total Percent, Held-to-maturity	28.70%	28.55%
Government Agency/GSE [Member]
Schedule of Investments [Line Items]
Amortized Cost, Held-to-maturity	$ 111,452	$ 117,366
Gross Unrealized Holding Gain, Held-to-maturity	3,468	2,280
Gross Unrealized Holding Loss, Held-to-maturity	(207)	(657)
Fair Value, Held-to-maturity	$ 114,713	$ 118,989
Total Percent, Held-to-maturity	17.35%	17.40%
Mortgage-backed Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost, Available-for-sale	$ 1,118,385	$ 1,185,757
Gross Unrealized Holding Gain, Available-for-sale	43,546	21,306
Gross Unrealized Holding Loss, Available-for-sale	0	(750)
Fair Value, Available-for-sale	$ 1,161,931	$ 1,206,313
Total Percent, Available-for-sale	69.18%	69.32%
Amortized Cost, Held-to-maturity	$ 161,983	$ 168,479
Gross Unrealized Holding Gain, Held-to-maturity	8,182	2,083
Gross Unrealized Holding Loss, Held-to-maturity	0	(54)
Fair Value, Held-to-maturity	$ 170,165	$ 170,508
Total Percent, Held-to-maturity	25.22%	24.98%
Municipal Bonds [Member]
Schedule of Investments [Line Items]
Amortized Cost, Available-for-sale	$ 36,119	$ 38,506
Gross Unrealized Holding Gain, Available-for-sale	913	850
Gross Unrealized Holding Loss, Available-for-sale	0	(2)
Fair Value, Available-for-sale	$ 37,032	$ 39,354
Total Percent, Available-for-sale	2.20%	2.26%
Amortized Cost, Held-to-maturity	$ 184,504	$ 196,059
Gross Unrealized Holding Gain, Held-to-maturity	4,054	3,867
Gross Unrealized Holding Loss, Held-to-maturity	(426)	(565)
Fair Value, Held-to-maturity	$ 188,132	$ 199,361
Total Percent, Held-to-maturity	28.73%	29.07%
Other Securities [Member]
Schedule of Investments [Line Items]
Amortized Cost, Available-for-sale	$ 699	$ 880
Gross Unrealized Holding Gain, Available-for-sale	0	0
Gross Unrealized Holding Loss, Available-for-sale	0	0
Fair Value, Available-for-sale	$ 699	$ 880
Total Percent, Available-for-sale	0.04%	0.05%

Investment Securities - Summa_2

Investment Securities - Summary of Interest Income Earned on Investment Securities (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Net Investment Income [Line Items]
Total interest income from available-for-sale securities	$ 10,049	$ 10,645
Total interest income from held-to-maturity securities	3,998	4,525
Total investment income	14,047	15,170
Investment securities available-for-sale [Member]
Net Investment Income [Line Items]
Taxable	9,825	10,309
Tax-advantaged	224	336
Total interest income from available-for-sale securities	10,049	10,645
Investment securities held-to-maturity [Member]
Net Investment Income [Line Items]
Taxable	2,698	2,910
Tax-advantaged	1,300	1,615
Total interest income from held-to-maturity securities	$ 3,998	$ 4,525

Investment Securities - Summa_3

Investment Securities - Summary of Continuous Unrealized Loss Position of Securities (Detail) $ in Thousands	Dec. 31, 2019USD ($)
Schedule of Investments [Line Items]
Fair Value, Less Than 12 Months, Available-for-sale	$ 197,806
Gross Unrealized Holding Losses, Less Than 12 Months, Available-for-sale	(711)
Fair Value, 12 Months or Longer, Available-for-sale	133,092
Gross Unrealized Holding Losses, 12 Months or Longer, Available-for-sale	(937)
Fair Value, Available-for-sale	330,898
Gross Unrealized Holding Losses, Available-for-sale	(1,648)
Fair Value, Less Than 12 Months, Held-to-maturity	70,250
Gross Unrealized Holding Losses, Less Than 12 Months, Held-to-maturity	(442)
Fair Value, 12 Months or Longer, Held-to-maturity	215,579
Gross Unrealized Holding Losses, 12 Months or Longer, Held-to-maturity	(3,292)
Fair Value, Held-to-maturity	285,829
Gross Unrealized Holding Losses, Held-to-maturity	(3,734)
CMO/REMIC [Member]
Schedule of Investments [Line Items]
Fair Value, Less Than 12 Months, Available-for-sale	177,517
Gross Unrealized Holding Losses, Less Than 12 Months, Available-for-sale	(705)
Fair Value, 12 Months or Longer, Available-for-sale	34,565
Gross Unrealized Holding Losses, 12 Months or Longer, Available-for-sale	(191)
Fair Value, Available-for-sale	212,082
Gross Unrealized Holding Losses, Available-for-sale	(896)
Fair Value, Less Than 12 Months, Held-to-maturity	23,897
Gross Unrealized Holding Losses, Less Than 12 Months, Held-to-maturity	(104)
Fair Value, 12 Months or Longer, Held-to-maturity	166,193
Gross Unrealized Holding Losses, 12 Months or Longer, Held-to-maturity	(2,354)
Fair Value, Held-to-maturity	190,090
Gross Unrealized Holding Losses, Held-to-maturity	(2,458)
Government Agency/GSE [Member]
Schedule of Investments [Line Items]
Fair Value, Less Than 12 Months, Held-to-maturity	28,359
Gross Unrealized Holding Losses, Less Than 12 Months, Held-to-maturity	(252)
Fair Value, 12 Months or Longer, Held-to-maturity	19,405
Gross Unrealized Holding Losses, 12 Months or Longer, Held-to-maturity	(405)
Fair Value, Held-to-maturity	47,764
Gross Unrealized Holding Losses, Held-to-maturity	(657)
Mortgage-backed Securities [Member]
Schedule of Investments [Line Items]
Fair Value, Less Than 12 Months, Available-for-sale	20,289
Gross Unrealized Holding Losses, Less Than 12 Months, Available-for-sale	(6)
Fair Value, 12 Months or Longer, Available-for-sale	97,964
Gross Unrealized Holding Losses, 12 Months or Longer, Available-for-sale	(744)
Fair Value, Available-for-sale	118,253
Gross Unrealized Holding Losses, Available-for-sale	(750)
Fair Value, Less Than 12 Months, Held-to-maturity	10,411
Gross Unrealized Holding Losses, Less Than 12 Months, Held-to-maturity	(54)
Fair Value, 12 Months or Longer, Held-to-maturity	0
Gross Unrealized Holding Losses, 12 Months or Longer, Held-to-maturity	0
Fair Value, Held-to-maturity	10,411
Gross Unrealized Holding Losses, Held-to-maturity	(54)
Municipal Bonds [Member]
Schedule of Investments [Line Items]
Fair Value, Less Than 12 Months, Available-for-sale	0
Gross Unrealized Holding Losses, Less Than 12 Months, Available-for-sale	0
Fair Value, 12 Months or Longer, Available-for-sale	563
Gross Unrealized Holding Losses, 12 Months or Longer, Available-for-sale	(2)
Fair Value, Available-for-sale	563
Gross Unrealized Holding Losses, Available-for-sale	(2)
Fair Value, Less Than 12 Months, Held-to-maturity	7,583
Gross Unrealized Holding Losses, Less Than 12 Months, Held-to-maturity	(32)
Fair Value, 12 Months or Longer, Held-to-maturity	29,981
Gross Unrealized Holding Losses, 12 Months or Longer, Held-to-maturity	(533)
Fair Value, Held-to-maturity	37,564
Gross Unrealized Holding Losses, Held-to-maturity	$ (565)

Investment Securities - Summa_4

Investment Securities - Summary of Amortized Cost and Fair Value of Debt Securities by Contractual Maturity (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Due in one year or less, Amortized Cost, Held-to-maturity	$ 768
Due after one year through five years, Amortized Cost, Held-to-maturity	358,973
Due after five years through ten years, Amortized Cost, Held-to-maturity	103,004
Due after ten years, Amortized Cost, Held-to-maturity	179,510
Total Held-to-maturity, Debt Maturities, Amortized Cost Basis	642,255
Due in one year or less, Fair Value, Held-to-maturity	788
Due after one year through five years, Fair Value, Held-to-maturity	367,734
Due after five years through ten years, Fair Value, Held-to-maturity	104,787
Due after ten years, Fair Value, Held-to-maturity	184,510
Total, Held-to-maturity, Fair Value	657,819
Due in one year or less, Amortized Cost, Available-for-sale	13,043
Due after one year through five years, Amortized Cost, Available-for-sale	1,376,413
Due after five years through ten years, Amortized Cost, Available-for-sale	176,690
Due after ten years, Amortized Cost, Available-for-sale	55,090
Amortized Cost, Available-for-sale	1,621,236	$ 1,718,357
Due in one year or less, Fair Value, Available-for-sale	13,160
Due after one year through five years, Fair Value, Available-for-sale	1,427,373
Due after five years through ten years, Fair Value, Available-for-sale	182,573
Due after ten years, Fair Value, Available-for-sale	56,649
Total Available-for-sale Securities, Debt Maturities, Available-for-sale, Fair Value	$ 1,679,755	$ 1,740,257

Investment Securities - Additio

Investment Securities - Additional Information (Detail) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Investment securities pledged as collateral	$ 1,630,000,000	$ 1,640,000,000
Investment in FHLB stock, impairment losses	$ 0
United States [Member]
Debt Securities, Available-for-sale [Line Items]
Securities issued by U.S. government percentage	90.00%

Loans and Lease Finance Recei_3

Loans and Lease Finance Receivables and Allowance for Loan Losses - Additional Information (Detail)	Jan. 01, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020USD ($)Contract	Mar. 31, 2019USD ($)Contract	Dec. 31, 2019USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Secure borrowings and available lines of credit from FHLB and Federal Reserve Bank				$ 6,060,000,000		$ 6,030,000,000
Loans held-for-sale				0		0
Impaired, at carrying value				2,800,000	$ 20,290,000	8,389,000
Impaired, at carrying value					435,000	508,000
Allowance for Credit Losses				82,600,000	$ 180,000
Provision for Credit Losses				$ 12,000,000
Percentage Of Allowance For Credit Losses	0.93%			1.11%
Reserve for credit risk for undisbursed commitments				$ 9,000,000		9,000,000
Allocation of allowance to troubled debt restructuring				$ 0		0
Number of loans modified as a TDR within the previous 12 months that subsequently defaulted | Contract				0	0
Increase in reserve for unfunded loan commitments				$ 0
Percentage of PCI loans to Loan Receivable		10.00%	20.00%
Description of Effects in Loans due to COVID 19				In accordance with regulatory guidance, if borrowers are less than 30 days past due on their loans, upon implementation of the modification program, or as allowed under the CARES Act if borrowers are less than 30 days past due on their loans as of December 31, 2019, and enter into short-term loan modifications offered as a result of COVID-19, their loans generally continue to be considered performing loans and continue to accrue interest during the period of the loan modification. For borrowers who are 30 days or more past due when entering into loan modifications offered as a result of COVID-19, we evaluate the loan modifications under our existing troubled debt restructuring framework, and where such a loan modification would result in a concession to a borrower experiencing financial difficulty, the loan will be accounted for as a TDR and will generally not accrue interest. For all borrowers who enroll in these loan modification programs offered as a result of COVID-19, the delinquency status of the borrowers is frozen, resulting in a static delinquency metric during the deferral period. Upon exiting the deferral program, the measurement of loan delinquency will resume where it had left off upon entry into the program. Through May 3, 2020, we have granted temporary payment deferments of interest or of principal and interest for 90 days on 620 loans in the amount of $940 million, or approximately 13% of our total loan portfolio at March 31, 2020.
Unemployment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of Increase Decrease In Macro Economic Factors		6.00%	9.00%
Impact of ASU 2016-13 Adoption [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Increase in reserve for unfunded loan commitments				$ 41,000
Commercial Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of total gross loan portfolio (excluding PCI loans)				77.08%
Notes receivable gross				$ 5,347,925,000		5,374,617,000
Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of total gross loan portfolio (excluding PCI loans)				71.63%
Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for Credit Losses					$ 0
Small Business Administration [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for Credit Losses					0
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for Credit Losses					$ 0
Performing Financing Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired, at carrying value				$ 2,800,000
Performing Financing Receivable [Member] | Single-family Residential Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans classified as troubled debt restructured				1,800,000
Performing Financing Receivable [Member] | Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans classified as troubled debt restructured				68,000
Performing Financing Receivable [Member] | Small Business Administration [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans classified as troubled debt restructured				524,000
Performing Financing Receivable [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans classified as troubled debt restructured				377,000
Loans, Excluding PCI Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross				272,100,000
Loans, Excluding PCI Loans [Member] | Dairy & Livestock Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross				218,000,000		323,500,000
Loans, Excluding PCI Loans [Member] | Agribusiness Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross				$ 54,100,000		$ 60,200,000
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)				4.64%		4.50%
Notes receivable gross				$ 248,200,000		$ 241,800,000
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				122,500,000		125,900,000
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				$ 125,700,000		$ 115,900,000

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	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Construction	$ 128,045	$ 116,925
Total Gross loans	7,466,152	7,568,319
Less: Deferred loan fees, net	0	(3,742)
Gross loans, net of deferred loan fees	7,466,152	7,564,577
Less: Allowance for loan losses	(82,641)	(68,660)	$ (65,201)	$ (63,613)
Net loans and lease finance receivables	7,383,511	7,495,917
Commercial And Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	960,761	935,127
Total Gross loans	960,761
SBA [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	313,071	305,008
Total Gross loans	313,071
Commercial real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	5,347,925	5,374,617
Total Gross loans	5,347,925
SFR mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	278,743	283,468
Total Gross loans	278,743
Dairy & livestock and agribusiness [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	272,114	383,709
Total Gross loans	272,114
Municipal Lease Finance Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	51,287	53,146
Total Gross loans	51,287	53,146
Less: Allowance for loan losses	(277)		$ (738)	$ (775)
Consumer and other loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	114,206	$ 116,319
Total Gross loans	$ 114,206

Loans and Lease Finance Recei_5

Loans and Lease Finance Receivables and Allowance for Loan Losses - Summary of loans by type and origination year, according to our internal risk ratings (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Financing Receivable, Credit Quality Indicator [Line Items]
2020	$ 229,027
2019	996,807
2018	954,745
2017	997,179
2016	779,281
Prior	2,435,073
Revolving loans amortized cost basis	1,016,807
Revolving loans converted to term loans	57,233
Total	7,466,152	$ 7,568,319
Commercial And Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	36,167
2019	160,951
2018	88,009
2017	76,840
2016	49,874
Prior	89,364
Revolving loans amortized cost basis	447,040
Revolving loans converted to term loans	12,516
Total	960,761
Commercial Trade Financing [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	26,599
2019	18,009
2018	49,840
2017	82,231
2016	30,803
Prior	105,589
Revolving loans amortized cost basis	0
Revolving loans converted to term loans	0
Total	313,071
Real Estate Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	153,366
2019	731,611
2018	758,170
2017	754,616
2016	635,087
Prior	2,093,573
Revolving loans amortized cost basis	201,042
Revolving loans converted to term loans	20,460
Total	5,347,925
Construction Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	550
2019	13,414
2018	13,300
2017	35,130
2016	10,592
Prior	5
Revolving loans amortized cost basis	49,591
Revolving loans converted to term loans	5,463
Total	128,045
Consumer Mortgage [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	10,473
2019	66,680
2018	38,192
2017	27,198
2016	35,992
Prior	99,762
Revolving loans amortized cost basis	0
Revolving loans converted to term loans	446
Total	278,743
Dairy And Livestock And Agribusiness [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	78
2019	2,945
2018	2,988
2017	8,831
2016	6,847
Prior	14,655
Revolving loans amortized cost basis	219,424
Revolving loans converted to term loans	16,346
Total	272,114
Municipal Lease Finance Receivables [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	147
2019	0
2018	3,081
2017	10,961
2016	7,912
Prior	29,186
Revolving loans amortized cost basis	0
Revolving loans converted to term loans	0
Total	51,287	53,146
Consumer Other [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	1,647
2019	3,197
2018	1,165
2017	1,372
2016	2,174
Prior	2,939
Revolving loans amortized cost basis	99,710
Revolving loans converted to term loans	2,002
Total	114,206
Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	227,961
2019	991,064
2018	929,806
2017	966,220
2016	762,602
Prior	2,344,233
Revolving loans amortized cost basis	961,714
Revolving loans converted to term loans	34,641
Total	7,218,241	7,321,402
Pass [Member] | Commercial And Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	35,101
2019	160,551
2018	79,808
2017	74,291
2016	48,698
Prior	85,803
Revolving loans amortized cost basis	423,186
Revolving loans converted to term loans	8,849
Total	916,287
Pass [Member] | Commercial Trade Financing [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	26,599
2019	18,009
2018	48,416
2017	77,219
2016	27,922
Prior	93,865
Revolving loans amortized cost basis	0
Revolving loans converted to term loans	0
Total	292,030
Pass [Member] | Real Estate Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	153,366
2019	726,268
2018	743,909
2017	732,319
2016	626,561
Prior	2,021,759
Revolving loans amortized cost basis	197,335
Revolving loans converted to term loans	18,747
Total	5,220,264
Pass [Member] | Construction Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	550
2019	13,414
2018	13,300
2017	35,130
2016	10,592
Prior	5
Revolving loans amortized cost basis	49,591
Revolving loans converted to term loans	5,463
Total	128,045
Pass [Member] | Consumer Mortgage [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	10,473
2019	66,680
2018	38,192
2017	26,819
2016	35,992
Prior	96,795
Revolving loans amortized cost basis	0
Revolving loans converted to term loans	0
Total	274,951
Pass [Member] | Dairy And Livestock And Agribusiness [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	78
2019	2,945
2018	1,940
2017	8,109
2016	2,831
Prior	14,655
Revolving loans amortized cost basis	192,649
Revolving loans converted to term loans	0
Total	223,207
Pass [Member] | Municipal Lease Finance Receivables [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	147
2019	0
2018	3,081
2017	10,961
2016	7,912
Prior	28,739
Revolving loans amortized cost basis	0
Revolving loans converted to term loans	0
Total	50,840
Pass [Member] | Consumer Other [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	1,647
2019	3,197
2018	1,160
2017	1,372
2016	2,094
Prior	2,612
Revolving loans amortized cost basis	98,953
Revolving loans converted to term loans	1,582
Total	112,617
Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	1,066
2019	5,600
2018	16,677
2017	20,077
2016	9,107
Prior	66,865
Revolving loans amortized cost basis	38,814
Revolving loans converted to term loans	6,128
Total	164,334	173,486
Special Mention [Member] | Commercial And Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	1,066
2019	257
2018	7,405
2017	1,694
2016	539
Prior	3,524
Revolving loans amortized cost basis	12,598
Revolving loans converted to term loans	2,442
Total	29,525
Special Mention [Member] | Commercial Trade Financing [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
2017	1,177
2016	1,277
Prior	7,809
Revolving loans amortized cost basis	0
Revolving loans converted to term loans	0
Total	10,263
Special Mention [Member] | Real Estate Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	5,343
2018	9,106
2017	16,484
2016	7,211
Prior	52,995
Revolving loans amortized cost basis	3,457
Revolving loans converted to term loans	0
Total	94,596
Special Mention [Member] | Construction Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
2017	0
2016	0
Prior	0
Revolving loans amortized cost basis	0
Revolving loans converted to term loans	0
Total	0
Special Mention [Member] | Consumer Mortgage [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
2017	0
2016	0
Prior	1,942
Revolving loans amortized cost basis	0
Revolving loans converted to term loans	0
Total	1,942
Special Mention [Member] | Dairy And Livestock And Agribusiness [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	166
2017	722
2016	0
Prior	0
Revolving loans amortized cost basis	22,150
Revolving loans converted to term loans	3,686
Total	26,724
Special Mention [Member] | Municipal Lease Finance Receivables [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
2017	0
2016	0
Prior	447
Revolving loans amortized cost basis	0
Revolving loans converted to term loans	0
Total	447
Special Mention [Member] | Consumer Other [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
2017	0
2016	80
Prior	148
Revolving loans amortized cost basis	609
Revolving loans converted to term loans	0
Total	837
Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	143
2018	8,262
2017	10,882
2016	7,572
Prior	23,975
Revolving loans amortized cost basis	16,279
Revolving loans converted to term loans	16,464
Total	83,577	73,431
Substandard [Member] | Commercial And Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	143
2018	796
2017	855
2016	637
Prior	37
Revolving loans amortized cost basis	11,256
Revolving loans converted to term loans	1,225
Total	14,949
Substandard [Member] | Commercial Trade Financing [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	1,424
2017	3,835
2016	1,604
Prior	3,915
Revolving loans amortized cost basis	0
Revolving loans converted to term loans	0
Total	10,778
Substandard [Member] | Real Estate Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	5,155
2017	5,813
2016	1,315
Prior	18,819
Revolving loans amortized cost basis	250
Revolving loans converted to term loans	1,713
Total	33,065
Substandard [Member] | Construction Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
2017	0
2016	0
Prior	0
Revolving loans amortized cost basis	0
Revolving loans converted to term loans	0
Total	0
Substandard [Member] | Consumer Mortgage [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
2017	379
2016	0
Prior	1,025
Revolving loans amortized cost basis	0
Revolving loans converted to term loans	446
Total	1,850
Substandard [Member] | Dairy And Livestock And Agribusiness [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	882
2017	0
2016	4,016
Prior	0
Revolving loans amortized cost basis	4,625
Revolving loans converted to term loans	12,660
Total	22,183
Substandard [Member] | Municipal Lease Finance Receivables [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
2017	0
2016	0
Prior	0
Revolving loans amortized cost basis	0
Revolving loans converted to term loans	0
Total	0
Substandard [Member] | Consumer Other [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	5
2017	0
2016	0
Prior	179
Revolving loans amortized cost basis	148
Revolving loans converted to term loans	420
Total	752
Doubtful [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
2017	0
2016	0
Prior	0
Revolving loans amortized cost basis	0
Revolving loans converted to term loans	0
Total	0	$ 0
Doubtful [Member] | Commercial And Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
2017	0
2016	0
Prior	0
Revolving loans amortized cost basis	0
Revolving loans converted to term loans	0
Total	0
Doubtful [Member] | Commercial Trade Financing [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
2017	0
2016	0
Prior	0
Revolving loans amortized cost basis	0
Revolving loans converted to term loans	0
Total	0
Doubtful [Member] | Real Estate Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
2017	0
2016	0
Prior	0
Revolving loans amortized cost basis	0
Revolving loans converted to term loans	0
Total	0
Doubtful [Member] | Construction Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
2017	0
2016	0
Prior	0
Revolving loans amortized cost basis	0
Revolving loans converted to term loans	0
Total	0
Doubtful [Member] | Consumer Mortgage [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
2017	0
2016	0
Prior	0
Revolving loans amortized cost basis	0
Revolving loans converted to term loans	0
Total	0
Doubtful [Member] | Dairy And Livestock And Agribusiness [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
2017	0
2016	0
Prior	0
Revolving loans amortized cost basis	0
Revolving loans converted to term loans	0
Total	0
Doubtful [Member] | Municipal Lease Finance Receivables [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
2017	0
2016	0
Prior	0
Revolving loans amortized cost basis	0
Revolving loans converted to term loans	0
Total	0
Doubtful [Member] | Consumer Other [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
2017	0
2016	0
Prior	0
Revolving loans amortized cost basis	0
Revolving loans converted to term loans	0
Total	$ 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 (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial real estate, Non-owner occupied		$ 3,290,967
Total Gross loans	$ 7,466,152	7,568,319
Commercial And Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	960,761	935,127
Total Gross loans	960,761
SBA [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	313,071	305,008
Total Gross loans	313,071
Commercial real estate, owner occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		2,083,650
Total Gross loans	2,070,360	2,083,650
Construction, Speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		106,895
Construction, Non-speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		10,030
SFR mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	278,743	283,468
Total Gross loans	278,743
Dairy & Livestock and Agribusiness [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	272,114	383,709
Total Gross loans	272,114
Municipal Lease Finance Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	51,287	53,146
Total Gross loans	51,287	53,146
Consumer Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross	114,206	116,319
Total Gross loans	114,206
Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial real estate, Non-owner occupied		3,280,580
Total Gross loans	7,218,241	7,321,402
Pass [Member] | Commercial And Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		895,234
Total Gross loans	916,287
Pass [Member] | SBA [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		283,430
Total Gross loans	292,030
Pass [Member] | Commercial real estate, owner occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		1,977,007
Pass [Member] | Construction, Speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		106,895
Pass [Member] | Construction, Non-speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		10,030
Pass [Member] | SFR mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		280,010
Total Gross loans	274,951
Pass [Member] | Dairy & Livestock and Agribusiness [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		320,670
Total Gross loans	223,207
Pass [Member] | Municipal Lease Finance Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		52,676
Total Gross loans	50,840
Pass [Member] | Consumer Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		114,870
Total Gross loans	112,617
Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial real estate, Non-owner occupied		10,005
Total Gross loans	164,334	173,486
Special Mention [Member] | Commercial And Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		35,473
Total Gross loans	29,525
Special Mention [Member] | SBA [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		11,032
Total Gross loans	10,263
Special Mention [Member] | Commercial real estate, owner occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		78,208
Special Mention [Member] | Construction, Speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		0
Special Mention [Member] | Construction, Non-speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		0
Special Mention [Member] | SFR mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		1,957
Total Gross loans	1,942
Special Mention [Member] | Dairy & Livestock and Agribusiness [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		35,920
Total Gross loans	26,724
Special Mention [Member] | Municipal Lease Finance Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		470
Total Gross loans	447
Special Mention [Member] | Consumer Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		421
Total Gross loans	837
Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial real estate, Non-owner occupied		382
Total Gross loans	83,577	73,431
Substandard [Member] | Commercial And Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		4,420
Total Gross loans	14,949
Substandard [Member] | SBA [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		10,546
Total Gross loans	10,778
Substandard [Member] | Commercial real estate, owner occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		28,435
Substandard [Member] | Construction, Speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		0
Substandard [Member] | Construction, Non-speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		0
Substandard [Member] | SFR mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		1,501
Total Gross loans	1,850
Substandard [Member] | Dairy & Livestock and Agribusiness [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		27,119
Total Gross loans	22,183
Substandard [Member] | Municipal Lease Finance Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		0
Total Gross loans	0
Substandard [Member] | Consumer Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		1,028
Total Gross loans	752
Doubtful & Loss [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial real estate, Non-owner occupied		0
Total Gross loans	0	0
Doubtful & Loss [Member] | Commercial And Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		0
Total Gross loans	0
Doubtful & Loss [Member] | SBA [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		0
Total Gross loans	0
Doubtful & Loss [Member] | Commercial real estate, owner occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		0
Doubtful & Loss [Member] | Construction, Speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		0
Doubtful & Loss [Member] | Construction, Non-speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		0
Doubtful & Loss [Member] | SFR mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		0
Total Gross loans	0
Doubtful & Loss [Member] | Dairy & Livestock and Agribusiness [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		0
Total Gross loans	0
Doubtful & Loss [Member] | Municipal Lease Finance Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		0
Total Gross loans	0
Doubtful & Loss [Member] | Consumer Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable gross		$ 0
Total Gross 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
	Mar. 31, 2020	Mar. 31, 2019
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	$ 68,660	$ 63,613
Charge-offs	(86)	(99)
Recoveries	227	187
Provision for (Recapture of) loan losses	12,000	1,500
Ending Balance	82,641	65,201
Impact of ASU 2016-13 Adoption [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	1,840
Previously Reported [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	68,660
PCI Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		204
Charge-offs		0
Recoveries		0
Provision for (Recapture of) loan losses		(24)
Ending Balance		180
Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		7,520
Charge-offs	0	0
Recoveries	2	110
Provision for (Recapture of) loan losses	2,947	(31)
Ending Balance	9,387	7,599
Commercial and Industrial [Member] | Impact of ASU 2016-13 Adoption [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	(2,442)
Commercial and Industrial [Member] | Previously Reported [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	8,880
Small Business Administration [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		1,062
Charge-offs	0	(20)
Recoveries	0	5
Provision for (Recapture of) loan losses	675	232
Ending Balance	3,946	1,279
Small Business Administration [Member] | Impact of ASU 2016-13 Adoption [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	1,818
Small Business Administration [Member] | Previously Reported [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	1,453
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		44,934
Charge-offs	0	0
Recoveries	0	0
Provision for (Recapture of) loan losses	6,251	1,144
Ending Balance	58,427	46,078
Commercial Real Estate [Member] | Impact of ASU 2016-13 Adoption [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	3,547
Commercial Real Estate [Member] | Previously Reported [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	48,629
Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		981
Charge-offs	0	0
Recoveries	3	3
Provision for (Recapture of) loan losses	3,116	(120)
Ending Balance	4,632	864
Construction [Member] | Impact of ASU 2016-13 Adoption [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	655
Construction [Member] | Previously Reported [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	858
SFR Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		2,196
Charge-offs	0	0
Recoveries	206	68
Provision for (Recapture of) loan losses	(221)	(76)
Ending Balance	281	2,188
SFR Mortgage [Member] | Impact of ASU 2016-13 Adoption [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	(2,043)
SFR Mortgage [Member] | Previously Reported [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	2,339
Dairy & Livestock and Agribusiness [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		5,215
Charge-offs	0	(78)
Recoveries	0	0
Provision for (Recapture of) loan losses	(803)	562
Ending Balance	4,266	5,699
Dairy & Livestock and Agribusiness [Member] | Impact of ASU 2016-13 Adoption [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	(186)
Dairy & Livestock and Agribusiness [Member] | Previously Reported [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	5,255
Municipal Lease Finance Receivables [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		775
Charge-offs	0	0
Recoveries	0	0
Provision for (Recapture of) loan losses	70	(37)
Ending Balance	277	738
Municipal Lease Finance Receivables [Member] | Impact of ASU 2016-13 Adoption [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	(416)
Municipal Lease Finance Receivables [Member] | Previously Reported [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	623
Consumer and Other Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance		726
Charge-offs	(86)	(1)
Recoveries	16	1
Provision for (Recapture of) loan losses	(35)	(150)
Ending Balance	1,425	$ 576
Consumer and Other Loans [Member] | Impact of ASU 2016-13 Adoption [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	907
Consumer and Other Loans [Member] | Previously Reported [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	$ 623

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	Mar. 31, 2020	Mar. 31, 2019
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment in Loans, Individually Evaluated for Impairment		$ 20,290
Recorded Investment in Loans, Collectively Evaluated for Impairment		7,575,696
Recorded Investment in Loans, Acquired with Deterioriated Credit Quality		15,356
Allowance for Loan Losses, Individually Evaluated for Impairment		435
Allowance for Loan Losses, Collectively Evaluated for Impairment		64,586
Allowance for Loan Losses, Acquired with Deterioriated Credit Quality	$ 82,600	180
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		15,356
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		180
Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment in Loans, Individually Evaluated for Impairment		8,512
Recorded Investment in Loans, Collectively Evaluated for Impairment		948,614
Recorded Investment in Loans, Acquired with Deterioriated Credit Quality		0
Allowance for Loan Losses, Individually Evaluated for Impairment		117
Allowance for Loan Losses, Collectively Evaluated for Impairment		7,482
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		4,661
Recorded Investment in Loans, Collectively Evaluated for Impairment		333,296
Recorded Investment in Loans, Acquired with Deterioriated Credit Quality		0
Allowance for Loan Losses, Individually Evaluated for Impairment		317
Allowance for Loan Losses, Collectively Evaluated for Impairment		962
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		1,589
Recorded Investment in Loans, Collectively Evaluated for Impairment		5,387,277
Recorded Investment in Loans, Acquired with Deterioriated Credit Quality		0
Allowance for Loan Losses, Individually Evaluated for Impairment		0
Allowance for Loan Losses, Collectively Evaluated for Impairment		46,078
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
Recorded Investment in Loans, Collectively Evaluated for Impairment		121,912
Recorded Investment in Loans, Acquired with Deterioriated Credit Quality		0
Allowance for Loan Losses, Individually Evaluated for Impairment		0
Allowance for Loan Losses, Collectively Evaluated for Impairment		864
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		5,051
Recorded Investment in Loans, Collectively Evaluated for Impairment		280,736
Recorded Investment in Loans, Acquired with Deterioriated Credit Quality		0
Allowance for Loan Losses, Individually Evaluated for Impairment		0
Allowance for Loan Losses, Collectively Evaluated for Impairment		2,188
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
Recorded Investment in Loans, Collectively Evaluated for Impairment		322,321
Recorded Investment in Loans, Acquired with Deterioriated Credit Quality		0
Allowance for Loan Losses, Individually Evaluated for Impairment		0
Allowance for Loan Losses, Collectively Evaluated for Impairment		5,699
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
Recorded Investment in Loans, Collectively Evaluated for Impairment		61,249
Recorded Investment in Loans, Acquired with Deterioriated Credit Quality		0
Allowance for Loan Losses, Individually Evaluated for Impairment		0
Allowance for Loan Losses, Collectively Evaluated for Impairment		738
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		477
Recorded Investment in Loans, Collectively Evaluated for Impairment		120,291
Recorded Investment in Loans, Acquired with Deterioriated Credit Quality		0
Allowance for Loan Losses, Individually Evaluated for Impairment		1
Allowance for Loan Losses, Collectively Evaluated for Impairment		575
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 ($)	Mar. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	$ 9,807,000
Total Past Due and Accruing		$ 1,653,000
Nonaccrual	6,428,000	5,277,000
Loans Not Past Due	7,456,345,000
Loans Not Past Due and accruing		7,561,389,000
Nonaccrual with No Allowance for Credit Losses	4,636,000
Loans Past Due Over 89 Days Still Accruing	0
Total Gross loans	7,466,152,000	7,568,319,000
30-59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	4,196,000
Total Past Due and Accruing		878,000
Nonaccrual	154,000	59,000
60-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	1,626,000
Total Past Due and Accruing		775,000
Nonaccrual	1,300,000	1,100,000
Greater than 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	3,985,000
Nonaccrual	4,000,000	2,900,000
Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	2,196,000
Total Past Due and Accruing		2,000
Nonaccrual	1,703,000	1,266,000
Loans Not Past Due	958,565,000
Loans Not Past Due and accruing		933,859,000
Nonaccrual with No Allowance for Credit Losses	549,000
Loans Past Due Over 89 Days Still Accruing	0
Total Gross loans	960,761,000	935,127,000
Commercial and Industrial [Member] | 30-59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	347,000
Total Past Due and Accruing		2,000
Commercial and Industrial [Member] | 60-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	362,000
Total Past Due and Accruing		0
Commercial and Industrial [Member] | Greater than 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	1,487,000
Small Business Administration [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	5,709,000
Total Past Due and Accruing		1,402,000
Nonaccrual	2,748,000	2,032,000
Loans Not Past Due	307,362,000
Loans Not Past Due and accruing		301,574,000
Nonaccrual with No Allowance for Credit Losses	2,110,000
Loans Past Due Over 89 Days Still Accruing	0
Total Gross loans	313,071,000	305,008,000
Small Business Administration [Member] | 30-59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	3,086,000
Total Past Due and Accruing		870,000
Small Business Administration [Member] | 60-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	954,000
Total Past Due and Accruing		532,000
Small Business Administration [Member] | Greater than 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	1,669,000
Commercial Real Estate Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	714,000
Total Past Due and Accruing		0
Nonaccrual	715,000	479,000
Loans Not Past Due	2,069,646,000
Loans Not Past Due and accruing		2,083,171,000
Nonaccrual with No Allowance for Credit Losses	715,000
Loans Past Due Over 89 Days Still Accruing	0
Total Gross loans	2,070,360,000	2,083,650,000
Commercial Real Estate Owner Occupied [Member] | 30-59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	154,000
Total Past Due and Accruing		0
Commercial Real Estate Owner Occupied [Member] | 60-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	310,000
Total Past Due and Accruing		0
Commercial Real Estate Owner Occupied [Member] | Greater than 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	250,000
Commercial Real Estate Non-owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	210,000
Total Past Due and Accruing		0
Nonaccrual	232,000	245,000
Loans Not Past Due	3,277,355,000
Loans Not Past Due and accruing		3,290,722,000
Nonaccrual with No Allowance for Credit Losses	232,000
Loans Past Due Over 89 Days Still Accruing	0
Total Gross loans	3,277,565,000	3,290,967,000
Commercial Real Estate Non-owner Occupied [Member] | 30-59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	210,000
Total Past Due and Accruing		0
Commercial Real Estate Non-owner Occupied [Member] | 60-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0
Total Past Due and Accruing		0
Commercial Real Estate Non-owner Occupied [Member] | Greater than 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0
Construction Speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0
Total Past Due and Accruing		0
Nonaccrual	0	0
Loans Not Past Due	116,143,000
Loans Not Past Due and accruing		106,895,000
Nonaccrual with No Allowance for Credit Losses	0
Loans Past Due Over 89 Days Still Accruing	0
Total Gross loans	116,143,000	106,895,000
Construction Speculative [Member] | 30-59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0
Total Past Due and Accruing		0
Construction Speculative [Member] | 60-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0
Total Past Due and Accruing		0
Construction Speculative [Member] | Greater than 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0
Construction Non-speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0
Total Past Due and Accruing		0
Nonaccrual	0	0
Loans Not Past Due	11,902,000
Loans Not Past Due and accruing		10,030,000
Nonaccrual with No Allowance for Credit Losses	0
Loans Past Due Over 89 Days Still Accruing	0
Total Gross loans	11,902,000	10,030,000
Construction Non-speculative [Member] | 30-59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0
Total Past Due and Accruing		0
Construction Non-speculative [Member] | 60-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0
Total Past Due and Accruing		0
Construction Non-speculative [Member] | Greater than 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0
SFR Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	719,000
Total Past Due and Accruing		249,000
Nonaccrual	864,000	878,000
Loans Not Past Due	278,024,000
Loans Not Past Due and accruing		282,341,000
Nonaccrual with No Allowance for Credit Losses	864,000
Loans Past Due Over 89 Days Still Accruing	0
Total Gross loans	278,743,000	283,468,000
SFR Mortgage [Member] | 30-59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	233,000
Total Past Due and Accruing		6,000
SFR Mortgage [Member] | 60-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0
Total Past Due and Accruing		243,000
SFR Mortgage [Member] | Greater than 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	486,000
Dairy & Livestock and Agribusiness [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	166,000
Total Past Due and Accruing		0
Nonaccrual	0	0
Loans Not Past Due	271,948,000
Loans Not Past Due and accruing		383,709,000
Nonaccrual with No Allowance for Credit Losses	0
Loans Past Due Over 89 Days Still Accruing	0
Total Gross loans	272,114,000	383,709,000
Dairy & Livestock and Agribusiness [Member] | 30-59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	166,000
Total Past Due and Accruing		0
Dairy & Livestock and Agribusiness [Member] | 60-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0
Total Past Due and Accruing		0
Dairy & Livestock and Agribusiness [Member] | Greater than 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0
Municipal Lease Finance Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0
Total Past Due and Accruing		0
Nonaccrual	0	0
Loans Not Past Due	51,287,000
Loans Not Past Due and accruing		53,146,000
Nonaccrual with No Allowance for Credit Losses	0
Loans Past Due Over 89 Days Still Accruing	0
Total Gross loans	51,287,000	53,146,000
Municipal Lease Finance Receivables [Member] | 30-59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0
Total Past Due and Accruing		0
Municipal Lease Finance Receivables [Member] | 60-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0
Total Past Due and Accruing		0
Municipal Lease Finance Receivables [Member] | Greater than 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0
Consumer and Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	93,000
Total Past Due and Accruing		0
Nonaccrual	166,000	377,000
Loans Not Past Due	114,113,000
Loans Not Past Due and accruing		115,942,000
Nonaccrual with No Allowance for Credit Losses	166,000
Loans Past Due Over 89 Days Still Accruing	0
Total Gross loans	114,206,000	116,319,000
Consumer and Other Loans [Member] | 30-59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0
Total Past Due and Accruing		0
Consumer and Other Loans [Member] | 60-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0
Total Past Due and Accruing		$ 0
Consumer and Other Loans [Member] | Greater than 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	$ 93,000

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 ($)	Mar. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing loans, current	$ 982,000	$ 1,200,000
Nonaccrual	6,428,000	5,277,000
Small Business Administration Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	2,748,000	2,032,000
Small Business Administration Loans [Member] | Financial Guarantee [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans	1,700,000	2,000,000
30-59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	154,000	59,000
60-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	1,300,000	1,100,000
90+ Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	$ 4,000,000	$ 2,900,000

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 ($) $ in Thousands	Mar. 31, 2019	Mar. 31, 2020	Dec. 31, 2019
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment, With no related allowance recorded	$ 18,724		$ 7,811
Recorded Investment, With a related allowance recorded	1,566		578
Recorded Investment, Total impaired loans	20,290	$ 2,800	8,389
Unpaid Principal Balance, With no related allowance recorded	26,435		9,075
Unpaid Principal Balance, With a related allowance recorded	1,546		671
Unpaid Principal Balance, Total impaired loans	27,981		9,746
Related Allowance, With a related allowance recorded	435		508
Related Allowance, Total impaired loans	435		508
Average Recorded Investment, With no related allowance recorded	18,910
Average Recorded Investment, With a related allowance recorded	1,585
Average Recorded Investment, Total impaired loans	20,495
Interest Income Recognized, With no related allowance recorded	41
Interest Income Recognized, Total impaired loans	41
Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment, With no related allowance recorded	8,208		1,091
Recorded Investment, With a related allowance recorded	304		253
Unpaid Principal Balance, With no related allowance recorded	12,317		1,261
Unpaid Principal Balance, With a related allowance recorded	309		347
Related Allowance, With a related allowance recorded	117		251
Average Recorded Investment, With no related allowance recorded	8,230
Average Recorded Investment, With a related allowance recorded	323
Interest Income Recognized, With no related allowance recorded	2
Small Business Administration [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment, With no related allowance recorded	3,400		2,243
Recorded Investment, With a related allowance recorded	1,261		325
Unpaid Principal Balance, With no related allowance recorded	5,779		2,734
Unpaid Principal Balance, With a related allowance recorded	1,236		324
Related Allowance, With a related allowance recorded	317		257
Average Recorded Investment, With no related allowance recorded	3,511
Average Recorded Investment, With a related allowance recorded	1,261
Interest Income Recognized, With no related allowance recorded	11
Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment, With no related allowance recorded	519		479
Unpaid Principal Balance, With no related allowance recorded	618		613
Average Recorded Investment, With no related allowance recorded	521
Commercial Real Estate Non-owner Occupied [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment, With no related allowance recorded	1,070		642
Unpaid Principal Balance, With no related allowance recorded	1,231		643
Average Recorded Investment, With no related allowance recorded	1,084
Interest Income Recognized, With no related allowance recorded	7
SFR Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment, With no related allowance recorded	5,051		2,979
Unpaid Principal Balance, With no related allowance recorded	5,865		3,310
Average Recorded Investment, With no related allowance recorded	5,082
Interest Income Recognized, With no related allowance recorded	21
Consumer and Other Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment, With no related allowance recorded	476		377
Recorded Investment, With a related allowance recorded	1
Unpaid Principal Balance, With no related allowance recorded	625		$ 514
Unpaid Principal Balance, With a related allowance recorded	1
Related Allowance, With a related allowance recorded	1
Average Recorded Investment, With no related allowance recorded	482
Average Recorded Investment, With a related allowance recorded	$ 1

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
	Mar. 31, 2020	Mar. 31, 2019
Performing TDRs [Member]
Financing Receivable, Modifications [Line Items]
Beginning balance	$ 3,112	$ 3,594
New modifications	0	0
Payoffs/payments, net and other	(299)	(295)
TDRs returned to accrual status	0	0
TDRs placed on nonaccrual status	0	0
Ending balance	2,813	3,299
Nonperforming TDRs [Member]
Financing Receivable, Modifications [Line Items]
Beginning balance	244	3,509
New modifications	0	0
Charge-offs	0	(78)
Transfer to OREO	0	(2,275)
Payoffs/payments, net and other	(244)	(879)
TDRs returned to accrual status	0	0
TDRs placed on nonaccrual status	0	0
Ending balance	0	277
Total TDRs	$ 2,813	$ 3,576

Loans and Lease Finance Rece_13

Loans and Lease Finance Receivables and Allowance for Loan Losses - Summary of Recorded Investment in Collateral-Dependent loans (Detail) $ in Thousands	Mar. 31, 2020USD ($)Collateral
Financing Receivable, Modifications [Line Items]
Real Estate	$ 4,236
Business Assets	4,176
Other	$ 38
Number of Instruments Dependent on Collateral | Collateral	43
Commercial and Industrial [Member]
Financing Receivable, Modifications [Line Items]
Real Estate	$ 112
Business Assets	1,652
Other	$ 8
Number of Instruments Dependent on Collateral | Collateral	12
Small Business Administration [Member]
Financing Receivable, Modifications [Line Items]
Real Estate	$ 1,852
Business Assets	2,524
Other	$ 8
Number of Instruments Dependent on Collateral | Collateral	19
Construction [Member]
Financing Receivable, Modifications [Line Items]
Real Estate	$ 0
Business Assets	0
Other	$ 0
Number of Instruments Dependent on Collateral | Collateral	0
SFR Mortgage [Member]
Financing Receivable, Modifications [Line Items]
Real Estate	$ 864
Business Assets	0
Other	$ 0
Number of Instruments Dependent on Collateral | Collateral	3
Dairy & Livestock and Agribusiness [Member]
Financing Receivable, Modifications [Line Items]
Real Estate	$ 0
Business Assets	0
Other	$ 0
Number of Instruments Dependent on Collateral | Collateral	0
Municipal Lease Finance Receivables [Member]
Financing Receivable, Modifications [Line Items]
Real Estate	$ 0
Business Assets	0
Other	$ 0
Number of Instruments Dependent on Collateral | Collateral	0
Consumer and Other Loans [Member]
Financing Receivable, Modifications [Line Items]
Real Estate	$ 84
Business Assets	0
Other	$ 22
Number of Instruments Dependent on Collateral | Collateral	4
Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Real Estate	$ 1,324
Business Assets	0
Other	$ 0
Number of Instruments Dependent on Collateral | Collateral	5

Earnings Per Share Reconcilia_3

Earnings Per Share Reconciliation - Additional Information (Detail) - shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Earnings Per Share [Abstract]
Antidilutive securities excluded from computation of earnings per common share	269,000	396,000

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
	Mar. 31, 2020	Mar. 31, 2019
Earnings per common share:
Net earnings	$ 37,980	$ 51,642
Less: Net earnings allocated to restricted stock	83	141
Net earnings allocated to common shareholders	$ 37,897	$ 51,501
Weighted average shares outstanding	139,107	139,615
Basic earnings per common share	$ 0.27	$ 0.37
Diluted earnings per common share:
Net income allocated to common shareholders	$ 37,897	$ 51,501
Weighted average shares outstanding	139,107	139,615
Incremental shares from assumed exercise of outstanding options	209	216
Diluted weighted average shares outstanding	139,316	139,831
Diluted earnings per common share	$ 0.27	$ 0.37

Fair Value Information - Additi

Fair Value Information - Additional Information (Detail) - USD ($)	Mar. 31, 2020	Mar. 31, 2019
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	Mar. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps, liabilities	$ 402,170	$ 440,161
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	33,255	11,502
Interest rate swaps, liabilities	33,255	11,502
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	1,713,010	1,751,759
Total liabilities	33,255	11,502
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	37,032	39,354
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	1,161,931	1,206,313
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	480,093	493,710
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	699	880
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	1,679,755	1,740,257
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	33,255	11,502
Interest rate swaps, liabilities	33,255	11,502
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	1,713,010	1,751,759
Total liabilities	33,255	11,502
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	37,032	39,354
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	1,161,931	1,206,313
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	480,093	493,710
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	699	880
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	1,679,755	1,740,257
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	33,255	11,502
Interest rate swaps, liabilities	$ 33,255	$ 11,502

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	Mar. 31, 2020	Dec. 31, 2019
Description of assets
Total assets	$ 938	$ 828
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	9,024	251
Loans, Excluding PCI Loans [Member] | Small Business Administration [Member]
Description of assets
Total assets	36	513
Loans, Excluding PCI Loans [Member] | Commercial Real Estate [Member]
Description of assets
Total assets	0	0
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	0
Loans, Excluding PCI Loans [Member] | Consumer and Other Loans [Member]
Description of assets
Total assets	0	0
Loans, Excluding PCI Loans [Member] | Other Real Estate Owned [Member]
Description of assets
Total assets	0	64
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	1,903	1,056
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	903	253
Level 3 [Member] | Loans, Excluding PCI Loans [Member] | Small Business Administration [Member]
Description of assets
Total assets	1,000	359
Level 3 [Member] | Loans, Excluding PCI Loans [Member] | Commercial Real Estate [Member]
Description of assets
Total assets	0	0
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	0
Level 3 [Member] | Loans, Excluding PCI Loans [Member] | Consumer and Other Loans [Member]
Description of assets
Total assets	0	0
Level 3 [Member] | Loans, Excluding PCI Loans [Member] | Other Real Estate Owned [Member]
Description of assets
Total assets	0	444
Carrying Value [Member]
Description of assets
Total assets	1,903	1,056
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	903	253
Carrying Value [Member] | Loans, Excluding PCI Loans [Member] | Small Business Administration [Member]
Description of assets
Total assets	1,000	359
Carrying Value [Member] | Loans, Excluding PCI Loans [Member] | Commercial Real Estate [Member]
Description of assets
Total assets	0	0
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	0
Carrying Value [Member] | Loans, Excluding PCI Loans [Member] | Consumer and Other Loans [Member]
Description of assets
Total assets	0	0
Carrying Value [Member] | Loans, Excluding PCI Loans [Member] | Other Real Estate Owned [Member]
Description of assets
Total assets	$ 0	$ 444

Fair Value Information - Estima

Fair Value Information - Estimated Fair Value of Financial Instruments (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Assets
Total cash and cash equivalents	$ 705,739	$ 185,518	$ 172,214	$ 163,948
Investment securities available-for-sale	1,679,755	1,740,257
Investment securities held-to-maturity	642,255	674,452
Total loans, net of allowance for loan losses	7,383,511	7,495,917
Deposits:
Interest-bearing	3,540,955	3,459,411
Junior subordinated debentures	25,774	25,774
Swaps	402,170	440,161
Carrying Value [Member]
Assets
Total cash and cash equivalents	705,739	185,518
Interest-earning balances due from depository institutions	23,799	2,931
Investment securities available-for-sale	1,679,755	1,740,257
Investment securities held-to-maturity	642,255	674,452
Total loans, net of allowance for loan losses	7,383,511	7,495,917
Swaps	33,255	11,502
Deposits:
Interest-bearing	3,540,955	3,459,411
Borrowings	368,915	428,659
Junior subordinated debentures	25,774	25,774
Swaps	33,255	11,502
Estimated Fair Value [Member]
Assets
Total cash and cash equivalents	705,739	185,518
Interest-earning balances due from depository institutions	23,840	2,938
Investment securities available-for-sale	1,679,755	1,740,257
Investment securities held-to-maturity	657,819	678,948
Total loans, net of allowance for loan losses	7,338,946	7,343,167
Swaps	33,255	11,502
Deposits:
Interest-bearing	3,540,407	3,457,922
Borrowings	368,654	428,330
Junior subordinated debentures	13,619	20,669
Swaps	33,255	11,502
Estimated Fair Value [Member] | Level 1 [Member]
Assets
Total cash and cash equivalents	705,739	185,518
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	23,840	2,938
Investment securities available-for-sale	1,679,755	1,740,257
Investment securities held-to-maturity	657,819	678,948
Total loans, net of allowance for loan losses	0	0
Swaps	33,255	11,502
Deposits:
Interest-bearing	3,540,407	3,457,922
Borrowings	368,654	428,330
Junior subordinated debentures	0	0
Swaps	33,255	11,502
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	7,338,946	7,343,167
Swaps	0	0
Deposits:
Interest-bearing	0	0
Borrowings	0	0
Junior subordinated debentures	13,619	20,669
Swaps	$ 0	$ 0

Derivative Financial Instrume_3

Derivative Financial Instruments - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2020USD ($)Agreement	Dec. 31, 2019USD ($)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative assets and liabilities offset in balance sheet	$ 0
Total notional amount of the Company's swaps	$ 269,800,000	$ 260,000,000
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	91

Derivative Financial Instrume_4

Derivative Financial Instruments - Fair Value of Derivative Instruments (Detail) - Derivatives Not Designated as Hedging Instruments [Member] - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Other Assets [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	$ 33,255	$ 11,502
Other Assets [Member] | Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	33,255	11,502
Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	33,255	11,502
Other Liabilities [Member] | Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	$ 33,255	$ 11,502

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
	Mar. 31, 2020	Mar. 31, 2019
Derivatives, Fair Value [Line Items]
Amount of Gain Recognized in Income on Derivative Instruments	$ 373	$ 384
Interest Rate Swaps [Member] | Other Income [Member]
Derivatives, Fair Value [Line Items]
Amount of Gain Recognized in Income on Derivative Instruments	$ 373	$ 384

Other Comprehensive Income - Su

Other Comprehensive Income - Summary of Components of OCI (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Equity [Abstract]
Net change in fair value recorded in accumulated OCI, Before-tax	$ 36,619	$ 19,350
Net change in fair value recorded in accumulated OCI, Tax effect	(10,826)	(5,720)
Net change in fair value recorded in accumulated OCI, After-tax	25,793	13,630
Amortization of unrealized losses on securities transferred from available-for-sale to held-to-maturity, Before-tax	(1)	(1,123)
Amortization of unrealized losses on securities transferred from available-for-sale to held-to-maturity, Tax effect	0	332
Amortization of unrealized losses on securities transferred from available-for-sale to held-to-maturity, After-tax	(1)	(791)
Net change, Before-tax	36,618	18,227
Net change, Tax effect	(10,826)	(5,388)
Net change, After-tax	$ 25,792	$ 12,839

Balance Sheet Offsetting - Sche

Balance Sheet Offsetting - Schedule of Balance Sheet Offsetting (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Offsetting Assets Liabilities [Line Items]
Financial liabilities, Gross Amounts Recognized in the Condensed Consolidated Balance Sheets	$ 402,170	$ 440,278
Financial liabilities, Gross Amounts Offset in the Condensed Consolidated Balance Sheets	0	(117)
Financial liabilities, Net Amounts Presented in the Condensed Consolidated Balance Sheets	402,170	440,161
Financial liabilities, Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Financial Instruments	0	117
Financial liabilities, Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Collateral Pledged	(469,836)	(533,450)
Financial liabilities, Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Net Amount	(67,666)	(93,172)
Repurchase Agreements [Member]
Offsetting Assets Liabilities [Line Items]
Financial liabilities, Gross Amounts Recognized in the Condensed Consolidated Balance Sheets	368,915	428,659
Financial liabilities, Gross Amounts Offset in the Condensed Consolidated Balance Sheets	0	0
Financial liabilities, Net Amounts Presented in the Condensed Consolidated Balance Sheets	368,915	428,659
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	(417,665)	(510,138)
Financial liabilities, Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Net Amount	(48,750)	(81,479)
Interest Rate Swaps [Member]
Offsetting Assets Liabilities [Line Items]
Financial assets, Gross Amounts Recognized in the Condensed Consolidated Balance Sheets	33,255	11,502
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	33,255	11,502
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	33,255	11,502
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	33,255	11,502
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	33,255	11,502
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	33,255	11,502
Financial liabilities, Gross Amounts Recognized in the Condensed Consolidated Balance Sheets	33,255	11,619
Financial liabilities, Gross Amounts Offset in the Condensed Consolidated Balance Sheets	0	(117)
Financial liabilities, Net Amounts Presented in the Condensed Consolidated Balance Sheets	33,255	11,502
Financial liabilities, Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Financial Instruments	0	117
Financial liabilities, Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Collateral Pledged	(52,171)	(23,312)
Financial liabilities, Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Net Amount	$ (18,916)	$ (11,693)

Leases - Components of lease co

Leases - Components of lease costs and supplemental information related to leases (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Lease Assets and Liabilities
ROU assets	$ 16,917		$ 18,522
Total lease liabilities	19,484		$ 21,392
Lease Cost
Operating lease expense	1,623	$ 2,100
Total lease expense	1,623	2,100
Other Information
Operating cash outflows from operating leases, net	$ 1,935	$ 2,746
Lease Term and Discount Rate
Weighted average remaining lease term (years)	3 years 11 months 26 days		4 years 2 months 4 days
Weighted average discount rate	3.34%		3.34%

Leases - Future lease payments

Leases - Future lease payments required for leases that have initial or remaining non-cancelable lease terms (Detail) $ in Thousands	Mar. 31, 2020USD ($)
2020 (excluding the three months ended March 31, 2020)	$ 5,179
2021	5,509
2022	4,322
2023	2,540
2024	1,495
Thereafter	1,781
Total future lease payments	20,826
Less: Imputed interest	(1,342)
Present value of lease liabilities	$ 19,484

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
	Mar. 31, 2020	Mar. 31, 2019
Noninterest income:
Gain on OREO, net	$ 0	$ 105
Other	1,798	2,044
Total noninterest income	11,640	16,303
Service Charges on Deposit Accounts [Member]
Noninterest income:
Revenue from contract with customer	4,776	5,141
Trust and Investment Services [Member]
Noninterest income:
Revenue from contract with customer	2,420	2,182
Bankcard Services [Member]
Noninterest income:
Revenue from contract with customer	577	950
Accounting Standards Update 2014-09 [Member]
Noninterest income:
Gain on OREO, net	10	105
Other	1,798	2,044
Total noninterest income	9,581	10,422
Accounting Standards Update 2014-09 [Member] | Service Charges on Deposit Accounts [Member]
Noninterest income:
Revenue from contract with customer	4,776	5,141
Accounting Standards Update 2014-09 [Member] | Trust and Investment Services [Member]
Noninterest income:
Revenue from contract with customer	2,420	2,182
Accounting Standards Update 2014-09 [Member] | Bankcard Services [Member]
Noninterest income:
Revenue from contract with customer	577	950
Accounting Standards Update 2014-09 Not Adopted [Member]
Noninterest income:
Total noninterest income	$ 2,059	$ 5,881