TriCo Bancshares (TCBK) 10-Q 6 Aug 21 2021 Q2 Quarterly report Financial data

Cover Page

Cover Page - shares	6 Months Ended
	Jun. 30, 2021	Aug. 06, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2021
Document Transition Report	false
Entity File Number	000-10661
Entity Incorporation, State or Country Code	CA
Entity Tax Identification Number	94-2792841
Entity Address, Address Line One	63 Constitution Drive
Entity Address, City or Town	Chico
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	95973
City Area Code	530
Local Phone Number	898-0300
Title of 12(b) Security	Common Stock
Trading Symbol	TCBK
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		29,711,934
Entity Registrant Name	TriCo Bancshares
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--12-31
Entity Central Index Key	0000356171

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Assets:
Cash and due from banks	$ 86,052	$ 77,253
Cash at Federal Reserve and other banks	553,688	592,298
Cash and cash equivalents	639,740	669,551
Investment securities:
Marketable equity securities	2,979	3,025
Available for sale debt securities, net of allowance for credit losses of $—	1,847,568	1,414,264
Held to maturity debt securities, net of allowance for credit losses of $—	235,778	284,563
Restricted equity securities	17,250	17,250
Loans held for sale	5,723	6,268
Loans	4,944,894	4,763,127
Allowance for credit losses	(86,062)	(91,847)
Total loans, net	4,858,832	4,671,280
Premises and equipment, net	79,178	83,731
Cash value of life insurance	120,287	118,870
Accrued interest receivable	18,923	20,004
Goodwill	220,872	220,872
Other intangible assets, net	14,971	17,833
Operating leases, right-of-use	26,365	27,846
Other assets	81,899	84,172
Total assets	8,170,365	7,639,529
Deposits:
Noninterest-bearing demand	2,843,783	2,581,517
Interest-bearing	4,148,270	3,924,417
Total deposits	6,992,053	6,505,934
Accrued interest payable	1,026	1,362
Operating lease liability	26,707	27,973
Other liabilities	85,388	94,597
Other borrowings	40,559	26,914
Junior subordinated debt	57,852	57,635
Total liabilities	7,203,585	6,714,415
Commitments and contingencies (Note 7)
Shareholders’ equity:
Preferred stock, no par value: 1,000,000 shares authorized, zero issued and outstanding at June 30, 2021 and December 31, 2020	0	0
Common stock, no par value: 50,000,000 shares authorized; 29,716,294 and 29,727,214 issued and outstanding at June 30, 2021 and December 31, 2020, respectively	531,038	530,835
Retained earnings	427,575	381,999
Accumulated other comprehensive income, net of tax	8,167	12,280
Total shareholders’ equity	966,780	925,114
Total liabilities and shareholders’ equity	$ 8,170,365	$ 7,639,529

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Available-for-sale, allowance for credit loss	$ 0	$ 0
Held-to-maturity, allowance for credit loss	$ 0	$ 0
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, shares authorized (in shares)	50,000,000	50,000,000
Common stock, shares issued (in shares)	29,716,294	29,727,214
Common stock, shares outstanding (in shares)	29,716,294	29,727,214

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Interest and dividend income:
Loans, including fees	$ 60,304	$ 58,409	$ 120,740	$ 114,667
Investments:
Taxable securities	6,934	7,466	13,111	15,677
Tax exempt securities	851	952	1,774	1,856
Dividends	255	223	472	584
Interest bearing cash at Federal Reserve and other banks	135	98	298	881
Total interest and dividend income	68,479	67,148	136,395	133,665
Interest expense:
Deposits	828	1,813	1,765	4,364
Other borrowings	5	4	9	9
Junior subordinated debt	563	672	1,098	1,441
Total interest expense	1,396	2,489	2,872	5,814
Net interest income	67,083	64,659	133,523	127,851
Provision for (reversal of) credit losses	(260)	22,244	(6,320)	30,313
Net interest income after credit loss provision (reversal)	67,343	42,415	139,843	97,538
Non-interest income:
Service charges and fees	10,930	8,168	21,406	17,294
Gain on sale of loans	2,847	1,736	6,094	2,627
Gain on sale of investment securities	0	0	0	0
Asset management and commission income	947	661	1,781	1,577
Increase in cash value of life insurance	745	710	1,418	1,430
Other	488	382	1,368	549
Total non-interest income	15,957	11,657	32,067	23,477
Non-interest expense:
Salaries and related benefits	27,081	27,055	52,411	54,327
Other	17,090	18,495	33,378	35,973
Total non-interest expense	44,171	45,550	85,789	90,300
Income before provision for income taxes	39,129	8,522	86,121	30,715
Provision for income taxes	10,767	1,092	24,110	7,164
Net income	$ 28,362	$ 7,430	$ 62,011	$ 23,551
Per share data:
Basic earnings per share (in USD per share)	$ 0.95	$ 0.25	$ 2.09	$ 0.78
Diluted earnings per share (in USD per share)	0.95	0.25	2.07	0.78
Dividend per share (in USD per share)	$ 0.25	$ 0.22	$ 0.50	$ 0.44

Condensed Consolidated Statem_2

Condensed Consolidated Statement of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 28,362	$ 7,430	$ 62,011	$ 23,551
Other comprehensive income (loss), net of tax:
Unrealized gains (losses) on available for sale securities arising during the period	5,206	24,625	(3,484)	3,803
Change in minimum pension liability	0	1,126	0	2,038
Change in joint beneficiary agreements	0	0	(629)	0
Other comprehensive income (loss)	5,206	25,751	(4,113)	5,841
Comprehensive income	$ 33,568	$ 33,181	$ 57,898	$ 29,392

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Changes In Shareholders' Equity - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Cumulative Effect, Period Of Adoption, Adjusted Balance	Common Stock	Common StockCumulative Effect, Period Of Adoption, Adjusted Balance	Retained Earnings	Retained EarningsCumulative Effect, Period of Adoption, Adjustment	Retained EarningsCumulative Effect, Period Of Adoption, Adjusted Balance	Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss)Cumulative Effect, Period Of Adoption, Adjusted Balance
Beginning balance at Dec. 31, 2019	$ 906,570	$ (12,983)	$ 893,587	$ 543,998	$ 543,998	$ 367,794	$ (12,983)	$ 354,811	$ (5,222)	$ (5,222)
Beginning balance (in shares) at Dec. 31, 2019				30,523,824	30,523,824
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	23,551					23,551
Other comprehensive income (loss)	5,841								5,841
Stock options exercised	288			$ 288
Stock options exercised (in shares)				16,000
RSU vesting	635			$ 635
PSU vesting	296			$ 296
RSUs released (in shares)				29,089
PSUs released (in shares)				20,265
Repurchase of common stock	(25,304)			$ (14,795)		(10,509)
Repurchase of common stock (in shares)				(829,969)
Dividends paid	(13,208)					(13,208)
Ending balance at Jun. 30, 2020	885,686			$ 530,422		354,645			619
Ending balance (in shares) at Jun. 30, 2020				29,759,209
Beginning balance at Mar. 31, 2020	866,426			$ 534,623		356,935			(25,132)
Beginning balance (in shares) at Mar. 31, 2020				29,973,516
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	7,430					7,430
Other comprehensive income (loss)	25,751								25,751
Stock options exercised	140			$ 140
Stock options exercised (in shares)				8,000
RSU vesting	338			$ 338
PSU vesting	154			$ 154
RSUs released (in shares)				28,727
PSUs released (in shares)				20,265
Repurchase of common stock	(8,009)			$ (4,833)		(3,176)
Repurchase of common stock (in shares)				(271,299)
Dividends paid	(6,544)					(6,544)
Ending balance at Jun. 30, 2020	885,686			$ 530,422		354,645			619
Ending balance (in shares) at Jun. 30, 2020				29,759,209
Beginning balance at Dec. 31, 2020	$ 925,114			$ 530,835		381,999			12,280
Beginning balance (in shares) at Dec. 31, 2020	29,727,214			29,727,214
Ending balance at Mar. 31, 2021	$ 942,539			$ 531,367		408,211			2,961
Ending balance (in shares) at Mar. 31, 2021				29,727,122
Beginning balance at Dec. 31, 2020	$ 925,114			$ 530,835		381,999			12,280
Beginning balance (in shares) at Dec. 31, 2020	29,727,214			29,727,214
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 62,011					62,011
Other comprehensive income (loss)	(4,113)								(4,113)
Stock options exercised	$ 28			$ 28
Stock options exercised (in shares)	1,675			1,675
RSU vesting	$ 757			$ 757
PSU vesting	406			$ 406
RSUs released (in shares)				42,712
Repurchase of common stock	(2,561)			$ (988)		(1,573)
Repurchase of common stock (in shares)				(55,307)
Dividends paid	(14,862)					(14,862)
Ending balance at Jun. 30, 2021	$ 966,780			$ 531,038		427,575			8,167
Ending balance (in shares) at Jun. 30, 2021	29,716,294			29,716,294
Beginning balance at Mar. 31, 2021	$ 942,539			$ 531,367		408,211			2,961
Beginning balance (in shares) at Mar. 31, 2021				29,727,122
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	28,362					28,362
Other comprehensive income (loss)	5,206								5,206
Stock options exercised	28			$ 28
Stock options exercised (in shares)				1,675
RSU vesting	405			$ 405
PSU vesting	221			$ 221
RSUs released (in shares)				42,511
PSUs released (in shares)				0
Repurchase of common stock	(2,551)			$ (983)		(1,568)
Repurchase of common stock (in shares)				(55,014)
Dividends paid	(7,430)					(7,430)
Ending balance at Jun. 30, 2021	$ 966,780			$ 531,038		$ 427,575			$ 8,167
Ending balance (in shares) at Jun. 30, 2021	29,716,294			29,716,294

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Changes In Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Common Stock
Dividends paid, per share (in USD per share)	$ 0.25	$ 0.22	$ 0.50	$ 0.44

Condensed Consolidated Statem_5

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Operating activities:
Net income	$ 62,011	$ 23,551
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of premises and equipment, and amortization	3,357	3,193
Amortization of intangible assets	2,862	2,862
Provision for (reversal of) credit losses on loans	(6,385)	30,089
Amortization of investment securities premium, net	2,855	1,054
Gain on sale of investment securities	0	0
Originations of loans for resale	(129,684)	(84,872)
Proceeds from sale of loans originated for resale	135,353	83,867
Gain on sale of loans	(6,094)	(2,627)
Change in market value of mortgage servicing rights	459	2,494
Provision for losses on foreclosed assets	9	106
Gain on transfer of loans to foreclosed assets	(20)	0
Gain on sale of foreclosed assets	(46)	(57)
Operating lease expense payments	(2,430)	(2,480)
(Gain) loss on disposal of fixed assets	(426)	15
Increase in cash value of life insurance	(1,418)	(1,430)
Loss (gain) on marketable equity securities	45	(72)
Equity compensation vesting expense	1,163	931
Change in:
Interest receivable	1,081	(1,440)
Interest payable	(336)	(673)
Amortization of operating lease ROUA	2,645	2,720
Other assets and liabilities, net	(6,195)	6,474
Net cash from operating activities	58,806	63,705
Investing activities:
Proceeds from maturities of securities available for sale	180,046	60,637
Proceeds from maturities of securities held to maturity	48,269	37,905
Purchases of securities available for sale	(620,634)	(101,899)
Loan origination and principal collections, net	(79,803)	(493,437)
Loans purchased	(101,466)	0
Proceeds from sale of other real estate owned	756	570
Proceeds from sale of premises and equipment	2,700	0
Purchases of premises and equipment	(854)	(1,266)
Net cash used by investing activities	(570,986)	(497,490)
Financing activities:
Net change in deposits	486,119	881,264
Net change in other borrowings	13,645	20,090
Repurchase of common stock, net of option exercises	(2,561)	(25,164)
Dividends paid	(14,862)	(13,208)
Exercise of stock options	28	148
Net cash from financing activities	482,369	863,130
Net change in cash and cash equivalents	(29,811)	429,345
Cash and cash equivalents, beginning of period	669,551	276,507
Cash and cash equivalents, end of period	639,740	705,852
Supplemental disclosure of noncash activities:
Unrealized (loss) gain on securities available for sale	(4,945)	5,398
Market value of shares tendered in-lieu of cash to pay for exercise of options and/or related taxes	451	494
Obligations incurred in conjunction with leased assets	1,308	4,068
Loans transferred to foreclosed assets	102	0
Supplemental disclosure of cash flow activity:
Cash paid for interest expense	3,208	6,487
Cash paid for income taxes	$ 33,300	$ 0

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2021
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Description of Business and Basis of Presentation TriCo Bancshares (the “Company” or “we”) is a California corporation organized to act as a bank holding company for Tri Counties Bank (the “Bank”). The Company and the Bank are headquartered in Chico, California. The Bank is a California-chartered bank that is engaged in the general commercial banking business in 28 California counties. The Company has five capital subsidiary business trusts (collectively, the “Capital Trusts”) that issued trust preferred securities, including two organized by the Company and three acquired with the acquisition of North Valley Bancorp. The consolidated financial statements are prepared in accordance with accounting policies generally accepted in the United States of America and general practices in the banking industry. All adjustments necessary for a fair presentation of these consolidated financial statements have been included and are of a normal and recurring nature. The financial statements include the accounts of the Company. All inter-company accounts and transactions have been eliminated in consolidation. For financial reporting purposes, the Company’s investments in the Capital Trusts of $1,737,000 are accounted for under the equity method and, accordingly, are not consolidated and are included in other assets on the consolidated balance sheet. The subordinated debentures issued and guaranteed by the Company and held by the Capital Trusts are reflected as debt on the Company’s consolidated balance sheet. Use of Estimates in the Preparation of Financial Statements The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires Management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions. Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission. These unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020 (the “2020 Annual Report”). The Company believes that the disclosures made are adequate to make the information not misleading. Segment and Significant Group Concentration of Credit Risk The Company grants agribusiness, commercial, consumer, and residential loans to customers located throughout northern and central California. The Company has a diversified loan portfolio within the business segments located in this geographical area. The Company currently classifies all its operation into one business segment that it denotes as community banking. Geographical Descriptions For the purpose of describing the geographical location of the Company’s operations, the Company has defined northern California as that area of California north of, and including, Stockton to the east and San Jose to the west; central California as that area of the state south of Stockton and San Jose, to and including, Bakersfield to the east and San Luis Obispo to the west; and southern California as that area of the state south of Bakersfield and San Luis Obispo. Reclassification Some items in the prior year consolidated financial statements were reclassified to conform to the current presentation. Reclassifications had no effect on prior year net income or shareholders’ equity. Cash and Cash Equivalents Net cash flows are reported for loan and deposit transactions and other borrowings. For purposes of the consolidated statement of cash flows, cash, due from banks with original maturities less than 90 days, interest-earning deposits in other banks, and Federal funds sold are considered to be cash equivalents. Allowance for Credit Losses - Securities The Company measures expected credit losses on held-to-maturity debt securities on a collective basis by major security type, then further disaggregated by sector and bond rating. Accrued interest receivable on held-to-maturity (HTM) debt securities totaled was considered insignificant at June 30, 2021 and is therefore excluded from the estimate of credit losses. The estimate of expected credit losses considers historical credit loss information that is adjusted for current condition and reasonable and supportable forecasts based on current and expected changes in credit ratings and default rates. Based on the implied guarantees of the U. S. Government or its agencies related to certain of these investment securities, and the absence of any historical or expected losses, substantially all qualify for a zero loss assumption. Management has separately evaluated its HTM investment securities from obligations of state and political subdivisions utilizing the historical loss data represented by similar securities over a period of time spanning nearly 50 years. As a result of this evaluation, management determined that the expected credit losses associated with these securities is not significant for financial reporting purposes and therefore, no allowance for credit losses has been recognized. The Company evaluates available for sale debt securities in an unrealized loss position to determine whether the decline in the fair value below the amortized cost basis (impairment) is due to credit-related factors or noncredit-related factors. Any impairment that is not credit related is recognized in other comprehensive income, net of applicable taxes. Credit-related impairment is recognized as an allowance for credit losses on the balance sheet, limited to the amount by which the amortized cost basis exceeds the fair value, with a corresponding adjustment to earnings. Both the allowance for credit losses and the adjustment to net income may be reversed if conditions change. However, if the Company intends to sell an impaired available for sale debt security or more likely than not will be required to sell such a security before recovering its amortized cost basis, the entire impairment amount is recognized in earnings with a corresponding adjustment to the security's amortized cost basis. In evaluating available for sale debt securities in unrealized loss positions for impairment and the criteria regarding its intent or requirement to sell such securities, the Company considers the extent to which fair value is less than amortized cost, whether the securities are issued by the federal government or its agencies, whether downgrades by bond rating agencies have occurred, and the results of reviews of the issuers' financial condition, among other factors. Changes in the allowance for credit losses are recorded as provision for (or reversal of) credit loss expense. Losses are charged against the ACL when management believes the uncollectability of an available for sale debt security is confirmed or when either of the criteria regarding intent or requirement to sell is met. No security credit losses were recognized during the six month periods ended June 30, 2021 and 2020, respectively. Loans Loans that management has the intent and ability to hold until maturity or payoff are reported at principle amount outstanding, net of deferred loan fees and costs. Loans are placed in nonaccrual status when reasonable doubt exists as to the full, timely collection of interest or principal, or a loan becomes contractually past due by 90 days or more with respect to interest or principal and is not well secured and in the process of collection. When a loan is placed on nonaccrual status, all interest previously accrued but not collected is reversed against interest income. Income on such loans is then recognized only to the extent that cash is received and where the future collection of principal is considered probable. Interest accruals are resumed on such loans only when they are brought fully current with respect to interest and principal and when, in the judgment of Management, the loan is estimated to be fully collectible as to both principal and interest. Accrued interest receivable is not included in the calculation of the allowance for credit losses. Allowance for Credit Losses - Loans The allowance for credit losses (ACL) is a valuation account that is deducted from the loan's amortized cost basis to present the net amount expected to be collected on the loans. Loans are charged off against the allowance when management believes the recorded loan balance is confirmed as uncollectible. Expected recoveries do not exceed the aggregate of amounts previously charged-off and expected to be charged-off. Regardless of the determination that a charge-off is appropriate for financial accounting purposes, the Company manages its loan portfolio by continually monitoring, where possible, a borrower's ability to pay through the collection of financial information, delinquency status, borrower discussion and the encouragement to repay in accordance with the original contract or modified terms, if appropriate. Management estimates the allowance balance using relevant information, from internal and external sources, relating to past events, current conditions, and reasonable and supportable forecasts. The allowance for credit losses is measured on a collective (pool) basis when similar risk characteristics exist. Historical credit loss experience provides the basis for the estimation of expected credit losses, which captures loan balances as of a point in time to form a cohort, then tracks the respective losses generated by that cohort of loans over the remaining life. The Company identified and accumulated loan cohort historical loss data beginning with the fourth quarter of 2008 and through the current period. In situations where the Company's actual loss history was not statistically relevant, the loss history of peers, defined as financial institutions with assets greater than three billion and less than ten billion, were utilized to create a minimum loss rate. Adjustments to historical loss information are made for differences in relevant current loan-specific risk characteristics, such as historical timing of losses relative to the loan origination. In its loss forecasting framework, the Company incorporates forward-looking information through the use of macroeconomic scenarios applied over the forecasted life of the assets. These macroeconomic scenarios incorporate variables that have historically been key drivers of increases and decreases in credit losses. These variables include, but are not limited to changes in environmental conditions, such as California unemployment rates, household debt levels and U.S. gross domestic product. A loan is considered to be collateral dependent when repayment is expected to be provided substantially through the operation or sale of the collateral. The ACL on collateral dependent loans is measured using the fair value of the underlying collateral, adjusted for costs to sell when applicable, less the amortized cost basis of the financial asset. If the value of underlying collateral is determined to be less than the recorded amount of the loan, a charge-off will be taken. Loans for which the terms have been modified resulting in a concession, and for which the borrower is experiencing financial difficulties, is considered to be a troubled debt restructuring (TDR). The ACL on a TDR is measured using the same method as all other portfolio loans, except when the value of a concession cannot be measured using a method other than the discounted cash flow method. When the value of a concession is measured using the discounted cash flow method, the ACL is determined by discounting the expected future cash flows at the original interest rate of the loan. The Company has identified the following portfolio segments to evaluate and measure the allowance for credit loss: Commercial real estate : Commercial real estate - Non-owner occupied: These commercial properties typically consist of buildings which are leased to others for their use and rely on rents as the primary source of repayment. Property types are predominantly office, retail, or light industrial but the portfolio also has some special use properties. As such, the risk of loss associated with these properties is primarily driven by general economic changes or changes in regional economies and the impact of such on a tenant’s ability to pay. Ultimately this can affect occupancy, rental rates, or both. Additional risk of loss can come from new construction resulting in oversupply, the costs to hold or operate the property, or changes in interest rates. The terms on these loans at origination typically have maturities from five fifteen Commercial real estate - Owner occupied: These credits are primarily susceptible to changes in the financial condition of the business operated by the property owner. This may be driven by changes in, among other things, industry challenges, factors unique to the operating geography of the borrower, change in the individual fortunes of the business owner, general economic conditions and changes in business cycles. When default is driven by issues related specifically to the business owner, collateral values tend to provide better repayment support and may result in little or no loss. Alternatively, when default is driven more by general economic conditions, the underlying collateral may have devalued more and thus result in larger losses in the event of default. The terms on these loans at origination typically have maturities from five fifteen Multifamily: These commercial properties are generally comprised of more than four rentable units, such as apartment buildings, with each unit intended to be occupied as the primary residence for one or more persons. Multifamily properties are also subject to changes in general or regional economic conditions, such as unemployment, ultimately resulting in increased vacancy rates or reduced rents or both. In addition, new construction can create an oversupply condition and market competition resulting in increased vacancy, reduced market rents, or both. Due to the nature of their use and the greater likelihood of tenant turnover, the management of these properties is more intensive and therefore is more critical to the preclusion of loss. Farmland: While the Company has few loans that were originated for the purpose of the acquisition of these commercial properties, loans secured by farmland represent unique risks that are associated with the operation of an agricultural businesses. The valuation of farmland can vary greatly over time based on the property's access to resources including but not limited to water, crop prices, foreign exchange rates, government regulation or restrictions, and the nature of ongoing capital investment needed to maintain the quality of the property. Loans secured by farmland typically represent less risk to the Company than other agriculture loans as the real estate typically provides greater support in the event of default or need for longer term repayment. Consumer loans : SFR 1-4 1st DT Liens: The most significant drivers of potential loss within the Company's residential real estate portfolio relate general, regional, or individual changes in economic conditions and their effect on employment and borrowers cash flow. Risk in this portfolio is best measured by changes in borrower credit score and loan-to-value. Loss estimates are based on the general movement in credit score, economic outlook and its effects on employment and the value of homes and the Bank’s historical loss experience adjusted to reflect the economic outlook and the unemployment rate. SFR HELOCs and Junior Liens: Similar to residential real estate term loans, HELOCs and junior liens performance is also primarily driven by borrower cash flows based on employment status. However, HELOCs carry additional risks associated with the fact that most of these loans are secured by a deed of trust in a position that is junior to the primary lien holder. Furthermore, the risk that as the borrower's financial strength deteriorates, the outstanding balance on these credit lines may increase as they may only be canceled by the Company if certain limited criteria are met. In addition to the allowance for credit losses maintained as a percent of the outstanding loan balance, the Company maintains additional reserves for the unfunded portion of the HELOC. Other: The majority of consumer loans are secured by automobiles, with the remainder primarily unsecured revolving debt (credit cards). These loans are susceptible to three primary risks; non-payment due to income loss, over-extension of credit and, when the borrower is unable to pay, shortfall in collateral value, if any. Typically non-payment is due to loss of job and will follow general economic trends in the marketplace driven primarily by rises in the unemployment rate. Loss of collateral value can be due to market demand shifts, damage to collateral itself or a combination of those factors. Credit card loans are unsecured and while collection efforts are pursued in the event of default, there is typically limited opportunity for recovery. Loss estimates are based on the general movement in credit score, economic outlook and its effects on employment and the Bank’s historical loss experience adjusted to reflect the economic outlook and the unemployment rate. Commercial and Industrial: Repayment of these loans is primarily based on the cash flow of the borrower, and secondarily on the underlying collateral provided by the borrower. A borrower's cash flow may be unpredictable, and collateral securing these loans may fluctuate in value. Most often, collateral includes accounts receivable, inventory, or equipment. Collateral securing these loans may depreciate over time, may be difficult to appraise, may be illiquid and may fluctuate in value based on the success of the business. Actual and forecast changes in gross domestic product are believed to be corollary to losses associated with these credits. Construction : While secured by real estate, construction loans represent a greater level of risk than term real estate loans due to the nature of the additional risks associated with the not only the completion of construction within an estimated time period and budget, but also the need to either sell the building or reach a level of stabilized occupancy sufficient to generate the cash flows necessary to support debt service and operating costs. The Company seeks to mitigate the additional risks associated with construction lending by requiring borrowers to comply with lower loan to value ratios and additional covenants as well as strong tertiary support of guarantors. The loss forecasting model applies the historical rate of loss for similar loans over the expected life of the asset as adjusted for macroeconomic factors. Agriculture Production: Repayment of agricultural loans is dependent upon successful operation of the agricultural business, which is greatly impacted by factors outside the control of the borrower. These factors include adverse weather conditions, including access to water, that may impact crop yields, loss of livestock due to disease or other factors, declines in market prices for agriculture products, changes in foreign exchange, and the impact of government regulations. In addition, many farms are dependent on a limited number of key individuals whose injury or death may significantly affect the successful operation of the business. Consequently, agricultural production loans may involve a greater degree of risk than other types of loans. Leases: The loss forecasting model applies the historical rate of loss for similar loans over the expected life of the asset. Leases typically represent an elevated level of credit risk as compared to loans secured by real estate as the collateral for leases is often subject to a more rapid rate of depreciation or depletion. The ultimate severity of loss is impacted by the type of collateral securing the exposure, the size of the exposure, the borrower’s industry sector, any guarantors and the geographic market. Assumptions of expected loss are conditioned to the economic outlook and the other variables discussed above. Unfunded commitments : The estimated credit losses associated with these unfunded lending commitments is calculated using the same models and methodologies noted above and incorporate utilization assumptions at time of default. The reserve for unfunded commitments is maintained on the consolidated balance sheet in other liabilities. Accounting Standards Adopted in 2021 On January 1, 2021, the Company adopted ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. This ASU simplified the accounting for income taxes by removing certain exceptions to the general principles in Topic 740. The guidance also promoted consistent application and simplification of GAAP for other areas of Topic 740 by clarifying and amending existing guidance. On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security Act (CARES Act) was enacted in response to the Coronavirus Disease 2019 (COVID-19) pandemic. The CARES Act provides optional temporary relief from troubled debt restructuring and impairment accounting requirements for loan modifications related to the COVID-19 pandemic made during the period from March 1, 2020 to the earlier of December 31, 2020 or 60 days after the national emergency concerning COVID-19 declared by the President terminates. The applicable period for this relief was extended through 2021 by way of the Consolidated Appropriations Act. Following the passage of the CARES Act legislation, the "Interagency Statement on Loan Modifications and Reporting for Financial Institutions Working with Customers Affected by the Coronavirus" was issued by federal bank regulators, which similarly offers temporary relief from troubled debt restructuring accounting for loan payment deferrals for certain customers whose businesses are experiencing economic hardship due to Coronavirus. The Interagency Statement requires the modification event to be short-term and COVID-19 related, requiring the borrower be not more than 30 days past due as of the date the modification program was implemented, and allowing Management to apply judgement as when the modification program terminates. The ability to suspend TDR accounting under either program does not apply to any adverse impact on the credit of a borrower that is not related to the COVID-19 pandemic. Accounting Standards Pending Adoption FASB issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting. This ASU provides temporary optional guidance to ease the potential burden in accounting for reference rate reform by providing optional expedients and exceptions for applying generally accepted accounting principles (GAAP) to contracts, hedging

Investment Securities

Investment Securities	6 Months Ended
	Jun. 30, 2021
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities The amortized cost, estimated fair values and allowance for credit losses of investments in debt securities are summarized in the following tables: June 30, 2021 (in thousands) Amortized Gross Gross Allowance for Credit Losses Estimated Debt Securities Available for Sale Obligations of U.S. government agencies $ 1,126,342 $ 11,628 $ (4,554) $ — $ 1,133,416 Obligations of states and political subdivisions 141,168 6,208 (452) — 146,924 Corporate bonds 2,473 83 — — 2,556 Asset backed securities 563,347 2,941 (1,616) — 564,672 Total debt securities available for sale $ 1,833,330 $ 20,860 $ (6,622) $ — $ 1,847,568 Debt Securities Held to Maturity Obligations of U.S. government agencies $ 226,925 $ 10,926 $ — $ — $ 237,851 Obligations of states and political subdivisions 8,853 315 — — 9,168 Total debt securities held to maturity $ 235,778 $ 11,241 $ — $ — $ 247,019 December 31, 2020 (in thousands) Amortized Gross Gross Allowance for Credit Losses Estimated Debt Securities Available for Sale Obligations of U.S. government agencies $ 795,555 $ 17,710 $ (891) $ — $ 812,374 Obligations of states and political subdivisions 123,347 5,748 — — 129,095 Corporate bonds 2,459 85 — — 2,544 Asset backed securities 473,720 1,682 (5,151) — 470,251 Total debt securities available for sale $ 1,395,081 $ 25,225 $ (6,042) $ — $ 1,414,264 Debt Securities Held to Maturity Obligations of U.S. government agencies 273,667 13,774 — $ — 287,441 Obligations of states and political subdivisions 10,896 389 — — 11,285 Total debt securities held to maturity $ 284,563 $ 14,163 $ — $ — $ 298,726 There were no sales of investment securities during the three and six months ended June 30, 2021 and 2020, respectively. Investment securities with an aggregate carrying value of $456,446,000 and $429,049,000 at June 30, 2021 and December 31, 2020, respectively, were pledged as collateral for specific borrowings, lines of credit or local agency deposits. The amortized cost and estimated fair value of debt securities at June 30, 2021 by contractual maturity are shown below. Actual maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. At June 30, 2021, obligations of U.S. government corporations and agencies with a cost basis totaling $1,104,406,000 consist almost entirely of residential real estate mortgage-backed securities whose contractual maturity, or principal repayment, will follow the repayment of the underlying mortgages. For purposes of the following table, the entire outstanding balance of these mortgage-backed securities issued by U.S. government corporations and agencies is categorized based on final maturity date. At June 30, 2021, the Company estimates the average remaining life of these mortgage-backed securities issued by U.S. government corporations and agencies to be approximately 4.21 years. Average remaining life is defined as the time span after which the principal balance has been reduced by half. As of June 30, 2021, the contractual final maturity for available for sale and held to maturity investment securities is as follows: Debt Securities Available for Sale Held to Maturity (in thousands) Amortized Estimated Amortized Estimated Due in one year $ 1,093 $ 1,117 $ — $ — Due after one year through five years 181,624 181,791 1,011 1,125 Due after five years through ten years 337,145 338,985 20,641 21,363 Due after ten years 1,313,468 1,325,675 214,126 224,531 Totals $ 1,833,330 $ 1,847,568 $ 235,778 $ 247,019 Gross unrealized losses on debt securities and the fair value of the related securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, were as follows: June 30, 2021: Less than 12 months 12 months or more Total (in thousands) Fair Unrealized Fair Unrealized Fair Unrealized Debt Securities Available for Sale Obligations of U.S. government agencies $ 566,137 $ (4,554) $ — $ — $ 566,137 $ (4,554) Obligations of states and political subdivisions 24,207 (452) — — 24,207 (452) Asset backed securities 103,518 (394) 152,895 (1,222) 256,413 (1,616) Total debt securities available for sale $ 693,862 $ (5,400) $ 152,895 $ (1,222) $ 846,757 $ (6,622) December 31, 2020: Less than 12 months 12 months or more Total (in thousands) Fair Unrealized Fair Unrealized Fair Unrealized Debt Securities Available for Sale Obligations of U.S. government agencies $ 160,543 $ (891) $ — $ — $ 160,543 $ (891) Asset backed securities 51,544 (441) 297,020 (4,710) 348,564 (5,151) Total debt securities available for sale $ 212,087 $ (1,332) $ 297,020 $ (4,710) $ 509,107 $ (6,042) Obligations of U.S. government agencies: The unrealized losses on investments in obligations of U.S. government agencies are caused by interest rate increases and illiquidity. The contractual cash flows of these securities are guaranteed by U.S. Government Sponsored Entities (principally Fannie Mae and Freddie Mac). It is expected that the securities would not be settled at a price less than the amortized cost of the investment.Because management believes the decline in fair value is attributable to changes in interest rates and not credit quality, and because the Company does not intend to sell and more likely than not will not be required to sell, there is no impairment on these securities and there has been no allowance for credit losses recorded. At June 30, 2021, 32 debt securities representing obligations of U.S. government agencies had unrealized losses with aggregate depreciation of 0.80% from the Company’s amortized cost basis. Obligations of states and political subdivisions: The unrealized losses on investments in obligations of states and political subdivisions were caused by increases in required yields by investors in these types of securities. It is expected that the securities would not be settled at a price less than the amortized cost of the investment. Because management believes the decline in fair value is attributable to changes in interest rates and not credit quality, and because the Company does not intend to sell and more likely than not will not be required to sell, there is no impairment on these securities and there has been no allowance for credit losses recorded as of June 30, 2021. At June 30, 2021, six debt securities representing obligations of states and political subdivisions had unrealized losses with aggregate depreciation of 1.83% from the Company’s amortized cost basis. Asset backed securities: The unrealized losses on investments in asset backed securities were caused by increases in required yields by investors for these types of securities. At the time of purchase, each of these securities was rated AA or AAA and through June 30, 2021 has not experienced any deterioration in credit rating. At June 30, 2021, 18 asset backed securities had unrealized losses with aggregate depreciation of 0.63% from the Company’s amortized cost basis. The Company continues to monitor these securities for changes in credit rating or other indications of credit deterioration. Because management believes the decline in fair value is attributable to changes in interest rates and not credit quality, and because the Company does not intend to sell and more likely than not will not be required to sell, there is no impairment on these securities and there has been no allowance for credit losses recorded as of June 30, 2021. The Company monitors credit quality of debt securities held-to-maturity through the use of credit rating. The Company monitors the credit rating on a monthly basis. The following table summarizes the amortized cost of debt securities held-to-maturity at the dates indicated, aggregated by credit quality indicator: June 30, 2021 December 31, 2020 AAA/AA/A BBB/BB/B AAA/AA/A BBB/BB/B (In thousands) (In thousands) Debt Securities Held to Maturity Obligations of U.S. government agencies $ 226,925 $ — $ 273,667 $ — Obligations of states and political subdivisions 8,853 — 10,896 — Total debt securities held to maturity $ 235,778 $ — $ 284,563 $ —

Loans

Loans	6 Months Ended
	Jun. 30, 2021
Receivables [Abstract]
Loans	Loans A summary of loan balances follows: (in thousands) June 30, 2021 December 31, 2020 Commercial real estate: CRE non-owner occupied $ 1,534,256 $ 1,535,555 CRE owner occupied 659,948 624,375 Multifamily 828,101 639,480 Farmland 172,031 152,492 Total commercial real estate loans 3,194,336 2,951,902 Consumer: SFR 1-4 1st DT liens 654,373 546,592 SFR HELOCs and junior liens 325,127 327,484 Other 71,109 78,032 Total consumer loans 1,050,609 952,108 Commercial and industrial 452,069 526,327 Construction 200,714 284,842 Agriculture production 41,967 44,164 Leases 5,199 3,784 Total loans, net of deferred loan fees and discounts $ 4,944,894 $ 4,763,127 Total principal balance of loans owed, net of charge-offs $ 4,984,824 $ 4,805,596 Unamortized net deferred loan fees (19,843) (16,984) Discounts to principal balance of loans owed, net of charge-offs (20,087) (25,485) Total loans, net of unamortized deferred loan fees and discounts $ 4,944,894 $ 4,763,127 Allowance for credit losses on loans $ (86,062) $ (91,847) As of June 30, 2021, the total gross balance outstanding of PPP loans (included within commercial and industrial) was $248,582,000 as compared to total PPP originations of $640,410,000. In connection with the origination of these loans, the Company earned approximately $25,299,000 in loan fees, offset by deferred loan costs of approximately $1,245,000, the net of which will be recognized over the earlier of loan maturity (between 24-60 months), repayment or receipt of forgiveness confirmation. As of June 30, 2021 there was approximately $8,990,000 in net deferred fee income remaining to be recognized, as compared to $7,212,000 in remaining net deferred fee income as of December 31, 2020. During the three and six months ended June 30, 2021, the Company recognized $2,344,000 and $7,304,000, respectively in fees on PPP loans. During the three and six months ended June 30, 2020, the Company recognized $2,356,000, respectively, in fees on PPP loans.

Allowance for Credit Losses

Allowance for Credit Losses	6 Months Ended
	Jun. 30, 2021
Allowance For Loan And Lease Losses [Abstract]
Allowance for Credit Losses	Allowance for Credit Losses For the periods indicated, the following tables summarize the activity in the allowance for credit losses on loans which is recorded as a contra asset, and the reserve for unfunded commitments which is recorded on the balance sheet within other liabilities: Allowance for credit losses – Three months ended June 30, 2021 (in thousands) Beginning Charge-offs Recoveries Provision (benefit) Ending Commercial real estate: CRE non-owner occupied $ 26,434 $ — $ — $ (406) $ 26,028 CRE owner occupied 9,874 — — 589 10,463 Multifamily 12,371 — — 825 13,196 Farmland 1,724 — — 226 1,950 Total commercial real estate loans 50,403 — — 1,234 51,637 Consumer: SFR 1-4 1st DT liens 10,665 — 1 (37) 10,629 SFR HELOCs and junior liens 11,079 — 512 (890) 10,701 Other 2,860 (86) 59 (213) 2,620 Total consumer loans 24,604 (86) 572 (1,140) 23,950 Commercial and industrial 4,464 (301) 79 269 4,511 Construction 5,476 — — (525) 4,951 Agriculture production 988 — 2 17 1,007 Leases 6 — — — 6 Allowance for credit losses on loans 85,941 (387) 653 (145) 86,062 Reserve for unfunded commitments 3,580 — — (115) 3,465 Total $ 89,521 $ (387) $ 653 $ (260) $ 89,527 Allowance for credit losses – Six months ended June 30, 2021 (in thousands) Beginning Charge-offs Recoveries Provision (benefit) Ending Commercial real estate: CRE non-owner occupied $ 29,380 $ — $ 2 $ (3,354) $ 26,028 CRE owner occupied 10,861 — 1 (399) 10,463 Multifamily 11,472 — — 1,724 13,196 Farmland 1,980 — — (30) 1,950 Total commercial real estate loans 53,693 — 3 (2,059) 51,637 Consumer: SFR 1-4 1st DT liens 10,117 — 11 501 10,629 SFR HELOCs and junior liens 11,771 — 797 (1,867) 10,701 Other 3,260 (279) 165 (526) 2,620 Total consumer loans 25,148 (279) 973 (1,892) 23,950 Commercial and industrial 4,252 (334) 215 378 4,511 Construction 7,540 — — (2,589) 4,951 Agriculture production 1,209 — 22 (224) 1,007 Leases 5 — — 1 6 Allowance for credit losses on loans 91,847 (613) 1,213 (6,385) 86,062 Reserve for unfunded commitments 3,400 — — 65 3,465 Total $ 95,247 $ (613) $ 1,213 $ (6,320) $ 89,527 In determining the allowance for credit losses, accruing loans with similar risk characteristics are generally evaluated collectively. To estimate expected losses the Company generally utilizes historical loss trends and the remaining contractual lives of the loan portfolios to determine estimated credit losses through a reasonable and supportable forecast period. Individual loan credit quality indicators including loan grade and borrower repayment performance have been statistically correlated with historical credit losses and various econometrics, including California unemployment, gross domestic product, and corporate bond yields. Model forecasts may be adjusted for inherent limitations or biases that have been identified through independent validation and back-testing of model performance to actual realized results. The Company utilizes a forecast period of approximately eight quarters and obtains the forecast data from publicly available sources as of the balance sheet date. This forecast data continues to evolve and included significant shifts in the magnitude of changes for both the unemployment and GDP factors leading up to the balance sheet date. Management noted that the majority of economic forecasts utilized in the ACL calculation seem to have rebounded slightly in the current quarter, coinciding with the widespread availability of vaccines, continued easing of occupancy and social distancing restrictions, and continued government stimulus efforts. Management believes that the allowance for credit losses at June 30, 2021 appropriately reflected expected credit losses inherent in the loan portfolio at that date. Allowance for credit losses – Year ended December 31, 2020 (in thousands) Beginning Adoption of CECL Charge-offs Recoveries Provision Ending Balance Commercial real estate: CRE non-owner occupied $ 5,948 $ 6,701 $ — $ 198 $ 16,533 $ 29,380 CRE owner occupied 2,027 2,281 — 28 6,525 10,861 Multifamily 3,352 2,281 — — 5,839 11,472 Farmland 668 585 (182) — 909 1,980 Total commercial real estate loans 11,995 11,848 (182) 226 29,806 53,693 Consumer: SFR 1-4 1st DT liens 2,306 2,675 (13) 416 4,733 10,117 SFR HELOCs and junior liens 6,183 4,638 (116) 304 762 11,771 Other 1,595 971 (670) 347 1,017 3,260 Total consumer loans 10,084 8,284 (799) 1,067 6,512 25,148 Commercial and industrial 4,867 (1,961) (774) 568 1,552 4,252 Construction 3,388 933 — — 3,219 7,540 Agriculture production 261 (179) — 24 1,103 1,209 Leases 21 (12) — — (4) 5 Allowance for credit losses on loans 30,616 18,913 (1,755) 1,885 42,188 91,847 Reserve for unfunded commitments 2,775 — — — 625 3,400 Total $ 33,391 $ 18,913 $ (1,755) $ 1,885 $ 42,813 $ 95,247 On January 1, 2020, the Company adopted ASU 2016-03 Financial Instruments — Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments , which replaces the incurred loss methodology that is referred to as the current expected credit loss (CECL) methodology. The Company recognized an increase in the ACL for loans totaling $18,913,000, including a reclassification of $481,000 from discounts on acquired loans to the allowance for credit losses, as a cumulative effect adjustment from change in accounting policies, with a corresponding decrease in retained earnings, net of $5,449,000 in taxes of $12,983,000. Allowance for credit losses – Three months ended June 30, 2020 (in thousands) Beginning Charge-offs Recoveries Provision Ending Balance Commercial real estate: CRE non-owner occupied $ 18,034 $ — $ 5 $ 8,052 $ 26,091 CRE owner occupied 5,366 — 4 3,340 8,710 Multifamily 5,140 — — 3,441 8,581 Farmland 713 — — 755 1,468 Total commercial real estate loans 29,253 — 9 15,588 44,850 Consumer: SFR 1-4 1st DT liens 5,650 (11) 2 2,374 8,015 SFR HELOCs and junior liens 11,196 (23) 92 843 12,108 Other 2,746 (243) 72 467 3,042 Total consumer loans 19,592 (277) 166 3,684 23,165 Commercial and industrial 3,867 (214) 55 310 4,018 Construction 4,595 — — 2,180 6,775 Agriculture production 593 — — 326 919 Leases 11 — — 1 12 Allowance for credit losses on loans $ 57,911 $ (491) $ 230 $ 22,089 $ 79,739 Reserve for unfunded commitments 2,845 — — 154 2,999 Total $ 60,756 $ (491) $ 230 $ 22,243 $ 82,738 Allowance for credit losses – Six months ended June 30, 2020 (in thousands) Beginning Adoption of CECL Charge-offs Recoveries Provision Ending Balance Commercial real estate: CRE non-owner occupied $ 5,948 $ 6,701 $ — $ 193 $ 13,249 $ 26,091 CRE owner occupied 2,027 2,281 — 9 4,393 8,710 Multifamily 3,352 2,281 — — 2,948 8,581 Farmland 668 585 — — 215 1,468 Total commercial real estate loans 11,995 11,848 — 202 20,805 44,850 Consumer: SFR 1-4 1st DT liens 2,306 2,675 (11) 412 2,633 8,015 SFR HELOCs and junior liens 6,183 4,638 (23) 140 1,170 12,108 Other 1,595 971 (373) 167 682 3,042 Total consumer loans 10,084 8,284 (407) 719 4,485 23,165 Commercial and industrial 4,867 (1,961) (594) 181 1,525 4,018 Construction 3,388 933 — — 2,454 6,775 Agriculture production 261 (179) — 20 817 919 Leases 21 (12) — — 3 12 Allowance for credit losses on loans 30,616 18,913 (1,001) 1,122 30,089 79,739 Reserve for unfunded commitments 2,775 — — — 224 2,999 Total $ 33,391 $ 18,913 $ (1,001) $ 1,122 $ 30,313 $ 82,738 As part of the on-going monitoring of the credit quality of the Company’s loan portfolio, management tracks certain credit quality indicators including, but not limited to, trends relating to (i) the level of criticized and classified loans, (ii) net charge-offs, (iii) non-performing loans, and (iv) delinquency within the portfolio. The Company analyzes loans individually to classify the loans as to credit risk and grading. This analysis is performed annually for all outstanding balances greater than $1,000,000 and non-homogeneous loans, such as commercial real estate loans, unless other indicators, such as delinquency, trigger more frequent evaluation. Loans below the $1,000,000 threshold and homogenous in nature are evaluated as needed for proper grading based on delinquency and borrower credit scores. The Company utilizes a risk grading system to assign a risk grade to each of its loans. Loans are graded on a scale ranging from Pass to Loss. A description of the general characteristics of the risk grades is as follows: • Pass – This grade represents loans ranging from acceptable to very little or no credit risk. These loans typically meet most if not all policy standards in regard to: loan amount as a percentage of collateral value, debt service coverage, profitability, leverage, and working capital. • Special Mention – This grade represents “Other Assets Especially Mentioned” in accordance with regulatory guidelines and includes loans that display some potential weaknesses which, if left unaddressed, may result in deterioration of the repayment prospects for the asset or may inadequately protect the Company’s position in the future. These loans warrant more than normal supervision and attention. • Substandard – This grade represents “Substandard” loans in accordance with regulatory guidelines. Loans within this rating typically exhibit weaknesses that are well defined to the point that repayment is jeopardized. Loss potential is, however, not necessarily evident. The underlying collateral supporting the credit appears to have sufficient value to protect the Company from loss of principal and accrued interest, or the loan has been written down to the point where this is true. There is a definite need for a well-defined workout/rehabilitation program. • Doubtful – This grade represents “Doubtful” loans in accordance with regulatory guidelines. An asset classified as Doubtful has all the weaknesses inherent in a loan classified Substandard with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable. Pending factors include proposed merger, acquisition, or liquidation procedures, capital injection, perfecting liens on additional collateral, and financing plans. • Loss – This grade represents “Loss” loans in accordance with regulatory guidelines. A loan classified as Loss is considered uncollectible and of such little value that its continuance as a bankable asset 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 the loan, even though some recovery may be affected in the future. The portion of the loan that is graded loss should be charged off no later than the end of the quarter in which the loss is identified. Based on the most recent analysis performed, the risk category of loans by class of loans is as follows for the period indicated: Term Loans Amortized Cost Basis by Origination Year – As of June 30, 2021 (in thousands) 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total Commercial real estate: CRE non-owner occupied risk ratings Pass $ 89,643 $ 120,974 $ 206,093 $ 137,384 $ 246,584 $ 596,837 $ 72,393 $ — $ 1,469,908 Special Mention — — 6,191 11,613 3,667 17,202 10,760 — 49,433 Substandard — — — 1,416 568 12,931 — — 14,915 Doubtful/Loss — — — — — — — — — Total CRE non-owner occupied risk ratings $ 89,643 $ 120,974 $ 212,284 $ 150,413 $ 250,819 $ 626,970 $ 83,153 $ — $ 1,534,256 Commercial real estate: CRE owner occupied risk ratings Pass $ 89,094 $ 99,949 $ 68,668 $ 55,048 $ 55,684 $ 248,033 $ 19,755 $ — $ 636,231 Special Mention — — — 288 6,797 8,447 — — 15,532 Substandard — — 1,483 1,262 465 4,975 — — 8,185 Doubtful/Loss — — — — — — — — — Total CRE owner occupied risk ratings $ 89,094 $ 99,949 $ 70,151 $ 56,598 $ 62,946 $ 261,455 $ 19,755 $ — $ 659,948 Commercial real estate: Multifamily risk ratings Pass $ 176,116 $ 86,806 $ 113,996 $ 121,226 $ 91,054 $ 168,088 $ 24,533 $ — $ 781,819 Special Mention — 9,385 — — — 24,669 7,723 — 41,777 Substandard — — 4,334 — — 171 — — 4,505 Doubtful/Loss — — — — — — — — — Total multifamily loans $ 176,116 $ 96,191 $ 118,330 $ 121,226 $ 91,054 $ 192,928 $ 32,256 $ — $ 828,101 Commercial real estate: Farmland risk ratings Pass $ 26,440 $ 18,526 $ 21,676 $ 18,051 $ 8,397 $ 21,476 $ 44,775 $ — $ 159,341 Special Mention — — — — 1,197 3,316 1,775 — 6,288 Substandard — — 3,267 — 590 1,111 1,434 — 6,402 Doubtful/Loss — — — — — — — — — Total farmland loans $ 26,440 $ 18,526 $ 24,943 $ 18,051 $ 10,184 $ 25,903 $ 47,984 $ — $ 172,031 Consumer loans: SFR 1-4 1st DT liens risk ratings Pass $ 173,937 $ 182,911 $ 59,675 $ 39,522 $ 41,506 $ 139,178 $ — $ 4,812 $ 641,541 Special Mention — — 288 1,154 420 2,779 — 977 5,618 Substandard — — — 1,131 273 5,440 — 370 7,214 Doubtful/Loss — — — — — — — — — Total SFR 1st DT liens $ 173,937 $ 182,911 $ 59,963 $ 41,807 $ 42,199 $ 147,397 $ — $ 6,159 $ 654,373 Term Loans Amortized Cost Basis by Origination Year – As of June 30, 2021 (in thousands) 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total Consumer loans: SFR HELOCs and Junior Liens Pass $ 624 $ — $ — $ — $ — $ 242 $ 300,548 $ 11,338 $ 312,752 Special Mention — — — — — 92 4,386 884 5,362 Substandard — — — — — 17 5,460 1,536 7,013 Doubtful/Loss — — — — — — — — — Total SFR HELOCs and Junior Liens $ 624 $ — $ — $ — $ — $ 351 $ 310,394 $ 13,758 $ 325,127 Consumer loans: Other risk ratings Pass $ 12,077 $ 19,995 $ 22,680 $ 10,425 $ 2,749 $ 1,367 $ 576 $ — $ 69,869 Special Mention — 52 211 243 98 67 72 — 743 Substandard — 67 88 126 73 132 11 — 497 Doubtful/Loss — — — — — — — — — Total other consumer loans $ 12,077 $ 20,114 $ 22,979 $ 10,794 $ 2,920 $ 1,566 $ 659 $ — $ 71,109 Commercial and industrial loans: Commercial and industrial risk ratings Pass $ 202,893 $ 73,077 $ 40,966 $ 14,631 $ 9,585 $ 9,484 $ 94,260 $ 840 $ 445,736 Special Mention — 29 119 550 116 161 429 — 1,404 Substandard — — 166 102 1,011 684 2,887 79 4,929 Doubtful/Loss — — — — — — — — — Total commercial and industrial loans $ 202,893 $ 73,106 $ 41,251 $ 15,283 $ 10,712 $ 10,329 $ 97,576 $ 919 $ 452,069 Construction loans: Construction risk ratings Pass $ 17,725 $ 88,892 $ 51,436 $ 10,722 $ 2,092 $ 23,539 $ 1 $ — $ 194,407 Special Mention — — — — 346 1,460 — — 1,806 Substandard — — — — — 4,501 — — 4,501 Doubtful/Loss — — — — — — — — — Total construction loans $ 17,725 $ 88,892 $ 51,436 $ 10,722 $ 2,438 $ 29,500 $ 1 $ — $ 200,714 Agriculture production loans: Agriculture production risk ratings Pass $ 1,241 $ 1,012 $ 1,767 $ 1,189 $ 1,229 $ 1,006 $ 32,132 $ — $ 39,576 Special Mention — — — 181 — 74 2,016 — 2,271 Substandard — — — — — — 120 — 120 Doubtful/Loss — — — — — — — — — Total agriculture production loans $ 1,241 $ 1,012 $ 1,767 $ 1,370 $ 1,229 $ 1,080 $ 34,268 $ — $ 41,967 Term Loans Amortized Cost Basis by Origination Year – As of June 30, 2021 (in thousands) 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total Leases: Lease risk ratings Pass $ 5,199 $ — $ — $ — $ — $ — $ — $ — $5,199 Special Mention — — — — — — — — — Substandard — — — — — — — — — Doubtful/Loss — — — — — — — — — Total leases $ 5,199 $ — $ — $ — $ — $ — $ — $ — $ 5,199 Total loans outstanding: Risk ratings Pass $ 794,989 $ 692,142 $ 586,957 $ 408,198 $ 458,880 $ 1,209,250 $ 588,973 $ 16,990 $ 4,756,379 Special Mention — 9,466 6,809 14,029 12,641 58,267 27,161 1,861 130,234 Substandard — 67 9,338 4,037 2,980 29,962 9,912 1,985 58,281 Doubtful/Loss — — — — — — — — — Total loans outstanding $ 794,989 $ 701,675 $ 603,104 $ 426,264 $ 474,501 $ 1,297,479 $ 626,046 $ 20,836 $ 4,944,894 Term Loans Amortized Cost Basis by Origination Year – As of December 31, 2020 (in thousands) 2020 2019 2018 2017 2016 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total Commercial real estate: CRE non-owner occupied risk ratings Pass $ 120,520 $ 207,899 $ 155,730 $ 256,677 $ 179,523 $ 460,644 $ 76,730 $ — $ 1,457,723 Special Mention — 7,455 11,692 5,407 15,773 18,832 12,205 — 71,364 Substandard — — 1,449 584 2,147 2,288 — — 6,468 Doubtful/Loss — — — — — — — — — Total CRE non-owner occupied risk ratings $ 120,520 $ 215,354 $ 168,871 $ 262,668 $ 197,443 $ 481,764 $ 88,935 $ — $ 1,535,555 Commercial real estate: CRE owner occupied risk ratings Pass $ 105,896 $ 75,144 $ 53,816 $ 58,371 $ 54,541 $ 227,828 $ 25,508 $ — $ 601,104 Special Mention — — 288 7,451 2,955 6,140 — — 16,834 Substandard — 1,533 1,301 475 1,306 1,822 — — 6,437 Doubtful/Loss — — — — — — — — — Total CRE owner occupied risk ratings $ 105,896 $ 76,677 $ 55,405 $ 66,297 $ 58,802 $ 235,790 $ 25,508 $ — $ 624,375 Commercial real estate: Multifamily risk ratings Pass $ 77,646 $ 118,725 $ 113,882 $ 70,112 $ 67,457 $ 123,518 $ 19,007 $ — $ 590,347 Special Mention 9,441 — — 603 24,687 772 9,259 — 44,762 Substandard — 4,371 — — — — — — — 4,371 Doubtful/Loss — — — — — — — — — Total multifamily loans $ 87,087 $ 123,096 $ 113,882 $ 70,715 $ 92,144 $ 124,290 $ 28,266 $ — $ 639,480 Term Loans Amortized Cost Basis by Origination Year – As of December 31, 2020 (in thousands) 2020 2019 2018 2017 2016 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total Commercial real estate: Farmland risk ratings Pass $ 17,640 $ 25,003 $ 19,148 $ 12,834 $ 7,377 $ 17,129 $ 39,411 $ — $ 138,542 Special Mention — 2,567 — 1,271 227 3,107 2,258 — 9,430 Substandard — 700 — 602 — 1,214 2,004 — 4,520 Doubtful/Loss — — — — — — — — — Total farmland loans $ 17,640 $ 28,270 $ 19,148 $ 14,707 $ 7,604 $ 21,450 $ 43,673 $ — $ 152,492 Consumer loans: SFR 1-4 1st DT liens risk ratings Pass $ 183,719 $ 80,717 $ 36,342 $ 53,001 $ 46,467 $ 126,465 $ 76 $ 5,507 $ 532,294 Special Mention — 290 684 110 15 2,936 — 934 4,969 Substandard — — 1,174 929 935 5,763 — 528 9,329 Doubtful/Loss — — — — — — — — — Total SFR 1st DT liens $ 183,719 $ 81,007 $ 38,200 $ 54,040 $ 47,417 $ 135,164 $ 76 $ 6,969 $ 546,592 Consumer loans: SFR HELOCs and Junior Liens Pass $ 793 $ — $ 13 $ 360 $ 300 $ 910 $ 297,160 $ 14,051 $ 313,587 Special Mention — — 16 — — 83 4,504 789 5,392 Substandard — — — — — 39 6,698 1,768 8,505 Doubtful/Loss — — — — — — — — — Total SFR HELOCs and Junior Liens $ 793 $ — $ 29 $ 360 $ 300 $ 1,032 $ 308,362 $ 16,608 $ 327,484 Consumer loans: Other risk ratings Pass $ 25,876 $ 29,539 $ 14,170 $ 4,238 $ 1,020 $ 967 $ 986 $ — $ 76,796 Special Mention 43 208 147 74 24 65 90 — 651 Substandard 58 82 210 74 12 140 9 — 585 Doubtful/Loss — — — — — — — — — Total other consumer loans $ 25,977 $ 29,829 $ 14,527 $ 4,386 $ 1,056 $ 1,172 $ 1,085 $ — $ 78,032 Commercial and industrial loans: Commercial and industrial risk ratings Pass $ 356,701 $ 48,838 $ 20,463 $ 13,151 $ 5,185 $ 9,490 $ 65,938 $ 1,085 $ 520,851 Special Mention — 102 698 195 20 178 207 11 1,411 Substandard — 301 53 1,142 823 148 1,519 79 4,065 Doubtful/Loss — — — — — — — — — Total commercial and industrial loans $ 356,701 $ 49,241 $ 21,214 $ 14,488 $ 6,028 $ 9,816 $ 67,664 $ 1,175 $ 526,327 Term Loans Amortized Cost Basis by Origination Year – As of December 31, 2020 (in thousands) 2020 2019 2018 2017 2016 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total Construction loans: Construction risk ratings Pass 69,133 41,786 92,191 51,082 20,868 2,876 — $ — $ 277,936 Special Mention — — — 346 — 1,780 — — 2,126 Substandard — — — — 4,529 251 — — 4,780 Doubtful/Loss — — — — — — — — — Total construction loans $ 69,133 $ 41,786 $ 92,191 $ 51,428 $ 25,397 $ 4,907 $ — $ — $ 284,842 Agriculture production loans: Agriculture production risk ratings Pass $ 977 $ 2,079 $ 1,590 $ 1,838 $ 663 $ 708 $ 36,051 $ — $ 43,906 Special Mention — — 203 — 49 — — — 252 Substandard — — — — 6 — — — 6 Doubtful/Loss — — — — — — — — — Total agriculture production loans $ 977 $ 2,079 $ 1,793 $ 1,838 $ 718 $ 708 $ 36,051 $ — $ 44,164 Leases: Lease risk ratings Pass $ 3,784 $ — $ — $ — $ — $ — $ — $ — $ 3,784 Special Mention — — — — — — — — — Substandard — — — — — — — — — Doubtful/Loss — — — — — — — — — Total leases $ 3,784 $ — $ — $ — $ — $ — $ — $ — $ 3,784 Total loans outstanding: Risk ratings Pass $ 962,685 $ 629,730 $ 507,345 $ 521,664 $ 383,401 $ 970,535 $ 560,867 $ 20,643 $ 4,556,870 Special Mention 9,484 10,622 13,728 15,457 43,750 33,893 28,523 1,734 157,191 Substandard 58 6,987 4,187 3,806 9,758 11,665 10,230 2,375 49,066 Doubtful/Loss — — — — — — — — — Total loans outstanding $ 972,227 $ 647,339 $ 525,260 $ 540,927 $ 436,909 $ 1,016,093 $ 599,620 $ 24,752 $ 4,763,127 The following table shows the ending balance of current and past due originated loans by loan category as of the date indicated: Analysis of Past Due Loans - As of June 30, 2021 (in thousands) 30-59 days 60-89 days > 90 days Total Past Current Total Commercial real estate: CRE non-owner occupied $ 337 $ 49 $ 3,919 $ 4,305 $ 1,529,951 $ 1,534,256 CRE owner occupied 28 62 412 502 659,446 659,948 Multifamily — — — — 828,101 828,101 Farmland — — 846 846 171,185 172,031 Total commercial real estate loans 365 111 5,177 5,653 3,188,683 3,194,336 Consumer: SFR 1-4 1st DT liens — — 423 423 653,950 654,373 SFR HELOCs and junior liens 694 63 1,565 2,322 322,805 325,127 Other 13 — 52 65 71,044 71,109 Total consumer loans 707 63 2,040 2,810 1,047,799 1,050,609 Commercial and industrial 250 178 160 588 451,481 452,069 Construction — — — — 200,714 200,714 Agriculture production 241 — — 241 41,726 41,967 Leases — — — — 5,199 5,199 Total $ 1,563 $ 352 $ 7,377 $ 9,292 $ 4,935,602 $ 4,944,894 Analysis of Past Due Loans - As of December 31, 2020 (in thousands) 30-59 days 60-89 days > 90 days Total Past Current Total Commercial real estate: CRE non-owner occupied $ 127 $ 173 $ 239 $ 539 $ 1,535,016 $ 1,535,555 CRE owner occupied 297 824 1,121 623,254 624,375 Multifamily — — — — 639,480 639,480 Farmland 899 — 70 969 151,523 152,492 Total commercial real estate loans 1,323 173 1,133 2,629 2,949,273 2,951,902 Consumer: SFR 1-4 1st DT liens 37 — 960 997 545,595 546,592 SFR HELOCs and junior liens 418 212 1,671 2,301 325,183 327,484 Other 41 13 100 154 77,878 78,032 Total consumer loans 496 225 2,731 3,452 948,656 952,108 Commercial and industrial 155 426 105 686 525,641 526,327 Construction — — — — 284,842 284,842 Agriculture production — — — — 44,164 44,164 Leases — — — — 3,784 3,784 Total $ 1,974 $ 824 $ 3,969 $ 6,767 $ 4,756,360 $ 4,763,127 The following table shows the ending balance of non accrual loans by loan category as of the date indicated: Non Accrual Loans As of June 30, 2021 As of December 31, 2020 (in thousands) Non accrual with no allowance for credit losses Total non accrual Past due 90 days or more and still accruing Non accrual with no allowance for credit losses Total non accrual Past due 90 days or more and still accruing Commercial real estate: CRE non-owner occupied $ 8,515 $ 8,515 $ — $ 3,110 $ 3,110 $ — CRE owner occupied 3,132 5,610 — 3,111 4,061 — Multifamily 171 171 — — — — Farmland 1,346 1,346 — 1,468 1,538 — Total commercial real estate loans 13,164 15,642 — 7,689 8,709 — Consumer: SFR 1-4 1st DT liens 4,185 4,328 — 4,950 5,093 — SFR HELOCs and junior liens 3,677 4,604 — 4,480 6,148 — Other 47 114 — 68 167 — Total consumer loans 7,909 9,046 — 9,498 11,408 — Commercial and industrial 86 3,615 — 652 2,183 — Construction 4,402 4,402 — 4,546 4,546 — Agriculture production — — — 5 18 — Leases — — — — — — Sub-total 25,561 32,705 — 22,390 26,864 — Less: Guaranteed loans (608) (865) — (687) (811) Total, net $ 24,953 $ 31,840 $ — $ 21,703 $ 26,053 $ — Interest income on non accrual loans that would have been recognized during the three months ended June 30, 2021 and 2020, if all such loans had been current in accordance with their original terms, totaled $524,000 and $428,000, respectively. Interest income actually recognized on these originated loans during the three months ended June 30, 2021 and 2020 was $159,000 and $39,000, respectively. Interest income on non accrual loans that would have been recognized during the six months ended June 30, 2021 and 2020, if all such loans had been current in accordance with their original terms, totaled $1,060,000 and $859,000, respectively. Interest income actually recognized on these originated loans during the six months ended June 30, 2021 and 2020 was $176,000 and $86,000, respectively. The following tables present the amortized cost basis of collateral dependent loans by class of loans as of the following periods: As of June 30, 2021 (in thousands) Retail Office Warehouse Other Multifamily Farmland SFR -1st Deed SFR -2nd Deed Automobile/Truck A/R and Inventory Equipment Total Commercial real estate: CRE non-owner occupied $ 2,853 $ 416 $ — $ 3,918 $ — $ — $ 1,328 $ — $ — $ — $ — $ 8,515 CRE owner occupied 543 — 1,611 978 — — — — — — — 3,132 Multifamily — — — — 171 — — — — — — 171 Farmland — — — — — 1,346 — — — — — 1,346 Total commercial real estate loans 3,396 416 1,611 4,896 171 1,346 1,328 — — — — 13,164 Consumer: SFR 1-4 1st DT liens — — — — — — 4,185 — — — — 4,185 SFR HELOCs and junior liens — — — — — — 1,753 1,924 — — — 3,677 Other — — — 26 — — — — 21 — — 47 Total consumer loans — — — 26 — — 5,938 1,924 21 — — 7,909 Commercial and industrial — — — — — — — — — 43 43 86 Construction — — — — — — 4,402 — — — — 4,402 Agriculture production — — — — — — — — — — — — Leases — — — — — — — — — — — — Total $ 3,396 $ 416 $ 1,611 $ 4,922 $ 171 $ 1,346 $ 11,668 $ 1,924 $ 21 $ 43 $ 43 $ 25,561 As of December 31, 2020 (in thousands) Retail Office Warehouse Other Multifamily Farmland SFR -1st Deed SFR -2nd Deed Automobile/Truck A/R and Inventory Equipment Total Commercial real estate: CRE non-owner occupied $ 2,445 $ 435 $ — $ — $ — $ — $ — $ — $ — $ — $ — $ 2,880 CRE owner occupied 796 1,176 1,668 — — — — — — — — 3,640 Multifamily — — — — — — — — — — — — Farmland — — — — — — 1,538 — — — — — 1,538 Total commercial real estate loans 3,241 1,611 1,668 — — 1,538 — — — — — 8,058 Consumer: SFR 1-4 1st DT liens — — — — — — 5,068 — — — — 5,068 SFR HELOCs and junior liens — — — — — — 1,855 2,839 — — — 4,694 Other — — — 42 — — — — 97 — — 139 Total consumer loans — — — 42 — — 6,923 2,839 97 — — 9,901 Commercial and industrial — — — 292 — — — — — 1,173 75 1,540 Construction — — — — — — 4,546 — — — — 4,546 Agriculture production — — — — — — — — — 13 5 18 Leases — — — — — — — — — — — — Total $ 3,241 $ 1,611 $ 1,668 $ 334 $ — $ 1,538 $ 11,469 $ 2,839 $ 97 $ 1,186 $ 80 $ 24,063 TDR information for the three months ended June 30, 2021 (dollars in thousands) Number Pre-mod Post-mod Financial Number that Recorded Financial impact Commercial real estate: CRE non-owner occupied 1 $ 706 $ 706 $ 706 — $ — $ — CRE owner occupied — — — — — — — Multifamily — — — — — — — Farmland — — — — — — — Total commercial real estate loans 1 706 706 706 — — — Consumer: SFR 1-4 1st DT liens — — — — — — — SFR HELOCs and junior liens — — — — — — — Other — — — — — — — Total consumer loans — — — — — — — Commercial and industrial 2 2,000 2,000 293 — — — Construction — — — — — — — Agriculture production — — — — — — — Leases — — — — — — — Total 3 $ 2,706 $ 2,706 $ 999 — $ — $ — TDR information for the three months ended June 30, 2020 (dollars in thousands) Number Pre-mod Post-mod Financial Number that Recorded Financial impact Commercial real estate: CRE non-owner occupied — $ — $ — $ — — $ — $ — CRE owner occupied — — — — — — — Multifamily — — — — — — — Farmland — — — — — — — Total commercial real estate loans — — — — — — — Consumer: SFR 1-4 1st DT liens — — — — 1 735 — SFR HELOCs and junior liens — — — — — — — Other — — — — — — — Total consumer loans — — — — 1 735 — Commercial and industrial — — — — — — — Construction — — — — — — — Agriculture production — — — — — — — Leases — — — — — — — Total — $ — $ — $ — 1 $ 735 $ — TDR Information for the six months ended June 30, 2021 (dollars in thousands) Number Pre-mod Post-mod Financial Number that Recorded Financial impact Commercial real estate: CRE non-owner occupied 2 $ 1,023 $ 1,018 $ 1,020 — $ — $ — CRE owner occupied 1 740 742 742 — — — Multifamily — — — — — — — Farmland — — — — 3 847 — Total commercial real estate loans 3 1,763 1,760 1,762 3 847 — Consumer: SFR 1-4 1st DT liens — — — — — — — SFR HELOCs and junior liens — — — — — — — Other — — — — — — — Total consumer loans — — — — — — — Commercial and industrial 5 2,316 2,310 603 1 247 — Construction — — — — — — — Agriculture production — — — — — — — Leases — — — — — — — Total 8 $ 4,079 $ 4,070 $ 2,365 4 $ 1,094 $ — TDR Information for the six months ended June 30, 2020 (dollars in thousands) Number Pre-mod Post-mod Financial Number that Recorded Financial impact Commercial real estate: CRE non-owner occupied 1 $ 257 $ 251 $ — — $ — $ — CRE owner occupied — — — — — — — Multifamily — — — — — — — Farmland 2 230 298 — — — — Total commercial real estate loans 3 487 549 — — — — Consumer: SFR 1-4 1st DT liens — — — — 2 1,037 — SFR HELOCs and junior liens 2 172 169 — — — — Other — — — — — — — Total consumer loans 2 172 169 — 2 1,037 — Commercial and industrial 1 21 20 21 — — — Construction — — — — — — — Agriculture production — — — — — — — Leases — — — — — — — Total 6 $ 680 $ 738 $ 21 2 $ 1,037 $ — The Company also modified the terms of select loans in an effort to assist borrowers that were not related to the COVID-19 pandemic. If the borrower was experiencing financial difficulty and a concession was granted, the Company considered such modifications as troubled debt restructurings. Modifications classified as TDRs can include one or a combination of the following: rate modifications, term extensions, interest only modifications, either temporary or long-term, payment modifications, and collateral substitutions/additions. The objective of the modifications was to increase loan repayments by customers and thereby reduce net charge-offs. The modified loans are included in impaired loans for purposes of determining the level of the allowance for credit losses. For all new TDRs, an impairment analysis is conducted. If the loan is determined to be collateral dependent, any additional amount of impairment will be calculated based on the difference between estimated collectible value and the current carrying balance of the loan. This difference could result in an increased provision and is typically charged off. If the asset is determined not to be collateral dependent, the impairment is measured on the net present value difference between the expected cash flows of the restructured loan and the cash flows which would have been received under the original terms. The effect of this could result in a requirement for additional provision to the

Leases

Leases	6 Months Ended
	Jun. 30, 2021
Leases [Abstract]
Leases	Leases The Company records a right-of-use asset (“ROUA”) on the consolidated balance sheets for those leases that convey rights to control use of identified assets for a period of time in exchange for consideration. The Company also records a lease liability on the consolidated balance sheets for the present value of future payment commitments. All of the Company’s leases are comprised of operating leases in which the Company is lessee of real estate property for branches, ATM locations, and general administration and operations. The Company has elected not to include short-term leases (i.e. leases with initial terms of 12 month or less) within the ROUA and lease liability. Known or determinable adjustments to the required minimum future lease payments were included in the calculation of the Company’s ROUA and lease liability. Adjustments to the required minimum future lease payments that are variable and will not be determinable until a future period, such as changes in the consumer price index, are included as variable lease costs. Additionally, expected variable payments for common area maintenance, taxes and insurance were unknown and not determinable at lease commencement and therefore, were not included in the determination of the Company’s ROUA or lease liability. The value of the ROUA and lease liability is impacted by the amount of the periodic payment required, length of the lease term, and the discount rate used to calculate the present value of the minimum lease payments. The Company’s lease agreements often include one or more options to renew at the Company’s discretion. If at lease inception, the Company considers the exercising of a renewal option to be reasonably certain, the Company will include the extended term in the calculation of the ROU asset and lease liability. Topic 842 requires the use of the rate implicit in the lease whenever this rate is readily determinable. As this rate is rarely determinable, the Company utilizes its incremental borrowing rate at lease inception, on a collateralized basis, over a similar term. The lease liability is reduced based on the discounted present value of remaining payments as of each reporting period. The ROUA value is measured using the amount of lease liability and adjusted for prepaid or accrued lease payments, remaining lease incentives, unamortized direct costs (if any), and impairment (if any). The following table presents the components of lease expense for the periods ended: Three months ended June 30, Six months ended June 30, (in thousands) 2021 2020 2021 2020 Operating lease cost $ 1,267 $ 1,291 $ 2,526 $ 2,586 Short-term lease cost 61 65 122 128 Variable lease cost (1) 1 (3) 6 Sublease income (11) (35) (24) (69) Total lease cost $ 1,316 $ 1,322 $ 2,621 $ 2,651 The following table presents supplemental cash flow information related to leases for the periods ended: Three months ended June 30, Six months ended June 30, (in thousands) 2021 2020 2021 2020 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows for operating leases $ 1,226 $ 1,243 $ 2,430 $ 2,480 ROUA obtained in exchange for operating lease liabilities $ — $ 675 $ 1,308 $ 4,068 The following table presents the weighted average operating lease term and discount rate as of the period ended: June 30, 2021 2020 Weighted-average remaining lease term (years) 9.8 10.3 Weighted-average discount rate 3.03 % 3.17 % At June 30, 2021, future expected operating lease payments are as follows: (in thousands) Periods ending December 31, 2021 $ 2,252 2022 4,295 2023 3,624 2024 3,352 2025 2,891 Thereafter 14,925 31,339 Discount for present value of expected cash flows (4,632) Lease liability at June 30, 2021 $ 26,707

Deposits

Deposits	6 Months Ended
	Jun. 30, 2021
Deposits [Abstract]
Deposits	Deposits A summary of the balances of deposits follows: (in thousands) June 30, December 31, Noninterest-bearing demand $ 2,843,783 $ 2,581,517 Interest-bearing demand 1,486,321 1,414,908 Savings 2,337,557 2,164,942 Time certificates, $250,000 or more 59,589 73,147 Other time certificates 264,803 271,420 Total deposits $ 6,992,053 $ 6,505,934 Certificate of deposit balances of $10,000,000 from the State of California were included in time certificates, over $250,000, at June 30, 2021 and December 31, 2020, respectively. The Company participates in a deposit program offered by the State of California whereby the State may make deposits at the Company’s request subject to collateral and credit worthiness constraints. The negotiated rates on these State deposits are generally more favorable than other wholesale funding sources available to the Company. Overdrawn deposit balances of $916,000 and $985,000 were classified as consumer loans at June 30, 2021 and December 31, 2020, respectively.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies The following table presents a summary of the Bank’s commitments and contingent liabilities: (in thousands) June 30, December 31, Financial instruments whose amounts represent risk: Commitments to extend credit: Commercial loans $ 426,278 $ 462,422 Consumer loans 566,332 534,223 Real estate mortgage loans 274,339 202,306 Real estate construction loans 207,741 227,876 Standby letters of credit 14,112 15,056 Deposit account overdraft privilege 112,993 110,813

Shareholders' Equity

Shareholders' Equity	6 Months Ended
	Jun. 30, 2021
Equity [Abstract]
Shareholders' Equity	Shareholders’ Equity Dividends Paid The Bank paid to the Company cash dividends in the aggregate amounts of $8,367,000 and $12,694,000 during the three months ended June 30, 2021 and 2020, respectively, and $16,139,000 and $39,448,000 during the six months ended June 30, 2021 and 2020, respectively. The Bank is regulated by the Federal Deposit Insurance Corporation (FDIC) and the State Department of Financial Protection and Innovation (DFPI). Absent approval from the Commissioner of the DFPI, California banking laws generally limit the Bank’s ability to pay dividends to the lesser of (1) retained earnings or (2) net income for the last three fiscal years, less cash distributions paid during such period. Stock Repurchase Plan On February 25, 2021 the Board of Directors approved the authorization to repurchase up to 2,000,000 shares of the Company's common stock (the 2021 Repurchase Plan), which approximated 6.7% of the shares outstanding as of the approval date. The actual timing of any share repurchases will be determined by the Company's management and therefore the total value of the shares to be purchased under the program is subject to change. The 2021 Repurchase Plan has no expiration date (in accordance with applicable laws and regulations) and during the three and six month periods June 30, 2021, the Company repurchased 45,354 shares with a market value of $2,101,000, respectively. In connection with approval of the 2021 Repurchase Plan, the Company’s previous repurchase program adopted on November 12, 2019 (the 2019 Repurchase Plan) was terminated. Under the 2019 Repurchase Plan, during the three months ended March 31, 2021, the Company repurchased 223 shares with a market value of approximately $8,000. The Company repurchased 858,717 shares during 2020. Stock Repurchased Under Equity Compensation Plans The Company's shareholder-approved equity compensation plans permit employees to tender recently vested shares in lieu of cash for the payment of exercise price, if applicable, and the tax withholding on such shares. During the three months ended June 30, 2021 and 2020, employees tendered zero shares, respectively, of the Company’s common stock in connection with option exercises. During the six months ended June 30, 2021 and 2020, employees tendered zero and 4,668 shares, respectively, of the Company’s common stock in connection with option exercises. Employees also tendered 9,660 and 11,306 shares in connection with the tax withholding requirements of other share based awards during the three months ended June 30, 2021 and 2020, respectively, and 9,730 and 11,439 during the six months ended June 30, 2021 and 2020, respectively. In total, shares of the Company's common stock tendered had market values of $450,000 and $346,000 during the quarters ended June 30, 2021 and 2020, respectively, and $452,000 and $494,000 during the year to date periods June 30, 2021 and 2020, respectively. The tendered shares were retired. The market value of tendered shares is the last market trade price at closing on the day an option is exercised or the other share based award vests. Stock repurchased under equity incentive plans are not included in the total of stock repurchased under the 2021 or 2019 Stock Repurchase Plans.

Stock Options and Other Equity-

Stock Options and Other Equity-Based Incentive Instruments	6 Months Ended
	Jun. 30, 2021
Share-based Payment Arrangement [Abstract]
Stock Options and Other Equity-Based Incentive Instruments	Stock Options and Other Equity-Based Incentive Instruments On April 16, 2019, the Board of Directors adopted the 2019 Equity Incentive Plan (2019 Plan) which was approved by shareholders on May 21, 2019. The 2019 Plan allows for up to 1,500,000 shares to be issued in connection with equity-based incentives. The Company’s 2009 Equity Incentive Plan (2009 Plan) expired on March 26, 2019. While no new awards can be granted under the 2009 Plan, existing grants continue to be governed by the terms, conditions and procedures set forth in any applicable award agreement. Stock option activity during the six months ended June 30, 2021 is summarized in the following table: Number Weighted Outstanding at December 31, 2020 128,500 $ 17.72 Options granted — — Options exercised (1,675) 16.59 Options forfeited — — Outstanding at June 30, 2021 126,825 $ 17.74 The following table shows the number, weighted-average exercise price, intrinsic value, and weighted average remaining contractual life of options exercisable, options not yet exercisable and total options outstanding as of June 30, 2021: Currently Currently Not Total Number of options 126,825 — 126,825 Weighted average exercise price $ 17.74 $ — $ 17.74 Intrinsic value (in thousands) $ 3,763 $ — $ 3,763 Weighted average remaining contractual term (yrs.) 1.5 0.0 1.5 As of June 30, 2021 all options outstanding are fully vested and are expected to be exercised prior to expiration. The Company did not modify any option grants during 2020 or the six months ended June 30, 2021. Activity related to restricted stock unit awards during the six months ended June 30, 2021 is summarized in the following table: Service Market Plus Outstanding at December 31, 2020 99,809 81,615 RSUs granted 47,029 31,479 RSUs added through dividend and performance credits 1,090 — RSUs released (42,712) — RSUs forfeited/expired (114) (75) Outstanding at June 30, 2021 105,102 113,019 The 105,102 of service condition vesting RSUs outstanding as of June 30, 2021 include a feature whereby each RSU outstanding is credited with a dividend amount equal to any common stock cash dividend declared and paid, and the credited amount is divided by the closing price of the Company’s stock on the dividend payable date to arrive at an additional amount of RSUs outstanding under the original grant. The dividend credits follow the same vesting requirements as the RSU awards and are not considered participating securities. The 105,102 of service condition vesting RSUs outstanding as of June 30, 2021 are expected to vest, and be released, on a weighted-average basis, over the next 2.7 years. The Company expects to recognize $3,894,000 of pre-tax compensation costs related to these service condition vesting RSUs between June 30, 2021 and their vesting dates. The Company did not modify any service condition vesting RSUs during 2020 or during the six months ended June 30, 2021. The 113,019 of market plus service condition vesting RSUs outstanding as of June 30, 2021 are expected to vest, and be released, on a weighted-average basis, over the next 2.4 years. The Company expects to recognize $2,106,000 of pre-tax compensation costs related to these RSUs between June 30, 2021 and their vesting dates. As of June 30, 2021, the number of market plus service condition vesting RSUs outstanding that will actually vest, and be released, may be reduced to zero or increased to 169,529 depending on the total return of the Company’s common stock versus the total return of an index of bank stocks from the grant date to the vesting date. The Company did not modify any market plus service condition vesting RSUs during 2020 or during the six months ended June 30, 2021.

Non-interest Income and Expense

Non-interest Income and Expense	6 Months Ended
	Jun. 30, 2021
Other Income and Expenses [Abstract]
Non-interest Income and Expense	Non-interest Income and Expense The following table summarizes the Company’s non-interest income for the periods indicated: Three months ended Six months ended (in thousands) 2021 2020 2021 2020 ATM and interchange fees $ 6,558 $ 5,165 $ 12,419 $ 10,276 Service charges on deposit accounts 3,462 3,046 6,731 7,092 Other service fees 914 734 1,785 1,492 Mortgage banking service fees 467 459 930 928 Change in value of mortgage servicing rights (471) (1,236) (459) (2,494) Total service charges and fees 10,930 8,168 21,406 17,294 Increase in cash value of life insurance 745 710 1,418 1,430 Asset management and commission income 947 661 1,781 1,577 Gain on sale of loans 2,847 1,736 6,094 2,627 Lease brokerage income 249 127 359 320 Sale of customer checks 116 88 235 212 Gain on sale of investment securities — — — — Gain (loss) on marketable equity securities 8 25 (45) 72 Other 115 142 819 (55) Total other non-interest income 5,027 3,489 10,661 6,183 Total non-interest income $ 15,957 $ 11,657 $ 32,067 $ 23,477 The components of non-interest expense were as follows: Three months ended Six months ended (in thousands) 2021 2020 2021 2020 Base salaries, net of deferred loan origination costs $ 17,537 $ 17,277 $ 33,048 $ 34,900 Incentive compensation 4,322 2,395 7,902 5,496 Benefits and other compensation costs 5,222 7,383 11,461 13,931 Total salaries and benefits expense 27,081 27,055 52,411 54,327 Occupancy 3,700 3,398 7,426 7,273 Data processing and software 3,201 3,657 6,403 7,024 Equipment 1,207 1,350 2,724 2,862 Intangible amortization 1,431 1,431 2,862 2,862 Advertising 734 531 1,114 1,196 ATM and POS network charges 1,551 1,210 2,797 2,583 Professional fees 1,046 741 1,640 1,444 Telecommunications 564 639 1,145 1,364 Regulatory assessments and insurance 618 360 1,230 455 Postage 124 283 322 573 Operational losses 212 184 421 405 Courier service 288 337 582 668 Gain on sale or acquisition of foreclosed assets (15) (16) (66) (57) (Gain) loss on disposal of fixed assets (426) 15 (426) 15 Other miscellaneous expense 2,855 4,375 5,204 7,306 Total other non-interest expense 17,090 18,495 33,378 35,973 Total non-interest expense $ 44,171 $ 45,550 $ 85,789 $ 90,300

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2021
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share Basic earnings per share represent income available to common shareholders divided by the weighted-average number of common shares outstanding during the period. Diluted earnings per share reflect additional common shares that would have been outstanding if dilutive potential common shares had been issued, as well as any adjustments to income that would result from assumed issuance. Potential common shares that may be issued by the Company relate to outstanding stock options and restricted stock units (RSUs), and are determined using the treasury stock method. Earnings per share have been computed based on the following: Three months ended June 30, (in thousands) 2021 2020 Net income $ 28,362 $ 7,430 Average number of common shares outstanding 29,719 29,754 Effect of dilutive stock options and restricted stock 185 129 Average number of common shares outstanding used to calculate diluted earnings per share 29,904 29,883 Options excluded from diluted earnings per share because of their antidilutive effect — — Six months ended June 30, (in thousands) 2021 2020 Net income $ 62,011 $ 23,551 Average number of common shares outstanding 29,723 30,074 Effect of dilutive stock options and restricted stock 181 129 Average number of common shares outstanding used to calculate diluted earnings per share 29,904 30,203 Options excluded from diluted earnings per share because of their antidilutive effect — —

Comprehensive Income (Loss)

Comprehensive Income (Loss)	6 Months Ended
	Jun. 30, 2021
Equity [Abstract]
Comprehensive Income (Loss)	Comprehensive Income (Loss) Accounting principles generally require that recognized revenue, expenses, gains and losses be included in net income. Although certain changes in assets and liabilities, such as unrealized gains and losses on available-for-sale securities, are reported as a separate component of the equity section of the balance sheet identified as accumulated other comprehensive income (AOCI), such items, along with net income, are components of other comprehensive income (loss) (OCI). The components of other comprehensive income and related tax effects are as follows: Three months ended June 30, Six months ended June 30, (in thousands) 2021 2020 2021 2020 Unrealized holding losses on available for sale securities before reclassifications $ 7,392 $ 34,959 $ (4,945) $ 5,398 Amounts reclassified out of AOCI: Realized gain on debt securities — — — — Unrealized holding losses on available for sale securities after reclassifications 7,392 34,959 (4,945) 5,398 Tax effect (2,186) (10,334) 1,461 (1,595) Unrealized holding losses on available for sale securities, net of tax 5,206 24,625 (3,484) 3,803 Change in unfunded status of the supplemental retirement plans before reclassifications (49) 661 (98) 1,109 Amounts reclassified out of AOCI: Amortization of prior service cost (15) (13) (29) (27) Amortization of actuarial losses 64 478 127 956 Total amounts reclassified out of accumulated other comprehensive income 49 465 98 929 Change in unfunded status of the supplemental retirement plans after reclassifications — 1,126 — 2,038 Tax effect — — — — Change in unfunded status of the supplemental retirement plans, net of tax — 1,126 — 2,038 Change in joint beneficiary agreement liability before reclassifications — — (629) — Tax effect — — — — Change in joint beneficiary agreement liability before reclassifications, net of tax — — (629) — Total other comprehensive income (loss) $ 5,206 $ 25,751 $ (4,113) $ 5,841 The components of accumulated other comprehensive income, included in shareholders’ equity, are as follows: (in thousands) June 30, December 31, Net unrealized gain on available for sale securities $ 14,238 $ 19,183 Tax effect (4,210) (5,671) Unrealized holding gain on available for sale securities, net of tax 10,028 13,512 Unfunded status of the supplemental retirement plans (1,294) (1,294) Tax effect 382 382 Unfunded status of the supplemental retirement plans, net of tax (912) (912) Joint beneficiary agreement liability (949) (320) Tax effect — — Joint beneficiary agreement liability, net of tax (949) (320) Accumulated other comprehensive income $ 8,167 $ 12,280

Fair Value Measurement

Fair Value Measurement	6 Months Ended
	Jun. 30, 2021
Fair Value Disclosures [Abstract]
Fair Value Measurement	Fair Value MeasurementThe Company utilizes fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. In estimating fair value, the Company utilizes valuation techniques that are consistent with the market approach, income approach, and/or the cost approach. Inputs to valuation techniques include the assumptions that market participants would use in pricing an asset or liability including assumptions about the risk inherent in a particular valuation technique, the effect of a restriction on the sale or use of an asset and the risk of nonperformance. Marketable equity securities, debt securities available-for-sale, loans held for sale, and mortgage servicing rights are recorded at fair value on a recurring basis. Additionally, from time to time, the Company may be required to record at fair value other assets on a nonrecurring basis, such loans held for investment and certain other assets. These nonrecurring fair value adjustments typically involve application impairment write-downs of individual assets. The Company groups assets and liabilities at fair value in three levels, based on the markets in which the assets and liabilities are traded and the observable nature of the assumptions used to determine fair value. These levels are: Level 1 - Valuation is based upon quoted prices for identical instruments traded in active markets. Level 2 - Valuation is based upon quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market. Level 3 - Valuation is generated from model-based techniques that use at least one significant assumption not observable in the market. These unobservable assumptions reflect estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include use of option pricing models, discounted cash flow models and similar techniques. Marketable equity securities and debt securities available for sale - Marketable equity securities and debt securities available for sale are recorded at fair value on a recurring basis. Fair value measurement is based upon quoted prices, if available. If quoted prices are not available, fair values are measured using independent pricing models or other model-based valuation techniques such as the present value of future cash flows, adjusted for the security’s credit rating, prepayment assumptions and other factors such as credit loss assumptions. Level 1 securities include those traded on an active exchange, such as the New York Stock Exchange, U.S. Treasury securities that are traded by dealers or brokers in active over-the-counter markets and money market funds. Level 2 securities include mortgage-backed securities issued by government sponsored entities, municipal bonds and corporate debt securities. The Company had no securities classified as Level 3 during any of the periods covered in these financial statements. Loans held for sale - Loans held for sale are carried at the lower of cost or fair value. The fair value of loans held for sale is based on what secondary markets are currently offering for loans with similar characteristics. As such, we classify those loans subjected to recurring fair value adjustments as Level 2. Individually evaluated loans - Loans are not recorded at fair value on a recurring basis. However, from time to time, certain loans have individual risk characteristics not consistent with a pool of loans and is individually evaluated for credit reserves. Loans for which it is probable that payment of interest and principal will not be made in accordance with the original contractual terms of the loan agreement are typically individually evaluated. The fair value of these loans are estimated using one of several methods, including collateral value, fair value of similar debt, enterprise value, liquidation value and discounted cash flows. Those loans not requiring an allowance represent loans for which the fair value of the expected repayments or collateral exceed the recorded investments in such loans. Loans where an allowance is established based on the fair value of collateral require classification in the fair value hierarchy. When the fair value of the collateral is based on an observable market price or a current appraised value which uses substantially observable data, the Company records the loan as nonrecurring Level 2. When an appraised value is not available or management determines the fair value of the collateral is further impaired below the appraised value, or the appraised value contains a significant unobservable assumption, such as deviations from comparable sales, and there is no observable market price, the Company records the loan as nonrecurring Level 3. Foreclosed assets - Foreclosed assets include assets acquired through, or in lieu of, loan foreclosure. Foreclosed assets are held for sale and are initially recorded at fair value at the date of foreclosure, establishing a new cost basis. Subsequent to foreclosure, management periodically performs valuations and the assets are carried at the lower of carrying amount or fair value less cost to sell. When the fair value of foreclosed assets is based on an observable market price or a current appraised value which uses substantially observable data, the Company records the loan as nonrecurring Level 2. When an appraised value is not available or management determines the fair value of the collateral is further impaired below the appraised value, or the appraised value contains a significant unobservable assumption, such as deviations from comparable sales, and there is no observable market price, the Company records the foreclosed asset as nonrecurring Level 3. Revenue and expenses from operations and changes in the valuation allowance are included in other non-interest expense. Mortgage servicing rights - Mortgage servicing rights are carried at fair value. A valuation model, which utilizes a discounted cash flow analysis using a discount rate and prepayment speed assumptions is used in the computation of the fair value measurement. While the prepayment speed assumption is currently quoted for comparable instruments, the discount rate assumption currently requires a significant degree of management judgment and is therefore considered an unobservable input. As such, the Company classifies mortgage servicing rights subjected to recurring fair value adjustments as Level 3. The table below presents the recorded amount of assets and liabilities measured at fair value on a recurring basis (in thousands): Fair value at June 30, 2021 Total Level 1 Level 2 Level 3 Marketable equity securities $ 2,979 $ 2,979 $ — $ — Debt securities available for sale: Obligations of U.S. government corporations and agencies 1,133,416 — 1,133,416 — Obligations of states and political subdivisions 146,924 — 146,924 — Corporate bonds 2,556 — 2,556 — Asset backed securities 564,672 — 564,672 — Loans held for sale 5,723 — 5,723 — Mortgage servicing rights 5,603 — — 5,603 Total assets measured at fair value $ 1,861,873 $ 2,979 $ 1,853,291 $ 5,603 Fair value at December 31, 2020 Total Level 1 Level 2 Level 3 Marketable equity securities $ 3,025 $ 3,025 $ — $ — Debt securities available for sale: Obligations of U.S. government corporations and agencies 812,374 — 812,374 — Obligations of states and political subdivisions 129,095 — 129,095 — Corporate bonds 2,544 — 2,544 — Asset backed securities 470,251 — 470,251 — Loans held for sale 6,268 — 6,268 — Mortgage servicing rights 5,092 — — 5,092 Total assets measured at fair value $ 1,428,649 $ 3,025 $ 1,420,532 $ 5,092 Transfers between levels of the fair value hierarchy are recognized on the actual date of the event or circumstances that caused the transfer, which generally corresponds with the Company’s quarterly valuation process. There were no transfers between any levels during the six months ended June 30, 2021, or the year ended December 31, 2020. The following table provides a reconciliation of assets and liabilities measured at fair value using significant unobservable inputs (Level 3) on a recurring basis during the time periods indicated. Had there been any transfer into or out of Level 3 during the time periods indicated, the amount included in the “Transfers into (out of) Level 3” column would represent the beginning balance of an item in the period (interim quarter) during which it was transferred (in thousands): Three months ended June 30, Beginning Transfers Change Issuances Ending 2021: Mortgage servicing rights $ 5,607 — $ (471) $ 467 $ 5,603 2020: Mortgage servicing rights $ 5,168 — $ (1,236) $ 318 $ 4,250 Six months ended June 30, Beginning Transfers Change Issuances Ending 2021: Mortgage servicing rights $ 5,092 — $ (459) $ 970 $ 5,603 2020: Mortgage servicing rights $ 6,200 — $ (2,494) $ 544 $ 4,250 The key unobservable inputs used in determining the fair value of mortgage servicing rights are mortgage prepayment speeds and the discount rate used to discount cash projected cash flows. Generally, any significant increases in the mortgage prepayment speed and discount rate utilized in the fair value measurement of the mortgage servicing rights will result in a negative fair value adjustments (and decrease in the fair value measurement). Conversely, a decrease in the mortgage prepayment speed and discount rate will result in a positive fair value adjustment (and increase in the fair value measurement). The following table presents quantitative information about recurring Level 3 fair value measurements at June 30, 2021 and December 31, 2020: As of June 30, 2021: Fair Value Valuation Unobservable Range, Mortgage Servicing Rights $ 5,603 Discounted cash flow Constant prepayment rate 12% - 17%; 14.2% Discount rate 10% - 14%; 12% As of December 31, 2020: Mortgage Servicing Rights $ 5,092 Discounted cash flow Constant prepayment rate 14% - 20.0%; 17.6% Discount rate 10% - 14%; 12% The tables below present the recorded investment in assets and liabilities measured at fair value on a nonrecurring basis, as of the dates indicated (in thousands): June 30, 2021 Total Level 1 Level 2 Level 3 Total Gains (Losses) Fair value: Individually evaluated loans $ 4,912 — — $ 4,912 $ (1,604) Foreclosed assets 123 — — 123 21 Total assets measured at fair value $ 5,035 $ — $ — $ 5,035 $ (1,583) December 31, 2020 Total Level 1 Level 2 Level 3 Total Gains (Losses) Fair value: Individually evaluated loans $ 1,424 — — $ 1,424 $ (1,489) Foreclosed assets 979 — — 979 155 Total assets measured at fair value $ 2,403 — — $ 2,403 $ (1,334) June 30, 2020 Total Level 1 Level 2 Level 3 Total Losses Fair value: Individually evaluated loans $ 162 — — $ 162 $ (16) The individually evaluated loan amounts above represent collateral dependent loans that have been adjusted to fair value. When the Company identifies a collateral dependent loan with unique risk characteristics, the Company evaluates the need for an allowance using the current fair value of the collateral, less selling costs. Depending on the characteristics of a loan, the fair value of collateral is generally estimated by obtaining external appraisals. If the Company determines that the value of the loan is less than the recorded investment in the loan, the Company recognizes this impairment and adjust the carrying value of the loan to fair value through the allowance for credit losses. The loss represents charge-offs or impairments on collateral dependent loans for fair value adjustments based on the fair value of collateral. The carrying value of loans fully charged-off is zero. The foreclosed assets amount above represents impaired real estate that has been adjusted to fair value. Foreclosed assets represent real estate which the Company has taken control of in partial or full satisfaction of loans. At the time of foreclosure, other real estate owned is recorded at fair value less costs to sell, which becomes the property’s new basis. Any write-downs based on the asset’s fair value at the date of acquisition are charged to the allowance for credit losses. After foreclosure, management periodically performs valuations such that the real estate is carried at the lower of its new cost basis or fair value, net of estimated costs to sell. Fair value adjustments on other real estate owned are recognized within net loss on real estate owned. The loss represents impairments on real estate owned for fair value adjustments based on the fair value of the real estate. The Company’s property appraisals are primarily based on the sales comparison approach and income approach methodologies, which consider recent sales of comparable properties, including their income generating characteristics, and then make adjustments to reflect the general assumptions that a market participant would make when analyzing the property for purchase. These adjustments may increase or decrease an appraised value and can vary significantly depending on the location, physical characteristics and income producing potential of each property. Additionally, the quality and volume of market information available at the time of the appraisal can vary from period to period and cause significant changes to the nature and magnitude of comparable sale adjustments. Given these variations, comparable sale adjustments are generally not a reliable indicator for how fair value will increase or decrease from period to period. Under certain circumstances, management discounts are applied based on specific characteristics of an individual property. The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a nonrecurring basis at June 30, 2021: June 30, 2021 Fair Value Valuation Unobservable Inputs Range, Individually evaluated loans $ 4,912 Sales comparison Adjustment for differences between Not meaningful Foreclosed assets (Residential real estate) $ 123 Sales comparison Adjustment for differences between Not meaningful The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a nonrecurring basis at December 31, 2020: December 31, 2020 Fair Value Valuation Unobservable Inputs Range, Individually evaluated loans $ 1,424 Sales comparison Adjustment for differences between Not meaningful Foreclosed assets (Residential real estate) $ 979 Sales comparison Adjustment for differences between Not meaningful Fair values for financial instruments are management’s estimates of the values at which the instruments could be exchanged in a transaction between willing parties. The Company uses the exit price notion when measuring the fair value of financial instruments. These estimates are subjective and may vary significantly from amounts that would be realized in actual transactions. In addition, other significant assets are not considered financial assets including, any mortgage banking operations, deferred tax assets, and premises and equipment. Further, the tax ramifications related to the realization of the unrealized gains and losses can have a significant effect on the fair value estimates and have not been considered in any of these estimates. June 30, 2021 December 31, 2020 (in thousands) Carrying Fair Carrying Fair Financial assets: Level 1 inputs: Cash and due from banks $ 86,052 $ 86,052 $ 77,253 $ 77,253 Cash at Federal Reserve and other banks 553,688 553,688 592,298 592,298 Level 2 inputs: Securities held to maturity 235,778 247,019 284,563 298,726 Restricted equity securities 17,250 N/A 17,250 N/A Level 3 inputs: Loans, net 4,870,278 4,875,176 4,671,280 4,753,027 Financial liabilities: Level 2 inputs: Deposits 6,992,053 6,998,976 6,505,934 6,507,235 Other borrowings 40,559 40,559 26,914 26,914 Level 3 inputs: Junior subordinated debt 57,852 57,795 57,635 56,632 (in thousands) Contract Fair Contract Fair Off-balance sheet: Level 3 inputs: Commitments $ 1,474,690 $ 14,747 $ 1,426,827 $ 14,268 Standby letters of credit 14,112 141 15,056 151 Overdraft privilege commitments 112,993 1,129 110,813 1,108

Regulatory Matters

Regulatory Matters	6 Months Ended
	Jun. 30, 2021
Banking Regulation, Global Systemically Important Bank (GSIB) Surcharge [Abstract]
Regulatory Matters	Regulatory Matters The Company is subject to various regulatory capital requirements administered by federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Company’s consolidated financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company must meet specific capital guidelines that involve quantitative measures of the Company’s assets, liabilities and certain off-balance-sheet items as calculated under regulatory accounting practices. The Company’s capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings and other factors. Quantitative measures established by regulation to ensure capital adequacy require the Company to maintain minimum amounts and ratios (set forth in the table below) of total, Tier 1, and common equity Tier 1 capital to risk-weighted assets, and of Tier 1 capital to average assets. The following tables present actual and required capital ratios as of June 30, 2021 and December 31, 2020 for the Company and the Bank under applicable Basel III Capital Rules. The minimum capital amounts presented include the minimum required capital levels as of June 30, 2021 and December 31, 2020 based on the then phased-in provisions of the Basel III Capital Rules. Capital levels required to be considered well capitalized are based upon prompt corrective action regulations, as amended to reflect the changes under the Basel III Capital Rules. Actual Required for Capital Adequacy Purposes Required to be As of June 30, 2021: Amount Ratio Amount Ratio Amount Ratio (dollars in thousands) Total Capital (to Risk Weighted Assets): Consolidated $ 846,617 15.31 % $ 580,463 10.50 % N/A N/A Tri Counties Bank $ 835,709 15.12 % $ 580,270 10.50 % $ 552,638 10.00 % Tier 1 Capital (to Risk Weighted Assets): Consolidated $ 777,241 14.06 % $ 469,899 8.50 % N/A N/A Tri Counties Bank $ 766,377 13.87 % $ 469,743 8.50 % $ 442,111 8.00 % Common equity Tier 1 Capital (to Risk Weighted Assets): Consolidated $ 721,126 13.04 % $ 386,975 7.00 % N/A N/A Tri Counties Bank $ 766,377 13.87 % $ 386,847 7.00 % $ 359,215 6.50 % Tier 1 Capital (to Average Assets): Consolidated $ 777,241 9.85 % $ 315,578 4.00 % N/A N/A Tri Counties Bank $ 766,377 9.72 % $ 315,261 4.00 % $ 394,076 5.00 % Actual Required for Capital Adequacy Purposes Required to be As of December 31, 2020: Amount Ratio Amount Ratio Amount Ratio (dollars in thousands) Total Capital (to Risk Weighted Assets): Consolidated $ 793,433 15.22 % $ 547,352 10.50 % N/A N/A Tri Counties Bank $ 780,320 14.97 % $ 547,156 10.50 % $ 521,101 10.00 % Tier 1 Capital (to Risk Weighted Assets): Consolidated $ 727,879 13.96 % $ 443,094 8.50 % N/A N/A Tri Counties Bank $ 714,811 13.72 % $ 442,936 8.50 % $ 416,881 8.00 % Common equity Tier 1 Capital (to Risk Weighted Assets): Consolidated $ 671,975 12.89 % $ 364,901 7.00 % N/A N/A Tri Counties Bank $ 714,811 13.72 % $ 364,771 7.00 % $ 338,716 6.50 % Tier 1 Capital (to Average Assets): Consolidated $ 727,879 9.93 % $ 293,138 4.00 % N/A N/A Tri Counties Bank $ 714,811 9.76 % $ 292,949 4.00 % $ 366,186 5.00 % As of June 30, 2021 and December 31, 2020, capital levels at the Company and the Bank exceed all capital adequacy requirements under the Basel III Capital Rules. Also, at June 30, 2021 and December 31, 2020, the Bank’s capital levels exceeded the minimum amounts necessary to be considered well capitalized under the current regulatory framework for prompt corrective action. The Basel III Capital Rules require for all banking organizations to maintain a capital conservation buffer above the minimum risk-based capital requirements in order to avoid certain limitations on capital distributions, stock repurchases and discretionary bonus payments to executive officers. The capital conservation buffer is exclusively composed of common equity tier 1 capital, and it applies to each of the risk-based capital ratios but not the leverage ratio. At June 30, 2021, the Company and the Bank are in compliance with the capital conservation buffer requirement.

Subsequent Events

Subsequent Events	6 Months Ended
	Jun. 30, 2021
Subsequent Events [Abstract]
Subsequent Events	Subsequent EventsOn July 27, 2021, the Company entered into an Agreement and Plan of Merger and Reorganization (the “Merger Agreement”) with Valley Republic Bancorp, a California corporation (“Valley”), providing for the merger of Valley with and into the Company, with the Company as the surviving corporation. The Merger Agreement contemplates that immediately after the Merger, Valley Republic Bank, a California state-chartered bank and wholly-owned subsidiary of Valley, will merge with and into Tri Counties Bank, a California state-chartered bank and wholly-owned subsidiary of the Company, with Tri Counties Bank as the surviving bank (the “Bank Merger”). The Merger Agreement was adopted and unanimously approved by the Board of Directors of each of the Company and Valley. As of June 30, 2021, Valley had a total asset size of approximately $1.36 billion. The transaction, subject to customary regulatory approvals, is expected to close during the fourth quarter of 2021.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2021
Accounting Policies [Abstract]
Description of Business and Basis of Presentation	Description of Business and Basis of Presentation TriCo Bancshares (the “Company” or “we”) is a California corporation organized to act as a bank holding company for Tri Counties Bank (the “Bank”). The Company and the Bank are headquartered in Chico, California. The Bank is a California-chartered bank that is engaged in the general commercial banking business in 28 California counties. The Company has five capital subsidiary business trusts (collectively, the “Capital Trusts”) that issued trust preferred securities, including two organized by the Company and three acquired with the acquisition of North Valley Bancorp. The consolidated financial statements are prepared in accordance with accounting policies generally accepted in the United States of America and general practices in the banking industry. All adjustments necessary for a fair presentation of these consolidated financial statements have been included and are of a normal and recurring nature. The financial statements include the accounts of the Company. All inter-company accounts and transactions have been eliminated in consolidation. For financial reporting purposes, the Company’s investments in the Capital Trusts of $1,737,000 are accounted for under the equity method and, accordingly, are not consolidated and are included in other assets on the consolidated balance sheet. The subordinated debentures issued and guaranteed by the Company and held by the Capital Trusts are reflected as debt on the Company’s consolidated balance sheet.
Use of Estimates in the Preparation of Financial Statements	Use of Estimates in the Preparation of Financial Statements The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires Management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions. Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission. These unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020 (the “2020 Annual Report”). The Company believes that the disclosures made are adequate to make the information not misleading.
Segment and Significant Group Concentration of Credit Risk	Segment and Significant Group Concentration of Credit Risk The Company grants agribusiness, commercial, consumer, and residential loans to customers located throughout northern and central California. The Company has a diversified loan portfolio within the business segments located in this geographical area. The Company currently classifies all its operation into one business segment that it denotes as community banking.
Geographical Descriptions	Geographical Descriptions For the purpose of describing the geographical location of the Company’s operations, the Company has defined northern California as that area of California north of, and including, Stockton to the east and San Jose to the west; central California as that area of the state south of Stockton and San Jose, to and including, Bakersfield to the east and San Luis Obispo to the west; and southern California as that area of the state south of Bakersfield and San Luis Obispo.
Reclassification	Reclassification Some items in the prior year consolidated financial statements were reclassified to conform to the current presentation. Reclassifications had no effect on prior year net income or shareholders’ equity.
Cash and Cash Equivalents	Cash and Cash Equivalents Net cash flows are reported for loan and deposit transactions and other borrowings. For purposes of the consolidated statement of cash flows, cash, due from banks with original maturities less than 90 days, interest-earning deposits in other banks, and Federal funds sold are considered to be cash equivalents.
Allowance for Credit Losses - Securities	Allowance for Credit Losses - Securities The Company measures expected credit losses on held-to-maturity debt securities on a collective basis by major security type, then further
Loans	Loans Loans that management has the intent and ability to hold until maturity or payoff are reported at principle amount outstanding, net of deferred loan fees and costs. Loans are placed in nonaccrual status when reasonable doubt exists as to the full, timely collection of interest or principal, or a loan becomes contractually past due by 90 days or more with respect to interest or principal and is not well secured and in the process of collection. When a loan is placed on nonaccrual status, all interest previously accrued but not collected is reversed against interest income. Income on such loans is then recognized only to the extent that cash is received and where the future collection of principal is considered probable. Interest accruals are resumed on such loans only when they are brought fully current with respect to interest and principal and when, in the judgment of Management, the loan is estimated to be fully collectible as to both principal and interest. Accrued interest receivable is not included in the calculation of the allowance for credit losses.
Allowance for Credit Losses - Loans	Allowance for Credit Losses - Loans The allowance for credit losses (ACL) is a valuation account that is deducted from the loan's amortized cost basis to present the net amount expected to be collected on the loans. Loans are charged off against the allowance when management believes the recorded loan balance is confirmed as uncollectible. Expected recoveries do not exceed the aggregate of amounts previously charged-off and expected to be charged-off. Regardless of the determination that a charge-off is appropriate for financial accounting purposes, the Company manages its loan portfolio by continually monitoring, where possible, a borrower's ability to pay through the collection of financial information, delinquency status, borrower discussion and the encouragement to repay in accordance with the original contract or modified terms, if appropriate. Management estimates the allowance balance using relevant information, from internal and external sources, relating to past events, current conditions, and reasonable and supportable forecasts. The allowance for credit losses is measured on a collective (pool) basis when similar risk characteristics exist. Historical credit loss experience provides the basis for the estimation of expected credit losses, which captures loan balances as of a point in time to form a cohort, then tracks the respective losses generated by that cohort of loans over the remaining life. The Company identified and accumulated loan cohort historical loss data beginning with the fourth quarter of 2008 and through the current period. In situations where the Company's actual loss history was not statistically relevant, the loss history of peers, defined as financial institutions with assets greater than three billion and less than ten billion, were utilized to create a minimum loss rate. Adjustments to historical loss information are made for differences in relevant current loan-specific risk characteristics, such as historical timing of losses relative to the loan origination. In its loss forecasting framework, the Company incorporates forward-looking information through the use of macroeconomic scenarios applied over the forecasted life of the assets. These macroeconomic scenarios incorporate variables that have historically been key drivers of increases and decreases in credit losses. These variables include, but are not limited to changes in environmental conditions, such as California unemployment rates, household debt levels and U.S. gross domestic product. A loan is considered to be collateral dependent when repayment is expected to be provided substantially through the operation or sale of the collateral. The ACL on collateral dependent loans is measured using the fair value of the underlying collateral, adjusted for costs to sell when applicable, less the amortized cost basis of the financial asset. If the value of underlying collateral is determined to be less than the recorded amount of the loan, a charge-off will be taken. Loans for which the terms have been modified resulting in a concession, and for which the borrower is experiencing financial difficulties, is considered to be a troubled debt restructuring (TDR). The ACL on a TDR is measured using the same method as all other portfolio loans, except when the value of a concession cannot be measured using a method other than the discounted cash flow method. When the value of a concession is measured using the discounted cash flow method, the ACL is determined by discounting the expected future cash flows at the original interest rate of the loan. The Company has identified the following portfolio segments to evaluate and measure the allowance for credit loss: Commercial real estate : Commercial real estate - Non-owner occupied: These commercial properties typically consist of buildings which are leased to others for their use and rely on rents as the primary source of repayment. Property types are predominantly office, retail, or light industrial but the portfolio also has some special use properties. As such, the risk of loss associated with these properties is primarily driven by general economic changes or changes in regional economies and the impact of such on a tenant’s ability to pay. Ultimately this can affect occupancy, rental rates, or both. Additional risk of loss can come from new construction resulting in oversupply, the costs to hold or operate the property, or changes in interest rates. The terms on these loans at origination typically have maturities from five fifteen Commercial real estate - Owner occupied: These credits are primarily susceptible to changes in the financial condition of the business operated by the property owner. This may be driven by changes in, among other things, industry challenges, factors unique to the operating geography of the borrower, change in the individual fortunes of the business owner, general economic conditions and changes in business cycles. When default is driven by issues related specifically to the business owner, collateral values tend to provide better repayment support and may result in little or no loss. Alternatively, when default is driven more by general economic conditions, the underlying collateral may have devalued more and thus result in larger losses in the event of default. The terms on these loans at origination typically have maturities from five fifteen Multifamily: These commercial properties are generally comprised of more than four rentable units, such as apartment buildings, with each unit intended to be occupied as the primary residence for one or more persons. Multifamily properties are also subject to changes in general or regional economic conditions, such as unemployment, ultimately resulting in increased vacancy rates or reduced rents or both. In addition, new construction can create an oversupply condition and market competition resulting in increased vacancy, reduced market rents, or both. Due to the nature of their use and the greater likelihood of tenant turnover, the management of these properties is more intensive and therefore is more critical to the preclusion of loss. Farmland: While the Company has few loans that were originated for the purpose of the acquisition of these commercial properties, loans secured by farmland represent unique risks that are associated with the operation of an agricultural businesses. The valuation of farmland can vary greatly over time based on the property's access to resources including but not limited to water, crop prices, foreign exchange rates, government regulation or restrictions, and the nature of ongoing capital investment needed to maintain the quality of the property. Loans secured by farmland typically represent less risk to the Company than other agriculture loans as the real estate typically provides greater support in the event of default or need for longer term repayment. Consumer loans : SFR 1-4 1st DT Liens: The most significant drivers of potential loss within the Company's residential real estate portfolio relate general, regional, or individual changes in economic conditions and their effect on employment and borrowers cash flow. Risk in this portfolio is best measured by changes in borrower credit score and loan-to-value. Loss estimates are based on the general movement in credit score, economic outlook and its effects on employment and the value of homes and the Bank’s historical loss experience adjusted to reflect the economic outlook and the unemployment rate. SFR HELOCs and Junior Liens: Similar to residential real estate term loans, HELOCs and junior liens performance is also primarily driven by borrower cash flows based on employment status. However, HELOCs carry additional risks associated with the fact that most of these loans are secured by a deed of trust in a position that is junior to the primary lien holder. Furthermore, the risk that as the borrower's financial strength deteriorates, the outstanding balance on these credit lines may increase as they may only be canceled by the Company if certain limited criteria are met. In addition to the allowance for credit losses maintained as a percent of the outstanding loan balance, the Company maintains additional reserves for the unfunded portion of the HELOC. Other: The majority of consumer loans are secured by automobiles, with the remainder primarily unsecured revolving debt (credit cards). These loans are susceptible to three primary risks; non-payment due to income loss, over-extension of credit and, when the borrower is unable to pay, shortfall in collateral value, if any. Typically non-payment is due to loss of job and will follow general economic trends in the marketplace driven primarily by rises in the unemployment rate. Loss of collateral value can be due to market demand shifts, damage to collateral itself or a combination of those factors. Credit card loans are unsecured and while collection efforts are pursued in the event of default, there is typically limited opportunity for recovery. Loss estimates are based on the general movement in credit score, economic outlook and its effects on employment and the Bank’s historical loss experience adjusted to reflect the economic outlook and the unemployment rate. Commercial and Industrial: Repayment of these loans is primarily based on the cash flow of the borrower, and secondarily on the underlying collateral provided by the borrower. A borrower's cash flow may be unpredictable, and collateral securing these loans may fluctuate in value. Most often, collateral includes accounts receivable, inventory, or equipment. Collateral securing these loans may depreciate over time, may be difficult to appraise, may be illiquid and may fluctuate in value based on the success of the business. Actual and forecast changes in gross domestic product are believed to be corollary to losses associated with these credits. Construction : While secured by real estate, construction loans represent a greater level of risk than term real estate loans due to the nature of the additional risks associated with the not only the completion of construction within an estimated time period and budget, but also the need to either sell the building or reach a level of stabilized occupancy sufficient to generate the cash flows necessary to support debt service and operating costs. The Company seeks to mitigate the additional risks associated with construction lending by requiring borrowers to comply with lower loan to value ratios and additional covenants as well as strong tertiary support of guarantors. The loss forecasting model applies the historical rate of loss for similar loans over the expected life of the asset as adjusted for macroeconomic factors. Agriculture Production: Repayment of agricultural loans is dependent upon successful operation of the agricultural business, which is greatly impacted by factors outside the control of the borrower. These factors include adverse weather conditions, including access to water, that may impact crop yields, loss of livestock due to disease or other factors, declines in market prices for agriculture products, changes in foreign exchange, and the impact of government regulations. In addition, many farms are dependent on a limited number of key individuals whose injury or death may significantly affect the successful operation of the business. Consequently, agricultural production loans may involve a greater degree of risk than other types of loans. Leases: The loss forecasting model applies the historical rate of loss for similar loans over the expected life of the asset. Leases typically represent an elevated level of credit risk as compared to loans secured by real estate as the collateral for leases is often subject to a more rapid rate of depreciation or depletion. The ultimate severity of loss is impacted by the type of collateral securing the exposure, the size of the exposure, the borrower’s industry sector, any guarantors and the geographic market. Assumptions of expected loss are conditioned to the economic outlook and the other variables discussed above. Unfunded commitments : The estimated credit losses associated with these unfunded lending commitments is calculated using the same models and methodologies noted above and incorporate utilization assumptions at time of default. The reserve for unfunded commitments is maintained on the consolidated balance sheet in other liabilities.
Accounting Standards Adopted in 2021 and Pending Adoption	Accounting Standards Adopted in 2021 On January 1, 2021, the Company adopted ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. This ASU simplified the accounting for income taxes by removing certain exceptions to the general principles in Topic 740. The guidance also promoted consistent application and simplification of GAAP for other areas of Topic 740 by clarifying and amending existing guidance. On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security Act (CARES Act) was enacted in response to the Coronavirus Disease 2019 (COVID-19) pandemic. The CARES Act provides optional temporary relief from troubled debt restructuring and impairment accounting requirements for loan modifications related to the COVID-19 pandemic made during the period from March 1, 2020 to the earlier of December 31, 2020 or 60 days after the national emergency concerning COVID-19 declared by the President terminates. The applicable period for this relief was extended through 2021 by way of the Consolidated Appropriations Act. Following the passage of the CARES Act legislation, the "Interagency Statement on Loan Modifications and Reporting for Financial Institutions Working with Customers Affected by the Coronavirus" was issued by federal bank regulators, which similarly offers temporary relief from troubled debt restructuring accounting for loan payment deferrals for certain customers whose businesses are experiencing economic hardship due to Coronavirus. The Interagency Statement requires the modification event to be short-term and COVID-19 related, requiring the borrower be not more than 30 days past due as of the date the modification program was implemented, and allowing Management to apply judgement as when the modification program terminates. The ability to suspend TDR accounting under either program does not apply to any adverse impact on the credit of a borrower that is not related to the COVID-19 pandemic. Accounting Standards Pending Adoption FASB issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting. This ASU provides temporary optional guidance to ease the potential burden in accounting for reference rate reform by providing optional expedients and exceptions for applying generally accepted accounting principles (GAAP) to contracts, hedging

Investment Securities (Tables)

Investment Securities (Tables)	6 Months Ended
	Jun. 30, 2021
Investments, Debt and Equity Securities [Abstract]
Amortized Cost and Estimated Fair Values of Investments Securities	The amortized cost, estimated fair values and allowance for credit losses of investments in debt securities are summarized in the following tables: June 30, 2021 (in thousands) Amortized Gross Gross Allowance for Credit Losses Estimated Debt Securities Available for Sale Obligations of U.S. government agencies $ 1,126,342 $ 11,628 $ (4,554) $ — $ 1,133,416 Obligations of states and political subdivisions 141,168 6,208 (452) — 146,924 Corporate bonds 2,473 83 — — 2,556 Asset backed securities 563,347 2,941 (1,616) — 564,672 Total debt securities available for sale $ 1,833,330 $ 20,860 $ (6,622) $ — $ 1,847,568 Debt Securities Held to Maturity Obligations of U.S. government agencies $ 226,925 $ 10,926 $ — $ — $ 237,851 Obligations of states and political subdivisions 8,853 315 — — 9,168 Total debt securities held to maturity $ 235,778 $ 11,241 $ — $ — $ 247,019 December 31, 2020 (in thousands) Amortized Gross Gross Allowance for Credit Losses Estimated Debt Securities Available for Sale Obligations of U.S. government agencies $ 795,555 $ 17,710 $ (891) $ — $ 812,374 Obligations of states and political subdivisions 123,347 5,748 — — 129,095 Corporate bonds 2,459 85 — — 2,544 Asset backed securities 473,720 1,682 (5,151) — 470,251 Total debt securities available for sale $ 1,395,081 $ 25,225 $ (6,042) $ — $ 1,414,264 Debt Securities Held to Maturity Obligations of U.S. government agencies 273,667 13,774 — $ — 287,441 Obligations of states and political subdivisions 10,896 389 — — 11,285 Total debt securities held to maturity $ 284,563 $ 14,163 $ — $ — $ 298,726
Amortized Cost and Estimated Fair Value of Debt Securities by Contractual Maturity	As of June 30, 2021, the contractual final maturity for available for sale and held to maturity investment securities is as follows: Debt Securities Available for Sale Held to Maturity (in thousands) Amortized Estimated Amortized Estimated Due in one year $ 1,093 $ 1,117 $ — $ — Due after one year through five years 181,624 181,791 1,011 1,125 Due after five years through ten years 337,145 338,985 20,641 21,363 Due after ten years 1,313,468 1,325,675 214,126 224,531 Totals $ 1,833,330 $ 1,847,568 $ 235,778 $ 247,019
Gross Unrealized Losses on Investment Securities	Gross unrealized losses on debt securities and the fair value of the related securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, were as follows: June 30, 2021: Less than 12 months 12 months or more Total (in thousands) Fair Unrealized Fair Unrealized Fair Unrealized Debt Securities Available for Sale Obligations of U.S. government agencies $ 566,137 $ (4,554) $ — $ — $ 566,137 $ (4,554) Obligations of states and political subdivisions 24,207 (452) — — 24,207 (452) Asset backed securities 103,518 (394) 152,895 (1,222) 256,413 (1,616) Total debt securities available for sale $ 693,862 $ (5,400) $ 152,895 $ (1,222) $ 846,757 $ (6,622) December 31, 2020: Less than 12 months 12 months or more Total (in thousands) Fair Unrealized Fair Unrealized Fair Unrealized Debt Securities Available for Sale Obligations of U.S. government agencies $ 160,543 $ (891) $ — $ — $ 160,543 $ (891) Asset backed securities 51,544 (441) 297,020 (4,710) 348,564 (5,151) Total debt securities available for sale $ 212,087 $ (1,332) $ 297,020 $ (4,710) $ 509,107 $ (6,042)
Amortized Cost of Debt Securities Held-to-Maturity	The following table summarizes the amortized cost of debt securities held-to-maturity at the dates indicated, aggregated by credit quality indicator: June 30, 2021 December 31, 2020 AAA/AA/A BBB/BB/B AAA/AA/A BBB/BB/B (In thousands) (In thousands) Debt Securities Held to Maturity Obligations of U.S. government agencies $ 226,925 $ — $ 273,667 $ — Obligations of states and political subdivisions 8,853 — 10,896 — Total debt securities held to maturity $ 235,778 $ — $ 284,563 $ —

Loans (Tables)

Loans (Tables)	6 Months Ended
	Jun. 30, 2021
Receivables [Abstract]
Summary of Loan Balances	A summary of loan balances follows: (in thousands) June 30, 2021 December 31, 2020 Commercial real estate: CRE non-owner occupied $ 1,534,256 $ 1,535,555 CRE owner occupied 659,948 624,375 Multifamily 828,101 639,480 Farmland 172,031 152,492 Total commercial real estate loans 3,194,336 2,951,902 Consumer: SFR 1-4 1st DT liens 654,373 546,592 SFR HELOCs and junior liens 325,127 327,484 Other 71,109 78,032 Total consumer loans 1,050,609 952,108 Commercial and industrial 452,069 526,327 Construction 200,714 284,842 Agriculture production 41,967 44,164 Leases 5,199 3,784 Total loans, net of deferred loan fees and discounts $ 4,944,894 $ 4,763,127 Total principal balance of loans owed, net of charge-offs $ 4,984,824 $ 4,805,596 Unamortized net deferred loan fees (19,843) (16,984) Discounts to principal balance of loans owed, net of charge-offs (20,087) (25,485) Total loans, net of unamortized deferred loan fees and discounts $ 4,944,894 $ 4,763,127 Allowance for credit losses on loans $ (86,062) $ (91,847)

Allowance for Credit Losses (Ta

Allowance for Credit Losses (Tables)	6 Months Ended
	Jun. 30, 2021
Allowance For Loan And Lease Losses [Abstract]
Summary of Activity in Allowance for Loan Losses, and Ending Balance of Loans, Net of Unearned Fees for Periods Indicated	For the periods indicated, the following tables summarize the activity in the allowance for credit losses on loans which is recorded as a contra asset, and the reserve for unfunded commitments which is recorded on the balance sheet within other liabilities: Allowance for credit losses – Three months ended June 30, 2021 (in thousands) Beginning Charge-offs Recoveries Provision (benefit) Ending Commercial real estate: CRE non-owner occupied $ 26,434 $ — $ — $ (406) $ 26,028 CRE owner occupied 9,874 — — 589 10,463 Multifamily 12,371 — — 825 13,196 Farmland 1,724 — — 226 1,950 Total commercial real estate loans 50,403 — — 1,234 51,637 Consumer: SFR 1-4 1st DT liens 10,665 — 1 (37) 10,629 SFR HELOCs and junior liens 11,079 — 512 (890) 10,701 Other 2,860 (86) 59 (213) 2,620 Total consumer loans 24,604 (86) 572 (1,140) 23,950 Commercial and industrial 4,464 (301) 79 269 4,511 Construction 5,476 — — (525) 4,951 Agriculture production 988 — 2 17 1,007 Leases 6 — — — 6 Allowance for credit losses on loans 85,941 (387) 653 (145) 86,062 Reserve for unfunded commitments 3,580 — — (115) 3,465 Total $ 89,521 $ (387) $ 653 $ (260) $ 89,527 Allowance for credit losses – Six months ended June 30, 2021 (in thousands) Beginning Charge-offs Recoveries Provision (benefit) Ending Commercial real estate: CRE non-owner occupied $ 29,380 $ — $ 2 $ (3,354) $ 26,028 CRE owner occupied 10,861 — 1 (399) 10,463 Multifamily 11,472 — — 1,724 13,196 Farmland 1,980 — — (30) 1,950 Total commercial real estate loans 53,693 — 3 (2,059) 51,637 Consumer: SFR 1-4 1st DT liens 10,117 — 11 501 10,629 SFR HELOCs and junior liens 11,771 — 797 (1,867) 10,701 Other 3,260 (279) 165 (526) 2,620 Total consumer loans 25,148 (279) 973 (1,892) 23,950 Commercial and industrial 4,252 (334) 215 378 4,511 Construction 7,540 — — (2,589) 4,951 Agriculture production 1,209 — 22 (224) 1,007 Leases 5 — — 1 6 Allowance for credit losses on loans 91,847 (613) 1,213 (6,385) 86,062 Reserve for unfunded commitments 3,400 — — 65 3,465 Total $ 95,247 $ (613) $ 1,213 $ (6,320) $ 89,527 Allowance for credit losses – Year ended December 31, 2020 (in thousands) Beginning Adoption of CECL Charge-offs Recoveries Provision Ending Balance Commercial real estate: CRE non-owner occupied $ 5,948 $ 6,701 $ — $ 198 $ 16,533 $ 29,380 CRE owner occupied 2,027 2,281 — 28 6,525 10,861 Multifamily 3,352 2,281 — — 5,839 11,472 Farmland 668 585 (182) — 909 1,980 Total commercial real estate loans 11,995 11,848 (182) 226 29,806 53,693 Consumer: SFR 1-4 1st DT liens 2,306 2,675 (13) 416 4,733 10,117 SFR HELOCs and junior liens 6,183 4,638 (116) 304 762 11,771 Other 1,595 971 (670) 347 1,017 3,260 Total consumer loans 10,084 8,284 (799) 1,067 6,512 25,148 Commercial and industrial 4,867 (1,961) (774) 568 1,552 4,252 Construction 3,388 933 — — 3,219 7,540 Agriculture production 261 (179) — 24 1,103 1,209 Leases 21 (12) — — (4) 5 Allowance for credit losses on loans 30,616 18,913 (1,755) 1,885 42,188 91,847 Reserve for unfunded commitments 2,775 — — — 625 3,400 Total $ 33,391 $ 18,913 $ (1,755) $ 1,885 $ 42,813 $ 95,247 Allowance for credit losses – Three months ended June 30, 2020 (in thousands) Beginning Charge-offs Recoveries Provision Ending Balance Commercial real estate: CRE non-owner occupied $ 18,034 $ — $ 5 $ 8,052 $ 26,091 CRE owner occupied 5,366 — 4 3,340 8,710 Multifamily 5,140 — — 3,441 8,581 Farmland 713 — — 755 1,468 Total commercial real estate loans 29,253 — 9 15,588 44,850 Consumer: SFR 1-4 1st DT liens 5,650 (11) 2 2,374 8,015 SFR HELOCs and junior liens 11,196 (23) 92 843 12,108 Other 2,746 (243) 72 467 3,042 Total consumer loans 19,592 (277) 166 3,684 23,165 Commercial and industrial 3,867 (214) 55 310 4,018 Construction 4,595 — — 2,180 6,775 Agriculture production 593 — — 326 919 Leases 11 — — 1 12 Allowance for credit losses on loans $ 57,911 $ (491) $ 230 $ 22,089 $ 79,739 Reserve for unfunded commitments 2,845 — — 154 2,999 Total $ 60,756 $ (491) $ 230 $ 22,243 $ 82,738 Allowance for credit losses – Six months ended June 30, 2020 (in thousands) Beginning Adoption of CECL Charge-offs Recoveries Provision Ending Balance Commercial real estate: CRE non-owner occupied $ 5,948 $ 6,701 $ — $ 193 $ 13,249 $ 26,091 CRE owner occupied 2,027 2,281 — 9 4,393 8,710 Multifamily 3,352 2,281 — — 2,948 8,581 Farmland 668 585 — — 215 1,468 Total commercial real estate loans 11,995 11,848 — 202 20,805 44,850 Consumer: SFR 1-4 1st DT liens 2,306 2,675 (11) 412 2,633 8,015 SFR HELOCs and junior liens 6,183 4,638 (23) 140 1,170 12,108 Other 1,595 971 (373) 167 682 3,042 Total consumer loans 10,084 8,284 (407) 719 4,485 23,165 Commercial and industrial 4,867 (1,961) (594) 181 1,525 4,018 Construction 3,388 933 — — 2,454 6,775 Agriculture production 261 (179) — 20 817 919 Leases 21 (12) — — 3 12 Allowance for credit losses on loans 30,616 18,913 (1,001) 1,122 30,089 79,739 Reserve for unfunded commitments 2,775 — — — 224 2,999 Total $ 33,391 $ 18,913 $ (1,001) $ 1,122 $ 30,313 $ 82,738
Schedule Credit Quality Indicators	Based on the most recent analysis performed, the risk category of loans by class of loans is as follows for the period indicated: Term Loans Amortized Cost Basis by Origination Year – As of June 30, 2021 (in thousands) 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total Commercial real estate: CRE non-owner occupied risk ratings Pass $ 89,643 $ 120,974 $ 206,093 $ 137,384 $ 246,584 $ 596,837 $ 72,393 $ — $ 1,469,908 Special Mention — — 6,191 11,613 3,667 17,202 10,760 — 49,433 Substandard — — — 1,416 568 12,931 — — 14,915 Doubtful/Loss — — — — — — — — — Total CRE non-owner occupied risk ratings $ 89,643 $ 120,974 $ 212,284 $ 150,413 $ 250,819 $ 626,970 $ 83,153 $ — $ 1,534,256 Commercial real estate: CRE owner occupied risk ratings Pass $ 89,094 $ 99,949 $ 68,668 $ 55,048 $ 55,684 $ 248,033 $ 19,755 $ — $ 636,231 Special Mention — — — 288 6,797 8,447 — — 15,532 Substandard — — 1,483 1,262 465 4,975 — — 8,185 Doubtful/Loss — — — — — — — — — Total CRE owner occupied risk ratings $ 89,094 $ 99,949 $ 70,151 $ 56,598 $ 62,946 $ 261,455 $ 19,755 $ — $ 659,948 Commercial real estate: Multifamily risk ratings Pass $ 176,116 $ 86,806 $ 113,996 $ 121,226 $ 91,054 $ 168,088 $ 24,533 $ — $ 781,819 Special Mention — 9,385 — — — 24,669 7,723 — 41,777 Substandard — — 4,334 — — 171 — — 4,505 Doubtful/Loss — — — — — — — — — Total multifamily loans $ 176,116 $ 96,191 $ 118,330 $ 121,226 $ 91,054 $ 192,928 $ 32,256 $ — $ 828,101 Commercial real estate: Farmland risk ratings Pass $ 26,440 $ 18,526 $ 21,676 $ 18,051 $ 8,397 $ 21,476 $ 44,775 $ — $ 159,341 Special Mention — — — — 1,197 3,316 1,775 — 6,288 Substandard — — 3,267 — 590 1,111 1,434 — 6,402 Doubtful/Loss — — — — — — — — — Total farmland loans $ 26,440 $ 18,526 $ 24,943 $ 18,051 $ 10,184 $ 25,903 $ 47,984 $ — $ 172,031 Consumer loans: SFR 1-4 1st DT liens risk ratings Pass $ 173,937 $ 182,911 $ 59,675 $ 39,522 $ 41,506 $ 139,178 $ — $ 4,812 $ 641,541 Special Mention — — 288 1,154 420 2,779 — 977 5,618 Substandard — — — 1,131 273 5,440 — 370 7,214 Doubtful/Loss — — — — — — — — — Total SFR 1st DT liens $ 173,937 $ 182,911 $ 59,963 $ 41,807 $ 42,199 $ 147,397 $ — $ 6,159 $ 654,373 Term Loans Amortized Cost Basis by Origination Year – As of June 30, 2021 (in thousands) 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total Consumer loans: SFR HELOCs and Junior Liens Pass $ 624 $ — $ — $ — $ — $ 242 $ 300,548 $ 11,338 $ 312,752 Special Mention — — — — — 92 4,386 884 5,362 Substandard — — — — — 17 5,460 1,536 7,013 Doubtful/Loss — — — — — — — — — Total SFR HELOCs and Junior Liens $ 624 $ — $ — $ — $ — $ 351 $ 310,394 $ 13,758 $ 325,127 Consumer loans: Other risk ratings Pass $ 12,077 $ 19,995 $ 22,680 $ 10,425 $ 2,749 $ 1,367 $ 576 $ — $ 69,869 Special Mention — 52 211 243 98 67 72 — 743 Substandard — 67 88 126 73 132 11 — 497 Doubtful/Loss — — — — — — — — — Total other consumer loans $ 12,077 $ 20,114 $ 22,979 $ 10,794 $ 2,920 $ 1,566 $ 659 $ — $ 71,109 Commercial and industrial loans: Commercial and industrial risk ratings Pass $ 202,893 $ 73,077 $ 40,966 $ 14,631 $ 9,585 $ 9,484 $ 94,260 $ 840 $ 445,736 Special Mention — 29 119 550 116 161 429 — 1,404 Substandard — — 166 102 1,011 684 2,887 79 4,929 Doubtful/Loss — — — — — — — — — Total commercial and industrial loans $ 202,893 $ 73,106 $ 41,251 $ 15,283 $ 10,712 $ 10,329 $ 97,576 $ 919 $ 452,069 Construction loans: Construction risk ratings Pass $ 17,725 $ 88,892 $ 51,436 $ 10,722 $ 2,092 $ 23,539 $ 1 $ — $ 194,407 Special Mention — — — — 346 1,460 — — 1,806 Substandard — — — — — 4,501 — — 4,501 Doubtful/Loss — — — — — — — — — Total construction loans $ 17,725 $ 88,892 $ 51,436 $ 10,722 $ 2,438 $ 29,500 $ 1 $ — $ 200,714 Agriculture production loans: Agriculture production risk ratings Pass $ 1,241 $ 1,012 $ 1,767 $ 1,189 $ 1,229 $ 1,006 $ 32,132 $ — $ 39,576 Special Mention — — — 181 — 74 2,016 — 2,271 Substandard — — — — — — 120 — 120 Doubtful/Loss — — — — — — — — — Total agriculture production loans $ 1,241 $ 1,012 $ 1,767 $ 1,370 $ 1,229 $ 1,080 $ 34,268 $ — $ 41,967 Term Loans Amortized Cost Basis by Origination Year – As of June 30, 2021 (in thousands) 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total Leases: Lease risk ratings Pass $ 5,199 $ — $ — $ — $ — $ — $ — $ — $5,199 Special Mention — — — — — — — — — Substandard — — — — — — — — — Doubtful/Loss — — — — — — — — — Total leases $ 5,199 $ — $ — $ — $ — $ — $ — $ — $ 5,199 Total loans outstanding: Risk ratings Pass $ 794,989 $ 692,142 $ 586,957 $ 408,198 $ 458,880 $ 1,209,250 $ 588,973 $ 16,990 $ 4,756,379 Special Mention — 9,466 6,809 14,029 12,641 58,267 27,161 1,861 130,234 Substandard — 67 9,338 4,037 2,980 29,962 9,912 1,985 58,281 Doubtful/Loss — — — — — — — — — Total loans outstanding $ 794,989 $ 701,675 $ 603,104 $ 426,264 $ 474,501 $ 1,297,479 $ 626,046 $ 20,836 $ 4,944,894 Term Loans Amortized Cost Basis by Origination Year – As of December 31, 2020 (in thousands) 2020 2019 2018 2017 2016 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total Commercial real estate: CRE non-owner occupied risk ratings Pass $ 120,520 $ 207,899 $ 155,730 $ 256,677 $ 179,523 $ 460,644 $ 76,730 $ — $ 1,457,723 Special Mention — 7,455 11,692 5,407 15,773 18,832 12,205 — 71,364 Substandard — — 1,449 584 2,147 2,288 — — 6,468 Doubtful/Loss — — — — — — — — — Total CRE non-owner occupied risk ratings $ 120,520 $ 215,354 $ 168,871 $ 262,668 $ 197,443 $ 481,764 $ 88,935 $ — $ 1,535,555 Commercial real estate: CRE owner occupied risk ratings Pass $ 105,896 $ 75,144 $ 53,816 $ 58,371 $ 54,541 $ 227,828 $ 25,508 $ — $ 601,104 Special Mention — — 288 7,451 2,955 6,140 — — 16,834 Substandard — 1,533 1,301 475 1,306 1,822 — — 6,437 Doubtful/Loss — — — — — — — — — Total CRE owner occupied risk ratings $ 105,896 $ 76,677 $ 55,405 $ 66,297 $ 58,802 $ 235,790 $ 25,508 $ — $ 624,375 Commercial real estate: Multifamily risk ratings Pass $ 77,646 $ 118,725 $ 113,882 $ 70,112 $ 67,457 $ 123,518 $ 19,007 $ — $ 590,347 Special Mention 9,441 — — 603 24,687 772 9,259 — 44,762 Substandard — 4,371 — — — — — — — 4,371 Doubtful/Loss — — — — — — — — — Total multifamily loans $ 87,087 $ 123,096 $ 113,882 $ 70,715 $ 92,144 $ 124,290 $ 28,266 $ — $ 639,480 Term Loans Amortized Cost Basis by Origination Year – As of December 31, 2020 (in thousands) 2020 2019 2018 2017 2016 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total Commercial real estate: Farmland risk ratings Pass $ 17,640 $ 25,003 $ 19,148 $ 12,834 $ 7,377 $ 17,129 $ 39,411 $ — $ 138,542 Special Mention — 2,567 — 1,271 227 3,107 2,258 — 9,430 Substandard — 700 — 602 — 1,214 2,004 — 4,520 Doubtful/Loss — — — — — — — — — Total farmland loans $ 17,640 $ 28,270 $ 19,148 $ 14,707 $ 7,604 $ 21,450 $ 43,673 $ — $ 152,492 Consumer loans: SFR 1-4 1st DT liens risk ratings Pass $ 183,719 $ 80,717 $ 36,342 $ 53,001 $ 46,467 $ 126,465 $ 76 $ 5,507 $ 532,294 Special Mention — 290 684 110 15 2,936 — 934 4,969 Substandard — — 1,174 929 935 5,763 — 528 9,329 Doubtful/Loss — — — — — — — — — Total SFR 1st DT liens $ 183,719 $ 81,007 $ 38,200 $ 54,040 $ 47,417 $ 135,164 $ 76 $ 6,969 $ 546,592 Consumer loans: SFR HELOCs and Junior Liens Pass $ 793 $ — $ 13 $ 360 $ 300 $ 910 $ 297,160 $ 14,051 $ 313,587 Special Mention — — 16 — — 83 4,504 789 5,392 Substandard — — — — — 39 6,698 1,768 8,505 Doubtful/Loss — — — — — — — — — Total SFR HELOCs and Junior Liens $ 793 $ — $ 29 $ 360 $ 300 $ 1,032 $ 308,362 $ 16,608 $ 327,484 Consumer loans: Other risk ratings Pass $ 25,876 $ 29,539 $ 14,170 $ 4,238 $ 1,020 $ 967 $ 986 $ — $ 76,796 Special Mention 43 208 147 74 24 65 90 — 651 Substandard 58 82 210 74 12 140 9 — 585 Doubtful/Loss — — — — — — — — — Total other consumer loans $ 25,977 $ 29,829 $ 14,527 $ 4,386 $ 1,056 $ 1,172 $ 1,085 $ — $ 78,032 Commercial and industrial loans: Commercial and industrial risk ratings Pass $ 356,701 $ 48,838 $ 20,463 $ 13,151 $ 5,185 $ 9,490 $ 65,938 $ 1,085 $ 520,851 Special Mention — 102 698 195 20 178 207 11 1,411 Substandard — 301 53 1,142 823 148 1,519 79 4,065 Doubtful/Loss — — — — — — — — — Total commercial and industrial loans $ 356,701 $ 49,241 $ 21,214 $ 14,488 $ 6,028 $ 9,816 $ 67,664 $ 1,175 $ 526,327 Term Loans Amortized Cost Basis by Origination Year – As of December 31, 2020 (in thousands) 2020 2019 2018 2017 2016 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total Construction loans: Construction risk ratings Pass 69,133 41,786 92,191 51,082 20,868 2,876 — $ — $ 277,936 Special Mention — — — 346 — 1,780 — — 2,126 Substandard — — — — 4,529 251 — — 4,780 Doubtful/Loss — — — — — — — — — Total construction loans $ 69,133 $ 41,786 $ 92,191 $ 51,428 $ 25,397 $ 4,907 $ — $ — $ 284,842 Agriculture production loans: Agriculture production risk ratings Pass $ 977 $ 2,079 $ 1,590 $ 1,838 $ 663 $ 708 $ 36,051 $ — $ 43,906 Special Mention — — 203 — 49 — — — 252 Substandard — — — — 6 — — — 6 Doubtful/Loss — — — — — — — — — Total agriculture production loans $ 977 $ 2,079 $ 1,793 $ 1,838 $ 718 $ 708 $ 36,051 $ — $ 44,164 Leases: Lease risk ratings Pass $ 3,784 $ — $ — $ — $ — $ — $ — $ — $ 3,784 Special Mention — — — — — — — — — Substandard — — — — — — — — — Doubtful/Loss — — — — — — — — — Total leases $ 3,784 $ — $ — $ — $ — $ — $ — $ — $ 3,784 Total loans outstanding: Risk ratings Pass $ 962,685 $ 629,730 $ 507,345 $ 521,664 $ 383,401 $ 970,535 $ 560,867 $ 20,643 $ 4,556,870 Special Mention 9,484 10,622 13,728 15,457 43,750 33,893 28,523 1,734 157,191 Substandard 58 6,987 4,187 3,806 9,758 11,665 10,230 2,375 49,066 Doubtful/Loss — — — — — — — — — Total loans outstanding $ 972,227 $ 647,339 $ 525,260 $ 540,927 $ 436,909 $ 1,016,093 $ 599,620 $ 24,752 $ 4,763,127
Analysis of Past Due Loans	The following table shows the ending balance of current and past due originated loans by loan category as of the date indicated: Analysis of Past Due Loans - As of June 30, 2021 (in thousands) 30-59 days 60-89 days > 90 days Total Past Current Total Commercial real estate: CRE non-owner occupied $ 337 $ 49 $ 3,919 $ 4,305 $ 1,529,951 $ 1,534,256 CRE owner occupied 28 62 412 502 659,446 659,948 Multifamily — — — — 828,101 828,101 Farmland — — 846 846 171,185 172,031 Total commercial real estate loans 365 111 5,177 5,653 3,188,683 3,194,336 Consumer: SFR 1-4 1st DT liens — — 423 423 653,950 654,373 SFR HELOCs and junior liens 694 63 1,565 2,322 322,805 325,127 Other 13 — 52 65 71,044 71,109 Total consumer loans 707 63 2,040 2,810 1,047,799 1,050,609 Commercial and industrial 250 178 160 588 451,481 452,069 Construction — — — — 200,714 200,714 Agriculture production 241 — — 241 41,726 41,967 Leases — — — — 5,199 5,199 Total $ 1,563 $ 352 $ 7,377 $ 9,292 $ 4,935,602 $ 4,944,894 Analysis of Past Due Loans - As of December 31, 2020 (in thousands) 30-59 days 60-89 days > 90 days Total Past Current Total Commercial real estate: CRE non-owner occupied $ 127 $ 173 $ 239 $ 539 $ 1,535,016 $ 1,535,555 CRE owner occupied 297 824 1,121 623,254 624,375 Multifamily — — — — 639,480 639,480 Farmland 899 — 70 969 151,523 152,492 Total commercial real estate loans 1,323 173 1,133 2,629 2,949,273 2,951,902 Consumer: SFR 1-4 1st DT liens 37 — 960 997 545,595 546,592 SFR HELOCs and junior liens 418 212 1,671 2,301 325,183 327,484 Other 41 13 100 154 77,878 78,032 Total consumer loans 496 225 2,731 3,452 948,656 952,108 Commercial and industrial 155 426 105 686 525,641 526,327 Construction — — — — 284,842 284,842 Agriculture production — — — — 44,164 44,164 Leases — — — — 3,784 3,784 Total $ 1,974 $ 824 $ 3,969 $ 6,767 $ 4,756,360 $ 4,763,127
Schedule of Non Accrual Loans	The following table shows the ending balance of non accrual loans by loan category as of the date indicated: Non Accrual Loans As of June 30, 2021 As of December 31, 2020 (in thousands) Non accrual with no allowance for credit losses Total non accrual Past due 90 days or more and still accruing Non accrual with no allowance for credit losses Total non accrual Past due 90 days or more and still accruing Commercial real estate: CRE non-owner occupied $ 8,515 $ 8,515 $ — $ 3,110 $ 3,110 $ — CRE owner occupied 3,132 5,610 — 3,111 4,061 — Multifamily 171 171 — — — — Farmland 1,346 1,346 — 1,468 1,538 — Total commercial real estate loans 13,164 15,642 — 7,689 8,709 — Consumer: SFR 1-4 1st DT liens 4,185 4,328 — 4,950 5,093 — SFR HELOCs and junior liens 3,677 4,604 — 4,480 6,148 — Other 47 114 — 68 167 — Total consumer loans 7,909 9,046 — 9,498 11,408 — Commercial and industrial 86 3,615 — 652 2,183 — Construction 4,402 4,402 — 4,546 4,546 — Agriculture production — — — 5 18 — Leases — — — — — — Sub-total 25,561 32,705 — 22,390 26,864 — Less: Guaranteed loans (608) (865) — (687) (811) Total, net $ 24,953 $ 31,840 $ — $ 21,703 $ 26,053 $ —
Amortized Cost Basis of Collateral Dependent Loans, By Class of Loan	The following tables present the amortized cost basis of collateral dependent loans by class of loans as of the following periods: As of June 30, 2021 (in thousands) Retail Office Warehouse Other Multifamily Farmland SFR -1st Deed SFR -2nd Deed Automobile/Truck A/R and Inventory Equipment Total Commercial real estate: CRE non-owner occupied $ 2,853 $ 416 $ — $ 3,918 $ — $ — $ 1,328 $ — $ — $ — $ — $ 8,515 CRE owner occupied 543 — 1,611 978 — — — — — — — 3,132 Multifamily — — — — 171 — — — — — — 171 Farmland — — — — — 1,346 — — — — — 1,346 Total commercial real estate loans 3,396 416 1,611 4,896 171 1,346 1,328 — — — — 13,164 Consumer: SFR 1-4 1st DT liens — — — — — — 4,185 — — — — 4,185 SFR HELOCs and junior liens — — — — — — 1,753 1,924 — — — 3,677 Other — — — 26 — — — — 21 — — 47 Total consumer loans — — — 26 — — 5,938 1,924 21 — — 7,909 Commercial and industrial — — — — — — — — — 43 43 86 Construction — — — — — — 4,402 — — — — 4,402 Agriculture production — — — — — — — — — — — — Leases — — — — — — — — — — — — Total $ 3,396 $ 416 $ 1,611 $ 4,922 $ 171 $ 1,346 $ 11,668 $ 1,924 $ 21 $ 43 $ 43 $ 25,561 As of December 31, 2020 (in thousands) Retail Office Warehouse Other Multifamily Farmland SFR -1st Deed SFR -2nd Deed Automobile/Truck A/R and Inventory Equipment Total Commercial real estate: CRE non-owner occupied $ 2,445 $ 435 $ — $ — $ — $ — $ — $ — $ — $ — $ — $ 2,880 CRE owner occupied 796 1,176 1,668 — — — — — — — — 3,640 Multifamily — — — — — — — — — — — — Farmland — — — — — — 1,538 — — — — — 1,538 Total commercial real estate loans 3,241 1,611 1,668 — — 1,538 — — — — — 8,058 Consumer: SFR 1-4 1st DT liens — — — — — — 5,068 — — — — 5,068 SFR HELOCs and junior liens — — — — — — 1,855 2,839 — — — 4,694 Other — — — 42 — — — — 97 — — 139 Total consumer loans — — — 42 — — 6,923 2,839 97 — — 9,901 Commercial and industrial — — — 292 — — — — — 1,173 75 1,540 Construction — — — — — — 4,546 — — — — 4,546 Agriculture production — — — — — — — — — 13 5 18 Leases — — — — — — — — — — — — Total $ 3,241 $ 1,611 $ 1,668 $ 334 $ — $ 1,538 $ 11,469 $ 2,839 $ 97 $ 1,186 $ 80 $ 24,063
Troubled Debt Restructurings	The following tables show certain information regarding TDRs that occurred during the periods indicated: TDR information for the three months ended June 30, 2021 (dollars in thousands) Number Pre-mod Post-mod Financial Number that Recorded Financial impact Commercial real estate: CRE non-owner occupied 1 $ 706 $ 706 $ 706 — $ — $ — CRE owner occupied — — — — — — — Multifamily — — — — — — — Farmland — — — — — — — Total commercial real estate loans 1 706 706 706 — — — Consumer: SFR 1-4 1st DT liens — — — — — — — SFR HELOCs and junior liens — — — — — — — Other — — — — — — — Total consumer loans — — — — — — — Commercial and industrial 2 2,000 2,000 293 — — — Construction — — — — — — — Agriculture production — — — — — — — Leases — — — — — — — Total 3 $ 2,706 $ 2,706 $ 999 — $ — $ — TDR information for the three months ended June 30, 2020 (dollars in thousands) Number Pre-mod Post-mod Financial Number that Recorded Financial impact Commercial real estate: CRE non-owner occupied — $ — $ — $ — — $ — $ — CRE owner occupied — — — — — — — Multifamily — — — — — — — Farmland — — — — — — — Total commercial real estate loans — — — — — — — Consumer: SFR 1-4 1st DT liens — — — — 1 735 — SFR HELOCs and junior liens — — — — — — — Other — — — — — — — Total consumer loans — — — — 1 735 — Commercial and industrial — — — — — — — Construction — — — — — — — Agriculture production — — — — — — — Leases — — — — — — — Total — $ — $ — $ — 1 $ 735 $ — TDR Information for the six months ended June 30, 2020 (dollars in thousands) Number Pre-mod Post-mod Financial Number that Recorded Financial impact Commercial real estate: CRE non-owner occupied 1 $ 257 $ 251 $ — — $ — $ — CRE owner occupied — — — — — — — Multifamily — — — — — — — Farmland 2 230 298 — — — — Total commercial real estate loans 3 487 549 — — — — Consumer: SFR 1-4 1st DT liens — — — — 2 1,037 — SFR HELOCs and junior liens 2 172 169 — — — — Other — — — — — — — Total consumer loans 2 172 169 — 2 1,037 — Commercial and industrial 1 21 20 21 — — — Construction — — — — — — — Agriculture production — — — — — — — Leases — — — — — — — Total 6 $ 680 $ 738 $ 21 2 $ 1,037 $ —

Leases (Tables)

Leases (Tables)	6 Months Ended
	Jun. 30, 2021
Leases [Abstract]
Components of Lease Expense	The following table presents the components of lease expense for the periods ended: Three months ended June 30, Six months ended June 30, (in thousands) 2021 2020 2021 2020 Operating lease cost $ 1,267 $ 1,291 $ 2,526 $ 2,586 Short-term lease cost 61 65 122 128 Variable lease cost (1) 1 (3) 6 Sublease income (11) (35) (24) (69) Total lease cost $ 1,316 $ 1,322 $ 2,621 $ 2,651
Supplemental Cash Flow Information Related to Leases	The following table presents supplemental cash flow information related to leases for the periods ended: Three months ended June 30, Six months ended June 30, (in thousands) 2021 2020 2021 2020 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows for operating leases $ 1,226 $ 1,243 $ 2,430 $ 2,480 ROUA obtained in exchange for operating lease liabilities $ — $ 675 $ 1,308 $ 4,068
Weighted Average Operating Lease Term And Discount Rate	The following table presents the weighted average operating lease term and discount rate as of the period ended: June 30, 2021 2020 Weighted-average remaining lease term (years) 9.8 10.3 Weighted-average discount rate 3.03 % 3.17 %
Future Expected Operating Lease Payments	At June 30, 2021, future expected operating lease payments are as follows: (in thousands) Periods ending December 31, 2021 $ 2,252 2022 4,295 2023 3,624 2024 3,352 2025 2,891 Thereafter 14,925 31,339 Discount for present value of expected cash flows (4,632) Lease liability at June 30, 2021 $ 26,707

Deposits (Tables)

Deposits (Tables)	6 Months Ended
	Jun. 30, 2021
Deposits [Abstract]
Summary of Balances of Deposits	A summary of the balances of deposits follows: (in thousands) June 30, December 31, Noninterest-bearing demand $ 2,843,783 $ 2,581,517 Interest-bearing demand 1,486,321 1,414,908 Savings 2,337,557 2,164,942 Time certificates, $250,000 or more 59,589 73,147 Other time certificates 264,803 271,420 Total deposits $ 6,992,053 $ 6,505,934

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Summary of Bank's Commitments and Contingent Liabilities	The following table presents a summary of the Bank’s commitments and contingent liabilities: (in thousands) June 30, December 31, Financial instruments whose amounts represent risk: Commitments to extend credit: Commercial loans $ 426,278 $ 462,422 Consumer loans 566,332 534,223 Real estate mortgage loans 274,339 202,306 Real estate construction loans 207,741 227,876 Standby letters of credit 14,112 15,056 Deposit account overdraft privilege 112,993 110,813

Stock Options and Other Equit_2

Stock Options and Other Equity-Based Incentive Instruments (Tables)	6 Months Ended
	Jun. 30, 2021
Share-based Payment Arrangement [Abstract]
Stock Option Activity	Stock option activity during the six months ended June 30, 2021 is summarized in the following table: Number Weighted Outstanding at December 31, 2020 128,500 $ 17.72 Options granted — — Options exercised (1,675) 16.59 Options forfeited — — Outstanding at June 30, 2021 126,825 $ 17.74
Summary of Options Outstanding	The following table shows the number, weighted-average exercise price, intrinsic value, and weighted average remaining contractual life of options exercisable, options not yet exercisable and total options outstanding as of June 30, 2021: Currently Currently Not Total Number of options 126,825 — 126,825 Weighted average exercise price $ 17.74 $ — $ 17.74 Intrinsic value (in thousands) $ 3,763 $ — $ 3,763 Weighted average remaining contractual term (yrs.) 1.5 0.0 1.5
Restricted Stock Unit (RSU) Activity	Activity related to restricted stock unit awards during the six months ended June 30, 2021 is summarized in the following table: Service Market Plus Outstanding at December 31, 2020 99,809 81,615 RSUs granted 47,029 31,479 RSUs added through dividend and performance credits 1,090 — RSUs released (42,712) — RSUs forfeited/expired (114) (75) Outstanding at June 30, 2021 105,102 113,019

Non-interest Income and Expen_2

Non-interest Income and Expense (Tables)	6 Months Ended
	Jun. 30, 2021
Other Income and Expenses [Abstract]
Components of Non-Interest Income	The following table summarizes the Company’s non-interest income for the periods indicated: Three months ended Six months ended (in thousands) 2021 2020 2021 2020 ATM and interchange fees $ 6,558 $ 5,165 $ 12,419 $ 10,276 Service charges on deposit accounts 3,462 3,046 6,731 7,092 Other service fees 914 734 1,785 1,492 Mortgage banking service fees 467 459 930 928 Change in value of mortgage servicing rights (471) (1,236) (459) (2,494) Total service charges and fees 10,930 8,168 21,406 17,294 Increase in cash value of life insurance 745 710 1,418 1,430 Asset management and commission income 947 661 1,781 1,577 Gain on sale of loans 2,847 1,736 6,094 2,627 Lease brokerage income 249 127 359 320 Sale of customer checks 116 88 235 212 Gain on sale of investment securities — — — — Gain (loss) on marketable equity securities 8 25 (45) 72 Other 115 142 819 (55) Total other non-interest income 5,027 3,489 10,661 6,183 Total non-interest income $ 15,957 $ 11,657 $ 32,067 $ 23,477
Components of Non Interest Expense	The components of non-interest expense were as follows: Three months ended Six months ended (in thousands) 2021 2020 2021 2020 Base salaries, net of deferred loan origination costs $ 17,537 $ 17,277 $ 33,048 $ 34,900 Incentive compensation 4,322 2,395 7,902 5,496 Benefits and other compensation costs 5,222 7,383 11,461 13,931 Total salaries and benefits expense 27,081 27,055 52,411 54,327 Occupancy 3,700 3,398 7,426 7,273 Data processing and software 3,201 3,657 6,403 7,024 Equipment 1,207 1,350 2,724 2,862 Intangible amortization 1,431 1,431 2,862 2,862 Advertising 734 531 1,114 1,196 ATM and POS network charges 1,551 1,210 2,797 2,583 Professional fees 1,046 741 1,640 1,444 Telecommunications 564 639 1,145 1,364 Regulatory assessments and insurance 618 360 1,230 455 Postage 124 283 322 573 Operational losses 212 184 421 405 Courier service 288 337 582 668 Gain on sale or acquisition of foreclosed assets (15) (16) (66) (57) (Gain) loss on disposal of fixed assets (426) 15 (426) 15 Other miscellaneous expense 2,855 4,375 5,204 7,306 Total other non-interest expense 17,090 18,495 33,378 35,973 Total non-interest expense $ 44,171 $ 45,550 $ 85,789 $ 90,300

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2021
Earnings Per Share [Abstract]
Computation of Earnings Per Share	Potential common shares that may be issued by the Company relate to outstanding stock options and restricted stock units (RSUs), and are determined using the treasury stock method. Earnings per share have been computed based on the following: Three months ended June 30, (in thousands) 2021 2020 Net income $ 28,362 $ 7,430 Average number of common shares outstanding 29,719 29,754 Effect of dilutive stock options and restricted stock 185 129 Average number of common shares outstanding used to calculate diluted earnings per share 29,904 29,883 Options excluded from diluted earnings per share because of their antidilutive effect — — Six months ended June 30, (in thousands) 2021 2020 Net income $ 62,011 $ 23,551 Average number of common shares outstanding 29,723 30,074 Effect of dilutive stock options and restricted stock 181 129 Average number of common shares outstanding used to calculate diluted earnings per share 29,904 30,203 Options excluded from diluted earnings per share because of their antidilutive effect — —

Comprehensive Income (Loss) (Ta

Comprehensive Income (Loss) (Tables)	6 Months Ended
	Jun. 30, 2021
Equity [Abstract]
Components of Other Comprehensive Income (Loss) and Related Tax Effects	The components of other comprehensive income and related tax effects are as follows: Three months ended June 30, Six months ended June 30, (in thousands) 2021 2020 2021 2020 Unrealized holding losses on available for sale securities before reclassifications $ 7,392 $ 34,959 $ (4,945) $ 5,398 Amounts reclassified out of AOCI: Realized gain on debt securities — — — — Unrealized holding losses on available for sale securities after reclassifications 7,392 34,959 (4,945) 5,398 Tax effect (2,186) (10,334) 1,461 (1,595) Unrealized holding losses on available for sale securities, net of tax 5,206 24,625 (3,484) 3,803 Change in unfunded status of the supplemental retirement plans before reclassifications (49) 661 (98) 1,109 Amounts reclassified out of AOCI: Amortization of prior service cost (15) (13) (29) (27) Amortization of actuarial losses 64 478 127 956 Total amounts reclassified out of accumulated other comprehensive income 49 465 98 929 Change in unfunded status of the supplemental retirement plans after reclassifications — 1,126 — 2,038 Tax effect — — — — Change in unfunded status of the supplemental retirement plans, net of tax — 1,126 — 2,038 Change in joint beneficiary agreement liability before reclassifications — — (629) — Tax effect — — — — Change in joint beneficiary agreement liability before reclassifications, net of tax — — (629) — Total other comprehensive income (loss) $ 5,206 $ 25,751 $ (4,113) $ 5,841
Components of Accumulated Other Comprehensive Loss	The components of accumulated other comprehensive income, included in shareholders’ equity, are as follows: (in thousands) June 30, December 31, Net unrealized gain on available for sale securities $ 14,238 $ 19,183 Tax effect (4,210) (5,671) Unrealized holding gain on available for sale securities, net of tax 10,028 13,512 Unfunded status of the supplemental retirement plans (1,294) (1,294) Tax effect 382 382 Unfunded status of the supplemental retirement plans, net of tax (912) (912) Joint beneficiary agreement liability (949) (320) Tax effect — — Joint beneficiary agreement liability, net of tax (949) (320) Accumulated other comprehensive income $ 8,167 $ 12,280

Fair Value Measurement (Tables)

Fair Value Measurement (Tables)	6 Months Ended
	Jun. 30, 2021
Fair Value Disclosures [Abstract]
Recorded Amount of Assets and Liabilities Measured at Fair Value on Recurring Basis	The table below presents the recorded amount of assets and liabilities measured at fair value on a recurring basis (in thousands): Fair value at June 30, 2021 Total Level 1 Level 2 Level 3 Marketable equity securities $ 2,979 $ 2,979 $ — $ — Debt securities available for sale: Obligations of U.S. government corporations and agencies 1,133,416 — 1,133,416 — Obligations of states and political subdivisions 146,924 — 146,924 — Corporate bonds 2,556 — 2,556 — Asset backed securities 564,672 — 564,672 — Loans held for sale 5,723 — 5,723 — Mortgage servicing rights 5,603 — — 5,603 Total assets measured at fair value $ 1,861,873 $ 2,979 $ 1,853,291 $ 5,603 Fair value at December 31, 2020 Total Level 1 Level 2 Level 3 Marketable equity securities $ 3,025 $ 3,025 $ — $ — Debt securities available for sale: Obligations of U.S. government corporations and agencies 812,374 — 812,374 — Obligations of states and political subdivisions 129,095 — 129,095 — Corporate bonds 2,544 — 2,544 — Asset backed securities 470,251 — 470,251 — Loans held for sale 6,268 — 6,268 — Mortgage servicing rights 5,092 — — 5,092 Total assets measured at fair value $ 1,428,649 $ 3,025 $ 1,420,532 $ 5,092
Reconciliation of Assets and Liabilities Measured at Fair Value Using Significant Unobservable Inputs (Level 3) on Recurring Basis	The following table provides a reconciliation of assets and liabilities measured at fair value using significant unobservable inputs (Level 3) on a recurring basis during the time periods indicated. Had there been any transfer into or out of Level 3 during the time periods indicated, the amount included in the “Transfers into (out of) Level 3” column would represent the beginning balance of an item in the period (interim quarter) during which it was transferred (in thousands): Three months ended June 30, Beginning Transfers Change Issuances Ending 2021: Mortgage servicing rights $ 5,607 — $ (471) $ 467 $ 5,603 2020: Mortgage servicing rights $ 5,168 — $ (1,236) $ 318 $ 4,250 Six months ended June 30, Beginning Transfers Change Issuances Ending 2021: Mortgage servicing rights $ 5,092 — $ (459) $ 970 $ 5,603 2020: Mortgage servicing rights $ 6,200 — $ (2,494) $ 544 $ 4,250
Quantitative Information about Recurring Level 3 Fair Value Measurements	The following table presents quantitative information about recurring Level 3 fair value measurements at June 30, 2021 and December 31, 2020: As of June 30, 2021: Fair Value Valuation Unobservable Range, Mortgage Servicing Rights $ 5,603 Discounted cash flow Constant prepayment rate 12% - 17%; 14.2% Discount rate 10% - 14%; 12% As of December 31, 2020: Mortgage Servicing Rights $ 5,092 Discounted cash flow Constant prepayment rate 14% - 20.0%; 17.6% Discount rate 10% - 14%; 12%
Assets and Liabilities Measured at Fair Value on Nonrecurring Basis	The tables below present the recorded investment in assets and liabilities measured at fair value on a nonrecurring basis, as of the dates indicated (in thousands): June 30, 2021 Total Level 1 Level 2 Level 3 Total Gains (Losses) Fair value: Individually evaluated loans $ 4,912 — — $ 4,912 $ (1,604) Foreclosed assets 123 — — 123 21 Total assets measured at fair value $ 5,035 $ — $ — $ 5,035 $ (1,583) December 31, 2020 Total Level 1 Level 2 Level 3 Total Gains (Losses) Fair value: Individually evaluated loans $ 1,424 — — $ 1,424 $ (1,489) Foreclosed assets 979 — — 979 155 Total assets measured at fair value $ 2,403 — — $ 2,403 $ (1,334) June 30, 2020 Total Level 1 Level 2 Level 3 Total Losses Fair value: Individually evaluated loans $ 162 — — $ 162 $ (16)
Quantitative Information about Level 3 Fair Value Measurements for Financial Instruments Measured at Fair Value on Nonrecurring Basis	The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a nonrecurring basis at June 30, 2021: June 30, 2021 Fair Value Valuation Unobservable Inputs Range, Individually evaluated loans $ 4,912 Sales comparison Adjustment for differences between Not meaningful Foreclosed assets (Residential real estate) $ 123 Sales comparison Adjustment for differences between Not meaningful The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a nonrecurring basis at December 31, 2020: December 31, 2020 Fair Value Valuation Unobservable Inputs Range, Individually evaluated loans $ 1,424 Sales comparison Adjustment for differences between Not meaningful Foreclosed assets (Residential real estate) $ 979 Sales comparison Adjustment for differences between Not meaningful
Estimated Fair Values of Financial Instruments that are Reported at Amortized Cost in Consolidated Balance Sheets	June 30, 2021 December 31, 2020 (in thousands) Carrying Fair Carrying Fair Financial assets: Level 1 inputs: Cash and due from banks $ 86,052 $ 86,052 $ 77,253 $ 77,253 Cash at Federal Reserve and other banks 553,688 553,688 592,298 592,298 Level 2 inputs: Securities held to maturity 235,778 247,019 284,563 298,726 Restricted equity securities 17,250 N/A 17,250 N/A Level 3 inputs: Loans, net 4,870,278 4,875,176 4,671,280 4,753,027 Financial liabilities: Level 2 inputs: Deposits 6,992,053 6,998,976 6,505,934 6,507,235 Other borrowings 40,559 40,559 26,914 26,914 Level 3 inputs: Junior subordinated debt 57,852 57,795 57,635 56,632 (in thousands) Contract Fair Contract Fair Off-balance sheet: Level 3 inputs: Commitments $ 1,474,690 $ 14,747 $ 1,426,827 $ 14,268 Standby letters of credit 14,112 141 15,056 151 Overdraft privilege commitments 112,993 1,129 110,813 1,108

Regulatory Matters (Tables)

Regulatory Matters (Tables)	6 Months Ended
	Jun. 30, 2021
Banking Regulation, Global Systemically Important Bank (GSIB) Surcharge [Abstract]
Actual and Required Capital Ratios of Bank	Actual Required for Capital Adequacy Purposes Required to be As of June 30, 2021: Amount Ratio Amount Ratio Amount Ratio (dollars in thousands) Total Capital (to Risk Weighted Assets): Consolidated $ 846,617 15.31 % $ 580,463 10.50 % N/A N/A Tri Counties Bank $ 835,709 15.12 % $ 580,270 10.50 % $ 552,638 10.00 % Tier 1 Capital (to Risk Weighted Assets): Consolidated $ 777,241 14.06 % $ 469,899 8.50 % N/A N/A Tri Counties Bank $ 766,377 13.87 % $ 469,743 8.50 % $ 442,111 8.00 % Common equity Tier 1 Capital (to Risk Weighted Assets): Consolidated $ 721,126 13.04 % $ 386,975 7.00 % N/A N/A Tri Counties Bank $ 766,377 13.87 % $ 386,847 7.00 % $ 359,215 6.50 % Tier 1 Capital (to Average Assets): Consolidated $ 777,241 9.85 % $ 315,578 4.00 % N/A N/A Tri Counties Bank $ 766,377 9.72 % $ 315,261 4.00 % $ 394,076 5.00 % Actual Required for Capital Adequacy Purposes Required to be As of December 31, 2020: Amount Ratio Amount Ratio Amount Ratio (dollars in thousands) Total Capital (to Risk Weighted Assets): Consolidated $ 793,433 15.22 % $ 547,352 10.50 % N/A N/A Tri Counties Bank $ 780,320 14.97 % $ 547,156 10.50 % $ 521,101 10.00 % Tier 1 Capital (to Risk Weighted Assets): Consolidated $ 727,879 13.96 % $ 443,094 8.50 % N/A N/A Tri Counties Bank $ 714,811 13.72 % $ 442,936 8.50 % $ 416,881 8.00 % Common equity Tier 1 Capital (to Risk Weighted Assets): Consolidated $ 671,975 12.89 % $ 364,901 7.00 % N/A N/A Tri Counties Bank $ 714,811 13.72 % $ 364,771 7.00 % $ 338,716 6.50 % Tier 1 Capital (to Average Assets): Consolidated $ 727,879 9.93 % $ 293,138 4.00 % N/A N/A Tri Counties Bank $ 714,811 9.76 % $ 292,949 4.00 % $ 366,186 5.00 %

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2021USD ($)trustofficecountysegment	Dec. 31, 2020USD ($)	Jun. 30, 2020USD ($)
Significant Accounting Policies [Line Items]
Number of subsidiary business trusts (in trusts) | trust	5
Number of loan production offices (in offices) | office	2
Company's investments in the trusts	$ 1,737,000
Number of business segment (in segments) | segment	1
Loans contractual past due	90 days
Held-to-maturity, allowance for credit loss	$ 0	$ 0	$ 0
Allowance for credit losses	$ 0	$ 0	$ 0
North Valley Bancorp
Significant Accounting Policies [Line Items]
Number of loan production offices (in offices) | office	3
Minimum
Significant Accounting Policies [Line Items]
Loan term	5 years
Amortization period	15 years
Maximum
Significant Accounting Policies [Line Items]
Loan term	10 years
Amortization period	30 years
California
Significant Accounting Policies [Line Items]
Number of counties (in counties) | county	28

Investment Securities - Amortiz

Investment Securities - Amortized Cost and Estimated Fair Values of Investments Securities (Detail) - USD ($)	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020
Debt Securities Available for Sale
Amortized Cost	$ 1,833,330,000	$ 1,395,081,000
Gross Unrealized Gains	20,860,000	25,225,000
Gross Unrealized Losses	(6,622,000)	(6,042,000)
Allowance for Credit Losses	0	0	$ 0
Estimated Fair Value	1,847,568,000	1,414,264,000
Debt Securities Held to Maturity
Amortized Cost	235,778,000	284,563,000
Gross Unrealized Gains	11,241,000	14,163,000
Gross Unrealized Losses	0	0
Allowance for Credit Losses	0	0	$ 0
Estimated Fair Value	247,019,000	298,726,000
Obligations of U.S. government agencies
Debt Securities Available for Sale
Amortized Cost	1,126,342,000	795,555,000
Gross Unrealized Gains	11,628,000	17,710,000
Gross Unrealized Losses	(4,554,000)	(891,000)
Allowance for Credit Losses	0	0
Estimated Fair Value	1,133,416,000	812,374,000
Debt Securities Held to Maturity
Amortized Cost	226,925,000	273,667,000
Gross Unrealized Gains	10,926,000	13,774,000
Gross Unrealized Losses	0	0
Allowance for Credit Losses	0	0
Estimated Fair Value	237,851,000	287,441,000
Obligations of states and political subdivisions
Debt Securities Available for Sale
Amortized Cost	141,168,000	123,347,000
Gross Unrealized Gains	6,208,000	5,748,000
Gross Unrealized Losses	(452,000)	0
Allowance for Credit Losses	0	0
Estimated Fair Value	146,924,000	129,095,000
Debt Securities Held to Maturity
Amortized Cost	8,853,000	10,896,000
Gross Unrealized Gains	315,000	389,000
Gross Unrealized Losses	0	0
Allowance for Credit Losses	0	0
Estimated Fair Value	9,168,000	11,285,000
Corporate bonds
Debt Securities Available for Sale
Amortized Cost	2,473,000	2,459,000
Gross Unrealized Gains	83,000	85,000
Gross Unrealized Losses	0	0
Allowance for Credit Losses	0	0
Estimated Fair Value	2,556,000	2,544,000
Asset backed securities
Debt Securities Available for Sale
Amortized Cost	563,347,000	473,720,000
Gross Unrealized Gains	2,941,000	1,682,000
Gross Unrealized Losses	(1,616,000)	(5,151,000)
Allowance for Credit Losses	0	0
Estimated Fair Value	$ 564,672,000	$ 470,251,000

Investment Securities - Additio

Investment Securities - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2021USD ($)investmentSecurity	Dec. 31, 2020USD ($)	Jun. 30, 2020USD ($)
Investment Securities [Line Items]
Securities pledged as collateral	$ 456,446,000	$ 429,049,000
Residential real estate mortgage-backed securities	$ 1,104,406,000,000
Life of mortgage-backed securities	4 years 2 months 15 days
Impairment losses recognized	$ 0
Allowance for Credit Losses	0	0	$ 0
Obligations of U.S. government agencies
Investment Securities [Line Items]
Allowance for Credit Losses	$ 0	0
Number of available for sale securities in unrealized loss position (in investment securities) | investmentSecurity	32
Percentage of aggregate depreciation in unrealized losses	0.80%
Obligations of states and political subdivisions
Investment Securities [Line Items]
Allowance for Credit Losses	$ 0	0
Number of available for sale securities in unrealized loss position (in investment securities) | investmentSecurity	6
Percentage of aggregate depreciation in unrealized losses	1.83%
Asset backed securities
Investment Securities [Line Items]
Allowance for Credit Losses	$ 0	$ 0
Number of available for sale securities in unrealized loss position (in investment securities) | investmentSecurity	18
Percentage of aggregate depreciation in unrealized losses	0.63%

Investment Securities - Amort_2

Investment Securities - Amortized Cost and Estimated Fair Value of Debt Securities by Contractual Maturity (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Amortized Cost
Due in one year	$ 1,093
Due after one year through five years	181,624
Due after five years through ten years	337,145
Due after ten years	1,313,468
Amortized Cost	1,833,330	$ 1,395,081
Estimated Fair Value
Due in one year	1,117
Due after one year through five years	181,791
Due after five years through ten years	338,985
Due after ten years	1,325,675
Totals	1,847,568	1,414,264
Amortized Cost
Due in one year	0
Due after one year through five years	1,011
Due after five years through ten years	20,641
Due after ten years	214,126
Totals	235,778	284,563
Estimated Fair Value
Due in one year	0
Due after one year through five years	1,125
Due after five years through ten years	21,363
Due after ten years	224,531
Totals	$ 247,019	$ 298,726

Investment Securities - Gross U

Investment Securities - Gross Unrealized Losses on Debt Securities (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available for Sale, Less than 12 Months, Fair Value	$ 693,862	$ 212,087
Debt Securities, Available for Sale, Less than 12 Months, Unrealized Loss	(5,400)	(1,332)
Debt Securities, Available for Sale, 12 Months or more, Fair Value	152,895	297,020
Debt Securities, Available for Sale, 12 Months or more, Unrealized Loss	(1,222)	(4,710)
Debt Securities, Available for Sale, Fair Value	846,757	509,107
Debt Securities, Available-for-sale, Unrealized Loss	(6,622)	(6,042)
Obligations of U.S. government agencies
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available for Sale, Less than 12 Months, Fair Value	566,137	160,543
Debt Securities, Available for Sale, Less than 12 Months, Unrealized Loss	(4,554)	(891)
Debt Securities, Available for Sale, 12 Months or more, Fair Value	0	0
Debt Securities, Available for Sale, 12 Months or more, Unrealized Loss	0	0
Debt Securities, Available for Sale, Fair Value	566,137	160,543
Debt Securities, Available-for-sale, Unrealized Loss	(4,554)	(891)
Obligations of states and political subdivisions
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available for Sale, Less than 12 Months, Fair Value	24,207
Debt Securities, Available for Sale, Less than 12 Months, Unrealized Loss	(452)
Debt Securities, Available for Sale, 12 Months or more, Fair Value	0
Debt Securities, Available for Sale, 12 Months or more, Unrealized Loss	0
Debt Securities, Available for Sale, Fair Value	24,207
Debt Securities, Available-for-sale, Unrealized Loss	(452)
Asset backed securities
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available for Sale, Less than 12 Months, Fair Value	103,518	51,544
Debt Securities, Available for Sale, Less than 12 Months, Unrealized Loss	(394)	(441)
Debt Securities, Available for Sale, 12 Months or more, Fair Value	152,895	297,020
Debt Securities, Available for Sale, 12 Months or more, Unrealized Loss	(1,222)	(4,710)
Debt Securities, Available for Sale, Fair Value	256,413	348,564
Debt Securities, Available-for-sale, Unrealized Loss	$ (1,616)	$ (5,151)

Investment Securities - Amort_3

Investment Securities - Amortized Cost of Debt Securities Held-to-Maturity (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]
Amortized cost, held to maturity	$ 235,778	$ 284,563
AAA/AA/A
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]
Amortized cost, held to maturity	235,778	284,563
BBB/BB/B
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]
Amortized cost, held to maturity	0	0
Obligations of U.S. government agencies | AAA/AA/A
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]
Amortized cost, held to maturity	226,925	273,667
Obligations of U.S. government agencies | BBB/BB/B
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]
Amortized cost, held to maturity	0	0
Obligations of states and political subdivisions | AAA/AA/A
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]
Amortized cost, held to maturity	8,853	10,896
Obligations of states and political subdivisions | BBB/BB/B
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]
Amortized cost, held to maturity	$ 0	$ 0

Loans - Summary of Loan Balance

Loans - Summary of Loan Balances (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Loans and Leases Receivable Disclosure [Line Items]
Total	$ 4,944,894		$ 4,763,127
Total principal balance of loans owed, net of charge-offs	4,984,824		4,805,596
Unamortized net deferred loan fees	(19,843)		(16,984)
Discounts to principal balance of loans owed, net of charge-offs	(20,087)		(25,485)
Allowance for loan losses	(86,062)	$ (85,941)	(91,847)	$ (79,739)	$ (57,911)	$ (30,616)
Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Total	3,194,336		2,951,902
Allowance for loan losses	(51,637)	(50,403)	(53,693)	(44,850)	(29,253)	(11,995)
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Total	1,050,609		952,108
Allowance for loan losses	(23,950)	(24,604)	(25,148)	(23,165)	(19,592)	(10,084)
Commercial and industrial
Loans and Leases Receivable Disclosure [Line Items]
Total	452,069		526,327
Allowance for loan losses	(4,511)	(4,464)	(4,252)	(4,018)	(3,867)	(4,867)
Construction
Loans and Leases Receivable Disclosure [Line Items]
Total	200,714		284,842
Allowance for loan losses	(4,951)	(5,476)	(7,540)	(6,775)	(4,595)	(3,388)
Agriculture production
Loans and Leases Receivable Disclosure [Line Items]
Total	41,967		44,164
Allowance for loan losses	(1,007)	(988)	(1,209)	(919)	(593)	(261)
Leases
Loans and Leases Receivable Disclosure [Line Items]
Total	5,199		3,784
Allowance for loan losses	(6)	(6)	(5)	(12)	(11)	(21)
CRE non-owner occupied | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Total	1,534,256		1,535,555
Allowance for loan losses	(26,028)	(26,434)	(29,380)	(26,091)	(18,034)	(5,948)
CRE owner occupied | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Total	659,948		624,375
Allowance for loan losses	(10,463)	(9,874)	(10,861)	(8,710)	(5,366)	(2,027)
Multifamily | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Total	828,101		639,480
Allowance for loan losses	(13,196)	(12,371)	(11,472)	(8,581)	(5,140)	(3,352)
Farmland | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Total	172,031		152,492
Allowance for loan losses	(1,950)	(1,724)	(1,980)	(1,468)	(713)	(668)
SFR 1-4 1st DT liens | Consumer
Loans and Leases Receivable Disclosure [Line Items]
Total	654,373		546,592
SFR HELOCs and junior liens | Consumer
Loans and Leases Receivable Disclosure [Line Items]
Total	325,127		327,484
Allowance for loan losses	(10,701)	(11,079)	(11,771)	(12,108)	(11,196)	(6,183)
Other | Consumer
Loans and Leases Receivable Disclosure [Line Items]
Total	71,109		78,032
Allowance for loan losses	$ (2,620)	$ (2,860)	$ (3,260)	$ (3,042)	$ (2,746)	$ (1,595)

Loans - Narrative (Details)

Loans - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 4,944,894		$ 4,944,894		$ 4,763,127
Loan balance, before allowance for credit loss and fee	4,984,824		4,984,824		4,805,596
Deferred loan fees	19,843		19,843		16,984
Loans, including fees	60,304	$ 58,409	120,740	$ 114,667
Commercial and industrial
Loans and Leases Receivable Disclosure [Line Items]
Loans	452,069		452,069		526,327
Payment Protection Program (PPP)
Loans and Leases Receivable Disclosure [Line Items]
Loan balance, before allowance for credit loss and fee	640,410		640,410
Payment Protection Program (PPP) | Commercial and industrial
Loans and Leases Receivable Disclosure [Line Items]
Loans	248,582		248,582
Deferred loan fees	25,299		25,299
Deferred loan costs	1,245		1,245
Deferred fee accretion	8,990		8,990		$ 7,212
Loans, including fees	$ 2,344	$ 2,356	$ 7,304	$ 2,356

Allowance for Credit Losses - S

Allowance for Credit Losses - Summary of Activity in Allowance for Loan Losses (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 85,941	$ 57,911	$ 91,847	$ 30,616	$ 30,616
Charge-offs	(387)		(613)	(1,001)	(1,755)
Recoveries	653	230	1,213	1,122	1,885
Provision (benefit)	(145)	22,089	(6,385)	30,089	42,188
Ending balance	86,062	79,739	86,062	79,739	91,847
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance	3,580	2,845	3,400	2,775	2,775
Charge-offs	0		0	0	0
Recoveries	0	0	0	0	0
Provision (benefit)	(115)	154	65	224	625
Ending balance	3,465	2,999	3,465	2,999	3,400
Credit Loss [Roll Forward]
Beginning balance	89,521	60,756	95,247	33,391	33,391
Charge-offs	(387)		(613)	(1,001)	(1,755)
Recoveries	653	230	1,213	1,122	1,885
Provision (benefit)	(260)	22,243	(6,320)	30,313	42,813
Ending balance	89,527	82,738	89,527	82,738	95,247
Impact of CECL Adoption
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				18,913	18,913
Charge-offs		(491)
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance				0	0
Charge-offs		0
Credit Loss [Roll Forward]
Beginning balance				18,913	18,913
Charge-offs		(491)
Commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	50,403	29,253	53,693	11,995	11,995
Charge-offs	0	0	0	0	(182)
Recoveries	0	9	3	202	226
Provision (benefit)	1,234	15,588	(2,059)	20,805	29,806
Ending balance	51,637	44,850	51,637	44,850	53,693
Commercial real estate | Impact of CECL Adoption
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				11,848	11,848
Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	24,604	19,592	25,148	10,084	10,084
Charge-offs	(86)	(277)	(279)	(407)	(799)
Recoveries	572	166	973	719	1,067
Provision (benefit)	(1,140)	3,684	(1,892)	4,485	6,512
Ending balance	23,950	23,165	23,950	23,165	25,148
Consumer | Impact of CECL Adoption
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				8,284	8,284
Commercial and industrial
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	4,464	3,867	4,252	4,867	4,867
Charge-offs	(301)	(214)	(334)	(594)	(774)
Recoveries	79	55	215	181	568
Provision (benefit)	269	310	378	1,525	1,552
Ending balance	4,511	4,018	4,511	4,018	4,252
Commercial and industrial | Impact of CECL Adoption
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				(1,961)	(1,961)
Construction
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	5,476	4,595	7,540	3,388	3,388
Charge-offs	0	0	0	0	0
Recoveries	0	0	0	0	0
Provision (benefit)	(525)	2,180	(2,589)	2,454	3,219
Ending balance	4,951	6,775	4,951	6,775	7,540
Construction | Impact of CECL Adoption
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				933	933
Agriculture production
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	988	593	1,209	261	261
Charge-offs	0	0	0	0	0
Recoveries	2	0	22	20	24
Provision (benefit)	17	326	(224)	817	1,103
Ending balance	1,007	919	1,007	919	1,209
Agriculture production | Impact of CECL Adoption
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				(179)	(179)
Leases
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	6	11	5	21	21
Charge-offs	0	0	0	0	0
Recoveries	0	0	0	0	0
Provision (benefit)	0	1	1	3	(4)
Ending balance	6	12	6	12	5
Leases | Impact of CECL Adoption
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				(12)	(12)
CRE non-owner occupied | Commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	26,434	18,034	29,380	5,948	5,948
Charge-offs	0	0	0	0	0
Recoveries	0	5	2	193	198
Provision (benefit)	(406)	8,052	(3,354)	13,249	16,533
Ending balance	26,028	26,091	26,028	26,091	29,380
CRE non-owner occupied | Commercial real estate | Impact of CECL Adoption
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				6,701	6,701
CRE owner occupied | Commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	9,874	5,366	10,861	2,027	2,027
Charge-offs	0	0	0	0	0
Recoveries	0	4	1	9	28
Provision (benefit)	589	3,340	(399)	4,393	6,525
Ending balance	10,463	8,710	10,463	8,710	10,861
CRE owner occupied | Commercial real estate | Impact of CECL Adoption
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				2,281	2,281
Multifamily | Commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	12,371	5,140	11,472	3,352	3,352
Charge-offs	0	0	0	0	0
Recoveries	0	0	0	0	0
Provision (benefit)	825	3,441	1,724	2,948	5,839
Ending balance	13,196	8,581	13,196	8,581	11,472
Multifamily | Commercial real estate | Impact of CECL Adoption
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				2,281	2,281
Farmland | Commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,724	713	1,980	668	668
Charge-offs	0	0	0	0	(182)
Recoveries	0	0	0	0	0
Provision (benefit)	226	755	(30)	215	909
Ending balance	1,950	1,468	1,950	1,468	1,980
Farmland | Commercial real estate | Impact of CECL Adoption
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				585	585
SFR 1-4 1st DT liens | Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	10,665	5,650	10,117	2,306	2,306
Charge-offs	0	(11)	0	(11)	(13)
Recoveries	1	2	11	412	416
Provision (benefit)	(37)	2,374	501	2,633	4,733
Ending balance	10,629	8,015	10,629	8,015	10,117
SFR 1-4 1st DT liens | Consumer | Impact of CECL Adoption
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				2,675	2,675
SFR HELOCs and junior liens | Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	11,079	11,196	11,771	6,183	6,183
Charge-offs	0	(23)	0	(23)	(116)
Recoveries	512	92	797	140	304
Provision (benefit)	(890)	843	(1,867)	1,170	762
Ending balance	10,701	12,108	10,701	12,108	11,771
SFR HELOCs and junior liens | Consumer | Impact of CECL Adoption
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				4,638	4,638
Other | Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	2,860	2,746	3,260	1,595	1,595
Charge-offs	(86)	(243)	(279)	(373)	(670)
Recoveries	59	72	165	167	347
Provision (benefit)	(213)	467	(526)	682	1,017
Ending balance	$ 2,620	$ 3,042	$ 2,620	3,042	3,260
Other | Consumer | Impact of CECL Adoption
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance				$ 971	$ 971

Allowance for Credit Losses - A

Allowance for Credit Losses - Additional Information (Detail) - USD ($) $ in Thousands	Jan. 01, 2020	Dec. 31, 2019	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Loans and Leases Receivable Disclosure [Line Items]
Allowance for credit loss		$ 30,616	$ 86,062	$ 79,739	$ 86,062	$ 79,739	$ 85,941	$ 91,847	$ 57,911
Cumulative effect adjustment, decrease in retained earnings		906,570	966,780	885,686	966,780	885,686	942,539	925,114	866,426
Threshold for loan analysis			1,000		1,000
ASU 2016-13
Loans and Leases Receivable Disclosure [Line Items]
Allowance for credit loss	$ 18,913
Reclassification of financing receivable	$ 481
Retained Earnings
Loans and Leases Receivable Disclosure [Line Items]
Cumulative effect adjustment, decrease in retained earnings		367,794	427,575	354,645	427,575	354,645	$ 408,211	$ 381,999	$ 356,935
Impact of CECL Adoption
Loans and Leases Receivable Disclosure [Line Items]
Allowance for credit loss		18,913
Tax portion of cumulative effect adjustment		5,449
Cumulative effect adjustment, decrease in retained earnings		(12,983)
Impact of CECL Adoption | Retained Earnings
Loans and Leases Receivable Disclosure [Line Items]
Cumulative effect adjustment, decrease in retained earnings		$ (12,983)
Financial Asset Originated
Loans and Leases Receivable Disclosure [Line Items]
Interest lost on nonaccrual loans			524	428	1,060	859
Interest income on nonaccrual loans			$ 159	$ 39	$ 176	$ 86

Allowance for Credit Losses -_2

Allowance for Credit Losses - Schedule Credit Quality Indicators (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	$ 794,989	$ 972,227
Fiscal year before latest fiscal year	701,675	647,339
Two years before latest fiscal year	603,104	525,260
Three years before latest fiscal year	426,264	540,927
Four years before latest fiscal year	474,501	436,909
Prior	1,297,479	1,016,093
Revolving Loans Amortized Cost Basis	626,046	599,620
Revolving Loans Converted to Term	20,836	24,752
Total	4,944,894	4,763,127
Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Total	3,194,336	2,951,902
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Total	1,050,609	952,108
Commercial and industrial
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	202,893	356,701
Fiscal year before latest fiscal year	73,106	49,241
Two years before latest fiscal year	41,251	21,214
Three years before latest fiscal year	15,283	14,488
Four years before latest fiscal year	10,712	6,028
Prior	10,329	9,816
Revolving Loans Amortized Cost Basis	97,576	67,664
Revolving Loans Converted to Term	919	1,175
Total	452,069	526,327
Construction
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	17,725	69,133
Fiscal year before latest fiscal year	88,892	41,786
Two years before latest fiscal year	51,436	92,191
Three years before latest fiscal year	10,722	51,428
Four years before latest fiscal year	2,438	25,397
Prior	29,500	4,907
Revolving Loans Amortized Cost Basis	1	0
Revolving Loans Converted to Term	0	0
Total	200,714	284,842
Agriculture production
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	1,241	977
Fiscal year before latest fiscal year	1,012	2,079
Two years before latest fiscal year	1,767	1,793
Three years before latest fiscal year	1,370	1,838
Four years before latest fiscal year	1,229	718
Prior	1,080	708
Revolving Loans Amortized Cost Basis	34,268	36,051
Revolving Loans Converted to Term	0	0
Total	41,967	44,164
Leases
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	5,199	3,784
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	5,199	3,784
CRE non-owner occupied | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	89,643	120,520
Fiscal year before latest fiscal year	120,974	215,354
Two years before latest fiscal year	212,284	168,871
Three years before latest fiscal year	150,413	262,668
Four years before latest fiscal year	250,819	197,443
Prior	626,970	481,764
Revolving Loans Amortized Cost Basis	83,153	88,935
Revolving Loans Converted to Term	0	0
Total	1,534,256	1,535,555
CRE owner occupied | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	89,094	105,896
Fiscal year before latest fiscal year	99,949	76,677
Two years before latest fiscal year	70,151	55,405
Three years before latest fiscal year	56,598	66,297
Four years before latest fiscal year	62,946	58,802
Prior	261,455	235,790
Revolving Loans Amortized Cost Basis	19,755	25,508
Revolving Loans Converted to Term	0	0
Total	659,948	624,375
Multifamily | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	176,116	87,087
Fiscal year before latest fiscal year	96,191	123,096
Two years before latest fiscal year	118,330	113,882
Three years before latest fiscal year	121,226	70,715
Four years before latest fiscal year	91,054	92,144
Prior	192,928	124,290
Revolving Loans Amortized Cost Basis	32,256	28,266
Revolving Loans Converted to Term	0	0
Total	828,101	639,480
Farmland | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	26,440	17,640
Fiscal year before latest fiscal year	18,526	28,270
Two years before latest fiscal year	24,943	19,148
Three years before latest fiscal year	18,051	14,707
Four years before latest fiscal year	10,184	7,604
Prior	25,903	21,450
Revolving Loans Amortized Cost Basis	47,984	43,673
Revolving Loans Converted to Term	0	0
Total	172,031	152,492
SFR 1-4 1st DT liens | Consumer
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	173,937	183,719
Fiscal year before latest fiscal year	182,911	81,007
Two years before latest fiscal year	59,963	38,200
Three years before latest fiscal year	41,807	54,040
Four years before latest fiscal year	42,199	47,417
Prior	147,397	135,164
Revolving Loans Amortized Cost Basis	0	76
Revolving Loans Converted to Term	6,159	6,969
Total	654,373	546,592
SFR HELOCs and junior liens | Consumer
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	624	793
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	29
Three years before latest fiscal year	0	360
Four years before latest fiscal year	0	300
Prior	351	1,032
Revolving Loans Amortized Cost Basis	310,394	308,362
Revolving Loans Converted to Term	13,758	16,608
Total	325,127	327,484
Other | Consumer
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	12,077	25,977
Fiscal year before latest fiscal year	20,114	29,829
Two years before latest fiscal year	22,979	14,527
Three years before latest fiscal year	10,794	4,386
Four years before latest fiscal year	2,920	1,056
Prior	1,566	1,172
Revolving Loans Amortized Cost Basis	659	1,085
Revolving Loans Converted to Term	0	0
Total	71,109	78,032
Pass
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	794,989	962,685
Fiscal year before latest fiscal year	692,142	629,730
Two years before latest fiscal year	586,957	507,345
Three years before latest fiscal year	408,198	521,664
Four years before latest fiscal year	458,880	383,401
Prior	1,209,250	970,535
Revolving Loans Amortized Cost Basis	588,973	560,867
Revolving Loans Converted to Term	16,990	20,643
Total	4,756,379	4,556,870
Pass | Commercial and industrial
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	202,893	356,701
Fiscal year before latest fiscal year	73,077	48,838
Two years before latest fiscal year	40,966	20,463
Three years before latest fiscal year	14,631	13,151
Four years before latest fiscal year	9,585	5,185
Prior	9,484	9,490
Revolving Loans Amortized Cost Basis	94,260	65,938
Revolving Loans Converted to Term	840	1,085
Total	445,736	520,851
Pass | Construction
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	17,725	69,133
Fiscal year before latest fiscal year	88,892	41,786
Two years before latest fiscal year	51,436	92,191
Three years before latest fiscal year	10,722	51,082
Four years before latest fiscal year	2,092	20,868
Prior	23,539	2,876
Revolving Loans Amortized Cost Basis	1	0
Revolving Loans Converted to Term	0	0
Total	194,407	277,936
Pass | Agriculture production
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	1,241	977
Fiscal year before latest fiscal year	1,012	2,079
Two years before latest fiscal year	1,767	1,590
Three years before latest fiscal year	1,189	1,838
Four years before latest fiscal year	1,229	663
Prior	1,006	708
Revolving Loans Amortized Cost Basis	32,132	36,051
Revolving Loans Converted to Term	0	0
Total	39,576	43,906
Pass | Leases
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	5,199	3,784
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	5,199	3,784
Pass | CRE non-owner occupied | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	89,643	120,520
Fiscal year before latest fiscal year	120,974	207,899
Two years before latest fiscal year	206,093	155,730
Three years before latest fiscal year	137,384	256,677
Four years before latest fiscal year	246,584	179,523
Prior	596,837	460,644
Revolving Loans Amortized Cost Basis	72,393	76,730
Revolving Loans Converted to Term	0	0
Total	1,469,908	1,457,723
Pass | CRE owner occupied | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	89,094	105,896
Fiscal year before latest fiscal year	99,949	75,144
Two years before latest fiscal year	68,668	53,816
Three years before latest fiscal year	55,048	58,371
Four years before latest fiscal year	55,684	54,541
Prior	248,033	227,828
Revolving Loans Amortized Cost Basis	19,755	25,508
Revolving Loans Converted to Term	0	0
Total	636,231	601,104
Pass | Multifamily | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	176,116	77,646
Fiscal year before latest fiscal year	86,806	118,725
Two years before latest fiscal year	113,996	113,882
Three years before latest fiscal year	121,226	70,112
Four years before latest fiscal year	91,054	67,457
Prior	168,088	123,518
Revolving Loans Amortized Cost Basis	24,533	19,007
Revolving Loans Converted to Term	0	0
Total	781,819	590,347
Pass | Farmland | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	26,440	17,640
Fiscal year before latest fiscal year	18,526	25,003
Two years before latest fiscal year	21,676	19,148
Three years before latest fiscal year	18,051	12,834
Four years before latest fiscal year	8,397	7,377
Prior	21,476	17,129
Revolving Loans Amortized Cost Basis	44,775	39,411
Revolving Loans Converted to Term	0	0
Total	159,341	138,542
Pass | SFR 1-4 1st DT liens | Consumer
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	173,937	183,719
Fiscal year before latest fiscal year	182,911	80,717
Two years before latest fiscal year	59,675	36,342
Three years before latest fiscal year	39,522	53,001
Four years before latest fiscal year	41,506	46,467
Prior	139,178	126,465
Revolving Loans Amortized Cost Basis	0	76
Revolving Loans Converted to Term	4,812	5,507
Total	641,541	532,294
Pass | SFR HELOCs and junior liens | Consumer
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	624	793
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	13
Three years before latest fiscal year	0	360
Four years before latest fiscal year	0	300
Prior	242	910
Revolving Loans Amortized Cost Basis	300,548	297,160
Revolving Loans Converted to Term	11,338	14,051
Total	312,752	313,587
Pass | Other | Consumer
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	12,077	25,876
Fiscal year before latest fiscal year	19,995	29,539
Two years before latest fiscal year	22,680	14,170
Three years before latest fiscal year	10,425	4,238
Four years before latest fiscal year	2,749	1,020
Prior	1,367	967
Revolving Loans Amortized Cost Basis	576	986
Revolving Loans Converted to Term	0	0
Total	69,869	76,796
Special Mention
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	9,484
Fiscal year before latest fiscal year	9,466	10,622
Two years before latest fiscal year	6,809	13,728
Three years before latest fiscal year	14,029	15,457
Four years before latest fiscal year	12,641	43,750
Prior	58,267	33,893
Revolving Loans Amortized Cost Basis	27,161	28,523
Revolving Loans Converted to Term	1,861	1,734
Total	130,234	157,191
Special Mention | Commercial and industrial
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	0
Fiscal year before latest fiscal year	29	102
Two years before latest fiscal year	119	698
Three years before latest fiscal year	550	195
Four years before latest fiscal year	116	20
Prior	161	178
Revolving Loans Amortized Cost Basis	429	207
Revolving Loans Converted to Term	0	11
Total	1,404	1,411
Special Mention | Construction
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	346
Four years before latest fiscal year	346	0
Prior	1,460	1,780
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	1,806	2,126
Special Mention | Agriculture production
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	203
Three years before latest fiscal year	181	0
Four years before latest fiscal year	0	49
Prior	74	0
Revolving Loans Amortized Cost Basis	2,016	0
Revolving Loans Converted to Term	0	0
Total	2,271	252
Special Mention | Leases
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	0
Special Mention | CRE non-owner occupied | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	7,455
Two years before latest fiscal year	6,191	11,692
Three years before latest fiscal year	11,613	5,407
Four years before latest fiscal year	3,667	15,773
Prior	17,202	18,832
Revolving Loans Amortized Cost Basis	10,760	12,205
Revolving Loans Converted to Term	0	0
Total	49,433	71,364
Special Mention | CRE owner occupied | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	288
Three years before latest fiscal year	288	7,451
Four years before latest fiscal year	6,797	2,955
Prior	8,447	6,140
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	15,532	16,834
Special Mention | Multifamily | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	9,441
Fiscal year before latest fiscal year	9,385	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	603
Four years before latest fiscal year	0	24,687
Prior	24,669	772
Revolving Loans Amortized Cost Basis	7,723	9,259
Revolving Loans Converted to Term	0	0
Total	41,777	44,762
Special Mention | Farmland | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	2,567
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	1,271
Four years before latest fiscal year	1,197	227
Prior	3,316	3,107
Revolving Loans Amortized Cost Basis	1,775	2,258
Revolving Loans Converted to Term	0	0
Total	6,288	9,430
Special Mention | SFR 1-4 1st DT liens | Consumer
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	290
Two years before latest fiscal year	288	684
Three years before latest fiscal year	1,154	110
Four years before latest fiscal year	420	15
Prior	2,779	2,936
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	977	934
Total	5,618	4,969
Special Mention | SFR HELOCs and junior liens | Consumer
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	16
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	92	83
Revolving Loans Amortized Cost Basis	4,386	4,504
Revolving Loans Converted to Term	884	789
Total	5,362	5,392
Special Mention | Other | Consumer
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	43
Fiscal year before latest fiscal year	52	208
Two years before latest fiscal year	211	147
Three years before latest fiscal year	243	74
Four years before latest fiscal year	98	24
Prior	67	65
Revolving Loans Amortized Cost Basis	72	90
Revolving Loans Converted to Term	0	0
Total	743	651
Substandard
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	58
Fiscal year before latest fiscal year	67	6,987
Two years before latest fiscal year	9,338	4,187
Three years before latest fiscal year	4,037	3,806
Four years before latest fiscal year	2,980	9,758
Prior	29,962	11,665
Revolving Loans Amortized Cost Basis	9,912	10,230
Revolving Loans Converted to Term	1,985	2,375
Total	58,281	49,066
Substandard | Commercial and industrial
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	301
Two years before latest fiscal year	166	53
Three years before latest fiscal year	102	1,142
Four years before latest fiscal year	1,011	823
Prior	684	148
Revolving Loans Amortized Cost Basis	2,887	1,519
Revolving Loans Converted to Term	79	79
Total	4,929	4,065
Substandard | Construction
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	4,529
Prior	4,501	251
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	4,501	4,780
Substandard | Agriculture production
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	6
Prior	0	0
Revolving Loans Amortized Cost Basis	120	0
Revolving Loans Converted to Term	0	0
Total	120	6
Substandard | Leases
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	0
Substandard | CRE non-owner occupied | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	1,449
Three years before latest fiscal year	1,416	584
Four years before latest fiscal year	568	2,147
Prior	12,931	2,288
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	14,915	6,468
Substandard | CRE owner occupied | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	1,533
Two years before latest fiscal year	1,483	1,301
Three years before latest fiscal year	1,262	475
Four years before latest fiscal year	465	1,306
Prior	4,975	1,822
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	8,185	6,437
Substandard | Multifamily | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	4,371
Two years before latest fiscal year	4,334	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	171	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	4,505	4,371
Substandard | Farmland | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	700
Two years before latest fiscal year	3,267	0
Three years before latest fiscal year	0	602
Four years before latest fiscal year	590	0
Prior	1,111	1,214
Revolving Loans Amortized Cost Basis	1,434	2,004
Revolving Loans Converted to Term	0	0
Total	6,402	4,520
Substandard | SFR 1-4 1st DT liens | Consumer
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	1,174
Three years before latest fiscal year	1,131	929
Four years before latest fiscal year	273	935
Prior	5,440	5,763
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	370	528
Total	7,214	9,329
Substandard | SFR HELOCs and junior liens | Consumer
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	17	39
Revolving Loans Amortized Cost Basis	5,460	6,698
Revolving Loans Converted to Term	1,536	1,768
Total	7,013	8,505
Substandard | Other | Consumer
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	58
Fiscal year before latest fiscal year	67	82
Two years before latest fiscal year	88	210
Three years before latest fiscal year	126	74
Four years before latest fiscal year	73	12
Prior	132	140
Revolving Loans Amortized Cost Basis	11	9
Revolving Loans Converted to Term	0	0
Total	497	585
Doubtful/Loss
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	0
Doubtful/Loss | Commercial and industrial
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	0
Doubtful/Loss | Construction
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	0
Doubtful/Loss | Agriculture production
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	0
Doubtful/Loss | Leases
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	0
Doubtful/Loss | CRE non-owner occupied | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	0
Doubtful/Loss | CRE owner occupied | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	0
Doubtful/Loss | Multifamily | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	0
Doubtful/Loss | Farmland | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	0
Doubtful/Loss | SFR 1-4 1st DT liens | Consumer
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	0
Doubtful/Loss | SFR HELOCs and junior liens | Consumer
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	0	0
Doubtful/Loss | Other | Consumer
Loans and Leases Receivable Disclosure [Line Items]
Current fiscal year	0	0
Fiscal year before latest fiscal year	0	0
Two years before latest fiscal year	0	0
Three years before latest fiscal year	0	0
Four years before latest fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	$ 0	$ 0

Allowance for Credit Losses -_3

Allowance for Credit Losses - Analysis of Past Due and Nonaccrual Loans (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Total	$ 4,944,894	$ 4,763,127
Commercial real estate
Financing Receivable, Past Due [Line Items]
Total	3,194,336	2,951,902
Consumer
Financing Receivable, Past Due [Line Items]
Total	1,050,609	952,108
Commercial and industrial
Financing Receivable, Past Due [Line Items]
Total	452,069	526,327
Construction
Financing Receivable, Past Due [Line Items]
Total	200,714	284,842
Agriculture production
Financing Receivable, Past Due [Line Items]
Total	41,967	44,164
Leases
Financing Receivable, Past Due [Line Items]
Total	5,199	3,784
CRE non-owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Total	1,534,256	1,535,555
CRE owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Total	659,948	624,375
Multifamily | Commercial real estate
Financing Receivable, Past Due [Line Items]
Total	828,101	639,480
Farmland | Commercial real estate
Financing Receivable, Past Due [Line Items]
Total	172,031	152,492
SFR 1-4 1st DT liens | Consumer
Financing Receivable, Past Due [Line Items]
Total	654,373	546,592
SFR HELOCs and junior liens | Consumer
Financing Receivable, Past Due [Line Items]
Total	325,127	327,484
Other | Consumer
Financing Receivable, Past Due [Line Items]
Total	71,109	78,032
Financial Asset Originated
Financing Receivable, Past Due [Line Items]
Past due	9,292	6,767
Current	4,935,602	4,756,360
Total	4,944,894	4,763,127
Financial Asset Originated | Commercial real estate
Financing Receivable, Past Due [Line Items]
Past due	5,653	2,629
Current	3,188,683	2,949,273
Total	3,194,336	2,951,902
Financial Asset Originated | Consumer
Financing Receivable, Past Due [Line Items]
Past due	2,810	3,452
Current	1,047,799	948,656
Total	1,050,609	952,108
Financial Asset Originated | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Past due	588	686
Current	451,481	525,641
Total	452,069	526,327
Financial Asset Originated | Construction
Financing Receivable, Past Due [Line Items]
Past due	0	0
Current	200,714	284,842
Total	200,714	284,842
Financial Asset Originated | Agriculture production
Financing Receivable, Past Due [Line Items]
Past due	241	0
Current	41,726	44,164
Total	41,967	44,164
Financial Asset Originated | Leases
Financing Receivable, Past Due [Line Items]
Past due	0	0
Current	5,199	3,784
Total	5,199	3,784
Financial Asset Originated | CRE non-owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Past due	4,305	539
Current	1,529,951	1,535,016
Total	1,534,256	1,535,555
Financial Asset Originated | CRE owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Past due	502	1,121
Current	659,446	623,254
Total	659,948	624,375
Financial Asset Originated | Multifamily | Commercial real estate
Financing Receivable, Past Due [Line Items]
Past due	0	0
Current	828,101	639,480
Total	828,101	639,480
Financial Asset Originated | Farmland | Commercial real estate
Financing Receivable, Past Due [Line Items]
Past due	846	969
Current	171,185	151,523
Total	172,031	152,492
Financial Asset Originated | SFR 1-4 1st DT liens | Consumer
Financing Receivable, Past Due [Line Items]
Past due	423	997
Current	653,950	545,595
Total	654,373	546,592
Financial Asset Originated | SFR HELOCs and junior liens | Consumer
Financing Receivable, Past Due [Line Items]
Past due	2,322	2,301
Current	322,805	325,183
Total	325,127	327,484
Financial Asset Originated | Other | Consumer
Financing Receivable, Past Due [Line Items]
Past due	65	154
Current	71,044	77,878
Total	71,109	78,032
Financial Asset, 30 to 59 Days Past Due | Financial Asset Originated
Financing Receivable, Past Due [Line Items]
Past due	1,563	1,974
Financial Asset, 30 to 59 Days Past Due | Financial Asset Originated | Commercial real estate
Financing Receivable, Past Due [Line Items]
Past due	365	1,323
Financial Asset, 30 to 59 Days Past Due | Financial Asset Originated | Consumer
Financing Receivable, Past Due [Line Items]
Past due	707	496
Financial Asset, 30 to 59 Days Past Due | Financial Asset Originated | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Past due	250	155
Financial Asset, 30 to 59 Days Past Due | Financial Asset Originated | Construction
Financing Receivable, Past Due [Line Items]
Past due	0	0
Financial Asset, 30 to 59 Days Past Due | Financial Asset Originated | Agriculture production
Financing Receivable, Past Due [Line Items]
Past due	241	0
Financial Asset, 30 to 59 Days Past Due | Financial Asset Originated | Leases
Financing Receivable, Past Due [Line Items]
Past due	0	0
Financial Asset, 30 to 59 Days Past Due | Financial Asset Originated | CRE non-owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Past due	337	127
Financial Asset, 30 to 59 Days Past Due | Financial Asset Originated | CRE owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Past due	28	297
Financial Asset, 30 to 59 Days Past Due | Financial Asset Originated | Multifamily | Commercial real estate
Financing Receivable, Past Due [Line Items]
Past due	0	0
Financial Asset, 30 to 59 Days Past Due | Financial Asset Originated | Farmland | Commercial real estate
Financing Receivable, Past Due [Line Items]
Past due	0	899
Financial Asset, 30 to 59 Days Past Due | Financial Asset Originated | SFR 1-4 1st DT liens | Consumer
Financing Receivable, Past Due [Line Items]
Past due	0	37
Financial Asset, 30 to 59 Days Past Due | Financial Asset Originated | SFR HELOCs and junior liens | Consumer
Financing Receivable, Past Due [Line Items]
Past due	694	418
Financial Asset, 30 to 59 Days Past Due | Financial Asset Originated | Other | Consumer
Financing Receivable, Past Due [Line Items]
Past due	13	41
Financial Asset, 60 to 89 Days Past Due | Financial Asset Originated
Financing Receivable, Past Due [Line Items]
Past due	352	824
Financial Asset, 60 to 89 Days Past Due | Financial Asset Originated | Commercial real estate
Financing Receivable, Past Due [Line Items]
Past due	111	173
Financial Asset, 60 to 89 Days Past Due | Financial Asset Originated | Consumer
Financing Receivable, Past Due [Line Items]
Past due	63	225
Financial Asset, 60 to 89 Days Past Due | Financial Asset Originated | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Past due	178	426
Financial Asset, 60 to 89 Days Past Due | Financial Asset Originated | Construction
Financing Receivable, Past Due [Line Items]
Past due	0	0
Financial Asset, 60 to 89 Days Past Due | Financial Asset Originated | Agriculture production
Financing Receivable, Past Due [Line Items]
Past due	0	0
Financial Asset, 60 to 89 Days Past Due | Financial Asset Originated | Leases
Financing Receivable, Past Due [Line Items]
Past due	0	0
Financial Asset, 60 to 89 Days Past Due | Financial Asset Originated | CRE non-owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Past due	49	173
Financial Asset, 60 to 89 Days Past Due | Financial Asset Originated | CRE owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Past due	62
Financial Asset, 60 to 89 Days Past Due | Financial Asset Originated | Multifamily | Commercial real estate
Financing Receivable, Past Due [Line Items]
Past due	0	0
Financial Asset, 60 to 89 Days Past Due | Financial Asset Originated | Farmland | Commercial real estate
Financing Receivable, Past Due [Line Items]
Past due	0	0
Financial Asset, 60 to 89 Days Past Due | Financial Asset Originated | SFR 1-4 1st DT liens | Consumer
Financing Receivable, Past Due [Line Items]
Past due	0	0
Financial Asset, 60 to 89 Days Past Due | Financial Asset Originated | SFR HELOCs and junior liens | Consumer
Financing Receivable, Past Due [Line Items]
Past due	63	212
Financial Asset, 60 to 89 Days Past Due | Financial Asset Originated | Other | Consumer
Financing Receivable, Past Due [Line Items]
Past due	0	13
Financial Asset, Equal to or Greater than 90 Days Past Due | Financial Asset Originated
Financing Receivable, Past Due [Line Items]
Past due	7,377	3,969
Financial Asset, Equal to or Greater than 90 Days Past Due | Financial Asset Originated | Commercial real estate
Financing Receivable, Past Due [Line Items]
Past due	5,177	1,133
Financial Asset, Equal to or Greater than 90 Days Past Due | Financial Asset Originated | Consumer
Financing Receivable, Past Due [Line Items]
Past due	2,040	2,731
Financial Asset, Equal to or Greater than 90 Days Past Due | Financial Asset Originated | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Past due	160	105
Financial Asset, Equal to or Greater than 90 Days Past Due | Financial Asset Originated | Construction
Financing Receivable, Past Due [Line Items]
Past due	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due | Financial Asset Originated | Agriculture production
Financing Receivable, Past Due [Line Items]
Past due	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due | Financial Asset Originated | Leases
Financing Receivable, Past Due [Line Items]
Past due	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due | Financial Asset Originated | CRE non-owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Past due	3,919	239
Financial Asset, Equal to or Greater than 90 Days Past Due | Financial Asset Originated | CRE owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Past due	412	824
Financial Asset, Equal to or Greater than 90 Days Past Due | Financial Asset Originated | Multifamily | Commercial real estate
Financing Receivable, Past Due [Line Items]
Past due	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due | Financial Asset Originated | Farmland | Commercial real estate
Financing Receivable, Past Due [Line Items]
Past due	846	70
Financial Asset, Equal to or Greater than 90 Days Past Due | Financial Asset Originated | SFR 1-4 1st DT liens | Consumer
Financing Receivable, Past Due [Line Items]
Past due	423	960
Financial Asset, Equal to or Greater than 90 Days Past Due | Financial Asset Originated | SFR HELOCs and junior liens | Consumer
Financing Receivable, Past Due [Line Items]
Past due	1,565	1,671
Financial Asset, Equal to or Greater than 90 Days Past Due | Financial Asset Originated | Other | Consumer
Financing Receivable, Past Due [Line Items]
Past due	$ 52	$ 100

Allowance for Credit Losses -_4

Allowance for Credit Losses - Schedule of Non Accrual Loans (Detail) - Financial Asset Originated - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Non accrual with no allowance for credit losses	$ 24,953	$ 21,703
Non accrual, no allowance including guaranteed loans	25,561	22,390
Non accrual including guaranteed loans	32,705	26,864
Total non accrual	31,840	26,053
Loans Insured or Guaranteed by US Government Authorities
Financing Receivable, Past Due [Line Items]
Non accrual with no allowance for credit losses	608	687
Total non accrual	865	811
Financial Asset, Equal to or Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due 90 days or more and still accruing	0	0
Commercial real estate
Financing Receivable, Past Due [Line Items]
Non accrual with no allowance for credit losses	13,164	7,689
Total non accrual	15,642	8,709
Commercial real estate | Financial Asset, Equal to or Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due 90 days or more and still accruing	0	0
Consumer
Financing Receivable, Past Due [Line Items]
Non accrual with no allowance for credit losses	7,909	9,498
Total non accrual	9,046	11,408
Consumer | Financial Asset, Equal to or Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due 90 days or more and still accruing	0	0
Commercial and industrial
Financing Receivable, Past Due [Line Items]
Non accrual with no allowance for credit losses	86	652
Total non accrual	3,615	2,183
Commercial and industrial | Financial Asset, Equal to or Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due 90 days or more and still accruing	0	0
Construction
Financing Receivable, Past Due [Line Items]
Non accrual with no allowance for credit losses	4,402	4,546
Total non accrual	4,402	4,546
Construction | Financial Asset, Equal to or Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due 90 days or more and still accruing	0	0
Agriculture production
Financing Receivable, Past Due [Line Items]
Non accrual with no allowance for credit losses	0	5
Total non accrual	0	18
Agriculture production | Financial Asset, Equal to or Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due 90 days or more and still accruing	0	0
Leases
Financing Receivable, Past Due [Line Items]
Non accrual with no allowance for credit losses	0	0
Total non accrual	0	0
Leases | Financial Asset, Equal to or Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due 90 days or more and still accruing	0	0
CRE non-owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Non accrual with no allowance for credit losses	8,515	3,110
Total non accrual	8,515	3,110
CRE non-owner occupied | Commercial real estate | Financial Asset, Equal to or Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due 90 days or more and still accruing	0	0
CRE owner occupied | Commercial real estate
Financing Receivable, Past Due [Line Items]
Non accrual with no allowance for credit losses	3,132	3,111
Total non accrual	5,610	4,061
CRE owner occupied | Commercial real estate | Financial Asset, Equal to or Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due 90 days or more and still accruing	0	0
Multifamily | Commercial real estate
Financing Receivable, Past Due [Line Items]
Non accrual with no allowance for credit losses	171	0
Total non accrual	171	0
Multifamily | Commercial real estate | Financial Asset, Equal to or Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due 90 days or more and still accruing	0	0
Farmland | Commercial real estate
Financing Receivable, Past Due [Line Items]
Non accrual with no allowance for credit losses	1,346	1,468
Total non accrual	1,346	1,538
Farmland | Commercial real estate | Financial Asset, Equal to or Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due 90 days or more and still accruing	0	0
SFR 1-4 1st DT liens | Consumer
Financing Receivable, Past Due [Line Items]
Non accrual with no allowance for credit losses	4,185	4,950
Total non accrual	4,328	5,093
SFR 1-4 1st DT liens | Consumer | Financial Asset, Equal to or Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due 90 days or more and still accruing	0	0
SFR HELOCs and junior liens | Consumer
Financing Receivable, Past Due [Line Items]
Non accrual with no allowance for credit losses	3,677	4,480
Total non accrual	4,604	6,148
SFR HELOCs and junior liens | Consumer | Financial Asset, Equal to or Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due 90 days or more and still accruing	0	0
Other | Consumer
Financing Receivable, Past Due [Line Items]
Non accrual with no allowance for credit losses	47	68
Total non accrual	114	167
Other | Consumer | Financial Asset, Equal to or Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Past due 90 days or more and still accruing	$ 0	$ 0

Allowance for Credit Losses -_5

Allowance for Credit Losses - Amortized Cost Basis of Collateral Dependent Loans, By Class of Loan (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 4,944,894	$ 4,763,127
Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	3,396	3,241
Office
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	416	1,611
Warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,611	1,668
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	4,922	334
Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	171	0
Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,346	1,538
SFR -1st Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	11,668	11,469
SFR -2nd Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,924	2,839
Automobile/Truck
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	21	97
A/R and Inventory
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	43	1,186
Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	43	80
Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	25,561	24,063
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	3,194,336	2,951,902
Commercial real estate | Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	3,396	3,241
Commercial real estate | Office
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	416	1,611
Commercial real estate | Warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,611	1,668
Commercial real estate | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	4,896	0
Commercial real estate | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	171	0
Commercial real estate | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,346	1,538
Commercial real estate | SFR -1st Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,328	0
Commercial real estate | SFR -2nd Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Commercial real estate | Automobile/Truck
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Commercial real estate | A/R and Inventory
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Commercial real estate | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Commercial real estate | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	13,164	8,058
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,050,609	952,108
Consumer | Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Consumer | Office
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Consumer | Warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Consumer | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	26	42
Consumer | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Consumer | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Consumer | SFR -1st Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	5,938	6,923
Consumer | SFR -2nd Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,924	2,839
Consumer | Automobile/Truck
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	21	97
Consumer | A/R and Inventory
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Consumer | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Consumer | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	7,909	9,901
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	452,069	526,327
Commercial and industrial | Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Commercial and industrial | Office
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Commercial and industrial | Warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Commercial and industrial | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	292
Commercial and industrial | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Commercial and industrial | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Commercial and industrial | SFR -1st Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Commercial and industrial | SFR -2nd Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Commercial and industrial | Automobile/Truck
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Commercial and industrial | A/R and Inventory
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	43	1,173
Commercial and industrial | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	43	75
Commercial and industrial | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	86	1,540
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	200,714	284,842
Construction | Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Construction | Office
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Construction | Warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Construction | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Construction | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Construction | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Construction | SFR -1st Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	4,402	4,546
Construction | SFR -2nd Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Construction | Automobile/Truck
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Construction | A/R and Inventory
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Construction | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Construction | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	4,402	4,546
Agriculture production
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	41,967	44,164
Agriculture production | Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Agriculture production | Office
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Agriculture production | Warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Agriculture production | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Agriculture production | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Agriculture production | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Agriculture production | SFR -1st Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Agriculture production | SFR -2nd Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Agriculture production | Automobile/Truck
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Agriculture production | A/R and Inventory
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	13
Agriculture production | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	5
Agriculture production | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	18
Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	5,199	3,784
Leases | Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Leases | Office
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Leases | Warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Leases | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Leases | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Leases | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Leases | SFR -1st Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Leases | SFR -2nd Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Leases | Automobile/Truck
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Leases | A/R and Inventory
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Leases | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Leases | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
CRE non-owner occupied | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,534,256	1,535,555
CRE non-owner occupied | Commercial real estate | Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,853	2,445
CRE non-owner occupied | Commercial real estate | Office
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	416	435
CRE non-owner occupied | Commercial real estate | Warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
CRE non-owner occupied | Commercial real estate | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	3,918	0
CRE non-owner occupied | Commercial real estate | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
CRE non-owner occupied | Commercial real estate | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
CRE non-owner occupied | Commercial real estate | SFR -1st Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,328	0
CRE non-owner occupied | Commercial real estate | SFR -2nd Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
CRE non-owner occupied | Commercial real estate | Automobile/Truck
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
CRE non-owner occupied | Commercial real estate | A/R and Inventory
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
CRE non-owner occupied | Commercial real estate | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
CRE non-owner occupied | Commercial real estate | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	8,515	2,880
CRE owner occupied | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	659,948	624,375
CRE owner occupied | Commercial real estate | Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	543	796
CRE owner occupied | Commercial real estate | Office
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	1,176
CRE owner occupied | Commercial real estate | Warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,611	1,668
CRE owner occupied | Commercial real estate | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	978	0
CRE owner occupied | Commercial real estate | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
CRE owner occupied | Commercial real estate | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
CRE owner occupied | Commercial real estate | SFR -1st Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
CRE owner occupied | Commercial real estate | SFR -2nd Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
CRE owner occupied | Commercial real estate | Automobile/Truck
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
CRE owner occupied | Commercial real estate | A/R and Inventory
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
CRE owner occupied | Commercial real estate | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
CRE owner occupied | Commercial real estate | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	3,132	3,640
Multifamily | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	828,101	639,480
Multifamily | Commercial real estate | Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Multifamily | Commercial real estate | Office
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Multifamily | Commercial real estate | Warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Multifamily | Commercial real estate | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Multifamily | Commercial real estate | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	171	0
Multifamily | Commercial real estate | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Multifamily | Commercial real estate | SFR -1st Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Multifamily | Commercial real estate | SFR -2nd Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Multifamily | Commercial real estate | Automobile/Truck
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Multifamily | Commercial real estate | A/R and Inventory
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Multifamily | Commercial real estate | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Multifamily | Commercial real estate | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	171	0
Farmland | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	172,031	152,492
Farmland | Commercial real estate | Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Farmland | Commercial real estate | Office
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Farmland | Commercial real estate | Warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Farmland | Commercial real estate | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Farmland | Commercial real estate | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Farmland | Commercial real estate | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,346	1,538
Farmland | Commercial real estate | SFR -1st Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Farmland | Commercial real estate | SFR -2nd Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Farmland | Commercial real estate | Automobile/Truck
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Farmland | Commercial real estate | A/R and Inventory
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Farmland | Commercial real estate | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Farmland | Commercial real estate | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,346	1,538
SFR 1-4 1st DT liens | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	654,373	546,592
SFR 1-4 1st DT liens | Consumer | Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR 1-4 1st DT liens | Consumer | Office
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR 1-4 1st DT liens | Consumer | Warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR 1-4 1st DT liens | Consumer | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR 1-4 1st DT liens | Consumer | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR 1-4 1st DT liens | Consumer | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR 1-4 1st DT liens | Consumer | SFR -1st Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	4,185	5,068
SFR 1-4 1st DT liens | Consumer | SFR -2nd Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR 1-4 1st DT liens | Consumer | Automobile/Truck
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR 1-4 1st DT liens | Consumer | A/R and Inventory
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR 1-4 1st DT liens | Consumer | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR 1-4 1st DT liens | Consumer | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	4,185	5,068
SFR HELOCs and junior liens | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	325,127	327,484
SFR HELOCs and junior liens | Consumer | Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR HELOCs and junior liens | Consumer | Office
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR HELOCs and junior liens | Consumer | Warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR HELOCs and junior liens | Consumer | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR HELOCs and junior liens | Consumer | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR HELOCs and junior liens | Consumer | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR HELOCs and junior liens | Consumer | SFR -1st Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,753	1,855
SFR HELOCs and junior liens | Consumer | SFR -2nd Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	1,924	2,839
SFR HELOCs and junior liens | Consumer | Automobile/Truck
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR HELOCs and junior liens | Consumer | A/R and Inventory
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR HELOCs and junior liens | Consumer | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
SFR HELOCs and junior liens | Consumer | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	3,677	4,694
Other | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	71,109	78,032
Other | Consumer | Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Other | Consumer | Office
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Other | Consumer | Warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Other | Consumer | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	26	42
Other | Consumer | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Other | Consumer | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Other | Consumer | SFR -1st Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Other | Consumer | SFR -2nd Deed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Other | Consumer | Automobile/Truck
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	21	97
Other | Consumer | A/R and Inventory
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Other | Consumer | Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	0	0
Other | Consumer | Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 47	$ 139

Allowance for Credit Losses - T

Allowance for Credit Losses - Troubled Debt Restructurings (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021USD ($)investmentSecurity	Jun. 30, 2020USD ($)investmentSecurity	Jun. 30, 2021USD ($)investmentSecurity	Jun. 30, 2020USD ($)investmentSecurity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number (in investment securities) | investmentSecurity	3,000	0	8	6,000
Pre-mod outstanding principal balance	$ 2,706	$ 0	$ 4,079	$ 680
Post-mod outstanding principal balance	2,706	0	4,070	738
Financial impact due to TDR taken as additional provision	$ 999	$ 0	$ 2,365	$ 21
Number that defaulted during the period (in investment securities) | investmentSecurity	0	1,000	4	2,000
Recorded investment of TDRs that defaulted during the period	$ 0	$ 735	$ 1,094	$ 1,037
Financial impact due to the default of previous TDR taken as charge- offs or additional provisions	$ 0	$ 0	$ 0	$ 0
Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number (in investment securities) | investmentSecurity	1,000	0	3	3,000
Pre-mod outstanding principal balance	$ 706	$ 0	$ 1,763	$ 487
Post-mod outstanding principal balance	706	0	1,760	549
Financial impact due to TDR taken as additional provision	$ 706	$ 0	$ 1,762	$ 0
Number that defaulted during the period (in investment securities) | investmentSecurity	0	0	3	0
Recorded investment of TDRs that defaulted during the period	$ 0	$ 0	$ 847	$ 0
Financial impact due to the default of previous TDR taken as charge- offs or additional provisions	$ 0	$ 0	$ 0	$ 0
Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number (in investment securities) | investmentSecurity	0	0	0	2,000
Pre-mod outstanding principal balance	$ 0	$ 0	$ 0	$ 172
Post-mod outstanding principal balance	0	0	0	169
Financial impact due to TDR taken as additional provision	$ 0	$ 0	$ 0	$ 0
Number that defaulted during the period (in investment securities) | investmentSecurity	0	1,000	0	2,000
Recorded investment of TDRs that defaulted during the period	$ 0	$ 735	$ 0	$ 1,037
Financial impact due to the default of previous TDR taken as charge- offs or additional provisions	$ 0	$ 0	$ 0	$ 0
Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number (in investment securities) | investmentSecurity	2,000	0	5	1,000
Pre-mod outstanding principal balance	$ 2,000	$ 0	$ 2,316	$ 21
Post-mod outstanding principal balance	2,000	0	2,310	20
Financial impact due to TDR taken as additional provision	$ 293	$ 0	$ 603	$ 21
Number that defaulted during the period (in investment securities) | investmentSecurity	0	0	1	0
Recorded investment of TDRs that defaulted during the period	$ 0	$ 0	$ 247	$ 0
Financial impact due to the default of previous TDR taken as charge- offs or additional provisions	$ 0	$ 0	$ 0	$ 0
Construction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number (in investment securities) | investmentSecurity	0	0	0	0
Pre-mod outstanding principal balance	$ 0	$ 0	$ 0	$ 0
Post-mod outstanding principal balance	0	0	0	0
Financial impact due to TDR taken as additional provision	$ 0	$ 0	$ 0	$ 0
Number that defaulted during the period (in investment securities) | investmentSecurity	0	0	0	0
Recorded investment of TDRs that defaulted during the period	$ 0	$ 0	$ 0	$ 0
Financial impact due to the default of previous TDR taken as charge- offs or additional provisions	$ 0	$ 0	$ 0	$ 0
Agriculture production
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number (in investment securities) | investmentSecurity	0	0	0	0
Pre-mod outstanding principal balance	$ 0	$ 0	$ 0	$ 0
Post-mod outstanding principal balance	0	0	0	0
Financial impact due to TDR taken as additional provision	$ 0	$ 0	$ 0	$ 0
Number that defaulted during the period (in investment securities) | investmentSecurity	0	0	0	0
Recorded investment of TDRs that defaulted during the period	$ 0	$ 0	$ 0	$ 0
Financial impact due to the default of previous TDR taken as charge- offs or additional provisions	$ 0	$ 0	$ 0	$ 0
Leases
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number (in investment securities) | investmentSecurity	0	0	0	0
Pre-mod outstanding principal balance	$ 0	$ 0	$ 0	$ 0
Post-mod outstanding principal balance	0	0	0	0
Financial impact due to TDR taken as additional provision	$ 0	$ 0	$ 0	$ 0
Number that defaulted during the period (in investment securities) | investmentSecurity	0	0	0	0
Recorded investment of TDRs that defaulted during the period	$ 0	$ 0	$ 0	$ 0
Financial impact due to the default of previous TDR taken as charge- offs or additional provisions	$ 0	$ 0	$ 0	$ 0
CRE non-owner occupied | Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number (in investment securities) | investmentSecurity	1,000	0	2	1,000
Pre-mod outstanding principal balance	$ 706	$ 0	$ 1,023	$ 257
Post-mod outstanding principal balance	706	0	1,018	251
Financial impact due to TDR taken as additional provision	$ 706	$ 0	$ 1,020	$ 0
Number that defaulted during the period (in investment securities) | investmentSecurity	0	0	0	0
Recorded investment of TDRs that defaulted during the period	$ 0	$ 0	$ 0	$ 0
Financial impact due to the default of previous TDR taken as charge- offs or additional provisions	$ 0	$ 0	$ 0	$ 0
CRE owner occupied | Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number (in investment securities) | investmentSecurity	0	0	1	0
Pre-mod outstanding principal balance	$ 0	$ 0	$ 740	$ 0
Post-mod outstanding principal balance	0	0	742	0
Financial impact due to TDR taken as additional provision	$ 0	$ 0	$ 742	$ 0
Number that defaulted during the period (in investment securities) | investmentSecurity	0	0	0	0
Recorded investment of TDRs that defaulted during the period	$ 0	$ 0	$ 0	$ 0
Financial impact due to the default of previous TDR taken as charge- offs or additional provisions	$ 0	$ 0	$ 0	$ 0
Multifamily | Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number (in investment securities) | investmentSecurity	0	0	0	0
Pre-mod outstanding principal balance	$ 0	$ 0	$ 0	$ 0
Post-mod outstanding principal balance	0	0	0	0
Financial impact due to TDR taken as additional provision	$ 0	$ 0	$ 0	$ 0
Number that defaulted during the period (in investment securities) | investmentSecurity	0	0	0	0
Recorded investment of TDRs that defaulted during the period	$ 0	$ 0	$ 0	$ 0
Financial impact due to the default of previous TDR taken as charge- offs or additional provisions	$ 0	$ 0	$ 0	$ 0
Farmland | Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number (in investment securities) | investmentSecurity	0	0	0	2,000
Pre-mod outstanding principal balance	$ 0	$ 0	$ 0	$ 230
Post-mod outstanding principal balance	0	0	0	298
Financial impact due to TDR taken as additional provision	$ 0	$ 0	$ 0	$ 0
Number that defaulted during the period (in investment securities) | investmentSecurity	0	0	3	0
Recorded investment of TDRs that defaulted during the period	$ 0	$ 0	$ 847	$ 0
Financial impact due to the default of previous TDR taken as charge- offs or additional provisions	$ 0	$ 0	$ 0	$ 0
SFR 1-4 1st DT liens | Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number (in investment securities) | investmentSecurity	0	0	0	0
Pre-mod outstanding principal balance	$ 0	$ 0	$ 0	$ 0
Post-mod outstanding principal balance	0	0	0	0
Financial impact due to TDR taken as additional provision	$ 0	$ 0	$ 0	$ 0
Number that defaulted during the period (in investment securities) | investmentSecurity	0	1,000	0	2,000
Recorded investment of TDRs that defaulted during the period	$ 0	$ 735	$ 0	$ 1,037
Financial impact due to the default of previous TDR taken as charge- offs or additional provisions	$ 0	$ 0	$ 0	$ 0
SFR HELOCs and junior liens | Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number (in investment securities) | investmentSecurity	0	0	0	2,000
Pre-mod outstanding principal balance	$ 0	$ 0	$ 0	$ 172
Post-mod outstanding principal balance	0	0	0	169
Financial impact due to TDR taken as additional provision	$ 0	$ 0	$ 0	$ 0
Number that defaulted during the period (in investment securities) | investmentSecurity	0	0	0	0
Recorded investment of TDRs that defaulted during the period	$ 0	$ 0	$ 0	$ 0
Financial impact due to the default of previous TDR taken as charge- offs or additional provisions	$ 0	$ 0	$ 0	$ 0
Other | Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number (in investment securities) | investmentSecurity	0	0	0	0
Pre-mod outstanding principal balance	$ 0	$ 0	$ 0	$ 0
Post-mod outstanding principal balance	0	0	0	0
Financial impact due to TDR taken as additional provision	$ 0	$ 0	$ 0	$ 0
Number that defaulted during the period (in investment securities) | investmentSecurity	0	0	0	0
Recorded investment of TDRs that defaulted during the period	$ 0	$ 0	$ 0	$ 0
Financial impact due to the default of previous TDR taken as charge- offs or additional provisions	$ 0	$ 0	$ 0	$ 0

Leases - Additional Information

Leases - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2021renewalOption
Leases [Abstract]
Number of lease renewal options (in renewal options)	1

Leases - Components of Lease Ex

Leases - Components of Lease Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Leases [Abstract]
Operating lease cost	$ 1,267	$ 1,291	$ 2,526	$ 2,586
Short-term lease cost	61	65	122	128
Variable lease cost	(1)	1	(3)	6
Sublease income	(11)	(35)	(24)	(69)
Total lease cost	$ 1,316	$ 1,322	$ 2,621	$ 2,651

Leases - Supplemental Cash Flow

Leases - Supplemental Cash Flow Information Related To Leases (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Leases [Abstract]
Operating cash flows for operating leases	$ 1,226	$ 1,243	$ 2,430	$ 2,480
ROUA obtained in exchange for operating lease liabilities	$ 0	$ 675	$ 1,308	$ 4,068

Leases - Weighted Average Opera

Leases - Weighted Average Operating Lease Term And Discount Rate (Detail)	Jun. 30, 2021	Jun. 30, 2020
Leases [Abstract]
Weighted-average remaining lease term (years)	9 years 9 months 18 days	10 years 3 months 18 days
Weighted-average discount rate	3.03%	3.17%

Leases - Future Minimum Rental

Leases - Future Minimum Rental Payments For Operating Leases (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Leases [Abstract]
2021	$ 2,252
2022	4,295
2023	3,624
2024	3,352
2025	2,891
Thereafter	14,925
Total	31,339
Discount for present value of expected cash flows	(4,632)
Lease liability	$ 26,707	$ 27,973

Deposits - Summary of Balances

Deposits - Summary of Balances of Deposits (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Deposits [Abstract]
Noninterest-bearing demand	$ 2,843,783	$ 2,581,517
Interest-bearing demand	1,486,321	1,414,908
Savings	2,337,557	2,164,942
Time certificates, $250,000 or more	59,589	73,147
Other time certificates	264,803	271,420
Total deposits	$ 6,992,053	$ 6,505,934

Deposits - Additional Informati

Deposits - Additional Information (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Schedule Of Deposits [Line Items]
Overdrawn deposit balances classified as consumer loans	$ 916	$ 985
California
Schedule Of Deposits [Line Items]
Certificate of deposits, included in time certificates, over $250,000	$ 10,000	$ 10,000

Commitments and Contingencies -

Commitments and Contingencies - Summary of Bank's Commitments and Contingent Liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit
Real estate construction loans
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit	207,741	227,876
Real estate mortgage loans
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit	274,339	202,306
Standby letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit	14,112	15,056
Commercial Loan
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit	426,278	462,422
Consumer loans
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit	566,332	534,223
Deposit account overdraft privilege
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to extend credit	$ 112,993	$ 110,813

Shareholders' Equity - Addition

Shareholders' Equity - Additional Information (Detail) - USD ($)	3 Months Ended			6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Feb. 25, 2021	Dec. 31, 2020
Class of Stock [Line Items]
Cash dividends received	$ 8,367,000		$ 12,694,000	$ 16,139,000	$ 39,448,000
Repurchase of common stock	$ 2,551,000		$ 8,009,000	2,561,000	25,304,000
Market value of shares repurchased under equity compensation plans				$ 451,000	$ 494,000
Employee Stock
Class of Stock [Line Items]
Company's common stock in lieu of cash to exercise options to purchase shares (in shares)	0		0	0	4,668
Other Share Based Awards
Class of Stock [Line Items]
Company's common stock in lieu of cash to exercise options to purchase shares (in shares)	9,660		11,306	9,730	11,439
2021 Stock Repurchase Plan
Class of Stock [Line Items]
Repurchase of common stock (in shares)						2,000,000
Stock repurchase program, percentage of common stock						6.70%
Repurchase of common stock (in shares)	45,354			45,354
Repurchase of common stock	$ 2,101,000			$ 2,101,000
2019 Stock Repurchase Plan
Class of Stock [Line Items]
Repurchase of common stock (in shares)		223
Repurchase of common stock		$ 8,000
Cumulative number of shares repurchased (in shares)							858,717
Common Stock
Class of Stock [Line Items]
Repurchase of common stock (in shares)	55,014		271,299	55,307	829,969
Repurchase of common stock	$ 983,000		$ 4,833,000	$ 988,000	$ 14,795,000
Market value of shares repurchased under equity compensation plans	$ 450,000		$ 346,000	$ 452,000	$ 494,000

Stock Options and Other Equit_3

Stock Options and Other Equity-Based Incentive Instruments - Additional Information (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Dec. 31, 2020	Apr. 16, 2019
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Weighted-average remaining contractual term (in years)	2 years 8 months 12 days
Number of units released (in shares)	0
Number of units increased (in shares)	169,529
Restricted Stock Units (RSUs) | Service Condition Vesting RSUs
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
RSUs granted (in shares)	47,029
Number of units outstanding expected to vest (in shares)	105,102	99,809
Pre-tax compensation costs	$ 3,894
Number of units released (in shares)	42,712
Restricted Stock Units (RSUs) | Market Plus Service Condition Vesting RSUs
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
RSUs granted (in shares)	31,479
Number of units outstanding expected to vest (in shares)	113,019	81,615
Weighted-average remaining contractual term (in years)	2 years 4 months 24 days
Pre-tax compensation costs	$ 2,106
Number of units released (in shares)	0
2019 Plan
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Aggregate number of shares of TriCo's common stock issued (in shares)			1,500,000

Stock Options and Other Equit_4

Stock Options and Other Equity-Based Incentive Instruments - Stock Option Activity (Detail)	6 Months Ended
	Jun. 30, 2021$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options outstanding at beginning of period (in shares) | shares	128,500
Options granted (in shares) | shares	0
Options exercised (in shares) | shares	(1,675)
Options forfeited (in shares) | shares	0
Options outstanding at end of period (in shares) | shares	126,825
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted Average Exercise Price at beginning of period (in USD per share) | $ / shares	$ 17.72
Weighted Average Exercise Price of Options Granted (in USD per share) | $ / shares	0
Weighted Average Exercise Price of Options Exercised (in USD per share) | $ / shares	16.59
Weighted Average Exercise Price of Options Forfeited (in USD per share) | $ / shares	0
Weighted Average Exercise Price at end of period (in USD per share) | $ / shares	$ 17.74

Stock Options and Other Equit_5

Stock Options and Other Equity-Based Incentive Instruments - Summary of Options Outstanding (Detail) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of options (in shares)	126,825	128,500
Weighted average exercise price (in USD per share)	$ 17.74	$ 17.72
Intrinsic value (in thousands)	$ 3,763
Weighted average remaining contractual term (in years)	1 year 6 months
Currently Exercisable
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of options (in shares)	126,825
Weighted average exercise price (in USD per share)	$ 17.74
Intrinsic value (in thousands)	$ 3,763
Weighted average remaining contractual term (in years)	1 year 6 months
Currently Not Exercisable
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of options (in shares)	0
Weighted average exercise price (in USD per share)	$ 0
Intrinsic value (in thousands)	$ 0
Weighted average remaining contractual term (in years)	0 years

Stock Options and Other Equit_6

Stock Options and Other Equity-Based Incentive Instruments - Restricted Stock Unit (RSU) Activity (Detail)	6 Months Ended
	Jun. 30, 2021shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
RSUs released (in shares)	0
Restricted Stock Units (RSUs) | Service Condition Vesting RSUs
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding at beginning of period (in shares)	99,809
RSUs granted (in shares)	47,029
RSUs added through dividend and performance credits (in shares)	1,090
RSUs released (in shares)	(42,712)
RSUs forfeited/expired (in shares)	(114)
Outstanding at end of period (in shares)	105,102
Restricted Stock Units (RSUs) | Market Plus Service Condition Vesting RSUs
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding at beginning of period (in shares)	81,615
RSUs granted (in shares)	31,479
RSUs added through dividend and performance credits (in shares)	0
RSUs released (in shares)	0
RSUs forfeited/expired (in shares)	(75)
Outstanding at end of period (in shares)	113,019

Non-interest Income and Expen_3

Non-interest Income and Expense - Components of Non-Interest Income (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Schedule Of Other Noninterest Income And Expense [Line Items]
Total service charges and fees	$ 10,930	$ 8,168	$ 21,406	$ 17,294
Increase in cash value of life insurance	745	710	1,418	1,430
Asset management and commission income	947	661	1,781	1,577
Gain on sale of loans	2,847	1,736	6,094	2,627
Lease brokerage income	249	127	359	320
Sale of customer checks	116	88	235	212
Gain on sale of investment securities	0	0	0	0
Gain (loss) on marketable equity securities	8	25	(45)	72
Other	115	142	819	(55)
Total other non-interest income	5,027	3,489	10,661	6,183
Total non-interest income	15,957	11,657	32,067	23,477
ATM and interchange fees
Schedule Of Other Noninterest Income And Expense [Line Items]
Total service charges and fees	6,558	5,165	12,419	10,276
Service charges on deposit accounts
Schedule Of Other Noninterest Income And Expense [Line Items]
Total service charges and fees	3,462	3,046	6,731	7,092
Other service fees
Schedule Of Other Noninterest Income And Expense [Line Items]
Total service charges and fees	914	734	1,785	1,492
Mortgage banking service fees
Schedule Of Other Noninterest Income And Expense [Line Items]
Total service charges and fees	467	459	930	928
Change in value of mortgage servicing rights
Schedule Of Other Noninterest Income And Expense [Line Items]
Total service charges and fees	$ (471)	$ (1,236)	$ (459)	$ (2,494)

Non-interest Income and Expen_4

Non-interest Income and Expense - Components of Non Interest Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Other Income and Expenses [Abstract]
Base salaries, net of deferred loan origination costs	$ 17,537	$ 17,277	$ 33,048	$ 34,900
Incentive compensation	4,322	2,395	7,902	5,496
Benefits and other compensation costs	5,222	7,383	11,461	13,931
Total salaries and benefits expense	27,081	27,055	52,411	54,327
Occupancy	3,700	3,398	7,426	7,273
Data processing and software	3,201	3,657	6,403	7,024
Equipment	1,207	1,350	2,724	2,862
Intangible amortization	1,431	1,431	2,862	2,862
Advertising	734	531	1,114	1,196
ATM and POS network charges	1,551	1,210	2,797	2,583
Professional fees	1,046	741	1,640	1,444
Telecommunications	564	639	1,145	1,364
Regulatory assessments and insurance	618	360	1,230	455
Postage	124	283	322	573
Operational losses	212	184	421	405
Courier service	288	337	582	668
Gain on sale or acquisition of foreclosed assets	(15)	(16)	(66)	(57)
(Gain) loss on disposal of fixed assets	(426)	15	(426)	15
Other miscellaneous expense	2,855	4,375	5,204	7,306
Total other non-interest expense	17,090	18,495	33,378	35,973
Total non-interest expense	$ 44,171	$ 45,550	$ 85,789	$ 90,300

Earnings Per Share - Computatio

Earnings Per Share - Computation of Earnings Per Share (Detail) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Earnings Per Share [Abstract]
Net income	$ 28,362	$ 7,430	$ 62,011	$ 23,551
Average number of common shares outstanding (in shares)	29,719	29,754	29,723	30,074
Effect of dilutive stock options and restricted stock (in shares)	185	129	181	129
Average number of common shares outstanding used to calculate diluted earnings per share (in shares)	29,904	29,883	29,904	30,203
Options excluded from diluted earnings per share because of their antidilutive effect (in shares)	0	0	0	0

Comprehensive Income (Loss) - C

Comprehensive Income (Loss) - Components of Other Comprehensive Income (Loss) and Related Tax Effects (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss)	$ 5,206	$ 25,751	$ (4,113)	$ 5,841
Net unrealized gain on available for sale securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
OCI, before reclassifications, before tax	7,392	34,959	(4,945)	5,398
Reclassifications, before tax	0	0	0	0
OCI, after reclassifications, before tax	7,392	34,959	(4,945)	5,398
Tax effect	(2,186)	(10,334)	1,461	(1,595)
Other comprehensive income (loss)	5,206	24,625	(3,484)	3,803
Unfunded status of the supplemental retirement plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
OCI, before reclassifications, before tax	(49)	661	(98)	1,109
Reclassifications, before tax	49	465	98	929
OCI, after reclassifications, before tax	0	1,126	0	2,038
Tax effect	0	0	0	0
Other comprehensive income (loss)	0	1,126	0	2,038
Amortization of prior service cost
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassifications, before tax	(15)	(13)	(29)	(27)
Amortization of actuarial losses
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassifications, before tax	64	478	127	956
Joint beneficiary agreement liability
Accumulated Other Comprehensive Income (Loss) [Line Items]
OCI, before reclassifications, before tax	0	0	(629)	0
Tax effect	0	0	0	0
OCI, before reclassifications, net of tax	$ 0	$ 0	$ (629)	$ 0

Comprehensive Income (Loss) -_2

Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income, net of tax	$ 8,167	$ 12,280
Net unrealized gain on available for sale securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income, before tax	14,238	19,183
Accumulated other comprehensive income, tax effect	(4,210)	(5,671)
Accumulated other comprehensive income, net of tax	10,028	13,512
Unfunded status of the supplemental retirement plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income, before tax	(1,294)	(1,294)
Accumulated other comprehensive income, tax effect	382	382
Accumulated other comprehensive income, net of tax	(912)	(912)
Joint beneficiary agreement liability
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income, before tax	(949)	(320)
Accumulated other comprehensive income, tax effect	0	0
Accumulated other comprehensive income, net of tax	$ (949)	$ (320)

Fair Value Measurement - Additi

Fair Value Measurement - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2021USD ($)investmentSecurity
Fair Value Disclosures [Abstract]
Number of investment securities classified as level 3 (in investment securities) | investmentSecurity	0
Carrying value of loans fully charged-off | $	$ 0

Fair Value Measurement - Record

Fair Value Measurement - Recorded Amount of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - Fair Value Measurements on Recurring Basis - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	$ 1,861,873	$ 1,428,649
Marketable equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	2,979	3,025
Obligations of U.S. government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	1,133,416	812,374
Obligations of states and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	146,924	129,095
Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	2,556	2,544
Asset backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	564,672	470,251
Loans held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	5,723	6,268
Mortgage servicing rights
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	5,603	5,092
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	2,979	3,025
Level 1 | Marketable equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	2,979	3,025
Level 1 | Obligations of U.S. government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Level 1 | Obligations of states and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Level 1 | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Level 1 | Asset backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Level 1 | Loans held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Level 1 | Mortgage servicing rights
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	1,853,291	1,420,532
Level 2 | Marketable equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Level 2 | Obligations of U.S. government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	1,133,416	812,374
Level 2 | Obligations of states and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	146,924	129,095
Level 2 | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	2,556	2,544
Level 2 | Asset backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	564,672	470,251
Level 2 | Loans held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	5,723	6,268
Level 2 | Mortgage servicing rights
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	5,603	5,092
Level 3 | Marketable equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Level 3 | Obligations of U.S. government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Level 3 | Obligations of states and political subdivisions
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Level 3 | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Level 3 | Asset backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Level 3 | Loans held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0
Level 3 | Mortgage servicing rights
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	$ 5,603	$ 5,092

Fair Value Measurement - Reconc

Fair Value Measurement - Reconciliation of Assets and Liabilities Measured at Fair Value Using Significant Unobservable Inputs (Level 3) on Recurring Basis (Detail) - Mortgage servicing rights - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	$ 5,607	$ 5,168	$ 5,092	$ 6,200
Transfers into (out of) Level 3	0	0	0	0
Change Included in Earnings	(471)	(1,236)	(459)	(2,494)
Issuances	467	318	970	544
Ending Balance	$ 5,603	$ 4,250	$ 5,603	$ 4,250

Fair Value Measurement - Quanti

Fair Value Measurement - Quantitative Information about Recurring Level 3 Fair Value Measurements (Detail) - Mortgage servicing rights $ in Thousands	Jun. 30, 2021USD ($)	Dec. 31, 2020USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Mortgages servicing rights, fair value	$ 5,603	$ 5,092
Minimum | Valuation Technique, Discounted Cash Flow | Measurement Input, Constant Prepayment Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.12	0.14
Minimum | Valuation Technique, Discounted Cash Flow | Measurement Input, Discount Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.10	0.10
Maximum | Valuation Technique, Discounted Cash Flow | Measurement Input, Constant Prepayment Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.17	0.200
Maximum | Valuation Technique, Discounted Cash Flow | Measurement Input, Discount Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.14	0.14
Weighted Average | Valuation Technique, Discounted Cash Flow | Measurement Input, Constant Prepayment Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.142	0.176
Weighted Average | Valuation Technique, Discounted Cash Flow | Measurement Input, Discount Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.12	0.12

Fair Value Measurement - Assets

Fair Value Measurement - Assets and Liabilities Measured at Fair Value on Nonrecurring Basis (Detail) - USD ($) $ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Foreclosed assets (Residential real estate)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	$ 123		$ 979
Individually evaluated loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	4,912		1,424
Fair Value Nonrecurring Basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	5,035		2,403
Total Gains/(Losses)	(1,583)		(1,334)
Fair Value Nonrecurring Basis | Individually evaluated loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	4,912	$ 162	1,424
Total Gains/(Losses)	(1,604)	(16)	(1,489)
Fair Value Nonrecurring Basis | Foreclosed Assets | Foreclosed assets (Residential real estate)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	123		979
Total Gains/(Losses)	21		155
Fair Value Nonrecurring Basis | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0		0
Fair Value Nonrecurring Basis | Level 1 | Individually evaluated loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0	0
Fair Value Nonrecurring Basis | Level 1 | Foreclosed Assets | Foreclosed assets (Residential real estate)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0		0
Fair Value Nonrecurring Basis | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0		0
Fair Value Nonrecurring Basis | Level 2 | Individually evaluated loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0	0	0
Fair Value Nonrecurring Basis | Level 2 | Foreclosed Assets | Foreclosed assets (Residential real estate)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	0		0
Fair Value Nonrecurring Basis | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	5,035		2,403
Fair Value Nonrecurring Basis | Level 3 | Individually evaluated loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	4,912	$ 162	1,424
Fair Value Nonrecurring Basis | Level 3 | Foreclosed Assets | Foreclosed assets (Residential real estate)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets measured at fair value	$ 123		$ 979

Fair Value Measurement - Quan_2

Fair Value Measurement - Quantitative Information about (Level 3) Fair Value Measurements for Financial Instruments Measured at Fair Value on Nonrecurring Basis (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Foreclosed assets (Residential real estate)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 123	$ 979
Individually evaluated loans
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value	$ 4,912	$ 1,424

Fair Value Measurement - Estima

Fair Value Measurement - Estimated Fair Values of Financial Instruments that are Reported at Amortized Cost in Consolidated Balance Sheets (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Financial assets:
Cash and due from banks	$ 86,052	$ 77,253
Cash at Federal Reserve and other banks	553,688	592,298
Amortized cost, held to maturity	235,778	284,563
Financial liabilities:
Other borrowings	40,559	26,914
Junior subordinated debt	57,852	57,635
Level 3 | Overdraft Privilege Commitments
Off-balance sheet:
Contract amount, Off-balance sheet	112,993	110,813
Level 3 | Standby letters of credit
Off-balance sheet:
Contract amount, Off-balance sheet	14,112	15,056
Level 3 | Commitments
Off-balance sheet:
Contract amount, Off-balance sheet	1,474,690	1,426,827
Carrying Amount | Level 1
Financial assets:
Cash and due from banks	86,052	77,253
Cash at Federal Reserve and other banks	553,688	592,298
Carrying Amount | Level 2
Financial assets:
Amortized cost, held to maturity	235,778	284,563
Restricted equity securities	17,250	17,250
Financial liabilities:
Deposits	6,992,053	6,505,934
Other borrowings	40,559	26,914
Carrying Amount | Level 3
Financial assets:
Loans, net	4,870,278	4,671,280
Financial liabilities:
Junior subordinated debt	57,852	57,635
Fair Value | Level 1
Financial assets:
Cash and due from banks	86,052	77,253
Cash at Federal Reserve and other banks	553,688	592,298
Fair Value | Level 2
Financial assets:
Amortized cost, held to maturity	247,019	298,726
Financial liabilities:
Deposits	6,998,976	6,507,235
Other borrowings	40,559	26,914
Fair Value | Level 3
Financial assets:
Loans, net	4,875,176	4,753,027
Financial liabilities:
Junior subordinated debt	57,795	56,632
Fair Value | Level 3 | Overdraft Privilege Commitments
Off-balance sheet:
Fair value, Off-balance sheet	1,129	1,108
Fair Value | Level 3 | Standby letters of credit
Off-balance sheet:
Fair value, Off-balance sheet	141	151
Fair Value | Level 3 | Commitments
Off-balance sheet:
Fair value, Off-balance sheet	$ 14,747	$ 14,268

Regulatory Matters - Actual and

Regulatory Matters - Actual and Required Capital Ratios of Bank (Detail) $ in Thousands	Jun. 30, 2021USD ($)	Dec. 31, 2020USD ($)
Parent
Schedule of Capitalization [Line Items]
Total Capital (to Risk Weighted Assets)	$ 846,617	$ 793,433
Tier 1 Capital (to Risk Weighted Assets)	777,241	727,879
Common Equity Tier 1 Capital (to Risk Weighted Assets)	721,126	671,975
Tier 1 Capital (to Average Assets)	$ 777,241	$ 727,879
Total Capital Ratio (to Risk Weighted Assets)	0.1531	0.1522
Tier 1 Capital Ratio (to Risk Weighted Assets)	0.1406	0.1396
Common Equity Tier 1 Capital Ratio (to Risk Weighted Assets)	0.1304	0.1289
Tier 1 Capital Ratio (to Average Assets)	0.0985	0.0993
Parent | Basel III Fully Phased In
Schedule of Capitalization [Line Items]
Total Capital (to Risk Weighted Assets), Minimum Capital Requirement	$ 580,463	$ 547,352
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement	469,899	443,094
Common Equity Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement	386,975	364,901
Tier 1 Capital (to Average Assets), Minimum Capital Requirement	$ 315,578	$ 293,138
Total Capital Ratio (to Risk Weighted Assets), Minimum Capital Requirement	0.1050	0.1050
Tier 1 Capital Ratio (to Risk Weighted Assets), Minimum Capital Requirement	0.0850	0.0850
Common Equity Tier 1 Capital Ratio (to Risk Weighted Assets), Minimum Capital Requirement	7.00%	7.00%
Tier 1 Capital Ratio (to Average Assets), Minimum Capital Requirement	0.0400	0.0400
Tri Countries Bank
Schedule of Capitalization [Line Items]
Total Capital (to Risk Weighted Assets)	$ 835,709	$ 780,320
Tier 1 Capital (to Risk Weighted Assets)	766,377	714,811
Common Equity Tier 1 Capital (to Risk Weighted Assets)	766,377	714,811
Tier 1 Capital (to Average Assets)	$ 766,377	$ 714,811
Total Capital Ratio (to Risk Weighted Assets)	0.1512	0.1497
Tier 1 Capital Ratio (to Risk Weighted Assets)	0.1387	0.1372
Common Equity Tier 1 Capital Ratio (to Risk Weighted Assets)	0.1387	0.1372
Tier 1 Capital Ratio (to Average Assets)	0.0972	0.0976
Total Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions	$ 552,638	$ 521,101
Capital Required to be Well Capitalized to Risk Weighted Assets	0.1000	0.1000
Tier 1 Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions	$ 442,111	$ 416,881
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	0.0800	0.0800
Common Equity Tier 1 Capital (to Risk Weighted Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions	$ 359,215	$ 338,716
Common Equity Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	6.50%	6.50%
Tier 1 Capital (to Average Assets), Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions	$ 394,076	$ 366,186
Tier One Leverage Capital Required to be Well Capitalized to Average Assets	0.0500	0.0500
Tri Countries Bank | Basel III Fully Phased In
Schedule of Capitalization [Line Items]
Total Capital (to Risk Weighted Assets), Minimum Capital Requirement	$ 580,270	$ 547,156
Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement	469,743	442,936
Common Equity Tier 1 Capital (to Risk Weighted Assets), Minimum Capital Requirement	386,847	364,771
Tier 1 Capital (to Average Assets), Minimum Capital Requirement	$ 315,261	$ 292,949
Total Capital Ratio (to Risk Weighted Assets), Minimum Capital Requirement	0.1050	0.1050
Tier 1 Capital Ratio (to Risk Weighted Assets), Minimum Capital Requirement	0.0850	0.0850
Common Equity Tier 1 Capital Ratio (to Risk Weighted Assets), Minimum Capital Requirement	7.00%	7.00%
Tier 1 Capital Ratio (to Average Assets), Minimum Capital Requirement	0.0400	0.0400

Subsequent Events - Narrative (

Subsequent Events - Narrative (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Subsequent Event [Line Items]
Assets	$ 8,170,365	$ 7,639,529
Valley Republic Bancorp
Subsequent Event [Line Items]
Assets	$ 1,360,000

Uncategorized Items - tcbk-2021

Label	Element	Value
Accounting Standards Update [Extensible List]	us-gaap_AccountingStandardsUpdateExtensibleList	Accounting Standards Update 2016-13 [Member]