Westamerica Bancorporation (WABC) 10-K 25 Feb 22 2021 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2021	Feb. 18, 2022	Jun. 30, 2021
Document Information [Line Items]
Entity Central Index Key	0000311094
Entity Registrant Name	WESTAMERICA BANCORPORATION
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2021
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Document Transition Report	false
Entity File Number	001-09383
Entity Incorporation, State or Country Code	CA
Entity Tax Identification Number	94-2156203
Entity Address, Address Line One	1108 Fifth Avenue
Entity Address, City or Town	San Rafael
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94901
City Area Code	707
Local Phone Number	863-6000
Title of 12(b) Security	Common Stock, no par value
Trading Symbol	WABC
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
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 Public Float			$ 885,440,863.36
Entity Common Stock, Shares Outstanding		26,867,644
Auditor Name	Crowe LLP
Auditor Location	Sacramento, California
Auditor Firm ID	173
ICFR Auditor Attestation Flag	true

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Assets:
Cash and due from banks	$ 1,132,085	$ 621,275
Debt securities available for sale	4,638,855	4,063,185
Debt securities held to maturity, net of allowance for credit losses of $7 at December 31, 2021 and $9 at December 31, 2020 (Fair value of $312,562 at December 31, 2021 and $529,678 at December 31, 2020)	306,396	515,589
Loans	1,068,126	1,256,243
Allowance for credit losses on loans	(23,514)	(23,854)
Loans, net of allowance for credit losses on loans	1,044,612	1,232,389
Premises and equipment, net	31,155	32,813
Identifiable intangibles, net	835	1,104
Goodwill	121,673	121,673
Other assets	185,415	159,903
Total Assets	7,461,026	6,747,931
Liabilities:
Noninterest-bearing deposits	3,069,080	2,725,177
Interest-bearing deposits	3,344,876	2,962,802
Total deposits	6,413,956	5,687,979
Short-term borrowed funds	146,246	102,545
Other liabilities	73,722	112,598
Total Liabilities	6,633,924	5,903,122
Contingencies (Note 12)
Shareholders' Equity:
Common stock (no par value), authorized - 150,000 shares Issued and outstanding: 26,866 at December 31, 2021 and 26,807 at December 31, 2020	471,008	466,006
Deferred compensation	35	35
Accumulated other comprehensive income	49,664	114,412
Retained earnings	306,395	264,356
Total Shareholders' Equity	827,102	844,809
Total Liabilities and Shareholders' Equity	$ 7,461,026	$ 6,747,931

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - USD ($) shares in Thousands, $ / shares in Thousands, $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Debt securities held to maturity, allowance for credit losses	$ 7	$ 9
Debt securities held to maturity, fair value	$ 312,562	$ 529,678
Common stock, no par value (in dollars per share)	$ 0	$ 0
Common stock, authorized (in shares)	150,000	150,000
Common stock, issued (in shares)	26,866	26,807
Common stock, outstanding (in shares)	26,866	26,807

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Interest and Loan Fee Income:
Loans	$ 57,558	$ 59,377	$ 58,153
Equity securities	458	419	392
Debt securities available for sale	105,420	91,343	74,147
Debt securities held to maturity	8,875	13,552	18,997
Interest-bearing cash	1,132	1,165	6,993
Total Interest and Loan Fee Income	173,443	165,856	158,682
Interest Expense:
Deposits	1,877	1,770	1,854
Short-term borrowed funds	78	53	34
Other borrowed funds	0	1	0
Total Interest Expense	1,955	1,824	1,888
Net interest income	171,488	164,032	156,794
Provision for Credit Losses	0	4,300	0
Net Interest and Loan Fee Income After Provision For Credit Losses	171,488	159,732	156,794
Noninterest Income:
Gains on sales of real property	0	3,536	0
Life insurance gains	0	0	433
Securities gains	34	71	217
Other noninterest income	2,926	3,998	4,001
Total Noninterest Income	43,345	45,637	47,408
Noninterest Expense:
Salaries and benefits	48,011	50,749	51,054
Occupancy and equipment	19,139	19,637	20,240
Outsourced data processing services	9,601	9,426	9,471
Professional fees	3,253	2,423	2,465
Courier service	2,177	2,001	1,878
Loss contingency	0	0	553
Amortization of identifiable intangibles	269	287	538
Other noninterest expense	15,356	14,043	12,787
Total Noninterest Expense	97,806	98,566	98,986
Income Before Income Taxes	117,027	106,803	105,216
Provision for income taxes	30,518	26,390	24,827
Net Income	$ 86,509	$ 80,413	$ 80,389
Average Common Shares Outstanding (in shares)	26,855	26,942	26,956
Diluted Average Common Shares Outstanding (in shares)	26,870	26,960	27,006
Per Common Share Data:
Basic earnings (in dollars per share)	$ 3.22	$ 2.98	$ 2.98
Diluted earnings (in dollars per share)	3.22	2.98	2.98
Dividends paid per common share (in dollars per share)	$ 1.65	$ 1.64	$ 1.63
Deposit Account [Member]
Noninterest Income:
Noninterest income revenue	$ 13,697	$ 14,149	$ 17,882
Credit Card, Merchant Discount [Member]
Noninterest Income:
Noninterest income revenue	11,998	10,208	10,132
Debit Card [Member]
Noninterest Income:
Noninterest income revenue	6,859	6,181	6,357
Fiduciary and Trust [Member]
Noninterest Income:
Noninterest income revenue	3,311	3,012	2,963
ATM Processing Fees [Member]
Noninterest Income:
Noninterest income revenue	2,280	2,273	2,776
Financial Service, Other [Member]
Noninterest Income:
Noninterest income revenue	1,884	1,837	2,255
Financial Services Commission [Member]
Noninterest Income:
Noninterest income revenue	$ 356	$ 372	$ 392

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net income	$ 86,509	$ 80,413	$ 80,389
Other comprehensive income (loss):
Changes in net unrealized gains on debt securities available for sale	(91,891)	125,519	93,936
Deferred tax benefit (expense)	27,167	(37,108)	(27,771)
Reclassification of gains included in net income	(34)	(71)	(167)
Deferred tax expense on gains included in net income	10	21	49
Changes in unrealized gains on debt securities available for sale, net of tax	(64,748)	88,361	66,047
Total Comprehensive Income	$ 21,761	$ 168,774	$ 146,436

Consolidated Statements of Chan

Consolidated Statements of Changes in Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Cumulative Effect, Period of Adoption, Adjustment [Member]Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member]Common Stock [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member]Deferred Compensation, Share-based Payments [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member]AOCI Attributable to Parent [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member]Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Common Stock [Member]	Deferred Compensation, Share-based Payments [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 31, 2018			26,730					26,730
Balance at Dec. 31, 2018	$ (2,801)	$ (2,801)	$ 448,351	$ 1,395	$ (39,996)	$ 203,040	$ 612,790	$ 448,351	$ 1,395	$ (39,996)	$ 205,841	$ 615,591
Net income											80,389	80,389
Other comprehensive income (loss)										66,047		$ 66,047
Shares issued from stock warrant exercise, net of repurchase (in shares)								51
Exercise of stock options (in shares)								269				516
Exercise of stock options								$ 13,699				$ 13,699
Restricted stock activity (in shares)								18
Restricted stock activity								$ 1,697	(624)			1,073
Stock based compensation								$ 1,744				1,744
Stock awarded to employees (in shares)								2
Stock awarded to employees								$ 105				105
Retirement of common stock (in shares)								(8)
Retirement of common stock								$ (136)			(352)	(488)
Dividends											(43,942)	(43,942)
Balance (in shares) at Dec. 31, 2019			27,062					27,062
Balance at Dec. 31, 2019	$ 52	$ 52	$ 465,460	$ 771	$ 26,051	$ 239,187	$ 731,469	$ 465,460	771	26,051	239,135	731,417
Net income											80,413	80,413
Other comprehensive income (loss)										88,361		$ 88,361
Exercise of stock options (in shares)								52				52
Exercise of stock options								$ 2,838				$ 2,838
Restricted stock activity (in shares)								10
Restricted stock activity								$ 1,270	(736)			534
Stock based compensation								$ 1,875				1,875
Stock awarded to employees (in shares)								2
Stock awarded to employees								$ 100				100
Retirement of common stock (in shares)								(319)
Retirement of common stock								$ (5,537)			(10,959)	(16,496)
Dividends											(44,285)	(44,285)
Balance (in shares) at Dec. 31, 2020								26,807
Balance at Dec. 31, 2020								$ 466,006	35	114,412	264,356	844,809
Net income											86,509	86,509
Other comprehensive income (loss)										(64,748)		$ (64,748)
Exercise of stock options (in shares)								53				53
Exercise of stock options								$ 3,017				$ 3,017
Restricted stock activity (in shares)								9
Restricted stock activity								$ 526				526
Stock based compensation								$ 1,419				1,419
Stock awarded to employees (in shares)								1
Stock awarded to employees								$ 106				106
Retirement of common stock (in shares)								(4)
Retirement of common stock								$ (66)			(166)	(232)
Dividends											(44,304)	(44,304)
Balance (in shares) at Dec. 31, 2021								26,866
Balance at Dec. 31, 2021								$ 471,008	$ 35	$ 49,664	$ 306,395	$ 827,102

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Shareholders' Equity (Parentheticals) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Dividends per share (in dollars per share)	$ 1.65	$ 1.64	$ 1.63

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net income	$ 86,509	$ 80,413	$ 80,389
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization/accretion	16,617	22,647	20,626
Provision for Credit Losses	0	4,300	0
Net amortization of deferred loan fees	(5,576)	(4,442)	(260)
Stock option compensation expense	1,419	1,875	1,744
Life insurance gains	0	0	(433)
Securities gains	(34)	(71)	(217)
Gains on sales of premises and equipment	0	(3,536)	0
Gain on disposal of premises and equipment	0	(71)	0
Net changes in:
Interest income receivable	(2,499)	(4,225)	(2,963)
Net deferred tax liability	3,899	(246)	3,662
Increase in other assets	(3,534)	(3,528)	(14,806)
Income taxes payable	(1,054)	353	(1,733)
Interest expense payable	(72)	(5)	(9)
Other liabilities	(6,940)	14,280	(5,298)
Net Cash Provided by Operating Activities	88,735	107,744	80,702
Investing Activities:
Net repayments (disbursements) of loans	193,755	(126,682)	79,396
Proceeds from life insurance policies	0	0	1,273
Purchases of debt securities available for sale	(1,909,370)	(2,102,983)	(970,542)
Proceeds from sale/maturity/calls of debt securities available for sale	1,204,455	1,260,846	631,016
Proceeds from maturity/calls of debt securities held to maturity	206,400	218,164	238,450
Proceeds from sale of equity securities	0	0	1,797
Purchases of premises and equipment	(1,324)	(2,200)	(3,994)
Proceeds from sale of premises and equipment	0	3,819	0
Proceeds from sale of foreclosed assets	0	114	307
Net Cash Used in Investing Activities	(306,084)	(748,922)	(22,297)
Financing Activities
Net change in deposits	725,977	875,358	(54,218)
Net change in short-term borrowings	43,701	71,617	(20,319)
Exercise of stock options	3,017	2,838	13,699
Retirement of common stock	(232)	(16,496)	(488)
Common stock dividends paid	(44,304)	(44,285)	(43,942)
Net Cash Provided by (Used in) Financing Activities	728,159	889,032	(105,268)
Net Change In Cash and Due from Banks	510,810	247,854	(46,863)
Cash and Due from Banks at Beginning of Period	621,275	373,421	420,284
Cash and Due from Banks at End of Period	1,132,085	621,275	373,421
Supplemental disclosure of noncash activities:
Right-of-use assets acquired in exchange for operating lease liabilities	5,105	7,697	23,587
Amount recognized upon initial adoption of ASU 2016-02	0	0	15,325
Securities purchases pending settlement	0	29,000	0
Supplemental disclosure of cash flow activities:
Cash paid for amounts included in operating lease liabilities	6,309	6,516	5,123
Interest paid for the period	2,027	1,830	1,898
Income tax payments for the period	$ 27,673	$ 26,462	$ 24,491

Note 1 - Business and Accountin

Note 1 - Business and Accounting Policies	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	Note 1: Westamerica Bancorporation, a registered bank holding company (the “Company”), provides a full range of banking services to corporate and individual customers in Northern and Central California through its wholly-owned subsidiary bank, Westamerica Bank (the “Bank”). The Bank is subject to competition from both financial and nonfinancial institutions and to the regulations of certain agencies and undergoes periodic examinations by those regulatory authorities. All of the financial service operations are considered by management to be aggregated in one reportable operating segment. The Company has evaluated events and transactions subsequent to the balance sheet date. Based on this evaluation, the Company is not Impact of COVID- 19 The COVID- 19 first 2020 fourth 2021 may The Bank's deposits are exclusively sourced within California and its loans are primarily to borrowers domiciled within California. Demand for the Bank's products and services, such as loans and deposits, could be affected as a result of the decline in economic activity within the state. The Bank's investment portfolio contains bonds for which the source of repayment is domestic mortgage repayments, domestic municipalities throughout the United States, and domestic and global corporations. The value of the Bank's investment portfolio may In response to the pandemic, the Federal Reserve has engaged significant levels of monetary policy to provide liquidity and credit facilities to the financial markets. On March 15, 2020, 0 0.25 0.10 March 16, 2020, may June 17, 2021, 0.15%. In response to the pandemic, the United States federal government enacted the Coronavirus Aid, Relief, and Economic Security Act (the "CARES Act") on March 27, 2020, $2 $350 2020 first six 2021, December 31, 2021. On April 7, 2020, 19 December 31, 2021, On December 27, 2020, 2020 $900 $284 second The extent of the spread of the coronavirus, its ultimate containment and its continuing effects on the economy and the Company are uncertain at this time. The effectiveness of the Federal Reserve Board's monetary policies and the federal government's fiscal policies in stimulating the United States economy is uncertain at this time. The Company's net interest margin and non-interest income could decline and credit-related losses could increase for an uncertain period given the decline in economic activity occurring due to the coronavirus. The amount of impact on the Company's financial results is uncertain. In addition, the Company's future success and profitability substantially depends upon the skills and experience of its executive officers and directors, many of whom have held positions with the Company for many years. The unanticipated loss or unavailability of key employees due to the outbreak could adversely affect the Company's ability to operate its business or execute its business strategy. There are no 19 may one Summary of Significant Accounting Policies The consolidated financial statements are prepared in conformity with accounting principles generally accepted in the United States of America. The following is a summary of significant policies used in the preparation of the accompanying financial statements. Accounting Estimates. Certain accounting policies underlying the preparation of these financial statements require Management to make estimates, assumptions, and judgments that affect the amounts reported in the financial statements and accompanying notes. These estimates, assumptions, and judgments are based on information available as of the date of the financial statements; accordingly, as this information changes, the financial statements could reflect different estimates, assumptions, and judgments and as such have a greater possibility of producing results that could be materially different than originally reported. Estimates, assumptions, and judgments are necessary when assets and liabilities are required to be recorded at fair value, when a decline in fair value of an asset not third may Principles of Consolidation. The consolidated financial statements include the accounts of the Company and all the Company’s subsidiaries. Significant intercompany transactions have been eliminated in consolidation. The Company does not Cash. Cash includes Due From Banks balances which are readily convertible to known amounts of cash and are generally 90 Equity Securities. Equity securities consist of marketable equity securities and mutual funds which are recorded at fair value. Unrealized gains and losses are included in net income. There were no equity securities at December 31, 2021 December 31, 2020. Debt Securities. Debt securities consist of the U.S. Treasury, securities of government sponsored entities, states, counties, municipalities, corporations, agency and non-agency mortgage-backed securities, collateralized loan obligations and commercial paper. Securities transactions are recorded on a trade date basis. The Company classifies its debt securities in one three not not The Company utilizes third 1 2 third one third third not 3 The Company follows the guidance issued by the Board of Governors of the Federal Reserve System, “Investing in Securities without Reliance on Nationally Recognized Statistical Rating Agencies” (SR 12 15 To the extent that debt securities in the held-to-maturity portfolio share common risk characteristics, estimated expected credit losses are calculated in a manner like that used for loans held for investment. That is, for pools of such securities with common risk characteristics, the historical lifetime probability of default and severity of loss in the event of default is derived or obtained from external sources and adjusted for the expected effects of reasonable and supportable forecasts over the expected lives of the securities on those historical credit losses. Expected credit loss on each security in the held-to-maturity portfolio that do not may not Available for sale debt securities in unrealized loss positions are evaluated for credit related loss at least quarterly. For available for sale debt securities, a decline in fair value due to credit loss results in recording an allowance for credit losses to the extent the fair value is less than the amortized cost basis. Declines in fair value that have not not not not If the Company intends to sell a debt security or more likely than not Purchase premiums are amortized to the earliest call date and purchase discounts are amortized to maturity as an adjustment to yield using the effective interest method. Unamortized premiums, unaccreted discounts, and early payment premiums are recognized as a component of gain or loss on sale upon disposition of the related security. Interest and dividend income are recognized when earned. Realized gains and losses from the sale of available for sale debt securities are included in earnings using the specific identification method. Nonmarketable Equity Securities. Nonmarketable equity securities include securities that are not Loans. Loans are stated at the principal amount outstanding, net of unearned discount and unamortized deferred fees and costs. Interest is accrued daily on the outstanding principal balances and included in other assets. Loans which are more than 90 days delinquent with respect to interest or principal, unless they are well secured and in the process of collection, and other loans on which full recovery of principal or interest is in doubt, are placed on nonaccrual status. Interest previously accrued on loans placed on nonaccrual status is charged against interest income. In addition, some loans secured by real estate and commercial loans to borrowers experiencing financial difficulties are placed on nonaccrual status even though the borrowers continue to repay the loans as scheduled. When the ability to fully collect nonaccrual loan principal is in doubt, payments received are applied against the principal balance of the loans on a cost-recovery method until such time as full collection of the remaining recorded balance is expected. Any additional interest payments received after that time are recorded as interest income on a cash basis. Nonaccrual loans are reinstated to accrual status when none A troubled debt restructuring (“TDR”) occurs when the Company, for reasons related to a borrower’s financial difficulties, grants a concession to the borrower it would not may not 1 2 not 30 December 31, 2019; 3 March 1, 2020, 60 December 31, 2020.The 2021, may not January 1, 2022. Allowance for Credit Losses. The Company extends loans to commercial and consumer customers primarily in Northern and Central California. These lending activities expose the Company to the risk borrowers will default, causing loan losses. The Company’s lending activities are exposed to various qualitative risks. All loan segments are exposed to risks inherent in the economy and market conditions. Significant risk characteristics related to the commercial loan segment include the borrowers’ business performance and financial condition, and the value of collateral for secured loans. Significant risk characteristics related to the commercial real estate segment include the borrowers’ business performance and the value of properties collateralizing the loans. Significant risk characteristics related to the construction loan segment include the borrowers’ performance in successfully developing the real estate into the intended purpose and the value of the property collateralizing the loans. Significant risk characteristics related to the residential real estate segment include the borrowers’ financial wherewithal to service the mortgages and the value of the property collateralizing the loans. Significant risk characteristics related to the consumer loan segment include the financial condition of the borrowers and the value of collateral securing the loans. The preparation of these financial statements requires Management to estimate the amount of expected losses over the expected contractual life of the Bank’s existing loan portfolio and establish an allowance for credit losses. Loan agreements generally include a maturity date, and the Company considers the contractual life of a loan agreement to extend from the date of origination to the contractual maturity date. In estimating credit losses, Management must exercise significant judgment in evaluating information deemed relevant. The amount of ultimate losses on the loan portfolio can vary from the estimated amounts. Management follows a systematic methodology to estimate loss potential in an effort to reduce the differences between estimated and actual losses. The allowance for credit losses is established through provisions for credit losses charged to income. Losses on loans are charged to the allowance for credit losses when all or a portion of the recorded amount of a loan is deemed to be uncollectible. Recoveries of loans previously charged off are credited to the allowance when realized. The Company’s allowance for credit losses is maintained at a level considered adequate to provide for expected losses based on historical loss rates adjusted for current and expected conditions over a forecast period. These include conditions unique to individual borrowers, as well as overall credit loss experience, the amount of past due, nonperforming and classified loans, recommendations of regulatory authorities, prevailing economic conditions, or credit protection agreements and other factors. Loans that share common risk characteristics are segregated into pools based on common characteristics, which is primarily determined by loan, borrower, or collateral type. Historical loss rates are determined for each pool. For consumer installment loans, primarily secured by automobiles, historical loss rates are determined using a vintage methodology, which tracks losses based on period of origination. For commercial, construction, and commercial real estate, historical loss rates are determined using an open pool methodology where losses are tracked over time for all loans included in the pool at the historical measurement date. Historical loss rates are adjusted for factors that are not not two not not two Loans that do not not Accrued interest is recorded in other assets and is excluded from the estimation of expected credit loss. Accrued interest is reversed through interest income when amounts are determined to be uncollectible, which generally occurs when the underlying receivable is placed on nonaccrual status or charged off. Liability for Off-Balance Sheet Credit Exposures. Off-balance sheet credit exposures relate to letters of credit and unfunded loan commitments for commercial, construction and consumer loans. The Company maintains a separate allowance for credit losses from off-balance-sheet credit exposures, which is included within other liabilities on the consolidated statements of financial condition. Increases or reductions to the Company’s allowance for credit losses from off-balance sheet credit exposures are recorded in other expenses. Management estimates the amount of expected losses by estimating expected usage exposures that are not No may Nonrefundable fees and certain costs associated with originating or acquiring loans are deferred and amortized as an adjustment to interest income over the contractual loan lives. Upon prepayment, unamortized loan fees, net of costs, are immediately recognized in interest income. Other fees, including those collected upon principal prepayments, are included in interest income when received. Loans held for sale are identified upon origination and are reported at the lower of cost or market value on an aggregate loan basis. Other Real Estate Owned. Other real estate owned is comprised of property acquired through foreclosure proceedings, acceptances of deeds-in-lieu of foreclosure and, if applicable, vacated bank properties. Losses recognized at the time of acquiring property in full or partial satisfaction of debt are charged against the allowance for credit losses. Other real estate owned is recorded at the fair value of the collateral, generally based upon an independent property appraisal, less estimated disposition costs. Losses incurred subsequent to acquisition due to any decline in annual independent property appraisals are recognized as noninterest expense. Routine holding costs, such as property taxes, insurance and maintenance, and losses from sales and dispositions, are recognized as noninterest expense. Premises and Equipment. Premises and equipment are stated at cost, less accumulated depreciation and amortization. Depreciation is computed substantially on the straight-line method over the estimated useful life of each type of asset. Estimated useful lives of premises and equipment range from 20 to 50 years and from 3 to 20 years, respectively. Leasehold improvements are amortized over the terms of the lease or their estimated useful life, whichever is shorter. Revenue Recognition. The Company recognizes revenue as it is earned based on contractual terms, as transactions occur, or as services are provided and collectability is reasonably assured. In certain circumstances, noninterest income is reported net of associated expenses that are directly related to variable volume-based sales or revenue sharing arrangements or when the Company acts on an agency basis for others. Life Insurance Cash Surrender Value. The Company has purchased life insurance policies on certain directors and officers as well as acquired such assets as part of the acquisition of other banks. Company owned life insurance is recorded at the amount that can be realized under the insurance contract at the balance sheet date, which is the cash surrender value adjusted for other charges or other amounts due that are probable at settlement. These assets are included in other assets on the consolidated balance sheets. Intangible Assets. Intangible assets are comprised of goodwill, core deposit intangibles and other identifiable intangibles acquired in business combinations. Intangible assets with finite useful lives are amortized on an accelerated basis over their respective estimated useful lives not not not not Impairment of Long-Lived Assets. The Company reviews its long-lived and certain intangible assets for impairment whenever events or changes indicate that the carrying amount of an asset may not Income Taxes. The Company and its subsidiaries file consolidated tax returns. The Company accounts for income taxes in accordance with FASB ASC 740, two not. not fifty Stock-based Compensation. The Company applies FASB ASC 718 no Other. Securities and other property held by the Bank in a fiduciary or agency capacity are not not Recently Adopted Accounting Standards In the year ended December 31, 2021, FASB ASU 2019 12 Income Taxes (Topic 740 December 2019. 740 December 15, 2020, January 1, 2021 not In 2020, FASB ASU 2016 13, Financial Instruments Credit Losses (Topic 326 June 16, 2016. The Company adopted the ASU provisions on a modified retrospective basis on January 1, 2020. no The following table summarizes the impact of adoption of ASU 2016 13. January 1, 2020 Balance, Impact of As reported prior to adoption adoption of under of ASU 2016-13 ASU 2016-13 ASU 2016-13 (In thousands) Assets: Allowance for credit losses on loans: Commercial $ 4,959 $ 3,385 $ 8,344 Commercial real estate 4,064 618 4,682 Construction 109 (31 ) 78 Residential real estate 206 (132 ) 74 Consumer and other installment loans 6,445 1,878 8,323 Unallocated 3,701 (3,701 ) - Allowance for credit losses on loans: $ 19,484 $ 2,017 $ 21,501 Allowance for credit losses on debt securities held to maturity - 16 16 Liabilities: Allowance for credit losses for unfunded commitments 2,160 (2,107 ) 53 Recently Issued Accounting Standards FASB ASU 2020 04 Reference Rate Reform (Topic 848 March 2020. no not 2020 04 2020 04 March 12, 2020 December 31, 2022. may 2020 04 January 1, 2020, March 12, 2020, not

Note 2 - Investment Securities

Note 2 - Investment Securities	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]	Note 2: An analysis of the amortized cost and fair value by major categories of debt securities available for sale, which are carried at fair value with net unrealized gains (losses) reported on an after-tax basis as a component of accumulated other comprehensive income, and debt securities held to maturity, which are carried at amortized cost, before allowance for credit losses of $7 thousand at December 31, 2021 December 31, 2020, At December 31, 2021 Gross Gross Amortized Unrealized Unrealized Fair Cost Gains Losses Value (In thousands) Debt securities available for sale Agency residential mortgage-backed securities ("MBS") $ 399,997 $ 11,766 $ (37 ) $ 411,726 Securities of U.S. Government entities 119 - - 119 Obligations of states and political subdivisions 90,107 3,842 (29 ) 93,920 Corporate securities 2,692,792 63,573 (9,630 ) 2,746,735 Collateralized loan obligations 1,385,331 1,743 (719 ) 1,386,355 Total debt securities available for sale 4,568,346 80,924 (10,415 ) 4,638,855 Debt securities held to maturity Agency residential MBS 147,632 3,112 (18 ) 150,726 Non-agency residential MBS 758 2 (19 ) 741 Obligations of states and political subdivisions 158,013 3,082 - 161,095 Total debt securities held to maturity 306,403 6,196 (37 ) 312,562 Total $ 4,874,749 $ 87,120 $ (10,452 ) $ 4,951,417 At December 31, 2020 Gross Gross Amortized Unrealized Unrealized Fair Cost Gains Losses Value (In thousands) Debt securities available for sale Agency residential MBS $ 630,174 $ 22,779 $ (1 ) $ 652,952 Securities of U.S. Government entities 154 - - 154 Obligations of states and political subdivisions 105,679 5,332 (1 ) 111,010 Corporate securities 1,986,995 131,025 (42 ) 2,117,978 Commercial paper 24,983 7 - 24,990 Collateralized loan obligations 1,152,766 4,433 (1,098 ) 1,156,101 Total debt securities available for sale 3,900,751 163,576 (1,142 ) 4,063,185 Debt securities held to maturity Agency residential MBS 240,332 6,852 (32 ) 247,152 Non-agency residential MBS 1,344 26 - 1,370 Obligations of states and political subdivisions 273,922 7,243 - 281,165 Total debt securities held to maturity 515,598 14,121 (32 ) 529,687 Total $ 4,416,349 $ 177,697 $ (1,174 ) $ 4,592,872 The amortized cost and fair value of debt securities by contractual maturity are shown in the following tables at the dates indicated: At December 31, 2021 Debt Securities Available Debt Securities Held for Sale to Maturity Amortized Fair Amortized Fair Cost Value Cost Value (In thousands) Maturity in years: 1 year or less $ 306,333 $ 309,257 $ 15,836 $ 15,941 Over 1 to 5 years 707,062 738,057 125,001 127,539 Over 5 to 10 years 2,320,559 2,347,242 17,176 17,615 Over 10 years 834,395 832,573 - - Subtotal 4,168,349 4,227,129 158,013 161,095 MBS 399,997 411,726 148,390 151,467 Total $ 4,568,346 $ 4,638,855 $ 306,403 $ 312,562 At December 31, 2020 Debt Securities Available Debt Securities Held for Sale to Maturity Amortized Fair Amortized Fair Cost Value Cost Value (In thousands) Maturity in years: 1 year or less $ 212,140 $ 213,715 $ 54,526 $ 54,927 Over 1 to 5 years 922,170 974,438 129,786 133,195 Over 5 to 10 years 1,767,747 1,851,184 89,610 93,043 Over 10 years 368,520 370,896 - - Subtotal 3,270,577 3,410,233 273,922 281,165 MBS 630,174 652,952 241,676 248,522 Total $ 3,900,751 $ 4,063,185 $ 515,598 $ 529,687 Expected maturities of mortgage-related securities can differ from contractual maturities because borrowers have the right to call or prepay obligations with or without call or prepayment penalties. In addition, such factors as prepayments and interest rates may An analysis of the gross unrealized losses of the debt securities available for sale portfolio follows: Debt Securities Available for Sale At December 31, 2021 No. of Less than 12 months No. of 12 months or longer No. of Total Investment Unrealized Investment Unrealized Investment Unrealized Positions Fair Value Losses Positions Fair Value Losses Positions Fair Value Losses ($ in thousands) Agency residential MBS 7 $ 8,900 $ (37 ) 2 $ 47 $ - 9 $ 8,947 $ (37 ) Securities of U.S. - - - 1 119 - 1 119 - Obligations of states 6 2,859 (27 ) 2 669 (2 ) 8 3,528 (29 ) Corporate securities 56 691,555 (9,630 ) - - - 56 691,555 (9,630 ) Collateralized loan 19 208,199 (521 ) 8 51,523 (198 ) 27 259,722 (719 ) Total 88 $ 911,513 $ (10,215 ) 13 $ 52,358 $ (200 ) 101 $ 963,871 $ (10,415 ) An analysis of gross unrecognized losses of the debt securities held to maturity portfolio follows: Debt Securities Held to Maturity At December 31, 2021 No. of Less than 12 months No. of 12 months or longer No. of Total Investment Unrecognized Investment Unrecognized Investment Unrecognized Positions Fair Value Losses Positions Fair Value Losses Positions Fair Value Losses ($ in thousands) Agency residential MBS - $ - $ - 3 $ 530 $ (18 ) 3 $ 530 $ (18 ) Non-agency residential 1 542 (19 ) - - - 1 542 (19 ) Total 1 $ 542 $ (19 ) 3 $ 530 $ (18 ) 4 $ 1,072 $ (37 ) Based upon the most recent evaluation, the unrealized losses on the Company’s debt securities available for sale were most likely caused by market conditions for these types of investments, particularly changes in risk-free interest rates and/or market bid-ask spreads. The Company does not not not not December 31, 2021. The fair values of debt securities available for sale could decline in the future if the general economy deteriorates, inflation increases, credit ratings decline, the issuers’ financial condition deteriorates, or the liquidity for debt securities declines. As a result, significant credit losses on debt securities available for sale may As of December 31, 2021 December 31, 2020, An analysis of the gross unrealized losses of the debt securities available for sale portfolio follows: Debt Securities Available for Sale At December 31, 2020 No. of Less than 12 months No. of 12 months or longer No. of Total Investment Unrealized Investment Unrealized Investment Unrealized Positions Fair Value Losses Positions Fair Value Losses Positions Fair Value Losses ($ in thousands) Agency residential MBS 1 $ 96 $ (1 ) 1 $ 17 $ - 2 $ 113 $ (1 ) Securities of U.S. 1 154 - - - - 1 154 - Obligations of states 2 692 (1 ) - - - 2 692 (1 ) Corporate securities - - - 1 14,963 (42 ) 1 14,963 (42 ) Collateralized loan 36 268,584 (1,098 ) - - - 36 268,584 (1,098 ) Total 40 $ 269,526 $ (1,100 ) 2 $ 14,980 $ (42 ) 42 $ 284,506 $ (1,142 ) An analysis of gross unrecognized losses of the debt securities held to maturity portfolio follows: Debt Securities Held to Maturity At December 31, 2020 No. of Less than 12 months No. of 12 months or longer No. of Total Investment Unrecognized Investment Unrecognized Investment Unrecognized Positions Fair Value Losses Positions Fair Value Losses Positions Fair Value Losses ($ in thousands) Agency residential MBS 3 $ 377 $ (1 ) 3 $ 788 $ (31 ) 6 $ 1,165 $ (32 ) The Company evaluates debt securities on a quarterly basis including changes in security ratings issued by rating agencies, changes in the financial condition of the issuer, and, for mortgage-backed and asset-backed securities, collateral levels, delinquency and loss information with respect to the underlying collateral, changes in the levels of subordination for the Company’s particular position within the repayment structure and remaining credit enhancement as compared to expected credit losses of the security. In addition to monitoring credit rating agency evaluations, Management performs its own evaluations regarding the credit worthiness of the issuer or the securitized assets underlying asset backed securities. The following table presents the activity in the allowance for credit losses for debt securities held to maturity: For the Year Ended December 31, 2021 2020 (In thousands) Allowance for credit losses: Balance, end of prior period $ 9 $ - Impact of adopting ASU 2016-13 - 16 Beginning balance 9 16 Reversal of provision (2 ) (7 ) Chargeoffs - - Recoveries - - Total ending balance $ 7 $ 9 Agency mortgage-backed securities were assigned no The following table summarizes the amortized cost of debt securities held to maturity at December 31, 2021, Credit Risk Profile by Credit Rating At December 31, 2021 AAA/AA/A B- Not Rated Total (In thousands) Agency residential MBS $ 177 $ - $ 147,455 $ 147,632 Non-agency residential MBS 149 561 48 758 Obligations of states and political subdivisions 155,268 - 2,745 158,013 Total $ 155,594 $ 561 $ 150,248 $ 306,403 There were no 30 December 31, 2021. The following table provides information about the amount of interest income earned on investment securities which is fully taxable and which is exempt from federal income tax: For the Years Ended December 31, 2021 2020 2019 (In thousands) Taxable $ 106,329 $ 93,163 $ 77,800 Tax-exempt from regular federal income tax 8,424 12,151 15,736 Total interest income from investment securities $ 114,753 $ 105,314 $ 93,536

Note 3 - Loans and Allowance fo

Note 3 - Loans and Allowance for Credit Losses	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]	Note 3: A summary of the major categories of loans outstanding is shown in the following tables at the dates indicated. At December 31, 2021 2020 (In thousands) Commercial: Paycheck Protection Program ("PPP") loans $ 45,888 $ 186,945 Other 187,202 207,861 Total Commercial 233,090 394,806 Commercial Real Estate 535,261 564,300 Construction 48 129 Residential Real Estate 18,133 23,471 Consumer Installment & Other 281,594 273,537 Total $ 1,068,126 $ 1,256,243 PPP loans are guaranteed by the Small Business Administration (“SBA”). PPP loan proceeds used for eligible payroll and certain other operating costs are eligible for forgiveness, with repayment of loan principal and accrued interest made by the SBA. Management does not no 2019. Allowance for Credit Losses For the Year Ended December 31, 2021 Consumer Commercial Residential Installment Commercial Real Estate Construction Real Estate and Other Total (In thousands) Allowance for credit losses: Balance at beginning of period $ 9,205 $ 5,660 $ 6 $ 47 $ 8,936 $ 23,854 (Reversal) provision (2,411 ) 126 (4 ) (2 ) 2,293 2 Chargeoffs (56 ) - - - (3,192 ) (3,248 ) Recoveries 228 743 - - 1,935 2,906 Total allowance for credit losses $ 6,966 $ 6,529 $ 2 $ 45 $ 9,972 $ 23,514 Allowance for Credit Losses For the Year Ended December 31, 2020 Consumer Commercial Residential Installment Commercial Real Estate Construction Real Estate and Other Unallocated Total (In thousands) Allowance for credit losses: Balance at beginning of period, prior to adoption of ASU 2016-13 $ 4,959 $ 4,064 $ 109 $ 206 $ 6,445 $ 3,701 $ 19,484 Impact of adopting ASU 2016-13 3,385 618 (31 ) (132 ) 1,878 (3,701 ) 2,017 Adjusted beginning balance 8,344 4,682 78 74 8,323 - 21,501 Provision (reversal) 746 929 (72 ) (27 ) 2,731 - 4,307 Chargeoffs (236 ) - - - (3,963 ) - (4,199 ) Recoveries 351 49 - - 1,845 - 2,245 Total allowance for credit losses $ 9,205 $ 5,660 $ 6 $ 47 $ 8,936 $ - $ 23,854 Allowance for Loan Losses For the Twelve Months Ended December 31, 2019 Consumer Commercial Residential Installment Commercial Real Estate Construction Real Estate and Other Unallocated Total (In thousands) Allowance for loan losses: Balance at beginning of period $ 6,311 $ 3,884 $ 1,465 $ 869 $ 5,645 $ 3,177 $ 21,351 (Reversal) provision (2,023 ) (16 ) (1,356 ) (663 ) 3,534 524 - Chargeoffs (97 ) - - - (4,473 ) - (4,570 ) Recoveries 768 196 - - 1,739 - 2,703 Total allowance for loan losses $ 4,959 $ 4,064 $ 109 $ 206 $ 6,445 $ 3,701 $ 19,484 The Company’s customers are small businesses, professionals and consumers. Given the scale of these borrowers, corporate credit rating agencies do not The following summarizes the credit risk profile by internally assigned grade: Credit Risk Profile by Internally Assigned Grade At December 31, 2021 Commercial Commercial Real Estate Construction Residential Real Estate Consumer Installment and Other Total (In thousands) Grade: Pass $ 232,710 $ 521,300 $ 48 $ 16,874 $ 278,922 $ 1,049,854 Substandard 380 13,961 - 1,259 1,207 16,807 Doubtful - - - - 931 931 Loss - - - - 534 534 Total $ 233,090 $ 535,261 $ 48 $ 18,133 $ 281,594 $ 1,068,126 Credit Risk Profile by Internally Assigned Grade At December 31, 2020 Commercial Commercial Real Estate Construction Residential Real Estate Consumer Installment and Other Total (In thousands) Grade: Pass $ 386,144 $ 545,398 $ 129 $ 22,105 $ 270,925 $ 1,224,701 Substandard 8,662 18,902 - 1,366 1,498 30,428 Doubtful - - - - 543 543 Loss - - - - 571 571 Total $ 394,806 $ 564,300 $ 129 $ 23,471 $ 273,537 $ 1,256,243 The following tables summarize loans by delinquency and nonaccrual status: Summary of Loans by Delinquency and Nonaccrual Status At December 31, 2021 Current and Accruing 30-59 Days Past Due and Accruing 60-89 Days Past Due and Accruing Past Due 90 Days or More and Accruing Nonaccrual Total Loans (In thousands) Commercial $ 232,444 $ 383 $ 263 $ - $ - $ 233,090 Commercial real estate 534,748 223 - - 290 535,261 Construction 48 - - - - 48 Residential real estate 17,855 141 - - 137 18,133 Consumer installment and other 276,793 3,184 1,013 339 265 281,594 Total $ 1,061,888 $ 3,931 $ 1,276 $ 339 $ 692 $ 1,068,126 Summary of Loans by Delinquency and Nonaccrual Status At December 31, 2020 Current and Accruing 30-59 Days Past Due and Accruing 60-89 Days Past Due and Accruing Past Due 90 Days or More and Accruing Nonaccrual Total Loans (In thousands) Commercial $ 394,004 $ 713 $ 6 $ - $ 83 $ 394,806 Commercial real estate 560,580 - - - 3,720 564,300 Construction 129 - - - - 129 Residential real estate 22,269 770 271 - 161 23,471 Consumer installment and other 270,240 2,010 472 450 365 273,537 Total $ 1,247,222 $ 3,493 $ 749 $ 450 $ 4,329 $ 1,256,243 There was no allowance for credit losses allocated to loans on nonaccrual status as of December 31, 2021 December 31, 2020. December 31, 2021 December 31, 2020. The following tables provide information on impaired loans during the year ended December 31, 2019: Impaired Loans For the Year Ended December 31, 2019 Average Recognized Recorded Interest Investment Income (In thousands) Commercial $ 8,412 $ 140 Commercial real estate 7,428 139 Residential real estate 191 3 Consumer installment and other 44 1 Total $ 16,075 $ 283 The following tables provide information on troubled debt restructurings (TDRs): Troubled Debt Restructurings At December 31, 2021 Period-End Individual Number of Pre-Modification Period-End Credit Loss Contracts Carrying Value Carrying Value Allowance ($ in thousands) Commercial real estate 2 $ 2,785 $ 1,793 $ - Residential real estate 1 241 172 - Total 3 $ 3,026 $ 1,965 $ - Troubled Debt Restructurings At December 31, 2020 Period-End Individual Number of Pre-Modification Period-End Credit Loss Contracts Carrying Value Carrying Value Allowance ($ in thousands) Commercial real estate 6 $ 8,367 $ 6,040 $ - Residential real estate 1 241 181 - Total 7 $ 8,608 $ 6,221 $ - During the year ended December 31 2021 December 31, 2020, not 4013 19 December 31, 2021 December 31, 2020, 4013 90 December 31, 2021, not December 31, 2020, December 31, 2020, no December 31, 2021 December 31, 2020. December 31, 2021 December 31, 2020, 12 90 TDRs of $1,965 thousand included no loans on nonaccrual status at December 31, 2021. December 31, 2020; A loan is considered collateral dependent when the borrower is experiencing financial difficulty and repayment is expected to be provided substantially through the operation or sale of the collateral. The following loans were considered collateral dependent at December 31, 2021: one no December 31, 2021. December 31, 2020: two no December 31, 2020. Based on the most recent analysis performed, the risk category of loans by class of loans is as follows: At December 31, 2021 Revolving Loans Term Loans Amortized Cost Basis by Origination Year Total Amortized Prior 2017 2018 2019 2020 2021 Term Loans Cost Basis Total (In thousands) Commercial loans by grade Pass $ 34,784 $ 3,999 $ 8,690 $ 16,919 $ 30,694 $ 98,799 $ 193,885 $ 38,825 $ 232,710 Substandard 32 - - - - 57 89 291 380 Doubtful - - - - - - - - - Loss - - - - - - - - - Total $ 34,816 $ 3,999 $ 8,690 $ 16,919 $ 30,694 $ 98,856 $ 193,974 $ 39,116 $ 233,090 At December 31, 2021 Revolving Loans Term Loans Amortized Cost Basis by Origination Year Total Amortized Prior 2017 2018 2019 2020 2021 Term Loans Cost Basis Total (In thousands) Commercial real estate loans by grade Pass $ 116,181 $ 87,921 $ 78,200 $ 78,647 $ 83,642 $ 76,709 $ 521,300 $ - $ 521,300 Substandard 10,993 - - 2,016 823 129 13,961 - 13,961 Doubtful - - - - - - - - - Loss - - - - - - - - - Total $ 127,174 $ 87,921 $ 78,200 $ 80,663 $ 84,465 $ 76,838 $ 535,261 $ - $ 535,261 At December 31, 2021 Revolving Loans Term Loans Amortized Cost Basis by Origination Year Total Amortized Prior 2017 2018 2019 2020 2021 Term Loans Cost Basis Total (In thousands) Construction loans by grade Pass $ - $ - $ - $ - $ - $ - $ - $ 48 $ 48 Substandard - - - - - - - - - Doubtful - - - - - - - - - Loss - - - - - - - - - Total $ - $ - $ - $ - $ - $ - $ - $ 48 $ 48 At December 31, 2021 Revolving Loans Term Loans Amortized Cost Basis by Origination Year Total Amortized Prior 2017 2018 2019 2020 2021 Term Loans Cost Basis Total (In thousands) Residential Real Estate loans by grade Pass $ 16,874 $ - $ - $ - $ - $ - $ 16,874 $ - $ 16,874 Substandard 1,259 - - - - - 1,259 - 1,259 Doubtful - - - - - - - - - Loss - - - - - - - - - Total $ 18,133 $ - $ - $ - $ - $ - $ 18,133 $ - $ 18,133 The Company considers the delinquency and nonaccrual status of the consumer loan portfolio and its impact on the allowance for credit losses. The following table presents the amortized cost in consumer installment and other loans based on delinquency and nonaccrual status: At December 31, 2021 Revolving Loans Term Loans Amortized Cost Basis by Origination Year Total Amortized Prior 2017 2018 2019 2020 2021 Term Loans Cost Basis Total (In thousands) Consumer installment and other loans by delinquency and nonaccrual status Current $ 7,884 $ 10,162 $ 25,932 $ 37,999 $ 58,178 $ 113,899 $ 254,054 $ 22,739 $ 276,793 30-59 days past due 197 139 634 504 662 1,034 3,170 14 3,184 60-89 days past due 5 20 156 150 186 408 925 88 1,013 Past due 90 days or more 1 17 81 62 109 40 310 29 339 Nonaccrual - - - - - - - 265 265 Total $ 8,087 $ 10,338 $ 26,803 $ 38,715 $ 59,135 $ 115,381 $ 258,459 $ 23,135 $ 281,594 There were no loans held for sale at December 31, 2021, December 31, 2020. The Company held no other real estate owned (OREO) at December 31, 2021 December 31, 2020. December 31, 2021 December 31, 2020.

Note 4 - Concentration of Credi

Note 4 - Concentration of Credit Risk	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Concentration Risk Disclosure [Text Block]	Note 4: Under the California Financial Code, credit extended to any one one not not not December 31, 2021, not one December 31, 2021, 3, December 31, 2021 December 31, 2020, no no December 31, 2021,

Note 5 - Premises, Equipment, O

Note 5 - Premises, Equipment, Other Assets and Other Liabilities	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Other Assets Disclosure [Text Block]	Note 5: Premises and equipment consisted of the following: At December 31, Cost Accumulated Depreciation and Amortization Net Book Value (In thousands) 2021 Land $ 11,453 $ - $ 11,453 Building and improvements 43,009 (30,069 ) 12,940 Leasehold improvements 7,567 (5,967 ) 1,600 Furniture and equipment 26,642 (21,480 ) 5,162 Total $ 88,671 $ (57,516 ) $ 31,155 2020 Land $ 11,453 $ - $ 11,453 Building and improvements 42,960 (28,922 ) 14,038 Leasehold improvements 6,944 (5,528 ) 1,416 Furniture and equipment 26,227 (20,321 ) 5,906 Total $ 87,584 $ (54,771 ) $ 32,813 Depreciation and amortization of premises and equipment included in noninterest expense amounted to $2,978 thousand in 2021, 2020 2019. Other assets consisted of the following: At December 31, 2021 2020 (In thousands) Cost method equity investments: Federal Reserve Bank stock (1) $ 14,069 $ 14,069 Other investments 158 158 Total cost method equity investments 14,227 14,227 Life insurance cash surrender value 63,107 60,444 Right-of-use asset 17,980 18,832 Limited partnership investments 37,145 18,335 Interest receivable 35,521 33,022 Prepaid assets 4,757 4,572 Other assets 12,678 10,471 Total other assets $ 185,415 $ 159,903 ( 1 A bank applying for membership in the Federal Reserve System is required to subscribe to stock in the Federal Reserve Bank (FRB) in its district in a sum equal to six The Company owns 211 thousand shares of Visa Inc. class B common stock which have transfer restrictions; the carrying value is $-0- thousand. On January 28, 2022, 10 December 31, 2021. December 29, 2021. December 31, 2021, fourth 2021. The Company invests in flow-through limited liability entities that manage or invest in affordable housing projects that qualify for low-income housing tax credits. At December 31, 2021, December 31, 2020, December 31, 2021, 2022, 2023, 2024, 2025, 2026, 2027, 2028 The amounts recognized in net income for these investments include: For the Years Ended December 31, 2021 2020 2019 (In thousands) Investment loss included in pre-tax income $ 2,620 $ 2,440 $ 2,400 Tax credits recognized in provision for income taxes 2,300 900 875 Other liabilities consisted of the following: At December 31, 2021 2020 (In thousands) Net deferred tax liability $ 2,501 $ 25,778 Operating lease liability 17,980 18,832 Securities purchases pending settlement - 29,000 Other liabilities 53,241 38,988 Total other liabilities $ 73,722 $ 112,598 The Company has entered into leases for most branch locations and certain other offices that were classified as operating leases primarily with original terms of five one five not not not December 31, 2021. As of December 31, 2021, December 31, 2021. not December 31, 2021. Total lease costs during the year ended December 31, 2021 December 31, 2020, not December 31, 2021 December 31, 2020. The following table summarizes the remaining lease payments of operating lease liabilities: Minimum At December 31, 2021 (In thousands) 2022 $ 5,698 2023 4,984 2024 3,393 2025 2,201 2026 786 Thereafter 1,478 Total minimum lease payments 18,540 Less: discount (560 ) Present value of lease liability $ 17,980 See Note 10

Note 6 - Goodwill and Identifia

Note 6 - Goodwill and Identifiable Intangible Assets	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Goodwill and Intangible Assets Disclosure [Text Block]	Note 6: The Company has recorded goodwill and other identifiable intangibles associated with purchase business combinations. Goodwill is not not December 31, 2021 December 31, 2020. December 31, 2021 December 31, 2020, The carrying values of goodwill were: At December 31, 2021 At December 31, 2020 (In thousands) Goodwill $ 121,673 $ 121,673 The gross carrying amount of identifiable intangible assets and accumulated amortization was: At December 31, 2021 At December 31, 2020 Gross Gross Carrying Accumulated Carrying Accumulated Amount Amortization Amount Amortization (In thousands) Core deposit intangibles $ 56,808 $ (55,973 ) $ 56,808 $ (55,704 ) As of December 31, 2021, 2025, Total Core Deposit Intangibles (In thousands) For the year ended Decptember 31, 2021 (actual) $ 269 Estimate for year ending December 31, 2022 252 2023 236 2024 222 2025 125

Note 7 - Deposits and Borrowed

Note 7 - Deposits and Borrowed Funds	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Deposits and Borrowed Funds [Text Block]	Note 7: The following table provides additional detail regarding deposits. Deposits At December 31, At December 31, 2021 2020 (In thousands) Noninterest-bearing $ 3,069,080 $ 2,725,177 Interest-bearing: Transaction 1,260,869 1,102,601 Savings 1,940,395 1,703,812 Time deposits less than $100 thousand 72,527 79,825 Time deposits $100 thousand through $250 thousand 47,666 49,323 Time deposits more than $250 thousand 23,419 27,241 Total deposits $ 6,413,956 $ 5,687,979 Demand deposit overdrafts of $611 thousand and $682 thousand were included as loan balances at December 31, 2021 December 31, 2020, $100 2021, 2020 2019. The following table provides additional detail regarding short-term borrowed funds. Repurchase Agreements (Sweep) Remaining Contractual Maturity of the Agreements Overnight and Continuous At December 31, At December 31, 2021 2020 Repurchase agreements: (In thousands) Collateral securing borrowings: Agency residential MBS $ 42,295 $ 67,019 Corporate securities 254,005 188,195 Total collateral carrying value $ 296,300 $ 255,214 Total short-term borrowed funds $ 146,246 $ 102,545 For the Years Ended December 31, 2021 2020 Highest Balance at Any Month-end (In thousands) Securities sold under repurchase agreements $ 146,552 $ 110,846

Note 8 - Shareholders' Equity

Note 8 - Shareholders' Equity	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Stockholders' Equity Note Disclosure [Text Block]	Note 8: Equity The Company grants stock options and restricted performance shares to employees in exchange for employee services, pursuant to the shareholder-approved 2019 2019 April 25, 2019, 1995 2012. three ten three three The following table summarizes information about stock options granted under the Plan as of December 31, 2021. December 31, 2021 December 31, 2021 Options Outstanding Options Exercisable At December 31, 2021 For the Year Ended December 31, 2021 At December 31, 2021 For the Year Ended December 31, 2021 Range of Exercise Price Number Outstanding Aggregate Intrinsic Value Weighted Average Remaining Contractual Life Weighted Average Exercise Price Number Exercisable Aggregate Intrinsic Value Weighted Average Remaining Contractual Life Weighted Average Exercise Price (In thousands) (Years) (In thousands) (Years) 400 -455 34 $ 527 3.8 $ 42 34 $ 527 3.8 $ 42 45 - 50 - - - - - - - - 50 - 55 15 67 2.1 53 15 67 2.1 53 55 - 60 260 161 7.8 57 83 46 5.1 57 60 - 65 316 6.6 62 258 6.5 62 65 - 70 168 - 8.1 66 56 - 8 66 400 -700 793 $ 755 7.1 60 446 $ 640 6.1 60 The Company applies the Roll-Geske option pricing model (Modified Roll) to determine grant date fair value of stock option grants. This model modifies the Black-Scholes Model to take into account dividends and American options. During the year ended December 31, 2021, 2020 2019, For the Years Ended December 31, 2021 2020 2019 Expected volatility (1) 20 % 20 % 20 % Expected life in years (2) 4.7 3.5 4.7 Risk-free interest rate (3) 0.46 % 1.52 % 2.67 % Expected dividend yield 2.79 % 2.59 % 2.55 % Fair value per award $ 7.50 $ 8.64 $ 10.19 ( 1 Measured using daily price changes of Company’s stock over respective expected term of the option and the implied volatility derived from the market prices of the Company’s stock and traded options. ( 2 The number of years that the Company estimates that the options will be outstanding prior to exercise. ( 3 The risk-free rate over the expected life based on the US Treasury yield curve in effect at the time of the grant. Employee stock option grants are being expensed by the Company over the grants’ three December 31, 2021 A summary of option activity during the year ended December 31, 2021 Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (In thousands) (Years) Outstanding at January 1, 2021 693 $ 61.25 Granted 193 57.08 Exercised (53 ) 56.82 Forfeited or expired (40 ) 62.14 Outstanding at December 31, 2021 793 60.48 7.1 Exercisable at December 31, 2021 446 60.07 6.1 A summary of the Company’s nonvested option activity during the year ended December 31, 2021 Shares Weighted Average Grant Date Fair Value (In thousands) Nonvested at January 1, 2021 373 $ 9.39 Granted 193 7.50 Vested (185 ) 9.61 Forfeited (34 ) 8.42 Nonvested at December 31, 2021 347 $ 8.31 The estimated grant date fair value for options granted under the Company’s stock option plan during the twelve December 31, 2021, 2020 2019 December 31, 2021 The total intrinsic value of options exercised during the twelve December 31, 2021, 2020 2019 twelve December 31, 2021, 2020 2019 twelve December 31, 2021, 2020 2019 twelve 2021, twelve 2020, twelve 2019, 2021, 2020 2019. A summary of the status of the Company’s restricted performance shares as of December 31, 2021 2020 twelve 2021 2020 (In thousands) Outstanding at January 1, 28 27 Granted 13 10 Issued upon vesting (9 ) (9 ) Forfeited (2 ) - Outstanding at December 31, 30 28 As of December 31, 2021 2020, December 31, 2021, 2020 2019, December 31, 2021 2020. On February 13, 2009, may not January 29, 2019, The Company repurchases and retires its common stock in accordance with Board of Directors approved share repurchase programs. At December 31, 2021, Shareholders have authorized two additional classes of stock of one million December 31, 2021,

Note 9 - Regulatory Capital

Note 9 - Regulatory Capital	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Regulatory Capital Requirements under Banking Regulations [Text Block]	Note 9: Banks and bank holding companies are subject to regulatory capital requirements administered by federal banking agencies. Capital adequacy guidelines and, additionally for banks, prompt corrective action regulations, involve quantitative measures of assets, liabilities, and certain off-balance-sheet items calculated under regulatory accounting practices. Capital amounts and classifications are also subject to qualitative judgments by regulators. Failure to meet capital requirements can result in regulatory action. The Basel Committee on Banking Supervision’s capital guidelines for U.S. banks (Basel III rules) require the Company to maintain a capital conservation buffer of 2.5% above the adequately capitalized risk-based capital ratios to avoid restrictions on dividends and equity repurchases and other payments such as discretionary bonuses to executive officers. The net unrealized gain or loss on available for sale securities is not December 31, 2021 December 31, 2020, Prompt corrective action regulations provide five not 2021 2020, no The capital ratios for the Company and the Bank as of the dates indicated are presented in the table below. For Common Equity Tier 1 1 2.5% At December 31, 2021 Required To Be Well-capitalized Amount Ratio Amount Ratio Amount Ratio ($ in thousands) Common Equity Tier 1 Capital Company $ 653,026 14.93 % $ 306,277 7.00 % N/A N/A Bank 540,538 12.48 % 303,111 7.00 % $ 281,460 6.50 % Tier 1 Capital Company 653,026 14.93 % 371,908 8.50 % N/A N/A Bank 540,538 12.48 % 368,063 8.50 % 346,412 8.00 % Total Capital Company 676,749 15.47 % 459,416 10.50 % N/A N/A Bank 570,260 13.17 % 454,666 10.50 % 433,016 10.00 % Leverage Ratio (1) Company 653,026 9.06 % 288,423 4.00 % N/A N/A Bank 540,538 7.55 % 286,432 4.00 % 358,040 5.00 % ( 1 The leverage ratio consists of Tier 1capital At December 31, 2020 Required To Be Well-capitalized Amount Ratio Amount Ratio Amount Ratio ($ in thousands) Common Equity Tier 1 Capital Company $ 604,833 16.04 % $ 263,903 7.00 % N/A N/A Bank 484,270 13.00 % 260,755 7.00 % $ 242,130 6.50 % Tier 1 Capital Company 604,833 16.04 % 320,454 8.50 % N/A N/A Bank 484,270 13.00 % 316,632 8.50 % 298,006 8.00 % Total Capital Company 628,797 16.68 % 395,855 10.50 % N/A N/A Bank 514,234 13.80 % 391,133 10.50 % 372,508 10.00 % Leverage Ratio (1) Company 604,833 9.40 % 257,488 4.00 % N/A N/A Bank 484,270 7.58 % 255,560 4.00 % 319,451 5.00 % ( 1 The leverage ratio consists of Tier 1capital

Note 10 - Income Taxes

Note 10 - Income Taxes	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Income Tax Disclosure [Text Block]	Note 10: Deferred tax assets and liabilities are recognized for future tax consequences attributable to differences between the amounts reported in the financial statements of existing assets and liabilities and their respective tax basis and operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. Amounts for the current year are based upon estimates and assumptions as of the date of these financial statements and could vary significantly from amounts shown on the tax returns as filed. Net deferred tax assets are included with other assets in the consolidated balance sheets. The components of the net deferred tax liability are as follows: At December 31, 2021 2020 (In thousands) Deferred tax asset Allowance for credit losses $ 6,852 $ 6,789 State franchise taxes 2,518 2,262 Deferred compensation 4,524 4,789 Purchased assets and assumed liabilities 475 552 Post-retirement benefits 445 480 Employee benefit accruals 2,792 2,353 VISA Class B shares 348 284 Limited partnership investments - 1,066 Impaired capital assets 2,673 2,429 Accrued liabilities 748 416 Premises and equipment 1,001 585 Lease liability 5,263 5,513 Other 103 800 Sub total deferred tax asset 27,742 28,318 Tax valuation (1,776 ) - Total deferred tax asset 25,966 28,318 Deferred tax liability Net deferred loan fees 196 106 Securities available for sale 20,845 48,021 Right-of-use asset 5,263 5,513 Intangible assets 459 456 Limited partnership investments 1,704 - Total deferred tax liability 28,467 54,096 Net deferred tax liability $ (2,501 ) $ (25,778 ) At December 31, 2021 December 31, 2020, five December 31, 2021 December 31, 2020, The provision for federal and state income taxes consists of amounts currently payable and amounts deferred as follows: For the Years Ended December 31, 2021 2020 2019 (In thousands) Current income tax expense: Federal $ 15,299 $ 15,982 $ 11,570 State 11,320 10,654 9,595 Total current 26,619 26,636 21,165 Deferred income tax expense (benefit): Federal 1,281 (538 ) 2,411 State 842 292 982 Total deferred 2,123 (246 ) 3,393 Change in valuation reserve: Federal (472 ) - (71 ) State 2,248 - 340 Total change in valuation reserve 1,776 - 269 Provision for income taxes $ 30,518 $ 26,390 $ 24,827 The provision for income taxes differs from the provision computed by applying the statutory federal income tax rate to income before taxes, as follows: For the Years Ended December 31, 2021 2020 2019 (In thousands) Federal income taxes due at statutory rate $ 24,576 $ 22,429 $ 22,095 Additions (reductions) in income taxes resulting from: Interest on state and municipal securities and loans not taxable for federal income tax purposes (2,070 ) (2,808 ) (3,584 ) State franchise taxes, net of federal income tax benefit 9,757 8,647 8,625 Change in valuation reserve 1,776 - 269 Stock compensation deduction in excess of book expense - (62 ) (312 ) Tax credits (2,621 ) (1,061 ) (1,040 ) Dividend received deduction (48 ) (44 ) (38 ) Cash value life insurance (389 ) (383 ) (464 ) Other (463 ) (328 ) (724 ) Provision for income taxes $ 30,518 $ 26,390 $ 24,827 At December 31, 2021 December 31, 2020, The Company classifies interest and penalties as a component of the provision for income taxes. For tax years 2021 2020, December 31, 2021, December 31, 2020, 2019 2018 December 31, 2020, 2019, 2018 2017

Note 11 - Fair Value Measuremen

Note 11 - Fair Value Measurements	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Fair Value Disclosures [Text Block]	Note 11: The Company uses fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. Debt securities available for sale are recorded at fair value on a recurring basis. Additionally, from time to time, the Company may In accordance with the Fair Value Measurement and Disclosure topic of the FASB Accounting Standards Codification, the Company bases its fair values on the price that would be received to sell an asset or paid to transfer a liability in the principal market or most advantageous market for an asset or liability in an orderly transaction between market participants on the measurement date under current market conditions. A fair value measurement reflects all of the assumptions that market participants would use in pricing the 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. The Company groups its assets and liabilities measured at fair value into a three Level 1 1 Level 2 not 2 Level 3 not The Company relies on independent vendor pricing services to measure fair value for equity securities, debt securities available for sale and debt securities held to maturity. The Company employs three may not The Company regularly reviews the valuation techniques and assumptions used by its vendors and determines which valuation techniques are utilized based on observable market inputs for the type of securities being measured. The Company uses the information to determine the placement in the fair value hierarchy as level 1, 2 3. Assets Recorded at Fair Value on a Recurring Basis The tables below present assets measured at fair value on a recurring basis on the dates indicated. At December 31, 2021 Fair Value Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs (1) (In thousands) Debt securities available for sale Agency residential mortgage-backed securities (MBS) $ 411,726 $ - $ 411,726 $ - Securities of U.S. Government entities 119 - 119 - Obligations of states and political subdivisions 93,920 - 93,920 - Corporate securities 2,746,735 - 2,746,735 - Collateralized loan obligations 1,386,355 - 1,386,355 - Total debt securities available for sale $ 4,638,855 $ - $ 4,638,855 $ - ( 1 There were no 3 December 31, 2021. At December 31, 2020 Fair Value Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs (1) (In thousands) Debt securities available for sale Agency residential MBS $ 652,952 $ - $ 652,952 $ - Securities of U.S. Government entities 154 - 154 - Obligations of states and political subdivisions 111,010 - 111,010 - Corporate securities 2,117,978 - 2,117,978 - Commercial paper 24,990 - 24,990 - Collateralized loan obligations 1,156,101 - 1,156,101 - Total debt securities available for sale $ 4,063,185 $ - $ 4,063,185 $ - ( 1 There were no 3 December 31, 2020. Assets Recorded at Fair Value on a Nonrecurring Basis The Company may December 31, 2021 December 31, 2020, For the Year Ended At December 31, 2021 December 31, 2021 Carrying Value Level 1 Level 2 Level 3 Total Losses (In thousands) Loans: Commercial real estate $ 225 $ - $ - $ 225 $ - Residential real estate 172 - - 172 - Total assets measured at fair value on a nonrecurring basis $ 397 $ - $ - $ 397 $ - For the Year Ended At December 31, 2020 December 31, 2020 Carrying Value Level 1 Level 2 Level 3 Total Losses (In thousands) Loans: Commercial $ 5,270 $ - $ - $ 5,270 $ - Commercial real estate 3,710 - - 3,710 - Residential real estate 181 - - 181 - Total assets measured at fair value on a nonrecurring basis $ 9,161 $ - $ - $ 9,161 $ - Level 3 third not not Disclosures about Fair Value of Financial Instruments The tables below are a summary of fair value estimates for financial instruments and the level of the fair value hierarchy within which the fair value measurements are categorized, excluding financial instruments recorded at fair value on a recurring basis. The values assigned do not may not may The Company has not not not not At December 31, 2021 Carrying Amount Estimated Fair Value Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Financial Assets: (In thousands) Cash and due from banks $ 1,132,085 $ 1,132,085 $ 1,132,085 $ - $ - Debt securities held to maturity 306,396 312,562 - 312,562 - Loans 1,044,612 1,059,072 - - 1,059,072 Financial Liabilities: Deposits $ 6,413,956 $ 6,413,244 $ - $ 6,270,344 $ 142,900 Short-term borrowed funds 146,246 146,246 - 146,246 - At December 31, 2020 Carrying Amount Estimated Fair Value Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Financial Assets: (In thousands) Cash and due from banks $ 621,275 $ 621,275 $ 621,275 $ - $ - Debt securities held to maturity 515,589 529,678 - 529,678 - Loans 1,232,389 1,290,938 - - 1,290,938 Financial Liabilities: Deposits $ 5,687,979 $ 5,688,049 $ - $ 5,531,590 $ 156,459 Short-term borrowed funds 102,545 102,545 - 102,545 - The majority of the Company’s standby letters of credit and other commitments to extend credit carry current market interest rates if converted to loans. No

Note 12 - Commitments and Conti

Note 12 - Commitments and Contingent Liabilities	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	Note 12: Loan commitments are agreements to lend to a customer provided there is no not December 31, 2021. not December 31, 2021 December 31, 2020. December 31, 2021 December 31, 2020. December 31, 2021 December 31, 2020. 3 rd December 31, 2021 December 31, 2020. December 31, 2021, not December 31, 2020. The Company determined that it will be obligated to provide refunds of revenue recognized in years prior to 2018 2017; second 2019, December 31, 2021 December 31, 2020, December 31, 2021 Due to the nature of its business, the Company is subject to various threatened or filed legal cases. Based on the advice of legal counsel, the Company does not

Note 13 - Retirement Benefit Pl

Note 13 - Retirement Benefit Plans	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Retirement Benefits [Text Block]	Note 13: The Company sponsors a qualified defined contribution Deferred Profit-Sharing Plan covering substantially all of its salaried employees with one 2021, 2020 2019. The Company also sponsors a qualified defined contribution Tax Deferred Savings/Retirement Plan (ESOP) covering salaried employees who become eligible to participate upon completion of a 90 may one 2021, 2020 2019. The Company offers a continuation of group insurance coverage to eligible employees electing early retirement, for the period from the date of retirement until age 65. 65 February 1, 2006 January 1, 2021. December 31 The following tables set forth the net periodic post-retirement benefit cost and the change in the benefit obligation for the year ended December 31 December 31: Net Periodic Benefit Cost At December 31, 2021 2020 2019 (In thousands) Service benefit $ (15 ) $ (35 ) $ (57 ) Interest cost 30 52 72 Net periodic cost $ 15 $ 17 $ 15 Obligation and Funded Status At December 31, 2021 2020 2019 Change in benefit obligation (In thousands) Benefit obligation at beginning of year $ 1,654 $ 1,782 $ 1,913 Service benefit (15 ) (35 ) (57 ) Interest cost 30 52 72 Benefits paid (142 ) (145 ) (146 ) Benefit obligation at end of year $ 1,527 $ 1,654 $ 1,782 Accumulated post-retirement benefit obligation attributable to: Retirees $ 1,527 $ 1,654 $ 1,782 Other - - - Total $ 1,527 $ 1,654 $ 1,782 Fair value of plan assets - - - Accumulated post-retirement benefit obligation in excess of plan assets $ 1,527 $ 1,654 $ 1,782 Additional Information Assumptions At December 31, 2021 2020 2019 Weighted-average assumptions used to determine benefit obligations Discount rate 2.46 % 1.80 % 2.90 % Weighted-average assumptions used to determine net periodic benefit cost Discount rate 1.80 % 2.90 % 3.76 % The above discount rate is based on the expected return of a portfolio of Corporate Aa debt, the term of which approximates the term of the benefit obligations. The Company reserves the right to terminate or alter post-employment health benefits. Post-retirement medical benefits are currently fixed amounts without provision for future increases; as a result, the assumed annual average rate of inflation used to measure the expected cost of benefits covered by this program is zero 2022 Estimated future benefit payments (In thousands) 2022 $ 143 2023 143 2024 142 2025 142 2026 135 Years 2027-2031 534

Note 14 - Related Party Transac

Note 14 - Related Party Transactions	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Related Party Transactions Disclosure [Text Block]	Note 14: Certain of the Directors, executive officers and their associates have had banking transactions with subsidiaries of the Company in the ordinary course of business. The table below reflects information concerning loans to certain directors and executive officers and/or family members during 2021 2020: 2021 2020 ($ in thousands) Balance at January 1, $ 499 $ 533 Originations - - Principal reductions (45 ) (34 ) Balance at December 31, $ 454 $ 499 Percent of total loans outstanding. 0.04 % 0.04 %

Note 15 - Regulatory Matters

Note 15 - Regulatory Matters	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Regulatory Matters [Text Block]	Note 15: Payment of dividends to the Company by the Bank is limited under regulations for state chartered banks. The amount that can be paid in any calendar year, without prior approval from regulatory agencies, cannot exceed the net profits (as defined) for the preceding three 1972.

Note 16 - Other Comprehensive I

Note 16 - Other Comprehensive Income (Loss)	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Comprehensive Income (Loss) Note [Text Block]	Note 16: The components of other comprehensive income (loss) and other related tax effects were: 2021 Before tax Tax effect Net of tax (In thousands) Debt securities available for sale: Changes in net unrealized gains arising during the year $ (91,891 ) $ 27,167 $ (64,724 ) Reclassification of gains included in net income (34 ) 10 (24 ) Other comprehensive income $ (91,925 ) $ 27,177 $ (64,748 ) 2020 Before tax Tax effect Net of tax (In thousands) Debt securities available for sale: Changes in net unrealized gains arising during the year $ 125,519 $ (37,108 ) $ 88,411 Reclassification of gains included in net income (71 ) 21 (50 ) Other comprehensive income $ 125,448 $ (37,087 ) $ 88,361 2019 Before tax Tax effect Net of tax (In thousands) Debt securities available for sale: Changes in net unrealized gains arising during the year $ 93,936 $ (27,771 ) $ 66,165 Reclassification of gains included in net income (167 ) 49 (118 ) Other comprehensive income $ 93,769 $ (27,722 ) $ 66,047 Accumulated other comprehensive income (loss) balances were: Accumulated Other Comprehensive (Loss) Income (In thousands) Balance, December 31, 2018 $ (39,996 ) Changes in unrealized (losses) gains on debt securities available for sale, net of tax 66,047 Balance, December 31, 2019 26,051 Changes in unrealized gains on debt securities available for sale, net of tax 88,361 Balance, December 31, 2020 114,412 Changes in unrealized gains on debt securities available for sale, net of tax (64,748 ) Balance, December 31, 2021 $ 49,664

Note 17 - Earnings Per Common S

Note 17 - Earnings Per Common Share	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Earnings Per Share [Text Block]	17: The table below shows earnings per common share and diluted earnings per common share. Basic earnings per common share are computed by dividing net income by the average number of common shares outstanding during the period. Diluted earnings per common share are computed by dividing net income by the average number of common shares outstanding during the period plus the impact of common stock equivalents. For the Years Ended December 31, 2021 2020 2019 (In thousands, except per share data) Net income (numerator) $ 86,509 $ 80,413 $ 80,389 Basic earnings per common share Weighted average number of common shares outstanding - basic (denominator) 26,855 26,942 26,956 Basic earnings per common share $ 3.22 $ 2.98 $ 2.98 Diluted earnings per common share Weighted average number of common shares outstanding - basic 26,855 26,942 26,956 Add common stock equivalents for options 15 18 50 Weighted average number of common shares outstanding - diluted (denominator) 26,870 26,960 27,006 Diluted earnings per common share $ 3.22 $ 2.98 $ 2.98 For the years ended December 31, 2021, 2020 2019, not

Note 18 - Westamerica Bancorpor

Note 18 - Westamerica Bancorporation (Parent Company Only Condensed Financial Information)	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Condensed Financial Information of Parent Company Only Disclosure [Text Block]	Note 18: Statements of Income and Comprehensive Income For the Years Ended December 31, 2021 2020 2019 (In thousands) Dividends from subsidiaries $ 29,279 $ 10,783 $ 80,067 Interest income 44 56 54 Other income 11,608 11,438 8,778 Total income 40,931 22,277 88,899 Salaries and benefits 6,612 7,107 6,978 Other expense 2,279 2,206 3,729 Total expense 8,891 9,313 10,707 Income before taxes and equity in undistributed income of subsidiaries 32,040 12,964 78,192 Income tax (expense) benefit (645 ) (454 ) 636 Earnings of subsidiaries greater than subsidiary dividends 55,114 67,903 1,561 Net income 86,509 80,413 80,389 Other comprehensive (loss) income, net of tax (64,748 ) 88,361 66,047 Comprehensive income $ 21,761 $ 168,774 $ 146,436 Balance Sheets At December 31, 2021 2020 (In thousands) Assets Cash $ 69,943 $ 78,364 Investment in Westamerica Bank 720,614 730,248 Investment in non-bank subsidiaries 454 455 Premises and equipment, net 9,968 10,459 Accounts receivable from Westamerica Bank 224 257 Other assets 42,026 40,852 Total assets $ 843,229 $ 860,635 Liabilities Accounts payable to Westamerica Bank $ 62 $ 29 Other liabilities 16,065 15,797 Total liabilities 16,127 15,826 Shareholders' equity 827,102 844,809 Total liabilities and shareholders' equity $ 843,229 $ 860,635 Statements of Cash Flows For the Years Ended December 31, 2021 2020 2019 (In thousands) Operating Activities Net income $ 86,509 $ 80,413 $ 80,389 Adjustments to reconcile net income to net cash provided by operating activities: Depreciation and amortization 569 608 449 Decrease (increase) in accounts receivable from affiliates 117 (150 ) 80 Increase in other assets (1,223 ) (2,421 ) (71 ) Stock option compensation expense 1,419 1,875 1,744 Provision (benefit) for deferred income tax 645 428 (315 ) Increase in other liabilities 254 855 856 Earnings of subsidiaries greater than subsidiary dividends (55,114 ) (67,903 ) (1,561 ) Gain on disposal of premises and equipment - (61 ) (1,055 ) Net Cash Provided by Operating Activities 33,176 13,644 80,516 Investing Activities Purchases of equipment (78 ) - - Net Cash Used by Investing Activities (78 ) - - Financing Activities Exercise of stock options 3,017 2,838 13,699 Retirement of common stock (232 ) (16,496 ) (488 ) Common stock dividends paid (44,304 ) (44,285 ) (43,942 ) Net Cash Used in Financing Activities (41,519 ) (57,943 ) (30,731 ) Net change in cash and due from banks (8,421 ) (44,299 ) 49,785 Cash and due from banks at beginning of period 78,364 122,663 72,878 Cash and due from banks at end of period $ 69,943 $ 78,364 $ 122,663 Supplemental Cash Flow Disclosures: Supplemental disclosure of cash flow activities: Interest paid for the period $ - $ - $ - Income tax payments for the period 27,673 26,462 24,491

Note 19 - Quarterly Financial I

Note 19 - Quarterly Financial Information (Unaudited)	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Quarterly Financial Information [Text Block]	Note 19: For the Three Months Ended March 31, June 30, September 30, December 31, (In thousands, except per share data and price range of common stock) 2021 Interest and loan fee income $ 42,316 $ 44,276 $ 43,810 $ 43,041 Net interest income 41,841 43,792 43,318 42,537 Provision for loan losses - - - - Noninterest income 10,189 11,032 11,282 10,842 Noninterest expense 24,906 24,291 24,697 23,912 Income before taxes 27,124 30,533 29,903 29,467 Net income 20,147 22,579 22,063 21,720 Basic earnings per common share 0.75 0.84 0.82 0.81 Diluted earnings per common share 0.75 0.84 0.82 0.81 Dividends paid per common share 0.41 0.41 0.41 0.42 Price range, common stock 55.82 - 66.43 57.67 - 64.80 54.03 - 58.55 53.78 - 58.00 2020 Interest and loan fee income $ 39,991 $ 41,539 $ 41,365 $ 42,961 Net interest income 39,549 41,104 40,899 42,480 Provision for loan losses 4,300 - - - Noninterest income 11,648 9,554 10,476 13,959 Noninterest expense 24,664 24,754 24,603 24,545 Income before taxes 22,233 25,904 26,772 31,894 Net income 16,962 19,562 20,051 23,838 Basic earnings per common share 0.63 0.72 0.74 0.89 Diluted earnings per common share 0.63 0.72 0.74 0.89 Dividends paid per common share 0.41 0.41 0.41 0.41 Price range, common stock 47.37 - 68.01 53.40 - 64.86 51.84 - 63.58 51.49 - 59.70 2019 Interest and loan fee income $ 39,483 $ 39,626 $ 39,695 $ 39,878 Net interest income 38,989 39,139 39,240 39,427 Provision for loan losses - - - - Noninterest income 11,579 12,288 11,809 11,732 Noninterest expense 25,183 25,561 24,033 24,209 Income before taxes 25,385 25,866 27,016 26,950 Net income 19,646 19,625 20,390 20,728 Basic earnings per common share 0.73 0.73 0.76 0.77 Diluted earnings per common share 0.73 0.73 0.75 0.77 Dividends paid per common share 0.40 0.41 0.41 0.41 Price range, common stock 56.82 - 64.48 59.51 - 64.82 59.26 - 64.56 60.65 - 68.58

Significant Accounting Policies

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Impact of COVID-19 Pandemic, Policy [Policy Text Block]	Impact of COVID- 19 The COVID- 19 first 2020 fourth 2021 may The Bank's deposits are exclusively sourced within California and its loans are primarily to borrowers domiciled within California. Demand for the Bank's products and services, such as loans and deposits, could be affected as a result of the decline in economic activity within the state. The Bank's investment portfolio contains bonds for which the source of repayment is domestic mortgage repayments, domestic municipalities throughout the United States, and domestic and global corporations. The value of the Bank's investment portfolio may In response to the pandemic, the Federal Reserve has engaged significant levels of monetary policy to provide liquidity and credit facilities to the financial markets. On March 15, 2020, 0 0.25 0.10 March 16, 2020, may June 17, 2021, 0.15%. In response to the pandemic, the United States federal government enacted the Coronavirus Aid, Relief, and Economic Security Act (the "CARES Act") on March 27, 2020, $2 $350 2020 first six 2021, December 31, 2021. On April 7, 2020, 19 December 31, 2021, On December 27, 2020, 2020 $900 $284 second The extent of the spread of the coronavirus, its ultimate containment and its continuing effects on the economy and the Company are uncertain at this time. The effectiveness of the Federal Reserve Board's monetary policies and the federal government's fiscal policies in stimulating the United States economy is uncertain at this time. The Company's net interest margin and non-interest income could decline and credit-related losses could increase for an uncertain period given the decline in economic activity occurring due to the coronavirus. The amount of impact on the Company's financial results is uncertain. In addition, the Company's future success and profitability substantially depends upon the skills and experience of its executive officers and directors, many of whom have held positions with the Company for many years. The unanticipated loss or unavailability of key employees due to the outbreak could adversely affect the Company's ability to operate its business or execute its business strategy. There are no 19 may one
Use of Estimates, Policy [Policy Text Block]	Accounting Estimates. Certain accounting policies underlying the preparation of these financial statements require Management to make estimates, assumptions, and judgments that affect the amounts reported in the financial statements and accompanying notes. These estimates, assumptions, and judgments are based on information available as of the date of the financial statements; accordingly, as this information changes, the financial statements could reflect different estimates, assumptions, and judgments and as such have a greater possibility of producing results that could be materially different than originally reported. Estimates, assumptions, and judgments are necessary when assets and liabilities are required to be recorded at fair value, when a decline in fair value of an asset not third may
Consolidation, Policy [Policy Text Block]	Principles of Consolidation. The consolidated financial statements include the accounts of the Company and all the Company’s subsidiaries. Significant intercompany transactions have been eliminated in consolidation. The Company does not
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash. Cash includes Due From Banks balances which are readily convertible to known amounts of cash and are generally 90
Marketable Securities, Policy [Policy Text Block]	Equity Securities. Equity securities consist of marketable equity securities and mutual funds which are recorded at fair value. Unrealized gains and losses are included in net income. There were no equity securities at December 31, 2021 December 31, 2020. Debt Securities. Debt securities consist of the U.S. Treasury, securities of government sponsored entities, states, counties, municipalities, corporations, agency and non-agency mortgage-backed securities, collateralized loan obligations and commercial paper. Securities transactions are recorded on a trade date basis. The Company classifies its debt securities in one three not not The Company utilizes third 1 2 third one third third not 3 The Company follows the guidance issued by the Board of Governors of the Federal Reserve System, “Investing in Securities without Reliance on Nationally Recognized Statistical Rating Agencies” (SR 12 15 To the extent that debt securities in the held-to-maturity portfolio share common risk characteristics, estimated expected credit losses are calculated in a manner like that used for loans held for investment. That is, for pools of such securities with common risk characteristics, the historical lifetime probability of default and severity of loss in the event of default is derived or obtained from external sources and adjusted for the expected effects of reasonable and supportable forecasts over the expected lives of the securities on those historical credit losses. Expected credit loss on each security in the held-to-maturity portfolio that do not may not Available for sale debt securities in unrealized loss positions are evaluated for credit related loss at least quarterly. For available for sale debt securities, a decline in fair value due to credit loss results in recording an allowance for credit losses to the extent the fair value is less than the amortized cost basis. Declines in fair value that have not not not not If the Company intends to sell a debt security or more likely than not Purchase premiums are amortized to the earliest call date and purchase discounts are amortized to maturity as an adjustment to yield using the effective interest method. Unamortized premiums, unaccreted discounts, and early payment premiums are recognized as a component of gain or loss on sale upon disposition of the related security. Interest and dividend income are recognized when earned. Realized gains and losses from the sale of available for sale debt securities are included in earnings using the specific identification method.
Equity Securities without Readily Determinable Fair Value [Policy Text Block]	Nonmarketable Equity Securities. Nonmarketable equity securities include securities that are not
Financing Receivable [Policy Text Block]	Loans. Loans are stated at the principal amount outstanding, net of unearned discount and unamortized deferred fees and costs. Interest is accrued daily on the outstanding principal balances and included in other assets. Loans which are more than 90 days delinquent with respect to interest or principal, unless they are well secured and in the process of collection, and other loans on which full recovery of principal or interest is in doubt, are placed on nonaccrual status. Interest previously accrued on loans placed on nonaccrual status is charged against interest income. In addition, some loans secured by real estate and commercial loans to borrowers experiencing financial difficulties are placed on nonaccrual status even though the borrowers continue to repay the loans as scheduled. When the ability to fully collect nonaccrual loan principal is in doubt, payments received are applied against the principal balance of the loans on a cost-recovery method until such time as full collection of the remaining recorded balance is expected. Any additional interest payments received after that time are recorded as interest income on a cash basis. Nonaccrual loans are reinstated to accrual status when none A troubled debt restructuring (“TDR”) occurs when the Company, for reasons related to a borrower’s financial difficulties, grants a concession to the borrower it would not may not 1 2 not 30 December 31, 2019; 3 March 1, 2020, 60 December 31, 2020.The 2021, may not January 1, 2022.
Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block]	Allowance for Credit Losses. The Company extends loans to commercial and consumer customers primarily in Northern and Central California. These lending activities expose the Company to the risk borrowers will default, causing loan losses. The Company’s lending activities are exposed to various qualitative risks. All loan segments are exposed to risks inherent in the economy and market conditions. Significant risk characteristics related to the commercial loan segment include the borrowers’ business performance and financial condition, and the value of collateral for secured loans. Significant risk characteristics related to the commercial real estate segment include the borrowers’ business performance and the value of properties collateralizing the loans. Significant risk characteristics related to the construction loan segment include the borrowers’ performance in successfully developing the real estate into the intended purpose and the value of the property collateralizing the loans. Significant risk characteristics related to the residential real estate segment include the borrowers’ financial wherewithal to service the mortgages and the value of the property collateralizing the loans. Significant risk characteristics related to the consumer loan segment include the financial condition of the borrowers and the value of collateral securing the loans. The preparation of these financial statements requires Management to estimate the amount of expected losses over the expected contractual life of the Bank’s existing loan portfolio and establish an allowance for credit losses. Loan agreements generally include a maturity date, and the Company considers the contractual life of a loan agreement to extend from the date of origination to the contractual maturity date. In estimating credit losses, Management must exercise significant judgment in evaluating information deemed relevant. The amount of ultimate losses on the loan portfolio can vary from the estimated amounts. Management follows a systematic methodology to estimate loss potential in an effort to reduce the differences between estimated and actual losses. The allowance for credit losses is established through provisions for credit losses charged to income. Losses on loans are charged to the allowance for credit losses when all or a portion of the recorded amount of a loan is deemed to be uncollectible. Recoveries of loans previously charged off are credited to the allowance when realized. The Company’s allowance for credit losses is maintained at a level considered adequate to provide for expected losses based on historical loss rates adjusted for current and expected conditions over a forecast period. These include conditions unique to individual borrowers, as well as overall credit loss experience, the amount of past due, nonperforming and classified loans, recommendations of regulatory authorities, prevailing economic conditions, or credit protection agreements and other factors. Loans that share common risk characteristics are segregated into pools based on common characteristics, which is primarily determined by loan, borrower, or collateral type. Historical loss rates are determined for each pool. For consumer installment loans, primarily secured by automobiles, historical loss rates are determined using a vintage methodology, which tracks losses based on period of origination. For commercial, construction, and commercial real estate, historical loss rates are determined using an open pool methodology where losses are tracked over time for all loans included in the pool at the historical measurement date. Historical loss rates are adjusted for factors that are not not two not not two Loans that do not not Accrued interest is recorded in other assets and is excluded from the estimation of expected credit loss. Accrued interest is reversed through interest income when amounts are determined to be uncollectible, which generally occurs when the underlying receivable is placed on nonaccrual status or charged off.
Off-Balance-Sheet Credit Exposure, Policy [Policy Text Block]	Liability for Off-Balance Sheet Credit Exposures. Off-balance sheet credit exposures relate to letters of credit and unfunded loan commitments for commercial, construction and consumer loans. The Company maintains a separate allowance for credit losses from off-balance-sheet credit exposures, which is included within other liabilities on the consolidated statements of financial condition. Increases or reductions to the Company’s allowance for credit losses from off-balance sheet credit exposures are recorded in other expenses. Management estimates the amount of expected losses by estimating expected usage exposures that are not No may Nonrefundable fees and certain costs associated with originating or acquiring loans are deferred and amortized as an adjustment to interest income over the contractual loan lives. Upon prepayment, unamortized loan fees, net of costs, are immediately recognized in interest income. Other fees, including those collected upon principal prepayments, are included in interest income when received. Loans held for sale are identified upon origination and are reported at the lower of cost or market value on an aggregate loan basis.
Financing Receivable, Real Estate Acquired Through Foreclosure [Policy Text Block]	Other Real Estate Owned. Other real estate owned is comprised of property acquired through foreclosure proceedings, acceptances of deeds-in-lieu of foreclosure and, if applicable, vacated bank properties. Losses recognized at the time of acquiring property in full or partial satisfaction of debt are charged against the allowance for credit losses. Other real estate owned is recorded at the fair value of the collateral, generally based upon an independent property appraisal, less estimated disposition costs. Losses incurred subsequent to acquisition due to any decline in annual independent property appraisals are recognized as noninterest expense. Routine holding costs, such as property taxes, insurance and maintenance, and losses from sales and dispositions, are recognized as noninterest expense.
Property, Plant and Equipment, Policy [Policy Text Block]	Premises and Equipment. Premises and equipment are stated at cost, less accumulated depreciation and amortization. Depreciation is computed substantially on the straight-line method over the estimated useful life of each type of asset. Estimated useful lives of premises and equipment range from 20 to 50 years and from 3 to 20 years, respectively. Leasehold improvements are amortized over the terms of the lease or their estimated useful life, whichever is shorter.
Revenue from Contract with Customer [Policy Text Block]	Revenue Recognition. The Company recognizes revenue as it is earned based on contractual terms, as transactions occur, or as services are provided and collectability is reasonably assured. In certain circumstances, noninterest income is reported net of associated expenses that are directly related to variable volume-based sales or revenue sharing arrangements or when the Company acts on an agency basis for others.
Life Insurance Cash Surrender Value [Policy Text Block]	Life Insurance Cash Surrender Value. The Company has purchased life insurance policies on certain directors and officers as well as acquired such assets as part of the acquisition of other banks. Company owned life insurance is recorded at the amount that can be realized under the insurance contract at the balance sheet date, which is the cash surrender value adjusted for other charges or other amounts due that are probable at settlement. These assets are included in other assets on the consolidated balance sheets.
Goodwill and Intangible Assets, Policy [Policy Text Block]	Intangible Assets. Intangible assets are comprised of goodwill, core deposit intangibles and other identifiable intangibles acquired in business combinations. Intangible assets with finite useful lives are amortized on an accelerated basis over their respective estimated useful lives not not not not
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]	Impairment of Long-Lived Assets. The Company reviews its long-lived and certain intangible assets for impairment whenever events or changes indicate that the carrying amount of an asset may not
Income Tax, Policy [Policy Text Block]	Income Taxes. The Company and its subsidiaries file consolidated tax returns. The Company accounts for income taxes in accordance with FASB ASC 740, two not. not fifty
Share-based Payment Arrangement [Policy Text Block]	Stock-based Compensation. The Company applies FASB ASC 718 no
Fiduciary [Policy Text Block]	Other. Securities and other property held by the Bank in a fiduciary or agency capacity are not not
Currently Adopted Accounting Pronouncements [Policy Text Block]	Recently Adopted Accounting Standards In the year ended December 31, 2021, FASB ASU 2019 12 Income Taxes (Topic 740 December 2019. 740 December 15, 2020, January 1, 2021 not In 2020, FASB ASU 2016 13, Financial Instruments Credit Losses (Topic 326 June 16, 2016. The Company adopted the ASU provisions on a modified retrospective basis on January 1, 2020. no The following table summarizes the impact of adoption of ASU 2016 13. January 1, 2020 Balance, Impact of As reported prior to adoption adoption of under of ASU 2016-13 ASU 2016-13 ASU 2016-13 (In thousands) Assets: Allowance for credit losses on loans: Commercial $ 4,959 $ 3,385 $ 8,344 Commercial real estate 4,064 618 4,682 Construction 109 (31 ) 78 Residential real estate 206 (132 ) 74 Consumer and other installment loans 6,445 1,878 8,323 Unallocated 3,701 (3,701 ) - Allowance for credit losses on loans: $ 19,484 $ 2,017 $ 21,501 Allowance for credit losses on debt securities held to maturity - 16 16 Liabilities: Allowance for credit losses for unfunded commitments 2,160 (2,107 ) 53
New Accounting Pronouncements, Policy [Policy Text Block]	Recently Issued Accounting Standards FASB ASU 2020 04 Reference Rate Reform (Topic 848 March 2020. no not 2020 04 2020 04 March 12, 2020 December 31, 2022. may 2020 04 January 1, 2020, March 12, 2020, not

Note 1 - Business and Account_2

Note 1 - Business and Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Accounting Standards Update and Change in Accounting Principle [Table Text Block]	January 1, 2020 Balance, Impact of As reported prior to adoption adoption of under of ASU 2016-13 ASU 2016-13 ASU 2016-13 (In thousands) Assets: Allowance for credit losses on loans: Commercial $ 4,959 $ 3,385 $ 8,344 Commercial real estate 4,064 618 4,682 Construction 109 (31 ) 78 Residential real estate 206 (132 ) 74 Consumer and other installment loans 6,445 1,878 8,323 Unallocated 3,701 (3,701 ) - Allowance for credit losses on loans: $ 19,484 $ 2,017 $ 21,501 Allowance for credit losses on debt securities held to maturity - 16 16 Liabilities: Allowance for credit losses for unfunded commitments 2,160 (2,107 ) 53

Note 2 - Investment Securities

Note 2 - Investment Securities (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Debt Securities, Available-for-sale and Held-to-maturity [Table Text Block]	At December 31, 2021 Gross Gross Amortized Unrealized Unrealized Fair Cost Gains Losses Value (In thousands) Debt securities available for sale Agency residential mortgage-backed securities ("MBS") $ 399,997 $ 11,766 $ (37 ) $ 411,726 Securities of U.S. Government entities 119 - - 119 Obligations of states and political subdivisions 90,107 3,842 (29 ) 93,920 Corporate securities 2,692,792 63,573 (9,630 ) 2,746,735 Collateralized loan obligations 1,385,331 1,743 (719 ) 1,386,355 Total debt securities available for sale 4,568,346 80,924 (10,415 ) 4,638,855 Debt securities held to maturity Agency residential MBS 147,632 3,112 (18 ) 150,726 Non-agency residential MBS 758 2 (19 ) 741 Obligations of states and political subdivisions 158,013 3,082 - 161,095 Total debt securities held to maturity 306,403 6,196 (37 ) 312,562 Total $ 4,874,749 $ 87,120 $ (10,452 ) $ 4,951,417 At December 31, 2020 Gross Gross Amortized Unrealized Unrealized Fair Cost Gains Losses Value (In thousands) Debt securities available for sale Agency residential MBS $ 630,174 $ 22,779 $ (1 ) $ 652,952 Securities of U.S. Government entities 154 - - 154 Obligations of states and political subdivisions 105,679 5,332 (1 ) 111,010 Corporate securities 1,986,995 131,025 (42 ) 2,117,978 Commercial paper 24,983 7 - 24,990 Collateralized loan obligations 1,152,766 4,433 (1,098 ) 1,156,101 Total debt securities available for sale 3,900,751 163,576 (1,142 ) 4,063,185 Debt securities held to maturity Agency residential MBS 240,332 6,852 (32 ) 247,152 Non-agency residential MBS 1,344 26 - 1,370 Obligations of states and political subdivisions 273,922 7,243 - 281,165 Total debt securities held to maturity 515,598 14,121 (32 ) 529,687 Total $ 4,416,349 $ 177,697 $ (1,174 ) $ 4,592,872
Investments Classified by Contractual Maturity Date [Table Text Block]	At December 31, 2021 Debt Securities Available Debt Securities Held for Sale to Maturity Amortized Fair Amortized Fair Cost Value Cost Value (In thousands) Maturity in years: 1 year or less $ 306,333 $ 309,257 $ 15,836 $ 15,941 Over 1 to 5 years 707,062 738,057 125,001 127,539 Over 5 to 10 years 2,320,559 2,347,242 17,176 17,615 Over 10 years 834,395 832,573 - - Subtotal 4,168,349 4,227,129 158,013 161,095 MBS 399,997 411,726 148,390 151,467 Total $ 4,568,346 $ 4,638,855 $ 306,403 $ 312,562 At December 31, 2020 Debt Securities Available Debt Securities Held for Sale to Maturity Amortized Fair Amortized Fair Cost Value Cost Value (In thousands) Maturity in years: 1 year or less $ 212,140 $ 213,715 $ 54,526 $ 54,927 Over 1 to 5 years 922,170 974,438 129,786 133,195 Over 5 to 10 years 1,767,747 1,851,184 89,610 93,043 Over 10 years 368,520 370,896 - - Subtotal 3,270,577 3,410,233 273,922 281,165 MBS 630,174 652,952 241,676 248,522 Total $ 3,900,751 $ 4,063,185 $ 515,598 $ 529,687
Schedule of Unrealized Loss on Investments [Table Text Block]	Debt Securities Available for Sale At December 31, 2021 No. of Less than 12 months No. of 12 months or longer No. of Total Investment Unrealized Investment Unrealized Investment Unrealized Positions Fair Value Losses Positions Fair Value Losses Positions Fair Value Losses ($ in thousands) Agency residential MBS 7 $ 8,900 $ (37 ) 2 $ 47 $ - 9 $ 8,947 $ (37 ) Securities of U.S. - - - 1 119 - 1 119 - Obligations of states 6 2,859 (27 ) 2 669 (2 ) 8 3,528 (29 ) Corporate securities 56 691,555 (9,630 ) - - - 56 691,555 (9,630 ) Collateralized loan 19 208,199 (521 ) 8 51,523 (198 ) 27 259,722 (719 ) Total 88 $ 911,513 $ (10,215 ) 13 $ 52,358 $ (200 ) 101 $ 963,871 $ (10,415 ) Debt Securities Held to Maturity At December 31, 2021 No. of Less than 12 months No. of 12 months or longer No. of Total Investment Unrecognized Investment Unrecognized Investment Unrecognized Positions Fair Value Losses Positions Fair Value Losses Positions Fair Value Losses ($ in thousands) Agency residential MBS - $ - $ - 3 $ 530 $ (18 ) 3 $ 530 $ (18 ) Non-agency residential 1 542 (19 ) - - - 1 542 (19 ) Total 1 $ 542 $ (19 ) 3 $ 530 $ (18 ) 4 $ 1,072 $ (37 ) Debt Securities Available for Sale At December 31, 2020 No. of Less than 12 months No. of 12 months or longer No. of Total Investment Unrealized Investment Unrealized Investment Unrealized Positions Fair Value Losses Positions Fair Value Losses Positions Fair Value Losses ($ in thousands) Agency residential MBS 1 $ 96 $ (1 ) 1 $ 17 $ - 2 $ 113 $ (1 ) Securities of U.S. 1 154 - - - - 1 154 - Obligations of states 2 692 (1 ) - - - 2 692 (1 ) Corporate securities - - - 1 14,963 (42 ) 1 14,963 (42 ) Collateralized loan 36 268,584 (1,098 ) - - - 36 268,584 (1,098 ) Total 40 $ 269,526 $ (1,100 ) 2 $ 14,980 $ (42 ) 42 $ 284,506 $ (1,142 ) Debt Securities Held to Maturity At December 31, 2020 No. of Less than 12 months No. of 12 months or longer No. of Total Investment Unrecognized Investment Unrecognized Investment Unrecognized Positions Fair Value Losses Positions Fair Value Losses Positions Fair Value Losses ($ in thousands) Agency residential MBS 3 $ 377 $ (1 ) 3 $ 788 $ (31 ) 6 $ 1,165 $ (32 )
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Table Text Block]	For the Year Ended December 31, 2021 2020 (In thousands) Allowance for credit losses: Balance, end of prior period $ 9 $ - Impact of adopting ASU 2016-13 - 16 Beginning balance 9 16 Reversal of provision (2 ) (7 ) Chargeoffs - - Recoveries - - Total ending balance $ 7 $ 9
Debt Securities, Held-to-maturity, Credit Quality Indicator [Table Text Block]	Credit Risk Profile by Credit Rating At December 31, 2021 AAA/AA/A B- Not Rated Total (In thousands) Agency residential MBS $ 177 $ - $ 147,455 $ 147,632 Non-agency residential MBS 149 561 48 758 Obligations of states and political subdivisions 155,268 - 2,745 158,013 Total $ 155,594 $ 561 $ 150,248 $ 306,403
Interest Income from Investments [Table Text Block]	For the Years Ended December 31, 2021 2020 2019 (In thousands) Taxable $ 106,329 $ 93,163 $ 77,800 Tax-exempt from regular federal income tax 8,424 12,151 15,736 Total interest income from investment securities $ 114,753 $ 105,314 $ 93,536

Note 3 - Loans and Allowance _2

Note 3 - Loans and Allowance for Credit Losses (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Loans Receivable [Table Text Block]	At December 31, 2021 2020 (In thousands) Commercial: Paycheck Protection Program ("PPP") loans $ 45,888 $ 186,945 Other 187,202 207,861 Total Commercial 233,090 394,806 Commercial Real Estate 535,261 564,300 Construction 48 129 Residential Real Estate 18,133 23,471 Consumer Installment & Other 281,594 273,537 Total $ 1,068,126 $ 1,256,243
Financing Receivable, Current, Allowance for Credit Loss [Table Text Block]	Allowance for Credit Losses For the Year Ended December 31, 2021 Consumer Commercial Residential Installment Commercial Real Estate Construction Real Estate and Other Total (In thousands) Allowance for credit losses: Balance at beginning of period $ 9,205 $ 5,660 $ 6 $ 47 $ 8,936 $ 23,854 (Reversal) provision (2,411 ) 126 (4 ) (2 ) 2,293 2 Chargeoffs (56 ) - - - (3,192 ) (3,248 ) Recoveries 228 743 - - 1,935 2,906 Total allowance for credit losses $ 6,966 $ 6,529 $ 2 $ 45 $ 9,972 $ 23,514 Allowance for Credit Losses For the Year Ended December 31, 2020 Consumer Commercial Residential Installment Commercial Real Estate Construction Real Estate and Other Unallocated Total (In thousands) Allowance for credit losses: Balance at beginning of period, prior to adoption of ASU 2016-13 $ 4,959 $ 4,064 $ 109 $ 206 $ 6,445 $ 3,701 $ 19,484 Impact of adopting ASU 2016-13 3,385 618 (31 ) (132 ) 1,878 (3,701 ) 2,017 Adjusted beginning balance 8,344 4,682 78 74 8,323 - 21,501 Provision (reversal) 746 929 (72 ) (27 ) 2,731 - 4,307 Chargeoffs (236 ) - - - (3,963 ) - (4,199 ) Recoveries 351 49 - - 1,845 - 2,245 Total allowance for credit losses $ 9,205 $ 5,660 $ 6 $ 47 $ 8,936 $ - $ 23,854 Allowance for Loan Losses For the Twelve Months Ended December 31, 2019 Consumer Commercial Residential Installment Commercial Real Estate Construction Real Estate and Other Unallocated Total (In thousands) Allowance for loan losses: Balance at beginning of period $ 6,311 $ 3,884 $ 1,465 $ 869 $ 5,645 $ 3,177 $ 21,351 (Reversal) provision (2,023 ) (16 ) (1,356 ) (663 ) 3,534 524 - Chargeoffs (97 ) - - - (4,473 ) - (4,570 ) Recoveries 768 196 - - 1,739 - 2,703 Total allowance for loan losses $ 4,959 $ 4,064 $ 109 $ 206 $ 6,445 $ 3,701 $ 19,484
Financing Receivable Credit Quality Indicators [Table Text Block]	Credit Risk Profile by Internally Assigned Grade At December 31, 2021 Commercial Commercial Real Estate Construction Residential Real Estate Consumer Installment and Other Total (In thousands) Grade: Pass $ 232,710 $ 521,300 $ 48 $ 16,874 $ 278,922 $ 1,049,854 Substandard 380 13,961 - 1,259 1,207 16,807 Doubtful - - - - 931 931 Loss - - - - 534 534 Total $ 233,090 $ 535,261 $ 48 $ 18,133 $ 281,594 $ 1,068,126 Credit Risk Profile by Internally Assigned Grade At December 31, 2020 Commercial Commercial Real Estate Construction Residential Real Estate Consumer Installment and Other Total (In thousands) Grade: Pass $ 386,144 $ 545,398 $ 129 $ 22,105 $ 270,925 $ 1,224,701 Substandard 8,662 18,902 - 1,366 1,498 30,428 Doubtful - - - - 543 543 Loss - - - - 571 571 Total $ 394,806 $ 564,300 $ 129 $ 23,471 $ 273,537 $ 1,256,243
Financing Receivable, Past Due [Table Text Block]	Summary of Loans by Delinquency and Nonaccrual Status At December 31, 2021 Current and Accruing 30-59 Days Past Due and Accruing 60-89 Days Past Due and Accruing Past Due 90 Days or More and Accruing Nonaccrual Total Loans (In thousands) Commercial $ 232,444 $ 383 $ 263 $ - $ - $ 233,090 Commercial real estate 534,748 223 - - 290 535,261 Construction 48 - - - - 48 Residential real estate 17,855 141 - - 137 18,133 Consumer installment and other 276,793 3,184 1,013 339 265 281,594 Total $ 1,061,888 $ 3,931 $ 1,276 $ 339 $ 692 $ 1,068,126 Summary of Loans by Delinquency and Nonaccrual Status At December 31, 2020 Current and Accruing 30-59 Days Past Due and Accruing 60-89 Days Past Due and Accruing Past Due 90 Days or More and Accruing Nonaccrual Total Loans (In thousands) Commercial $ 394,004 $ 713 $ 6 $ - $ 83 $ 394,806 Commercial real estate 560,580 - - - 3,720 564,300 Construction 129 - - - - 129 Residential real estate 22,269 770 271 - 161 23,471 Consumer installment and other 270,240 2,010 472 450 365 273,537 Total $ 1,247,222 $ 3,493 $ 749 $ 450 $ 4,329 $ 1,256,243
Impaired Financing Receivables Supplemental Schedule [Table Text Block]	Impaired Loans For the Year Ended December 31, 2019 Average Recognized Recorded Interest Investment Income (In thousands) Commercial $ 8,412 $ 140 Commercial real estate 7,428 139 Residential real estate 191 3 Consumer installment and other 44 1 Total $ 16,075 $ 283
Financing Receivable, Troubled Debt Restructuring [Table Text Block]	Troubled Debt Restructurings At December 31, 2021 Period-End Individual Number of Pre-Modification Period-End Credit Loss Contracts Carrying Value Carrying Value Allowance ($ in thousands) Commercial real estate 2 $ 2,785 $ 1,793 $ - Residential real estate 1 241 172 - Total 3 $ 3,026 $ 1,965 $ - Troubled Debt Restructurings At December 31, 2020 Period-End Individual Number of Pre-Modification Period-End Credit Loss Contracts Carrying Value Carrying Value Allowance ($ in thousands) Commercial real estate 6 $ 8,367 $ 6,040 $ - Residential real estate 1 241 181 - Total 7 $ 8,608 $ 6,221 $ -
Financing Receivable, Loans by Risk Category [Table Text Block]	At December 31, 2021 Revolving Loans Term Loans Amortized Cost Basis by Origination Year Total Amortized Prior 2017 2018 2019 2020 2021 Term Loans Cost Basis Total (In thousands) Commercial loans by grade Pass $ 34,784 $ 3,999 $ 8,690 $ 16,919 $ 30,694 $ 98,799 $ 193,885 $ 38,825 $ 232,710 Substandard 32 - - - - 57 89 291 380 Doubtful - - - - - - - - - Loss - - - - - - - - - Total $ 34,816 $ 3,999 $ 8,690 $ 16,919 $ 30,694 $ 98,856 $ 193,974 $ 39,116 $ 233,090 At December 31, 2021 Revolving Loans Term Loans Amortized Cost Basis by Origination Year Total Amortized Prior 2017 2018 2019 2020 2021 Term Loans Cost Basis Total (In thousands) Commercial real estate loans by grade Pass $ 116,181 $ 87,921 $ 78,200 $ 78,647 $ 83,642 $ 76,709 $ 521,300 $ - $ 521,300 Substandard 10,993 - - 2,016 823 129 13,961 - 13,961 Doubtful - - - - - - - - - Loss - - - - - - - - - Total $ 127,174 $ 87,921 $ 78,200 $ 80,663 $ 84,465 $ 76,838 $ 535,261 $ - $ 535,261 At December 31, 2021 Revolving Loans Term Loans Amortized Cost Basis by Origination Year Total Amortized Prior 2017 2018 2019 2020 2021 Term Loans Cost Basis Total (In thousands) Construction loans by grade Pass $ - $ - $ - $ - $ - $ - $ - $ 48 $ 48 Substandard - - - - - - - - - Doubtful - - - - - - - - - Loss - - - - - - - - - Total $ - $ - $ - $ - $ - $ - $ - $ 48 $ 48 At December 31, 2021 Revolving Loans Term Loans Amortized Cost Basis by Origination Year Total Amortized Prior 2017 2018 2019 2020 2021 Term Loans Cost Basis Total (In thousands) Residential Real Estate loans by grade Pass $ 16,874 $ - $ - $ - $ - $ - $ 16,874 $ - $ 16,874 Substandard 1,259 - - - - - 1,259 - 1,259 Doubtful - - - - - - - - - Loss - - - - - - - - - Total $ 18,133 $ - $ - $ - $ - $ - $ 18,133 $ - $ 18,133 At December 31, 2021 Revolving Loans Term Loans Amortized Cost Basis by Origination Year Total Amortized Prior 2017 2018 2019 2020 2021 Term Loans Cost Basis Total (In thousands) Consumer installment and other loans by delinquency and nonaccrual status Current $ 7,884 $ 10,162 $ 25,932 $ 37,999 $ 58,178 $ 113,899 $ 254,054 $ 22,739 $ 276,793 30-59 days past due 197 139 634 504 662 1,034 3,170 14 3,184 60-89 days past due 5 20 156 150 186 408 925 88 1,013 Past due 90 days or more 1 17 81 62 109 40 310 29 339 Nonaccrual - - - - - - - 265 265 Total $ 8,087 $ 10,338 $ 26,803 $ 38,715 $ 59,135 $ 115,381 $ 258,459 $ 23,135 $ 281,594

Note 5 - Premises, Equipment,_2

Note 5 - Premises, Equipment, Other Assets and Other Liabilities (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Premises and Equipment [Table Text Block]	At December 31, Cost Accumulated Depreciation and Amortization Net Book Value (In thousands) 2021 Land $ 11,453 $ - $ 11,453 Building and improvements 43,009 (30,069 ) 12,940 Leasehold improvements 7,567 (5,967 ) 1,600 Furniture and equipment 26,642 (21,480 ) 5,162 Total $ 88,671 $ (57,516 ) $ 31,155 2020 Land $ 11,453 $ - $ 11,453 Building and improvements 42,960 (28,922 ) 14,038 Leasehold improvements 6,944 (5,528 ) 1,416 Furniture and equipment 26,227 (20,321 ) 5,906 Total $ 87,584 $ (54,771 ) $ 32,813
Schedule of Other Assets [Table Text Block]	At December 31, 2021 2020 (In thousands) Cost method equity investments: Federal Reserve Bank stock (1) $ 14,069 $ 14,069 Other investments 158 158 Total cost method equity investments 14,227 14,227 Life insurance cash surrender value 63,107 60,444 Right-of-use asset 17,980 18,832 Limited partnership investments 37,145 18,335 Interest receivable 35,521 33,022 Prepaid assets 4,757 4,572 Other assets 12,678 10,471 Total other assets $ 185,415 $ 159,903
Schedule of Amounts Recognized in Net Income [Table Text Block]	For the Years Ended December 31, 2021 2020 2019 (In thousands) Investment loss included in pre-tax income $ 2,620 $ 2,440 $ 2,400 Tax credits recognized in provision for income taxes 2,300 900 875
Other Liabilities [Table Text Block]	At December 31, 2021 2020 (In thousands) Net deferred tax liability $ 2,501 $ 25,778 Operating lease liability 17,980 18,832 Securities purchases pending settlement - 29,000 Other liabilities 53,241 38,988 Total other liabilities $ 73,722 $ 112,598
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	Minimum At December 31, 2021 (In thousands) 2022 $ 5,698 2023 4,984 2024 3,393 2025 2,201 2026 786 Thereafter 1,478 Total minimum lease payments 18,540 Less: discount (560 ) Present value of lease liability $ 17,980

Note 6 - Goodwill and Identif_2

Note 6 - Goodwill and Identifiable Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Goodwill [Table Text Block]	At December 31, 2021 At December 31, 2020 (In thousands) Goodwill $ 121,673 $ 121,673
Schedule of Finite-Lived Intangible Assets [Table Text Block]	At December 31, 2021 At December 31, 2020 Gross Gross Carrying Accumulated Carrying Accumulated Amount Amortization Amount Amortization (In thousands) Core deposit intangibles $ 56,808 $ (55,973 ) $ 56,808 $ (55,704 )
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	Total Core Deposit Intangibles (In thousands) For the year ended Decptember 31, 2021 (actual) $ 269 Estimate for year ending December 31, 2022 252 2023 236 2024 222 2025 125

Note 7 - Deposits and Borrowe_2

Note 7 - Deposits and Borrowed Funds (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Deposit Liabilities, Type [Table Text Block]	Deposits At December 31, At December 31, 2021 2020 (In thousands) Noninterest-bearing $ 3,069,080 $ 2,725,177 Interest-bearing: Transaction 1,260,869 1,102,601 Savings 1,940,395 1,703,812 Time deposits less than $100 thousand 72,527 79,825 Time deposits $100 thousand through $250 thousand 47,666 49,323 Time deposits more than $250 thousand 23,419 27,241 Total deposits $ 6,413,956 $ 5,687,979
Schedule of Repurchase Agreements [Table Text Block]	Repurchase Agreements (Sweep) Remaining Contractual Maturity of the Agreements Overnight and Continuous At December 31, At December 31, 2021 2020 Repurchase agreements: (In thousands) Collateral securing borrowings: Agency residential MBS $ 42,295 $ 67,019 Corporate securities 254,005 188,195 Total collateral carrying value $ 296,300 $ 255,214 Total short-term borrowed funds $ 146,246 $ 102,545
Borrowed Funds Highest Month End Balance [Table Text Block]	For the Years Ended December 31, 2021 2020 Highest Balance at Any Month-end (In thousands) Securities sold under repurchase agreements $ 146,552 $ 110,846

Note 8 - Shareholders' Equity (

Note 8 - Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Share-based Payment Arrangement, Option, Exercise Price Range [Table Text Block]	Options Outstanding Options Exercisable At December 31, 2021 For the Year Ended December 31, 2021 At December 31, 2021 For the Year Ended December 31, 2021 Range of Exercise Price Number Outstanding Aggregate Intrinsic Value Weighted Average Remaining Contractual Life Weighted Average Exercise Price Number Exercisable Aggregate Intrinsic Value Weighted Average Remaining Contractual Life Weighted Average Exercise Price (In thousands) (Years) (In thousands) (Years) 400 -455 34 $ 527 3.8 $ 42 34 $ 527 3.8 $ 42 45 - 50 - - - - - - - - 50 - 55 15 67 2.1 53 15 67 2.1 53 55 - 60 260 161 7.8 57 83 46 5.1 57 60 - 65 316 6.6 62 258 6.5 62 65 - 70 168 - 8.1 66 56 - 8 66 400 -700 793 $ 755 7.1 60 446 $ 640 6.1 60
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	For the Years Ended December 31, 2021 2020 2019 Expected volatility (1) 20 % 20 % 20 % Expected life in years (2) 4.7 3.5 4.7 Risk-free interest rate (3) 0.46 % 1.52 % 2.67 % Expected dividend yield 2.79 % 2.59 % 2.55 % Fair value per award $ 7.50 $ 8.64 $ 10.19
Share-based Payment Arrangement, Option, Activity [Table Text Block]	Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (In thousands) (Years) Outstanding at January 1, 2021 693 $ 61.25 Granted 193 57.08 Exercised (53 ) 56.82 Forfeited or expired (40 ) 62.14 Outstanding at December 31, 2021 793 60.48 7.1 Exercisable at December 31, 2021 446 60.07 6.1
Schedule of Nonvested Share Activity [Table Text Block]	Shares Weighted Average Grant Date Fair Value (In thousands) Nonvested at January 1, 2021 373 $ 9.39 Granted 193 7.50 Vested (185 ) 9.61 Forfeited (34 ) 8.42 Nonvested at December 31, 2021 347 $ 8.31
Share-based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]	2021 2020 (In thousands) Outstanding at January 1, 28 27 Granted 13 10 Issued upon vesting (9 ) (9 ) Forfeited (2 ) - Outstanding at December 31, 30 28

Note 9 - Regulatory Capital (Ta

Note 9 - Regulatory Capital (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block]	At December 31, 2021 Required To Be Well-capitalized Amount Ratio Amount Ratio Amount Ratio ($ in thousands) Common Equity Tier 1 Capital Company $ 653,026 14.93 % $ 306,277 7.00 % N/A N/A Bank 540,538 12.48 % 303,111 7.00 % $ 281,460 6.50 % Tier 1 Capital Company 653,026 14.93 % 371,908 8.50 % N/A N/A Bank 540,538 12.48 % 368,063 8.50 % 346,412 8.00 % Total Capital Company 676,749 15.47 % 459,416 10.50 % N/A N/A Bank 570,260 13.17 % 454,666 10.50 % 433,016 10.00 % Leverage Ratio (1) Company 653,026 9.06 % 288,423 4.00 % N/A N/A Bank 540,538 7.55 % 286,432 4.00 % 358,040 5.00 % At December 31, 2020 Required To Be Well-capitalized Amount Ratio Amount Ratio Amount Ratio ($ in thousands) Common Equity Tier 1 Capital Company $ 604,833 16.04 % $ 263,903 7.00 % N/A N/A Bank 484,270 13.00 % 260,755 7.00 % $ 242,130 6.50 % Tier 1 Capital Company 604,833 16.04 % 320,454 8.50 % N/A N/A Bank 484,270 13.00 % 316,632 8.50 % 298,006 8.00 % Total Capital Company 628,797 16.68 % 395,855 10.50 % N/A N/A Bank 514,234 13.80 % 391,133 10.50 % 372,508 10.00 % Leverage Ratio (1) Company 604,833 9.40 % 257,488 4.00 % N/A N/A Bank 484,270 7.58 % 255,560 4.00 % 319,451 5.00 %

Note 10 - Income Taxes (Tables)

Note 10 - Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	At December 31, 2021 2020 (In thousands) Deferred tax asset Allowance for credit losses $ 6,852 $ 6,789 State franchise taxes 2,518 2,262 Deferred compensation 4,524 4,789 Purchased assets and assumed liabilities 475 552 Post-retirement benefits 445 480 Employee benefit accruals 2,792 2,353 VISA Class B shares 348 284 Limited partnership investments - 1,066 Impaired capital assets 2,673 2,429 Accrued liabilities 748 416 Premises and equipment 1,001 585 Lease liability 5,263 5,513 Other 103 800 Sub total deferred tax asset 27,742 28,318 Tax valuation (1,776 ) - Total deferred tax asset 25,966 28,318 Deferred tax liability Net deferred loan fees 196 106 Securities available for sale 20,845 48,021 Right-of-use asset 5,263 5,513 Intangible assets 459 456 Limited partnership investments 1,704 - Total deferred tax liability 28,467 54,096 Net deferred tax liability $ (2,501 ) $ (25,778 )
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	For the Years Ended December 31, 2021 2020 2019 (In thousands) Current income tax expense: Federal $ 15,299 $ 15,982 $ 11,570 State 11,320 10,654 9,595 Total current 26,619 26,636 21,165 Deferred income tax expense (benefit): Federal 1,281 (538 ) 2,411 State 842 292 982 Total deferred 2,123 (246 ) 3,393 Change in valuation reserve: Federal (472 ) - (71 ) State 2,248 - 340 Total change in valuation reserve 1,776 - 269 Provision for income taxes $ 30,518 $ 26,390 $ 24,827
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	For the Years Ended December 31, 2021 2020 2019 (In thousands) Federal income taxes due at statutory rate $ 24,576 $ 22,429 $ 22,095 Additions (reductions) in income taxes resulting from: Interest on state and municipal securities and loans not taxable for federal income tax purposes (2,070 ) (2,808 ) (3,584 ) State franchise taxes, net of federal income tax benefit 9,757 8,647 8,625 Change in valuation reserve 1,776 - 269 Stock compensation deduction in excess of book expense - (62 ) (312 ) Tax credits (2,621 ) (1,061 ) (1,040 ) Dividend received deduction (48 ) (44 ) (38 ) Cash value life insurance (389 ) (383 ) (464 ) Other (463 ) (328 ) (724 ) Provision for income taxes $ 30,518 $ 26,390 $ 24,827

Note 11 - Fair Value Measurem_2

Note 11 - Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Fair Value, Assets Measured on Recurring Basis [Table Text Block]	At December 31, 2021 Fair Value Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs (1) (In thousands) Debt securities available for sale Agency residential mortgage-backed securities (MBS) $ 411,726 $ - $ 411,726 $ - Securities of U.S. Government entities 119 - 119 - Obligations of states and political subdivisions 93,920 - 93,920 - Corporate securities 2,746,735 - 2,746,735 - Collateralized loan obligations 1,386,355 - 1,386,355 - Total debt securities available for sale $ 4,638,855 $ - $ 4,638,855 $ - At December 31, 2020 Fair Value Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs (1) (In thousands) Debt securities available for sale Agency residential MBS $ 652,952 $ - $ 652,952 $ - Securities of U.S. Government entities 154 - 154 - Obligations of states and political subdivisions 111,010 - 111,010 - Corporate securities 2,117,978 - 2,117,978 - Commercial paper 24,990 - 24,990 - Collateralized loan obligations 1,156,101 - 1,156,101 - Total debt securities available for sale $ 4,063,185 $ - $ 4,063,185 $ -
Fair Value Measurements, Nonrecurring [Table Text Block]	For the Year Ended At December 31, 2021 December 31, 2021 Carrying Value Level 1 Level 2 Level 3 Total Losses (In thousands) Loans: Commercial real estate $ 225 $ - $ - $ 225 $ - Residential real estate 172 - - 172 - Total assets measured at fair value on a nonrecurring basis $ 397 $ - $ - $ 397 $ - For the Year Ended At December 31, 2020 December 31, 2020 Carrying Value Level 1 Level 2 Level 3 Total Losses (In thousands) Loans: Commercial $ 5,270 $ - $ - $ 5,270 $ - Commercial real estate 3,710 - - 3,710 - Residential real estate 181 - - 181 - Total assets measured at fair value on a nonrecurring basis $ 9,161 $ - $ - $ 9,161 $ -
Fair Value, by Balance Sheet Grouping [Table Text Block]	At December 31, 2021 Carrying Amount Estimated Fair Value Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Financial Assets: (In thousands) Cash and due from banks $ 1,132,085 $ 1,132,085 $ 1,132,085 $ - $ - Debt securities held to maturity 306,396 312,562 - 312,562 - Loans 1,044,612 1,059,072 - - 1,059,072 Financial Liabilities: Deposits $ 6,413,956 $ 6,413,244 $ - $ 6,270,344 $ 142,900 Short-term borrowed funds 146,246 146,246 - 146,246 - At December 31, 2020 Carrying Amount Estimated Fair Value Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Financial Assets: (In thousands) Cash and due from banks $ 621,275 $ 621,275 $ 621,275 $ - $ - Debt securities held to maturity 515,589 529,678 - 529,678 - Loans 1,232,389 1,290,938 - - 1,290,938 Financial Liabilities: Deposits $ 5,687,979 $ 5,688,049 $ - $ 5,531,590 $ 156,459 Short-term borrowed funds 102,545 102,545 - 102,545 -

Note 13 - Retirement Benefit _2

Note 13 - Retirement Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Net Benefit Costs [Table Text Block]	At December 31, 2021 2020 2019 (In thousands) Service benefit $ (15 ) $ (35 ) $ (57 ) Interest cost 30 52 72 Net periodic cost $ 15 $ 17 $ 15
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Table Text Block]	At December 31, 2021 2020 2019 Change in benefit obligation (In thousands) Benefit obligation at beginning of year $ 1,654 $ 1,782 $ 1,913 Service benefit (15 ) (35 ) (57 ) Interest cost 30 52 72 Benefits paid (142 ) (145 ) (146 ) Benefit obligation at end of year $ 1,527 $ 1,654 $ 1,782 Accumulated post-retirement benefit obligation attributable to: Retirees $ 1,527 $ 1,654 $ 1,782 Other - - - Total $ 1,527 $ 1,654 $ 1,782 Fair value of plan assets - - - Accumulated post-retirement benefit obligation in excess of plan assets $ 1,527 $ 1,654 $ 1,782
Defined Benefit Plan, Assumptions [Table Text Block]	At December 31, 2021 2020 2019 Weighted-average assumptions used to determine benefit obligations Discount rate 2.46 % 1.80 % 2.90 % Weighted-average assumptions used to determine net periodic benefit cost Discount rate 1.80 % 2.90 % 3.76 %
Schedule of Expected Benefit Payments [Table Text Block]	Estimated future benefit payments (In thousands) 2022 $ 143 2023 143 2024 142 2025 142 2026 135 Years 2027-2031 534

Note 14 - Related Party Trans_2

Note 14 - Related Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Related Party Transactions [Table Text Block]	2021 2020 ($ in thousands) Balance at January 1, $ 499 $ 533 Originations - - Principal reductions (45 ) (34 ) Balance at December 31, $ 454 $ 499 Percent of total loans outstanding. 0.04 % 0.04 %

Note 16 - Other Comprehensive_2

Note 16 - Other Comprehensive Income (Loss) (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Comprehensive Income (Loss) [Table Text Block]	2021 Before tax Tax effect Net of tax (In thousands) Debt securities available for sale: Changes in net unrealized gains arising during the year $ (91,891 ) $ 27,167 $ (64,724 ) Reclassification of gains included in net income (34 ) 10 (24 ) Other comprehensive income $ (91,925 ) $ 27,177 $ (64,748 ) 2020 Before tax Tax effect Net of tax (In thousands) Debt securities available for sale: Changes in net unrealized gains arising during the year $ 125,519 $ (37,108 ) $ 88,411 Reclassification of gains included in net income (71 ) 21 (50 ) Other comprehensive income $ 125,448 $ (37,087 ) $ 88,361 2019 Before tax Tax effect Net of tax (In thousands) Debt securities available for sale: Changes in net unrealized gains arising during the year $ 93,936 $ (27,771 ) $ 66,165 Reclassification of gains included in net income (167 ) 49 (118 ) Other comprehensive income $ 93,769 $ (27,722 ) $ 66,047
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	Accumulated Other Comprehensive (Loss) Income (In thousands) Balance, December 31, 2018 $ (39,996 ) Changes in unrealized (losses) gains on debt securities available for sale, net of tax 66,047 Balance, December 31, 2019 26,051 Changes in unrealized gains on debt securities available for sale, net of tax 88,361 Balance, December 31, 2020 114,412 Changes in unrealized gains on debt securities available for sale, net of tax (64,748 ) Balance, December 31, 2021 $ 49,664

Note 17 - Earnings Per Common_2

Note 17 - Earnings Per Common Share (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	For the Years Ended December 31, 2021 2020 2019 (In thousands, except per share data) Net income (numerator) $ 86,509 $ 80,413 $ 80,389 Basic earnings per common share Weighted average number of common shares outstanding - basic (denominator) 26,855 26,942 26,956 Basic earnings per common share $ 3.22 $ 2.98 $ 2.98 Diluted earnings per common share Weighted average number of common shares outstanding - basic 26,855 26,942 26,956 Add common stock equivalents for options 15 18 50 Weighted average number of common shares outstanding - diluted (denominator) 26,870 26,960 27,006 Diluted earnings per common share $ 3.22 $ 2.98 $ 2.98

Note 18 - Westamerica Bancorp_2

Note 18 - Westamerica Bancorporation (Parent Company Only Condensed Financial Information) (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Statements of Income and Comprehensive Income, Parent Only [Table Text Block]	For the Years Ended December 31, 2021 2020 2019 (In thousands) Dividends from subsidiaries $ 29,279 $ 10,783 $ 80,067 Interest income 44 56 54 Other income 11,608 11,438 8,778 Total income 40,931 22,277 88,899 Salaries and benefits 6,612 7,107 6,978 Other expense 2,279 2,206 3,729 Total expense 8,891 9,313 10,707 Income before taxes and equity in undistributed income of subsidiaries 32,040 12,964 78,192 Income tax (expense) benefit (645 ) (454 ) 636 Earnings of subsidiaries greater than subsidiary dividends 55,114 67,903 1,561 Net income 86,509 80,413 80,389 Other comprehensive (loss) income, net of tax (64,748 ) 88,361 66,047 Comprehensive income $ 21,761 $ 168,774 $ 146,436
Balance Sheets Parent Only [Table Text Block]	At December 31, 2021 2020 (In thousands) Assets Cash $ 69,943 $ 78,364 Investment in Westamerica Bank 720,614 730,248 Investment in non-bank subsidiaries 454 455 Premises and equipment, net 9,968 10,459 Accounts receivable from Westamerica Bank 224 257 Other assets 42,026 40,852 Total assets $ 843,229 $ 860,635 Liabilities Accounts payable to Westamerica Bank $ 62 $ 29 Other liabilities 16,065 15,797 Total liabilities 16,127 15,826 Shareholders' equity 827,102 844,809 Total liabilities and shareholders' equity $ 843,229 $ 860,635
Statement of Cash Flows Parent Only [Table Text Block]	For the Years Ended December 31, 2021 2020 2019 (In thousands) Operating Activities Net income $ 86,509 $ 80,413 $ 80,389 Adjustments to reconcile net income to net cash provided by operating activities: Depreciation and amortization 569 608 449 Decrease (increase) in accounts receivable from affiliates 117 (150 ) 80 Increase in other assets (1,223 ) (2,421 ) (71 ) Stock option compensation expense 1,419 1,875 1,744 Provision (benefit) for deferred income tax 645 428 (315 ) Increase in other liabilities 254 855 856 Earnings of subsidiaries greater than subsidiary dividends (55,114 ) (67,903 ) (1,561 ) Gain on disposal of premises and equipment - (61 ) (1,055 ) Net Cash Provided by Operating Activities 33,176 13,644 80,516 Investing Activities Purchases of equipment (78 ) - - Net Cash Used by Investing Activities (78 ) - - Financing Activities Exercise of stock options 3,017 2,838 13,699 Retirement of common stock (232 ) (16,496 ) (488 ) Common stock dividends paid (44,304 ) (44,285 ) (43,942 ) Net Cash Used in Financing Activities (41,519 ) (57,943 ) (30,731 ) Net change in cash and due from banks (8,421 ) (44,299 ) 49,785 Cash and due from banks at beginning of period 78,364 122,663 72,878 Cash and due from banks at end of period $ 69,943 $ 78,364 $ 122,663 Supplemental Cash Flow Disclosures: Supplemental disclosure of cash flow activities: Interest paid for the period $ - $ - $ - Income tax payments for the period 27,673 26,462 24,491

Note 19 - Quarterly Financial_2

Note 19 - Quarterly Financial Information (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2021
Notes Tables
Quarterly Financial Information [Table Text Block]	For the Three Months Ended March 31, June 30, September 30, December 31, (In thousands, except per share data and price range of common stock) 2021 Interest and loan fee income $ 42,316 $ 44,276 $ 43,810 $ 43,041 Net interest income 41,841 43,792 43,318 42,537 Provision for loan losses - - - - Noninterest income 10,189 11,032 11,282 10,842 Noninterest expense 24,906 24,291 24,697 23,912 Income before taxes 27,124 30,533 29,903 29,467 Net income 20,147 22,579 22,063 21,720 Basic earnings per common share 0.75 0.84 0.82 0.81 Diluted earnings per common share 0.75 0.84 0.82 0.81 Dividends paid per common share 0.41 0.41 0.41 0.42 Price range, common stock 55.82 - 66.43 57.67 - 64.80 54.03 - 58.55 53.78 - 58.00 2020 Interest and loan fee income $ 39,991 $ 41,539 $ 41,365 $ 42,961 Net interest income 39,549 41,104 40,899 42,480 Provision for loan losses 4,300 - - - Noninterest income 11,648 9,554 10,476 13,959 Noninterest expense 24,664 24,754 24,603 24,545 Income before taxes 22,233 25,904 26,772 31,894 Net income 16,962 19,562 20,051 23,838 Basic earnings per common share 0.63 0.72 0.74 0.89 Diluted earnings per common share 0.63 0.72 0.74 0.89 Dividends paid per common share 0.41 0.41 0.41 0.41 Price range, common stock 47.37 - 68.01 53.40 - 64.86 51.84 - 63.58 51.49 - 59.70 2019 Interest and loan fee income $ 39,483 $ 39,626 $ 39,695 $ 39,878 Net interest income 38,989 39,139 39,240 39,427 Provision for loan losses - - - - Noninterest income 11,579 12,288 11,809 11,732 Noninterest expense 25,183 25,561 24,033 24,209 Income before taxes 25,385 25,866 27,016 26,950 Net income 19,646 19,625 20,390 20,728 Basic earnings per common share 0.73 0.73 0.76 0.77 Diluted earnings per common share 0.73 0.73 0.75 0.77 Dividends paid per common share 0.40 0.41 0.41 0.41 Price range, common stock 56.82 - 64.48 59.51 - 64.82 59.26 - 64.56 60.65 - 68.58

Note 1 - Business and Account_3

Note 1 - Business and Accounting Policies (Details Textual) $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)	Jan. 01, 2020USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Number of Reportable Segments	1
Financing Receivable, after Allowance for Credit Loss, Total	$ 1,044,612	$ 1,232,389
Equity Securities, FV-NI, Total	$ 0	0
Loans and Leases Receivable, Days Before Nonaccrual Status (Day)	90 days
Loans and Leases Receivable, Certain Consumer Loans and Auto Receivables, Days Before Chargeoff (Day)	120 days
Financing Receivable, Allowance for Credit Loss, Ending Balance	$ 23,514	23,854		$ 19,484	$ 21,351
Reserve for Unfunded Commitments			$ 2,160
Retained Earnings (Accumulated Deficit), Ending Balance	$ 306,395	264,356
Accounting Standards Update 2016-13 [Member]
Financing Receivable, Allowance for Credit Loss, Ending Balance			2,017
Retained Earnings (Accumulated Deficit), Ending Balance			52
Maximum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	15 years
Land and Land Improvements [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	20 years
Land and Land Improvements [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	50 years
Equipment [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	3 years
Equipment [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	20 years
Unfunded Loan Commitment [Member] | Accounting Standards Update 2016-13 [Member]
Reserve for Unfunded Commitments			$ (2,107)
Commercial Portfolio Segment [Member]
Financing Receivable, Loan Deferrals	$ 84,000
Financing Receivable, Allowance for Credit Loss, Ending Balance	6,966	$ 9,205		$ 4,959	$ 6,311
Commercial Portfolio Segment [Member] | Paycheck Protection Program Loans [Member]
Financing Receivable, after Allowance for Credit Loss, Total	$ 46,000

Note 1 - Business and Account_4

Note 1 - Business and Accounting Policies - Impact of Adoption of ASU 2016-13 (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Jan. 01, 2020	Dec. 31, 2019
Allowance for credit losses (loans)			$ 19,484
Debt Securities, Held-to-maturity, Allowance for Credit Loss, Ending Balance	$ 7	$ 9	0	$ 0
Allowance for credit losses for unfunded commitments			2,160
Cumulative Effect, Period of Adoption, Adjustment [Member]
Debt Securities, Held-to-maturity, Allowance for Credit Loss, Ending Balance		0		16
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member]
Allowance for credit losses (loans)			2,017
Debt Securities, Held-to-maturity, Allowance for Credit Loss, Ending Balance			16
Allowance for credit losses for unfunded commitments			(2,107)
Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Allowance for credit losses (loans)			21,501
Debt Securities, Held-to-maturity, Allowance for Credit Loss, Ending Balance		$ 9	16	$ 16
Allowance for credit losses for unfunded commitments			53
Commercial Portfolio Segment [Member]
Allowance for credit losses (loans)			4,959
Commercial Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member]
Allowance for credit losses (loans)			3,385
Commercial Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Allowance for credit losses (loans)			8,344
Commercial Real Estate Portfolio Segment [Member]
Allowance for credit losses (loans)			4,064
Commercial Real Estate Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member]
Allowance for credit losses (loans)			618
Commercial Real Estate Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Allowance for credit losses (loans)			4,682
Construction Portfolio Segment [Member]
Allowance for credit losses (loans)			109
Construction Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member]
Allowance for credit losses (loans)			(31)
Construction Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Allowance for credit losses (loans)			78
Residential Portfolio Segment [Member]
Allowance for credit losses (loans)			206
Residential Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member]
Allowance for credit losses (loans)			(132)
Residential Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Allowance for credit losses (loans)			74
Consumer Portfolio Segment [Member]
Allowance for credit losses (loans)			6,445
Consumer Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member]
Allowance for credit losses (loans)			1,878
Consumer Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Allowance for credit losses (loans)			8,323
Unallocated Financing Receivables [Member]
Allowance for credit losses (loans)			3,701
Unallocated Financing Receivables [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member]
Allowance for credit losses (loans)			(3,701)
Unallocated Financing Receivables [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Allowance for credit losses (loans)			$ 0

Note 2 - Investment Securitie_2

Note 2 - Investment Securities (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Jan. 01, 2020	Dec. 31, 2019
Debt Securities, Held-to-maturity, Allowance for Credit Loss, Ending Balance	$ 7	$ 9	$ 0	$ 0
Other-than-temporary Impairment Loss, Debt Securities, Available-for-sale, Total	0
Pledged Financial Instruments, Not Separately Reported, Securities, Total	$ 1,021,566	$ 888,577

Note 2 - Investment Securitie_3

Note 2 - Investment Securities - Amortized Cost, Unrealized Gains and Losses, and Estimated Fair Value of Investment Securities Portfolio (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Debt securities available for sale, amortized cost	$ 4,568,346	$ 3,900,751
Debt securities available for sale, gross unrealized gains	80,924	163,576
Debt securities available for sale, gross unrealized losses	(10,415)	(1,142)
Debt securities available for sale	4,638,855	4,063,185
Held to maturity	306,403	515,598
Debt securities held to maturity, gross unrecognized gains	6,196	14,121
Debt securities held to maturity, gross unrecognized losses	(37)	(32)
Debt securities held to maturity, fair value	312,562	529,687
Debt securities, amortized cost	4,874,749	4,416,349
Debt securities, gross unrecognized gains	87,120	177,697
Debt securities, gross unrecognized losses	(10,452)	(1,174)
Debt securities, fair value	4,951,417	4,592,872
Agency Residential MBS [Member]
Debt securities available for sale, amortized cost	399,997	630,174
Debt securities available for sale, gross unrealized gains	11,766	22,779
Debt securities available for sale, gross unrealized losses	(37)	(1)
Debt securities available for sale	411,726	652,952
Held to maturity	147,632	240,332
Debt securities held to maturity, gross unrecognized gains	3,112	6,852
Debt securities held to maturity, gross unrecognized losses	(18)	(32)
Debt securities held to maturity, fair value	150,726	247,152
US Government Agencies Debt Securities [Member]
Debt securities available for sale, amortized cost	119	154
Debt securities available for sale, gross unrealized gains	0	0
Debt securities available for sale, gross unrealized losses	0	0
Debt securities available for sale	119	154
US States and Political Subdivisions Debt Securities [Member]
Debt securities available for sale, amortized cost	90,107	105,679
Debt securities available for sale, gross unrealized gains	3,842	5,332
Debt securities available for sale, gross unrealized losses	(29)	(1)
Debt securities available for sale	93,920	111,010
Held to maturity	158,013	273,922
Debt securities held to maturity, gross unrecognized gains	3,082	7,243
Debt securities held to maturity, gross unrecognized losses	0	0
Debt securities held to maturity, fair value	161,095	281,165
Debt Security, Corporate, US [Member]
Debt securities available for sale, amortized cost	2,692,792	1,986,995
Debt securities available for sale, gross unrealized gains	63,573	131,025
Debt securities available for sale, gross unrealized losses	(9,630)	(42)
Debt securities available for sale	2,746,735	2,117,978
Collateralized Debt Obligations [Member]
Debt securities available for sale, amortized cost	1,385,331	1,152,766
Debt securities available for sale, gross unrealized gains	1,743	4,433
Debt securities available for sale, gross unrealized losses	(719)	(1,098)
Debt securities available for sale	1,386,355	1,156,101
Commercial Paper, Not Included with Cash and Cash Equivalents [Member]
Debt securities available for sale, amortized cost		24,983
Debt securities available for sale, gross unrealized gains		7
Debt securities available for sale, gross unrealized losses		0
Debt securities available for sale		24,990
Non-agency Residential MBS [Member]
Held to maturity	758	1,344
Debt securities held to maturity, gross unrecognized gains	2	26
Debt securities held to maturity, gross unrecognized losses	(19)	0
Debt securities held to maturity, fair value	$ 741	$ 1,370

Note 2 - Investment Securitie_4

Note 2 - Investment Securities - Amortized Cost and Estimated Market Value of Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Investment securities available for sale, amortized cost, 1 year or less	$ 306,333	$ 212,140
Investment securities available for sale, fair value, 1 year or less	309,257	213,715
Investment securities held to maturity, amortized cost, 1 year or less	15,836	54,526
Investment securities held to maturity, fair value, 1 year or less	15,941	54,927
Investment securities available for sale, amortized cost, over 1 to 5 years	707,062	922,170
Investment securities available for sale, fair value, over 1 to 5 years	738,057	974,438
Investment securities held to maturity, amortized cost, over 1 to 5 years	125,001	129,786
Investment securities held to maturity, fair value, over 1 to 5 years	127,539	133,195
Investment securities available for sale, amortized cost, over 5 to 10 years	2,320,559	1,767,747
Investment securities available for sale, fair value, over 5 to 10 years	2,347,242	1,851,184
Investment securities held to maturity, amortized cost, over 5 to 10 years	17,176	89,610
Investment securities held to maturity, fair value, over 5 to 10 years	17,615	93,043
Investment securities available for sale, amortized cost, over 10 years	834,395	368,520
Investment securities available for sale, fair value, over 10 years	832,573	370,896
Investment securities held to maturity, amortized cost, over 10 years	0	0
Investment securities held to maturity, fair value, over 10 years	0	0
Investment securities available for sale, amortized cost, subtotal	4,168,349	3,270,577
Investment securities available for sale, fair value, subtotal	4,227,129	3,410,233
Investment securities held to maturity, amortized cost, subtotal	158,013	273,922
Investment securities held to maturity, fair value, subtotal	161,095	281,165
Investment securities available for sale, amortized cost	399,997	630,174
Investment securities available for sale, fair value	411,726	652,952
Investment securities held to maturity, amortized cost	148,390	241,676
Investment securities held to maturity, fair value	151,467	248,522
Investment securities available for sale, amortized cost	4,568,346	3,900,751
Investment securities available for sale, fair value	4,638,855	4,063,185
Investment securities held to maturity, amortized cost	306,403	515,598
Investment securities held to maturity, fair value	$ 312,562	$ 529,687

Note 2 - Investment Securitie_5

Note 2 - Investment Securities - Gross Unrealized Losses, Investment Securities Portfolio (Details) $ in Thousands	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)
Available for sale securities, less than 12 months, number of investment positions	88	40
Available for sale securities, less than 12 months, fair value	$ 911,513	$ 269,526
Available for sale securities, less than 12 months, unrealized losses	$ (10,215)	$ (1,100)
Available for sale securities, 12 months or longer, number of investment positions	13	2
Available for sale securities, 12 months or longer, fair value	$ 52,358	$ 14,980
Available for sale securities, 12 months or longer, unrealized losses	$ (200)	$ (42)
Available for sale securities, total, number of investment positions	101	42
Available for sale securities, total, fair value	$ 963,871	$ 284,506
Available for sale securities, total, unrealized losses	$ (10,415)	$ (1,142)
Held to Maturity securities, less than 12 months, number of investment positions	1
Held to Maturity securities, less than 12 months, fair value	$ 542
Held to Maturity securities, less than 12 months, unrecognized losses	$ (19)
Held to Maturity securities, 12 months or longer, number of investment positions	3
Held to Maturity securities, 12 months or longer, fair value	$ 530
Held to Maturity securities, 12 months or longer, unrecognized losses	$ (18)
Held to Maturity securities, total, number of investment positions	4
Held to Maturity securities, total, fair value	$ 1,072
Held to Maturity securities, total, unrecognized losses	$ (37)
Agency Residential MBS [Member]
Available for sale securities, less than 12 months, number of investment positions	7	1
Available for sale securities, less than 12 months, fair value	$ 8,900	$ 96
Available for sale securities, less than 12 months, unrealized losses	$ (37)	$ (1)
Available for sale securities, 12 months or longer, number of investment positions	2	1
Available for sale securities, 12 months or longer, fair value	$ 47	$ 17
Available for sale securities, 12 months or longer, unrealized losses	$ 0	$ 0
Available for sale securities, total, number of investment positions	9	2
Available for sale securities, total, fair value	$ 8,947	$ 113
Available for sale securities, total, unrealized losses	$ (37)	$ (1)
Held to Maturity securities, less than 12 months, number of investment positions	0	3
Held to Maturity securities, less than 12 months, fair value	$ 0	$ 377
Held to Maturity securities, less than 12 months, unrecognized losses	$ 0	$ (1)
Held to Maturity securities, 12 months or longer, number of investment positions	3	3
Held to Maturity securities, 12 months or longer, fair value	$ 530	$ 788
Held to Maturity securities, 12 months or longer, unrecognized losses	$ (18)	$ (31)
Held to Maturity securities, total, number of investment positions	3	6
Held to Maturity securities, total, fair value	$ 530	$ 1,165
Held to Maturity securities, total, unrecognized losses	$ (18)	$ (32)
US Government Agencies Debt Securities [Member]
Available for sale securities, less than 12 months, number of investment positions	0	1
Available for sale securities, less than 12 months, fair value	$ 0	$ 154
Available for sale securities, less than 12 months, unrealized losses	$ 0	$ 0
Available for sale securities, 12 months or longer, number of investment positions	1	0
Available for sale securities, 12 months or longer, fair value	$ 119	$ 0
Available for sale securities, 12 months or longer, unrealized losses	$ 0	$ 0
Available for sale securities, total, number of investment positions	1	1
Available for sale securities, total, fair value	$ 119	$ 154
Available for sale securities, total, unrealized losses	$ 0	$ 0
Non-agency Residential MBS [Member]
Held to Maturity securities, less than 12 months, number of investment positions	1
Held to Maturity securities, less than 12 months, fair value	$ 542
Held to Maturity securities, less than 12 months, unrecognized losses	$ (19)
Held to Maturity securities, 12 months or longer, number of investment positions	0
Held to Maturity securities, 12 months or longer, fair value	$ 0
Held to Maturity securities, 12 months or longer, unrecognized losses	$ 0
Held to Maturity securities, total, number of investment positions	1
Held to Maturity securities, total, fair value	$ 542
Held to Maturity securities, total, unrecognized losses	$ (19)
US States and Political Subdivisions Debt Securities [Member]
Available for sale securities, less than 12 months, number of investment positions	6	2
Available for sale securities, less than 12 months, fair value	$ 2,859	$ 692
Available for sale securities, less than 12 months, unrealized losses	$ (27)	$ (1)
Available for sale securities, 12 months or longer, number of investment positions	2	0
Available for sale securities, 12 months or longer, fair value	$ 669	$ 0
Available for sale securities, 12 months or longer, unrealized losses	$ (2)	$ 0
Available for sale securities, total, number of investment positions	8	2
Available for sale securities, total, fair value	$ 3,528	$ 692
Available for sale securities, total, unrealized losses	$ (29)	$ (1)
Debt Security, Corporate, US [Member]
Available for sale securities, less than 12 months, number of investment positions	56	0
Available for sale securities, less than 12 months, fair value	$ 691,555	$ 0
Available for sale securities, less than 12 months, unrealized losses	$ (9,630)	$ 0
Available for sale securities, 12 months or longer, number of investment positions	0	1
Available for sale securities, 12 months or longer, fair value	$ 0	$ 14,963
Available for sale securities, 12 months or longer, unrealized losses	$ 0	$ (42)
Available for sale securities, total, number of investment positions	56	1
Available for sale securities, total, fair value	$ 691,555	$ 14,963
Available for sale securities, total, unrealized losses	$ (9,630)	$ (42)
Collateralized Loan Obligations [Member]
Available for sale securities, less than 12 months, number of investment positions	19
Available for sale securities, less than 12 months, fair value	$ 208,199
Available for sale securities, less than 12 months, unrealized losses	$ (521)
Available for sale securities, 12 months or longer, number of investment positions	8
Available for sale securities, 12 months or longer, fair value	$ 51,523
Available for sale securities, 12 months or longer, unrealized losses	$ (198)
Available for sale securities, total, number of investment positions	27
Available for sale securities, total, fair value	$ 259,722
Available for sale securities, total, unrealized losses	$ (719)
Collateralized Debt Obligations [Member]
Available for sale securities, less than 12 months, number of investment positions		36
Available for sale securities, less than 12 months, fair value		$ 268,584
Available for sale securities, less than 12 months, unrealized losses		$ (1,098)
Available for sale securities, 12 months or longer, number of investment positions		0
Available for sale securities, 12 months or longer, fair value		$ 0
Available for sale securities, 12 months or longer, unrealized losses		$ 0
Available for sale securities, total, number of investment positions		36
Available for sale securities, total, fair value		$ 268,584
Available for sale securities, total, unrealized losses		$ (1,098)

Note 2 - Investment Securitie_6

Note 2 - Investment Securities - Allowance for Credit Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Balance	$ 9	$ 0
Reversal of provision	(2)	(7)
Chargeoffs	0	0
Recoveries	0	0
Balance	7	9
Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance	0	16
Balance		0
Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Balance	$ 9	16
Balance		$ 9

Note 2 - Investment Securitie_7

Note 2 - Investment Securities - Credit Quality (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Held to maturity	$ 306,403	$ 515,598
AAA/AA/A [Member]
Held to maturity	155,594
BBB [Member]
Held to maturity	561
BB/B/NR [Member]
Held to maturity	150,248
Agency Residential MBS [Member]
Held to maturity	147,632	240,332
Agency Residential MBS [Member] | AAA/AA/A [Member]
Held to maturity	177
Agency Residential MBS [Member] | BBB [Member]
Held to maturity	0
Agency Residential MBS [Member] | BB/B/NR [Member]
Held to maturity	147,455
Non-agency Residential MBS [Member]
Held to maturity	758	1,344
Non-agency Residential MBS [Member] | AAA/AA/A [Member]
Held to maturity	149
Non-agency Residential MBS [Member] | BBB [Member]
Held to maturity	561
Non-agency Residential MBS [Member] | BB/B/NR [Member]
Held to maturity	48
US States and Political Subdivisions Debt Securities [Member]
Held to maturity	158,013	$ 273,922
US States and Political Subdivisions Debt Securities [Member] | AAA/AA/A [Member]
Held to maturity	155,268
US States and Political Subdivisions Debt Securities [Member] | BBB [Member]
Held to maturity	0
US States and Political Subdivisions Debt Securities [Member] | BB/B/NR [Member]
Held to maturity	$ 2,745

Note 2 - Investment Securitie_8

Note 2 - Investment Securities - Interest Income From Investment Securities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Taxable	$ 106,329	$ 93,163	$ 77,800
Tax-exempt from regular federal income tax	8,424	12,151	15,736
Total interest income from investment securities	$ 114,753	$ 105,314	$ 93,536

Note 3 - Loans and Allowance _3

Note 3 - Loans and Allowance for Credit Losses (Details Textual) $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Financing Receivable, Allowance for Credit Loss, Ending Balance	$ 23,514	$ 23,854	$ 19,484	$ 21,351
Loans and Leases Receivable, Nonaccrual, Commitment to Lend	$ 0	$ 0
Troubled Debt Restructurings During Period	0	0
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down	$ 0	$ 0
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts	0	0
Financing Receivable, Troubled Debt Restructuring	$ 1,965	$ 6,221
Financing Receivable, Held-for-Sale	0	0
Other Real Estate, Ending Balance	0	0
Mortgage Loans in Process of Foreclosure, Amount	247	346
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss, Ending Balance	6,529	5,660	4,064	3,884
Financing Receivable, Troubled Debt Restructuring	$ 1,793	6,040
Allowance for Credit Losses, Collateral-dependent Loans		$ 0
Number of Collateral-dependent Loans	5	5
Collateral-dependent Loans, Balance	$ 8,400	$ 11,100
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss, Ending Balance	9,972	8,936	6,445	5,645
Collateral-dependent Loans, Balance	394	446
Commercial Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss, Ending Balance	$ 6,966	9,205	4,959	6,311
Number of Collateral-dependent Loans	1
Collateral-dependent Loans, Balance	$ 57
Residential Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss, Ending Balance	45	47	$ 206	$ 869
Financing Receivable, Troubled Debt Restructuring	$ 172	$ 181
Number of Collateral-dependent Loans	3	2
Collateral-dependent Loans, Balance	$ 420	$ 346
Other Consumer Loan [Member]
Financing Receivable, Principal and Interest Deferred Payments	84	2,500
Commercial Real Estate [Member]
Financing Receivable, Principal and Interest Deferred Payments		7,800
Commercial Loan [Member]
Financing Receivable, Principal and Interest Deferred Payments		33
Restructured Loans [Member]
Financing Receivable, Troubled Debt Restructuring	1,965	6,221
Impaired Loans, Restructured, Nonaccrual Status	0	3,420
Nonperforming Financial Instruments [Member]
Financing Receivable, Allowance for Credit Loss, Ending Balance	$ 0	$ 0

Note 3 - Loans and Allowance _4

Note 3 - Loans and Allowance for Credit Losses - Loans Receivable at Carrying Amount (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Loans	$ 1,068,126	$ 1,256,243
Commercial Portfolio Segment [Member]
Loans	233,090	394,806
Commercial Portfolio Segment [Member] | Paycheck Protection Program Loans [Member]
Loans	45,888	186,945
Commercial Portfolio Segment [Member] | Other Commercial Portfolio Segment [Member]
Loans	187,202	207,861
Commercial Real Estate Portfolio Segment [Member]
Loans	535,261	564,300
Construction Portfolio Segment [Member]
Loans	48	129
Residential Portfolio Segment [Member]
Loans	18,133	23,471
Consumer Portfolio Segment [Member]
Loans	$ 281,594	$ 273,537

Note 3 - Loans and Allowance _5

Note 3 - Loans and Allowance for Credit Losses - Allowance for Loan Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Balance at beginning of period	$ 23,854	$ 19,484	$ 21,351
(Reversal) provision	2	4,307	0
Chargeoffs	(3,248)	(4,199)	(4,570)
Recoveries	2,906	2,245	2,703
Total allowance for credit losses	23,514	23,854	19,484
Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance at beginning of period		2,017
Total allowance for credit losses			2,017
Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Balance at beginning of period		21,501
Total allowance for credit losses			21,501
Unallocated Financing Receivable [Member]
Balance at beginning of period	0	3,701	3,177
(Reversal) provision		0	524
Chargeoffs		0	0
Recoveries		0	0
Total allowance for credit losses		0	3,701
Commercial Portfolio Segment [Member]
Balance at beginning of period	9,205	4,959	6,311
(Reversal) provision	(2,411)	746	(2,023)
Chargeoffs	(56)	(236)	(97)
Recoveries	228	351	768
Total allowance for credit losses	6,966	9,205	4,959
Commercial Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance at beginning of period		3,385
Total allowance for credit losses			3,385
Commercial Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Balance at beginning of period		8,344
Total allowance for credit losses			8,344
Commercial Real Estate Portfolio Segment [Member]
Balance at beginning of period	5,660	4,064	3,884
(Reversal) provision	126	929	(16)
Chargeoffs	0	0	0
Recoveries	743	49	196
Total allowance for credit losses	6,529	5,660	4,064
Commercial Real Estate Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance at beginning of period		618
Total allowance for credit losses			618
Commercial Real Estate Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Balance at beginning of period		4,682
Total allowance for credit losses			4,682
Construction Portfolio Segment [Member]
Balance at beginning of period	6	109	1,465
(Reversal) provision	(4)	(72)	(1,356)
Chargeoffs	0	0	0
Recoveries	0	0	0
Total allowance for credit losses	2	6	109
Construction Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance at beginning of period		(31)
Total allowance for credit losses			(31)
Construction Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Balance at beginning of period		78
Total allowance for credit losses			78
Residential Portfolio Segment [Member]
Balance at beginning of period	47	206	869
(Reversal) provision	(2)	(27)	(663)
Chargeoffs	0	0	0
Recoveries	0	0	0
Total allowance for credit losses	45	47	206
Residential Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance at beginning of period		(132)
Total allowance for credit losses			(132)
Residential Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Balance at beginning of period		74
Total allowance for credit losses			74
Consumer Portfolio Segment [Member]
Balance at beginning of period	8,936	6,445	5,645
(Reversal) provision	2,293	2,731	3,534
Chargeoffs	(3,192)	(3,963)	(4,473)
Recoveries	1,935	1,845	1,739
Total allowance for credit losses	$ 9,972	8,936	6,445
Consumer Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance at beginning of period		1,878
Total allowance for credit losses			1,878
Consumer Portfolio Segment [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Balance at beginning of period		8,323
Total allowance for credit losses			8,323
Unallocated Financing Receivable [Member]
Balance at beginning of period		3,701
Total allowance for credit losses			3,701
Unallocated Financing Receivable [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance at beginning of period		(3,701)
Total allowance for credit losses			(3,701)
Unallocated Financing Receivable [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Balance at beginning of period		$ 0
Total allowance for credit losses			$ 0

Note 3 - Loans and Allowance _6

Note 3 - Loans and Allowance for Credit Losses - Credit Risk Profile by Internally Assigned Grade (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Loans	$ 1,068,126	$ 1,256,243
Pass [Member]
Loans	1,049,854	1,224,701
Substandard [Member]
Loans	16,807	30,428
Doubtful [Member]
Loans	931	543
Unlikely to be Collected Financing Receivable [Member]
Loans	534	571
Commercial Portfolio Segment [Member]
Loans	233,090	394,806
Commercial Portfolio Segment [Member] | Pass [Member]
Loans	232,710	386,144
Commercial Portfolio Segment [Member] | Substandard [Member]
Loans	380	8,662
Commercial Portfolio Segment [Member] | Doubtful [Member]
Loans	0	0
Commercial Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member]
Loans	535,261	564,300
Commercial Real Estate Portfolio Segment [Member] | Pass [Member]
Loans	521,300	545,398
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member]
Loans	13,961	18,902
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member]
Loans	0	0
Construction Portfolio Segment [Member]
Loans	48	129
Construction Portfolio Segment [Member] | Pass [Member]
Loans	48	129
Construction Portfolio Segment [Member] | Substandard [Member]
Loans	0	0
Construction Portfolio Segment [Member] | Doubtful [Member]
Loans	0	0
Construction Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member]
Loans	0	0
Residential Portfolio Segment [Member]
Loans	18,133	23,471
Residential Portfolio Segment [Member] | Pass [Member]
Loans	16,874	22,105
Residential Portfolio Segment [Member] | Substandard [Member]
Loans	1,259	1,366
Residential Portfolio Segment [Member] | Doubtful [Member]
Loans	0	0
Residential Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member]
Loans	0	0
Consumer Portfolio Segment [Member]
Loans	281,594	273,537
Consumer Portfolio Segment [Member] | Pass [Member]
Loans	278,922	270,925
Consumer Portfolio Segment [Member] | Substandard [Member]
Loans	1,207	1,498
Consumer Portfolio Segment [Member] | Doubtful [Member]
Loans	931	543
Consumer Portfolio Segment [Member] | Unlikely to be Collected Financing Receivable [Member]
Loans	$ 534	$ 571

Note 3 - Loans and Allowance _7

Note 3 - Loans and Allowance for Credit Losses - Loans by Delinquency and Nonaccrual Status (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Total loans	$ 1,068,126	$ 1,256,243
Nonaccrual	692	4,329
Financial Asset, Not Past Due [Member]
Total loans	1,061,888	1,247,222
Financial Asset, 30 to 59 Days Past Due [Member]
Total loans	3,931	3,493
Financial Asset, 60 to 89 Days Past Due [Member]
Total loans	1,276	749
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Total loans	339	450
Commercial Portfolio Segment [Member]
Total loans	233,090	394,806
Nonaccrual	0	83
Commercial Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Total loans	232,444	394,004
Commercial Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Total loans	383	713
Commercial Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Total loans	263	6
Commercial Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Total loans	0	0
Commercial Real Estate Portfolio Segment [Member]
Total loans	535,261	564,300
Nonaccrual	290	3,720
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Total loans	534,748	560,580
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Total loans	223	0
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Total loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Total loans	0	0
Construction Portfolio Segment [Member]
Total loans	48	129
Nonaccrual	0	0
Construction Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Total loans	48	129
Construction Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Total loans	0	0
Construction Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Total loans	0	0
Construction Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Total loans	0	0
Residential Portfolio Segment [Member]
Total loans	18,133	23,471
Nonaccrual	137	161
Residential Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Total loans	17,855	22,269
Residential Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Total loans	141	770
Residential Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Total loans	0	271
Residential Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Total loans	0	0
Consumer Portfolio Segment [Member]
Total loans	281,594	273,537
Nonaccrual	265	365
Consumer Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Total loans	276,793	270,240
Consumer Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Total loans	3,184	2,010
Consumer Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Total loans	1,013	472
Consumer Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Total loans	$ 339	$ 450

Note 3 - Loans and Allowance _8

Note 3 - Loans and Allowance for Credit Losses - Impaired Loans, Supplemental Schedule (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Average Recorded Investment	$ 16,075
Recognized Interest Income	283
Commercial Portfolio Segment [Member]
Average Recorded Investment	8,412
Recognized Interest Income	140
Commercial Real Estate Portfolio Segment [Member]
Average Recorded Investment	7,428
Recognized Interest Income	139
Residential Portfolio Segment [Member]
Average Recorded Investment	191
Recognized Interest Income	3
Consumer Portfolio Segment [Member]
Average Recorded Investment	44
Recognized Interest Income	$ 1

Note 3 - Loans and Allowance _9

Note 3 - Loans and Allowance for Credit Losses - Troubled Debt Restructurings (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)
Number of Contracts	3	7
Pre-Modification Carrying Value	$ 3,026	$ 8,608
Period-End Carrying Value	1,965	6,221
Period-End Individual Impairment Allowance	$ 0	$ 0
Commercial Real Estate Portfolio Segment [Member]
Number of Contracts	2	6
Pre-Modification Carrying Value	$ 2,785	$ 8,367
Period-End Carrying Value	1,793	6,040
Period-End Individual Impairment Allowance	$ 0	$ 0
Residential Portfolio Segment [Member]
Number of Contracts	1	1
Pre-Modification Carrying Value	$ 241	$ 241
Period-End Carrying Value	172	181
Period-End Individual Impairment Allowance	$ 0	$ 0

Note 3 - Loans and Allowance_10

Note 3 - Loans and Allowance for Credit Losses - Risk Category of Loans by Class (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Loans	$ 1,068,126	$ 1,256,243
Nonaccrual	692	4,329
Financial Asset, Not Past Due [Member]
Loans	1,061,888	1,247,222
Financial Asset, 30 to 59 Days Past Due [Member]
Loans	3,931	3,493
Financial Asset, 60 to 89 Days Past Due [Member]
Loans	1,276	749
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	339	450
Commercial Portfolio Segment [Member]
Originated prior	34,816
Originated 2017	3,999
Originated 2018	8,690
Originated 2019	16,919
Originated 2020	30,694
Originated 2021	98,856
Total Term Loans	193,974
Revolving Loans Amortized Cost Basis	39,116
Loans	233,090	394,806
Nonaccrual	0	83
Commercial Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Loans	232,444	394,004
Commercial Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	383	713
Commercial Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	263	6
Commercial Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member]
Originated prior	127,174
Originated 2017	87,921
Originated 2018	78,200
Originated 2019	80,663
Originated 2020	84,465
Originated 2021	76,838
Total Term Loans	535,261
Revolving Loans Amortized Cost Basis	0
Loans	535,261	564,300
Nonaccrual	290	3,720
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Loans	534,748	560,580
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	223	0
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	0	0
Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	0	0
Construction Portfolio Segment [Member]
Originated prior	0
Originated 2017	0
Originated 2018	0
Originated 2019	0
Originated 2020	0
Originated 2021	0
Total Term Loans	0
Revolving Loans Amortized Cost Basis	48
Loans	48	129
Nonaccrual	0	0
Construction Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Loans	48	129
Construction Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	0	0
Construction Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	0	0
Construction Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	0	0
Residential Portfolio Segment [Member]
Originated prior	18,133
Originated 2017	0
Originated 2018	0
Originated 2019	0
Originated 2020	0
Originated 2021	0
Total Term Loans	18,133
Revolving Loans Amortized Cost Basis	0
Loans	18,133	23,471
Nonaccrual	137	161
Residential Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Loans	17,855	22,269
Residential Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	141	770
Residential Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	0	271
Residential Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	0	0
Consumer Portfolio Segment [Member]
Loans	281,594	273,537
Nonaccrual	265	365
Consumer Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Loans	276,793	270,240
Consumer Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	3,184	2,010
Consumer Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	1,013	472
Consumer Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	339	450
Consumer Portfolio Segment [Member] | Term Loan Originated Prior [Member]
Loans	8,087
Nonaccrual	0
Consumer Portfolio Segment [Member] | Term Loan Originated Prior [Member] | Financial Asset, Not Past Due [Member]
Loans	7,884
Consumer Portfolio Segment [Member] | Term Loan Originated Prior [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	197
Consumer Portfolio Segment [Member] | Term Loan Originated Prior [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	5
Consumer Portfolio Segment [Member] | Term Loan Originated Prior [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	1
Consumer Portfolio Segment [Member] | Term Loans Originated in 2017 [Member]
Loans	10,338
Nonaccrual	0
Consumer Portfolio Segment [Member] | Term Loans Originated in 2017 [Member] | Financial Asset, Not Past Due [Member]
Loans	10,162
Consumer Portfolio Segment [Member] | Term Loans Originated in 2017 [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	139
Consumer Portfolio Segment [Member] | Term Loans Originated in 2017 [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	20
Consumer Portfolio Segment [Member] | Term Loans Originated in 2017 [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	17
Consumer Portfolio Segment [Member] | Term Loans Originated in 2018 [Member]
Loans	26,803
Nonaccrual	0
Consumer Portfolio Segment [Member] | Term Loans Originated in 2018 [Member] | Financial Asset, Not Past Due [Member]
Loans	25,932
Consumer Portfolio Segment [Member] | Term Loans Originated in 2018 [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	634
Consumer Portfolio Segment [Member] | Term Loans Originated in 2018 [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	156
Consumer Portfolio Segment [Member] | Term Loans Originated in 2018 [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	81
Consumer Portfolio Segment [Member] | Term Loans Originated in 2019 [Member]
Loans	38,715
Nonaccrual	0
Consumer Portfolio Segment [Member] | Term Loans Originated in 2019 [Member] | Financial Asset, Not Past Due [Member]
Loans	37,999
Consumer Portfolio Segment [Member] | Term Loans Originated in 2019 [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	504
Consumer Portfolio Segment [Member] | Term Loans Originated in 2019 [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	150
Consumer Portfolio Segment [Member] | Term Loans Originated in 2019 [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	62
Consumer Portfolio Segment [Member] | Term Loans Originated in 2020 [Member]
Loans	59,135
Nonaccrual	0
Consumer Portfolio Segment [Member] | Term Loans Originated in 2020 [Member] | Financial Asset, Not Past Due [Member]
Loans	58,178
Consumer Portfolio Segment [Member] | Term Loans Originated in 2020 [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	662
Consumer Portfolio Segment [Member] | Term Loans Originated in 2020 [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	186
Consumer Portfolio Segment [Member] | Term Loans Originated in 2020 [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	109
Consumer Portfolio Segment [Member] | Term Loans Originated in 2021 [Member]
Loans	115,381
Nonaccrual	0
Consumer Portfolio Segment [Member] | Term Loans Originated in 2021 [Member] | Financial Asset, Not Past Due [Member]
Loans	113,899
Consumer Portfolio Segment [Member] | Term Loans Originated in 2021 [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	1,034
Consumer Portfolio Segment [Member] | Term Loans Originated in 2021 [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	408
Consumer Portfolio Segment [Member] | Term Loans Originated in 2021 [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	40
Consumer Portfolio Segment [Member] | Total Term Loans [Member]
Loans	258,459
Nonaccrual	0
Consumer Portfolio Segment [Member] | Total Term Loans [Member] | Financial Asset, Not Past Due [Member]
Loans	254,054
Consumer Portfolio Segment [Member] | Total Term Loans [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	3,170
Consumer Portfolio Segment [Member] | Total Term Loans [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	925
Consumer Portfolio Segment [Member] | Total Term Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	310
Consumer Portfolio Segment [Member] | Revolving Loans Amortized Cost Basis [Member]
Loans	23,135
Nonaccrual	265
Consumer Portfolio Segment [Member] | Revolving Loans Amortized Cost Basis [Member] | Financial Asset, Not Past Due [Member]
Loans	22,739
Consumer Portfolio Segment [Member] | Revolving Loans Amortized Cost Basis [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loans	14
Consumer Portfolio Segment [Member] | Revolving Loans Amortized Cost Basis [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loans	88
Consumer Portfolio Segment [Member] | Revolving Loans Amortized Cost Basis [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	29
Pass [Member]
Loans	1,049,854	1,224,701
Pass [Member] | Commercial Portfolio Segment [Member]
Originated prior	34,784
Originated 2017	3,999
Originated 2018	8,690
Originated 2019	16,919
Originated 2020	30,694
Originated 2021	98,799
Total Term Loans	193,885
Revolving Loans Amortized Cost Basis	38,825
Loans	232,710	386,144
Pass [Member] | Commercial Real Estate Portfolio Segment [Member]
Originated prior	116,181
Originated 2017	87,921
Originated 2018	78,200
Originated 2019	78,647
Originated 2020	83,642
Originated 2021	76,709
Total Term Loans	521,300
Revolving Loans Amortized Cost Basis	0
Loans	521,300	545,398
Pass [Member] | Construction Portfolio Segment [Member]
Originated prior	0
Originated 2017	0
Originated 2018	0
Originated 2019	0
Originated 2020	0
Originated 2021	0
Total Term Loans	0
Revolving Loans Amortized Cost Basis	48
Loans	48	129
Pass [Member] | Residential Portfolio Segment [Member]
Originated prior	16,874
Originated 2017	0
Originated 2018	0
Originated 2019	0
Originated 2020	0
Originated 2021	0
Total Term Loans	16,874
Revolving Loans Amortized Cost Basis	0
Loans	16,874	22,105
Pass [Member] | Consumer Portfolio Segment [Member]
Loans	278,922	270,925
Substandard [Member]
Loans	16,807	30,428
Substandard [Member] | Commercial Portfolio Segment [Member]
Originated prior	32
Originated 2017	0
Originated 2018	0
Originated 2019	0
Originated 2020	0
Originated 2021	57
Total Term Loans	89
Revolving Loans Amortized Cost Basis	291
Loans	380	8,662
Substandard [Member] | Commercial Real Estate Portfolio Segment [Member]
Originated prior	10,993
Originated 2017	0
Originated 2018	0
Originated 2019	2,016
Originated 2020	823
Originated 2021	129
Total Term Loans	13,961
Revolving Loans Amortized Cost Basis	0
Loans	13,961	18,902
Substandard [Member] | Construction Portfolio Segment [Member]
Originated prior	0
Originated 2017	0
Originated 2018	0
Originated 2019	0
Originated 2020	0
Originated 2021	0
Total Term Loans	0
Revolving Loans Amortized Cost Basis	0
Loans	0	0
Substandard [Member] | Residential Portfolio Segment [Member]
Originated prior	1,259
Originated 2017	0
Originated 2018	0
Originated 2019	0
Originated 2020	0
Originated 2021	0
Total Term Loans	1,259
Revolving Loans Amortized Cost Basis	0
Loans	1,259	1,366
Substandard [Member] | Consumer Portfolio Segment [Member]
Loans	1,207	1,498
Doubtful [Member]
Loans	931	543
Doubtful [Member] | Commercial Portfolio Segment [Member]
Originated prior	0
Originated 2017	0
Originated 2018	0
Originated 2019	0
Originated 2020	0
Originated 2021	0
Total Term Loans	0
Revolving Loans Amortized Cost Basis	0
Loans	0	0
Doubtful [Member] | Commercial Real Estate Portfolio Segment [Member]
Originated prior	0
Originated 2017	0
Originated 2018	0
Originated 2019	0
Originated 2020	0
Originated 2021	0
Total Term Loans	0
Revolving Loans Amortized Cost Basis	0
Loans	0	0
Doubtful [Member] | Construction Portfolio Segment [Member]
Originated prior	0
Originated 2017	0
Originated 2018	0
Originated 2019	0
Originated 2020	0
Originated 2021	0
Total Term Loans	0
Revolving Loans Amortized Cost Basis	0
Loans	0	0
Doubtful [Member] | Residential Portfolio Segment [Member]
Originated prior	0
Originated 2017	0
Originated 2018	0
Originated 2019	0
Originated 2020	0
Originated 2021	0
Total Term Loans	0
Revolving Loans Amortized Cost Basis	0
Loans	0	0
Doubtful [Member] | Consumer Portfolio Segment [Member]
Loans	931	543
Unlikely to be Collected Financing Receivable [Member]
Loans	534	571
Unlikely to be Collected Financing Receivable [Member] | Commercial Portfolio Segment [Member]
Originated prior	0
Originated 2017	0
Originated 2018	0
Originated 2019	0
Originated 2020	0
Originated 2021	0
Total Term Loans	0
Revolving Loans Amortized Cost Basis	0
Loans	0	0
Unlikely to be Collected Financing Receivable [Member] | Commercial Real Estate Portfolio Segment [Member]
Originated prior	0
Originated 2017	0
Originated 2018	0
Originated 2019	0
Originated 2020	0
Originated 2021	0
Total Term Loans	0
Revolving Loans Amortized Cost Basis	0
Loans	0	0
Unlikely to be Collected Financing Receivable [Member] | Construction Portfolio Segment [Member]
Originated prior	0
Originated 2017	0
Originated 2018	0
Originated 2019	0
Originated 2020	0
Originated 2021	0
Total Term Loans	0
Revolving Loans Amortized Cost Basis	0
Loans	0	0
Unlikely to be Collected Financing Receivable [Member] | Residential Portfolio Segment [Member]
Originated prior	0
Originated 2017	0
Originated 2018	0
Originated 2019	0
Originated 2020	0
Originated 2021	0
Total Term Loans	0
Revolving Loans Amortized Cost Basis	0
Loans	0	0
Unlikely to be Collected Financing Receivable [Member] | Consumer Portfolio Segment [Member]
Loans	$ 534	$ 571

Note 4 - Concentration of Cre_2

Note 4 - Concentration of Credit Risk (Details Textual) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Unsecured Loan Limit, Percentage of Shareholders' Equity, California Financial Code	15.00%
Secured and Unsecured Loan Limit Percentage, California Financial Code	25.00%
Loan Commitments Related to Real Estate Loans	$ 34,226	$ 37,456
Corporate Debt Securities [Member]
Concentration Risk, Issuer Relationships	112
Concentration Risk, Aggregate Securities Amount	$ 5,000
Commercial Real Estate Loans [Member]
Loan To Value Ratio Requirement	75.00%
Residential Real Estate Loans [Member]
Loan To Value Ratio Requirement	80.00%
Aggregate Loans [Member] | Customer Concentration Risk [Member]
Concentration Risk, Issuer Relationships	33
Aggregate Loans [Member] | Customer Concentration Risk [Member] | Minimum [Member]
Concentration Risk, Aggregate Loans Amount	$ 5,000

Note 5 - Premises, Equipment,_3

Note 5 - Premises, Equipment, Other Assets and Other Liabilities (Details Textual) $ / shares in Units, shares in Thousands, $ in Thousands	Dec. 29, 2021	Dec. 28, 2021	Dec. 31, 2021USD ($)$ / sharesshares	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Depreciation, Depletion and Amortization, Nonproduction, Total			$ 2,978	$ 3,683	$ 3,879
FRB Membership, Stock Subscription, Percent of Paid-Up Capital Stock and Surplus Requirement			6.00%
Share Price (in dollars per share) | $ / shares			$ 57.73
LIHTC Investments			$ 37,145	18,335
Qualified Affordable Housing Project Investments, Commitment			$ 26,485	12,202
Lessee, Operating Lease, Term of Contract (Year)			5 years
Lessee, Operating Lease, Renewal Term (Year)			5 years
Operating Lease, Weighted Average Remaining Lease Term (Year)			4 years 2 months 12 days
Operating Lease, Weighted Average Discount Rate, Percent			1.67%
Operating Lease, Right-of-Use Asset			$ 17,980
Occupancy and Equipment Expense [Member]
Operating Lease, Cost			6,581	6,699
Other Liabilities [Member]
Operating Lease, Liability, Total			17,980	$ 18,832
Contingent Commitment, Year 1 [Member]
Qualified Affordable Housing Project Investments, Commitment			6,830
Contingent Commitment, Year 2 [Member]
Qualified Affordable Housing Project Investments, Commitment			11,826
Contingent Commitment, Year 3 [Member]
Qualified Affordable Housing Project Investments, Commitment			6,769
Contingent Commitment, Year 4 [Member]
Qualified Affordable Housing Project Investments, Commitment			241
Contingent Commitment, Year 5 [Member]
Qualified Affordable Housing Project Investments, Commitment			125
Contingent Commitment, Year 6 [Member]
Qualified Affordable Housing Project Investments, Commitment			203
Contingent Commitment, Year 7 or Thereafter [Member]
Qualified Affordable Housing Project Investments, Commitment			$ 491
VISA Class B Common Stock [Member]
Investment Owned, Balance, Shares (in shares) | shares			211
Conversion Rate of Class B Common Stock into Class A Common Stock	1.6181	1.6228
Share Price (in dollars per share) | $ / shares			$ 216.71
VISA Class B Common Stock [Member] | Reported Value Measurement [Member]
Investment Owned, at Fair Value			$ 0

Note 5 - Premises, Equipment,_4

Note 5 - Premises, Equipment, Other Assets and Other Liabilities - Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Cost	$ 88,671	$ 87,584
Accumulated Depreciation and Amortization	(57,516)	(54,771)
Net Book Value	31,155	32,813
Land [Member]
Cost	11,453	11,453
Accumulated Depreciation and Amortization	0	0
Net Book Value	11,453	11,453
Building and Building Improvements [Member]
Cost	43,009	42,960
Accumulated Depreciation and Amortization	(30,069)	(28,922)
Net Book Value	12,940	14,038
Leasehold Improvements [Member]
Cost	7,567	6,944
Accumulated Depreciation and Amortization	(5,967)	(5,528)
Net Book Value	1,600	1,416
Furniture and Fixtures [Member]
Cost	26,642	26,227
Accumulated Depreciation and Amortization	(21,480)	(20,321)
Net Book Value	$ 5,162	$ 5,906

Note 5 - Premises, Equipment,_5

Note 5 - Premises, Equipment, Other Assets and Other Liabilities - Other Assets (Details) - USD ($) $ in Thousands		Dec. 31, 2021	Dec. 31, 2020
Cost method equity investments:
Federal Reserve Bank stock (1)	[1]	$ 14,069	$ 14,069
Other investments		158	158
Total cost method equity investments		14,227	14,227
Life insurance cash surrender value		63,107	60,444
Right-of-use asset		17,980
Limited partnership investments		37,145	18,335
Interest receivable		35,521	33,022
Prepaid assets		4,757	4,572
Other assets		12,678	10,471
Total other assets		185,415	159,903
Other Assets [Member]
Cost method equity investments:
Right-of-use asset		$ 17,980	$ 18,832
[1]	A bank applying for membership in the Federal Reserve System is required to subscribe to stock in the Federal Reserve Bank (FRB) in its district in a sum equal to six percent of the bank’s paid-up capital stock and surplus. One-half of the amount of the bank's subscription shall be paid to the FRB and the remaining half will be subject to call when deemed necessary by the Board of Governors of the Federal Reserve System.

Note 5 - Premises, Equipment,_6

Note 5 - Premises, Equipment, Other Assets and Other Liabilities - Amounts Recognized in Net Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Investment loss included in pre-tax income	$ 2,620	$ 2,440	$ 2,400
Tax credits recognized in provision for income taxes	$ 2,300	$ 900	$ 875

Note 5 - Premises, Equipment,_7

Note 5 - Premises, Equipment, Other Assets and Other Liabilities - Summary of Other Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Net deferred tax liability	$ 2,501	$ 25,778
Securities purchases pending settlement	0	29,000
Other liabilities	53,241	38,988
Total other liabilities	73,722	112,598
Other Liabilities [Member]
Operating lease liability	$ 17,980	$ 18,832

Note 5 - Premises, Equipment,_8

Note 5 - Premises, Equipment, Other Assets and Other Liabilities - Summarizes of Operating Lease Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
2022, operating lease	$ 5,698
2023, operating lease	4,984
2024, operating lease	3,393
2025, operating lease	2,201
2026, operating lease	786
Thereafter, operating lease	1,478
Total minimum lease payments, operating lease	18,540
Less: discount, operating lease	(560)
Other Liabilities [Member]
Operating lease liability	$ 17,980	$ 18,832

Note 6 - Goodwill and Identif_3

Note 6 - Goodwill and Identifiable Intangible Assets (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Goodwill and Intangible Asset Impairment, Total	$ 0	$ 0
Amortization Expense, Adjustment Resulting from a Change in Estimates of Useful Lives or Residual Values	$ 0	$ 0

Note 6 - Goodwill and Identif_4

Note 6 - Goodwill and Identifiable Intangible Assets - Carrying Values of Goodwill (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Goodwill	$ 121,673	$ 121,673

Note 6 - Goodwill and Identif_5

Note 6 - Goodwill and Identifiable Intangible Assets - Gross Carrying Amount of Intangible Assets and Accumulated Amortization (Details) - Core Deposits [Member] - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Gross Carrying Amount	$ 56,808	$ 56,808
Accumulated Amortization	$ (55,973)	$ (55,704)

Note 6 - Goodwill and Identif_6

Note 6 - Goodwill and Identifiable Intangible Assets - Estimated Future Amortization Expense for Identifiable Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
For the year ended Decptember 31, 2021 (actual)	$ 269	$ 287	$ 538
Core Deposits [Member]
For the year ended Decptember 31, 2021 (actual)	269
Estimate for year ending December 31, 2022	252
2023	236
2024	222
2025	$ 125

Note 7 - Deposits and Borrowe_3

Note 7 - Deposits and Borrowed Funds (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Demand Deposit Overdrafts	$ 611	$ 682
Interest Expense, Time Deposits, $100,000 or More	$ 265	$ 319	$ 326

Note 7 - Deposits and Borrowe_4

Note 7 - Deposits and Borrowed Funds - Deposits Detail (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Noninterest-bearing	$ 3,069,080	$ 2,725,177
Transaction	1,260,869	1,102,601
Savings	1,940,395	1,703,812
Time deposits less than $100 thousand	72,527	79,825
Time deposits $100 thousand through $250 thousand	47,666	49,323
Time deposits more than $250 thousand	23,419	27,241
Total deposits	$ 6,413,956	$ 5,687,979

Note 7 - Deposits and Borrowe_5

Note 7 - Deposits and Borrowed Funds - Short-term Borrowed Funds (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Collateral Carrying Value	$ 296,300	$ 255,214
Short-term borrowed funds	146,246	102,545
Agency Residential MBS [Member]
Collateral Carrying Value	42,295	67,019
Corporate Debt Securities [Member]
Collateral Carrying Value	$ 254,005	$ 188,195

Note 7 - Deposits and Borrowe_6

Note 7 - Deposits and Borrowed Funds - Borrowed Funds, Highest Month End Balances (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Securities Sold under Agreements to Repurchase [Member]
Securities sold under repurchase agreements	$ 146,552	$ 110,846

Note 8 - Shareholders' Equity_2

Note 8 - Shareholders' Equity (Details Textual) $ / shares in Units, $ in Thousands	Jan. 29, 2019shares	Dec. 31, 2021USD ($)$ / sharesshares	Dec. 31, 2020USD ($)$ / sharesshares	Dec. 31, 2019USD ($)$ / sharesshares	Feb. 13, 2009$ / sharesshares
Share Price (in dollars per share) | $ / shares		$ 57.73
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)		193,000	184,000	250,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) | $ / shares		$ 7.50	$ 8.64	$ 10.19
Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount | $		$ 2,494
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value | $		454	$ 693	$ 3,398
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value | $		$ 1,783	$ 1,735	$ 1,980
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period (in shares)		53,000	52,000	516,000
Excess Tax Deduction Exceeding Related Share-based Compensation, Operating Activities | $			$ 295	$ 1,485
Income Tax Expense (Benefit), Total | $		$ 30,518	$ 26,390	24,827
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)		13,000	10,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)					246,640
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares					$ 50.92
Stock Issued During Period, Shares, Warrants Exercised (in shares)	50,788
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased (in shares)		1,750,000
Additional Classes of Stock Authorized		2
Additional Classes of Stock Authorized, Shares Authorized, Per Class (in shares)		1,000,000
Common Stock, Shares Authorized (in shares)		150,000,000	150,000,000
Common Stock, Shares, Outstanding, Ending Balance (in shares)		26,866,000	26,807,000
Common Class B [Member]
Common Stock, Shares, Outstanding, Ending Balance (in shares)		0
Accounting Standards Update 2016-09 [Member]
Income Tax Expense (Benefit), Total | $		$ 0	$ (87)	(435)
NQSO [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)		3 years
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)		10 years
Restricted Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)		3 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value | $		$ 527	$ 534	1,073
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms (Year)		1 year 4 months 24 days	1 year 3 months 18 days
Share-based Payment Arrangement, Expense | $		$ 610	$ 533	$ 758
Share-based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)		3 years
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)		967,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)		1 year 9 months 18 days
Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)		0	0

Note 8 - Shareholders' Equity -

Note 8 - Shareholders' Equity - Information About Stock Options Granted (Details) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)$ / sharesshares
Options outstanding, range of exercise price, lower range (in dollars per share)	$ 40
Options outstanding, range of exercise price, upper range (in dollars per share)	$ 70
Options outstanding, number outstanding (in shares) | shares	793
Options outstanding, aggregate intrinsic value | $	$ 755
Options outstanding, weighted average remaining contractual life (Year)	7 years 1 month 6 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 60
Options exercisable, number outstanding (in shares) | shares	446
Options exercisable, aggregate intrinsic value | $	$ 640
Options exercisable, weighted average remaining contractual life (Year)	6 years 1 month 6 days
$40 - 45 (in dollars per share)	$ 60
Range 1 [Member]
Options outstanding, range of exercise price, lower range (in dollars per share)	40
Options outstanding, range of exercise price, upper range (in dollars per share)	$ 45
Options outstanding, number outstanding (in shares) | shares	34
Options outstanding, aggregate intrinsic value | $	$ 527
Options outstanding, weighted average remaining contractual life (Year)	3 years 9 months 18 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 42
Options exercisable, number outstanding (in shares) | shares	34
Options exercisable, aggregate intrinsic value | $	$ 527
Options exercisable, weighted average remaining contractual life (Year)	3 years 9 months 18 days
$40 - 45 (in dollars per share)	$ 42
Range 2 [Member]
Options outstanding, range of exercise price, lower range (in dollars per share)	45
Options outstanding, range of exercise price, upper range (in dollars per share)	$ 50
Options outstanding, number outstanding (in shares) | shares	0
Options outstanding, aggregate intrinsic value | $	$ 0
Options outstanding, weighted average exercise price (in dollars per share)	$ 0
Options exercisable, number outstanding (in shares) | shares	0
Options exercisable, aggregate intrinsic value | $	$ 0
$40 - 45 (in dollars per share)	$ 0
Range 3 [Member]
Options outstanding, range of exercise price, lower range (in dollars per share)	50
Options outstanding, range of exercise price, upper range (in dollars per share)	$ 55
Options outstanding, number outstanding (in shares) | shares	15
Options outstanding, aggregate intrinsic value | $	$ 67
Options outstanding, weighted average remaining contractual life (Year)	2 years 1 month 6 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 53
Options exercisable, number outstanding (in shares) | shares	15
Options exercisable, aggregate intrinsic value | $	$ 67
Options exercisable, weighted average remaining contractual life (Year)	2 years 1 month 6 days
$40 - 45 (in dollars per share)	$ 53
Range 4 [Member]
Options outstanding, range of exercise price, lower range (in dollars per share)	55
Options outstanding, range of exercise price, upper range (in dollars per share)	$ 60
Options outstanding, number outstanding (in shares) | shares	260
Options outstanding, aggregate intrinsic value | $	$ 161
Options outstanding, weighted average remaining contractual life (Year)	7 years 9 months 18 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 57
Options exercisable, number outstanding (in shares) | shares	83
Options exercisable, aggregate intrinsic value | $	$ 46
Options exercisable, weighted average remaining contractual life (Year)	5 years 1 month 6 days
$40 - 45 (in dollars per share)	$ 57
Range 5 [Member]
Options outstanding, range of exercise price, lower range (in dollars per share)	60
Options outstanding, range of exercise price, upper range (in dollars per share)	$ 65
Options outstanding, number outstanding (in shares) | shares	316
Options outstanding, weighted average remaining contractual life (Year)	6 years 7 months 6 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 62
Options exercisable, number outstanding (in shares) | shares	258
Options exercisable, weighted average remaining contractual life (Year)	6 years 6 months
$40 - 45 (in dollars per share)	$ 62
Range 6 [Member]
Options outstanding, range of exercise price, lower range (in dollars per share)	65
Options outstanding, range of exercise price, upper range (in dollars per share)	$ 70
Options outstanding, number outstanding (in shares) | shares	168
Options outstanding, aggregate intrinsic value | $	$ 0
Options outstanding, weighted average remaining contractual life (Year)	8 years 1 month 6 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 66
Options exercisable, number outstanding (in shares) | shares	56
Options exercisable, aggregate intrinsic value | $	$ 0
Options exercisable, weighted average remaining contractual life (Year)	8 years
$40 - 45 (in dollars per share)	$ 66

Note 8 - Shareholders' Equity_3

Note 8 - Shareholders' Equity - Weighted Average Assumptions Used in the Option Pricing to Value Stock Options Granted (Details) - $ / shares		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Expected volatility (1)	[1]	20.00%	20.00%	20.00%
Expected life in years (2) (Year)	[2]	4 years 8 months 12 days	3 years 6 months	4 years 8 months 12 days
Risk-free interest rate (3)	[3]	0.46%	1.52%	2.67%
Expected dividend yield		2.79%	2.59%	2.55%
Fair value per award (in dollars per share)		$ 7.50	$ 8.64	$ 10.19
[1]	Measured using daily price changes of Company's stock over respective expected term of the option and the implied volatility derived from the market prices of the Company's stock and traded options.
[2]	The number of years that the Company estimates that the options will be outstanding prior to exercise.
[3]	The risk-free rate over the expected life based on the US Treasury yield curve in effect at the time of the grant.

Note 8 - Shareholders' Equity_4

Note 8 - Shareholders' Equity - Summary of Option Activity (Details) - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Outstanding (in shares)	693
Outstanding (in dollars per share)	$ 61.25
Granted (in shares)	193	184	250
Granted (in dollars per share)	$ 57.08
Exercised (in shares)	(53)	(52)	(516)
Exercised (in dollars per share)	$ 56.82
Forfeited or expired (in shares)	(40)
Forfeited or expired (in dollars per share)	$ 62.14
Outstanding (in shares)	793	693
Outstanding (in dollars per share)	$ 60.48	$ 61.25
Outstanding (Year)	7 years 1 month 6 days
Exercisable (in shares)	446
Exercisable (in dollars per share)	$ 60.07
Exercisable (Year)	6 years 1 month 6 days

Note 8 - Shareholders' Equity_5

Note 8 - Shareholders' Equity - Summary of Nonvested Option Activity (Details) - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Nonvested at January 1, 2021 (in shares)	373
Nonvested at January 1, 2021 (in dollars per share)	$ 9.39
Granted (in shares)	193	184	250
Granted (in dollars per share)	$ 7.50
Vested (in shares)	(185)
Vested (in dollars per share)	$ 9.61
Forfeited (in shares)	(34)
Forfeited (in dollars per share)	$ 8.42
Nonvested at December 31, 2021 (in shares)	347	373
Nonvested at December 31, 2021 (in dollars per share)	$ 8.31

Note 8 - Shareholders' Equity_6

Note 8 - Shareholders' Equity - Summary of the Status of Restricted Performance Shares (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Outstanding at January 1, (in shares)	28	27
Granted (in shares)	13	10
Issued upon vesting (in shares)	(9)	(9)
Forfeited (in shares)	(2)	0
Outstanding at December 31, (in shares)	30	28

Note 9 - Regulatory Capital (De

Note 9 - Regulatory Capital (Details Textual)	Dec. 31, 2021
Capital Conservation Buffer	2.50%

Note 9 - Regulatory Capital - C

Note 9 - Regulatory Capital - Capital Ratios for the Company and the Bank (Details) $ in Thousands		Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)
Common Equity Tier 1 Capital		$ 653,026	$ 604,833
Common Equity Tier 1 Capital, ratio		0.1493	0.1604
Common Equity Tier 1 Capital Required for Capital Adequacy		$ 306,277	$ 263,903
Common Equity Tier 1 Capital Required for Capital Adequacy, ratio		7.00%	7.00%
Tier 1 Capital		$ 653,026	$ 604,833
Tier 1 Capital, raio		0.1493	0.1604
Tier 1 Capital Required for Capital Adequacy		$ 371,908	$ 320,454
Tier 1 Capital Required for Capital Adequacy, ratio		0.0850	0.0850
Total Capital		$ 676,749	$ 628,797
Total Capital, ratio		0.1547	0.1668
Total Capital Required for Capital Adequacy		$ 459,416	$ 395,855
Total Capital Required for Capital Adequacy, ratio		0.1050	0.1050
Leverage Ratio, amount	[1]	$ 653,026	$ 604,833
Leverage Ratio	[1]	0.0906	0.0940
Leverage Ratio Required for Capital Adequacy, amount	[1]	$ 288,423	$ 257,488
Leverage Ratio Required for Capital Adequacy	[1]	0.0400	0.0400
Westamerica Bank [Member]
Common Equity Tier 1 Capital		$ 540,538	$ 484,270
Common Equity Tier 1 Capital, ratio		0.1248	0.1300
Common Equity Tier 1 Capital Required for Capital Adequacy		$ 303,111	$ 260,755
Common Equity Tier 1 Capital Required for Capital Adequacy, ratio		7.00%	7.00%
Common Equity Tier 1 Capital To Be Well-capitalized		$ 281,460	$ 242,130
Common Equity Tier 1 Capital To Be Well-capitalized, ratio		6.50%	6.50%
Tier 1 Capital		$ 540,538	$ 484,270
Tier 1 Capital, raio		0.1248	0.1300
Tier 1 Capital Required for Capital Adequacy		$ 368,063	$ 316,632
Tier 1 Capital Required for Capital Adequacy, ratio		0.0850	0.0850
Tier 1 Capital To Be Well-capitalized		$ 346,412	$ 298,006
Tier 1 Capital To Be Well-capitalized, ratio		0.0800	0.0800
Total Capital		$ 570,260	$ 514,234
Total Capital, ratio		0.1317	0.1380
Total Capital Required for Capital Adequacy		$ 454,666	$ 391,133
Total Capital Required for Capital Adequacy, ratio		0.1050	0.1050
Total Capital To Be Well-capitalized		$ 433,016	$ 372,508
Total Capital To Be Well-capitalized, ratio		0.1000	0.1000
Leverage Ratio, amount	[1]	$ 540,538	$ 484,270
Leverage Ratio	[1]	0.0755	0.0758
Leverage Ratio Required for Capital Adequacy, amount	[1]	$ 286,432	$ 255,560
Leverage Ratio Required for Capital Adequacy	[1]	0.0400	0.0400
Leverage Ratio To Be Well-capitalized, amount	[1]	$ 358,040	$ 319,451
Leverage Ratio To Be Well-capitalized, ratio	[1]	0.0500	0.0500
[1]	The leverage ratio consists of Tier 1capital divided by the most recent quarterly average total assets, excluding certain intangible assets.

Note 10 - Income Taxes (Details

Note 10 - Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Deferred Tax Assets, Valuation Allowance, Total	$ 1,776	$ 0
Unrecognized Tax Benefits, Ending Balance	0	0
Income Tax Examination, Penalties and Interest Expense, Total	0	0
California Franchise Tax Board [Member] | State and Local Jurisdiction [Member]
Deferred Tax Assets, Capital Loss Carryforwards	$ 2,673	2,429
Operating Loss Carryforwards, Expiration Period (Year)	5 years
Deferred Tax Assets, Valuation Allowance, Total	$ 1,776	$ 0
Income Tax Examination, Year under Examination	2019 2018 2017 2016

Note 10 - Income Taxes - Compon

Note 10 - Income Taxes - Components of Net Deferred Tax Asset (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred tax asset
Allowance for credit losses	$ 6,852	$ 6,789
State franchise taxes	2,518	2,262
Deferred compensation	4,524	4,789
Purchased assets and assumed liabilities	475	552
Post-retirement benefits	445	480
Employee benefit accruals	2,792	2,353
VISA Class B shares	348	284
Limited partnership investments	0	1,066
Impaired capital assets	2,673	2,429
Accrued liabilities	748	416
Premises and equipment	1,001	585
Lease liability	5,263	5,513
Other	103	800
Sub total deferred tax asset	27,742	28,318
Tax valuation	(1,776)	0
Total deferred tax asset	25,966	28,318
Deferred tax liability
Net deferred loan fees	196	106
Securities available for sale	20,845	48,021
Right-of-use asset	5,263	5,513
Intangible assets	459	456
Limited partnership investment	1,704	0
Total deferred tax liability	28,467	54,096
Net deferred tax liability	$ (2,501)	$ (25,778)

Note 10 - Income Taxes - Provis

Note 10 - Income Taxes - Provision for Federal and State Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Federal	$ 15,299	$ 15,982	$ 11,570
State	11,320	10,654	9,595
Total current	26,619	26,636	21,165
Federal	1,281	(538)	2,411
State	842	292	982
Total deferred	2,123	(246)	3,393
Change in valuation reserve	1,776	0	269
Provision for income taxes	30,518	26,390	24,827
Domestic Tax Authority [Member]
Change in valuation reserve	(472)	0	(71)
State and Local Jurisdiction [Member]
Change in valuation reserve	$ 2,248	$ 0	$ 340

Note 10 - Income Taxes - Reconc

Note 10 - Income Taxes - Reconciliation of Income Tax Provision (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Federal income taxes due at statutory rate	$ 24,576	$ 22,429	$ 22,095
Interest on state and municipal securities and loans not taxable for federal income tax purposes	(2,070)	(2,808)	(3,584)
State franchise taxes, net of federal income tax benefit	9,757	8,647	8,625
Change in valuation reserve	1,776	0	269
Stock compensation deduction in excess of book expense	0	(62)	(312)
Tax credits	(2,621)	(1,061)	(1,040)
Dividend received deduction	(48)	(44)	(38)
Cash value life insurance	(389)	(383)	(464)
Other	(463)	(328)	(724)
Provision for income taxes	$ 30,518	$ 26,390	$ 24,827

Note 11 - Fair Value Measurem_3

Note 11 - Fair Value Measurements (Details Textual)	12 Months Ended
	Dec. 31, 2021
Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Appraisal Rate	10.00%

Note 11 - Fair Value Measurem_4

Note 11 - Fair Value Measurements - Assets Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands		Dec. 31, 2021		Dec. 31, 2020
Investment securities available for sale		$ 4,638,855		$ 4,063,185
Agency Residential MBS [Member]
Investment securities available for sale		411,726		652,952
US Government Agencies Debt Securities [Member]
Investment securities available for sale		119		154
US States and Political Subdivisions Debt Securities [Member]
Investment securities available for sale		93,920		111,010
Debt Security, Corporate, US [Member]
Investment securities available for sale		2,746,735		2,117,978
Commercial Paper, Not Included with Cash and Cash Equivalents [Member]
Investment securities available for sale				24,990
Fair Value, Recurring [Member]
Investment securities available for sale		4,638,855		4,063,185
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Investment securities available for sale		0		0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Investment securities available for sale		4,638,855		4,063,185
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Investment securities available for sale		0	[1]	0	[2]
Fair Value, Recurring [Member] | Agency Residential MBS [Member]
Investment securities available for sale		411,726		652,952
Fair Value, Recurring [Member] | Agency Residential MBS [Member] | Fair Value, Inputs, Level 1 [Member]
Investment securities available for sale		0		0
Fair Value, Recurring [Member] | Agency Residential MBS [Member] | Fair Value, Inputs, Level 2 [Member]
Investment securities available for sale		411,726		652,952
Fair Value, Recurring [Member] | Agency Residential MBS [Member] | Fair Value, Inputs, Level 3 [Member]
Investment securities available for sale		0	[1]	0	[2]
Fair Value, Recurring [Member] | US Government Agencies Debt Securities [Member]
Investment securities available for sale		119		154
Fair Value, Recurring [Member] | US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Investment securities available for sale		0		0
Fair Value, Recurring [Member] | US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Investment securities available for sale		119		154
Fair Value, Recurring [Member] | US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Investment securities available for sale		0	[1]	0	[2]
Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member]
Investment securities available for sale		93,920		111,010
Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Investment securities available for sale		0		0
Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Investment securities available for sale		93,920		111,010
Fair Value, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Investment securities available for sale		0	[1]	0	[2]
Fair Value, Recurring [Member] | Debt Security, Corporate, US [Member]
Investment securities available for sale		2,746,735		2,117,978
Fair Value, Recurring [Member] | Debt Security, Corporate, US [Member] | Fair Value, Inputs, Level 1 [Member]
Investment securities available for sale		0		0
Fair Value, Recurring [Member] | Debt Security, Corporate, US [Member] | Fair Value, Inputs, Level 2 [Member]
Investment securities available for sale		2,746,735		2,117,978
Fair Value, Recurring [Member] | Debt Security, Corporate, US [Member] | Fair Value, Inputs, Level 3 [Member]
Investment securities available for sale		0	[1]	0	[2]
Fair Value, Recurring [Member] | Collateralized Loan Obligations [Member]
Investment securities available for sale		1,386,355		1,156,101
Fair Value, Recurring [Member] | Collateralized Loan Obligations [Member] | Fair Value, Inputs, Level 1 [Member]
Investment securities available for sale		0		0
Fair Value, Recurring [Member] | Collateralized Loan Obligations [Member] | Fair Value, Inputs, Level 2 [Member]
Investment securities available for sale		1,386,355		1,156,101
Fair Value, Recurring [Member] | Collateralized Loan Obligations [Member] | Fair Value, Inputs, Level 3 [Member]
Investment securities available for sale		$ 0	[1]	0	[2]
Fair Value, Recurring [Member] | Commercial Paper, Not Included with Cash and Cash Equivalents [Member]
Investment securities available for sale				24,990
Fair Value, Recurring [Member] | Commercial Paper, Not Included with Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member]
Investment securities available for sale				0
Fair Value, Recurring [Member] | Commercial Paper, Not Included with Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member]
Investment securities available for sale				24,990
Fair Value, Recurring [Member] | Commercial Paper, Not Included with Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member]
Investment securities available for sale	[2]			$ 0
[1]	There were no transfers in to or out of level 3 during the year ended December 31, 2021.
[2]	There were no transfers in to or out of level 3 during the year ended December 31, 2020.

Note 11 - Fair Value Measurem_5

Note 11 - Fair Value Measurements - Assets Measured at Fair Value on a Nonrecurring Basis (Details) - Fair Value, Nonrecurring [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Fair Value	$ 397	$ 9,161
Total Losses	0	0
Fair Value, Inputs, Level 1 [Member]
Fair Value	0	0
Fair Value, Inputs, Level 2 [Member]
Fair Value	0	0
Fair Value, Inputs, Level 3 [Member]
Fair Value	397	9,161
Impaired Loans [Member] | Commercial Real Estate Portfolio Segment [Member]
Fair Value	225	3,710
Total Losses	0	0
Impaired Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value	0	0
Impaired Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value	0	0
Impaired Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value	225	3,710
Impaired Loans [Member] | Commercial Portfolio Segment [Member]
Fair Value		5,270
Total Losses		0
Impaired Loans [Member] | Commercial Portfolio Segment [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value		0
Impaired Loans [Member] | Commercial Portfolio Segment [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value		0
Impaired Loans [Member] | Commercial Portfolio Segment [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value		5,270
Impaired Loans [Member] | Residential Portfolio Segment [Member]
Fair Value	172	181
Total Losses	0	0
Impaired Loans [Member] | Residential Portfolio Segment [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value	0	0
Impaired Loans [Member] | Residential Portfolio Segment [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value	0	0
Impaired Loans [Member] | Residential Portfolio Segment [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value	$ 172	$ 181

Note 11 - Fair Value Measurem_6

Note 11 - Fair Value Measurements - Fair Value Estimates for Financial Instruments, Excluding Financial Instruments Recorded at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Reported Value Measurement [Member]
Cash and due from banks	$ 1,132,085	$ 621,275
Debt securities held to maturity	306,396	515,589
Loans	1,044,612	1,232,389
Deposits	6,413,956	5,687,979
Short-term borrowed funds	146,246	102,545
Estimate of Fair Value Measurement [Member]
Cash and due from banks	1,132,085	621,275
Debt securities held to maturity	312,562	529,678
Loans	1,059,072	1,290,938
Deposits	6,413,244	5,688,049
Short-term borrowed funds	146,246	102,545
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Cash and due from banks	1,132,085	621,275
Debt securities held to maturity	0	0
Loans	0	0
Deposits	0	0
Short-term borrowed funds	0	0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Cash and due from banks	0	0
Debt securities held to maturity	312,562	529,678
Loans	0	0
Deposits	6,270,344	5,531,590
Short-term borrowed funds	146,246	102,545
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Cash and due from banks	0	0
Debt securities held to maturity	0	0
Loans	1,059,072	1,290,938
Deposits	142,900	156,459
Short-term borrowed funds	$ 0	$ 0

Note 12 - Commitments and Con_2

Note 12 - Commitments and Contingent Liabilities (Details Textual) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2021	Dec. 31, 2020	Jan. 01, 2020	Dec. 31, 2017
Loan Commitments, Not Unconditionally Cancellable		$ 34,226
Unfunded Loan Commitments		233,850	$ 277,878
Guarantor Obligations, Current Carrying Value		580	580
Reserve for Unfunded Commitments				$ 2,160
Other Liabilities [Member]
Reserve for Unfunded Commitments		201	101
Financial Standby Letter of Credit [Member]
Letters of Credit Outstanding, Amount		3,693	2,357
Commercial Standby Letters of Credit [Member]
Letters of Credit Outstanding, Amount		95	0
Customer Refunds [Member]
Loss Contingency Accrual, Ending Balance	$ 5,843	981			$ 5,542
Loss Contingency Accrual, Period Increase (Decrease), Total	$ 301
Loss Contingency Accrual, Payments		$ 452	$ 4,410

Note 13 - Retirement Benefit _3

Note 13 - Retirement Benefit Plans (Details Textual) - USD ($) Pure in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Contribution Plan, Cost	$ 1,028	$ 917	$ 1,000
Employee Stock Ownership Plan (ESOP), Compensation Expense	$ 972	$ 995	$ 986
Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Next Fiscal Year	0.00%

Note 13 - Retirement Benefit _4

Note 13 - Retirement Benefit Plans - Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Service benefit	$ (15)	$ (35)	$ (57)
Interest cost	30	52	72
Net periodic cost	$ 15	$ 17	$ 15

Note 13 - Retirement Benefit _5

Note 13 - Retirement Benefit Plans - Obligation and Funded Status (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Benefit obligation at beginning of year	$ 1,654	$ 1,782	$ 1,913
Service benefit	(15)	(35)	(57)
Interest cost	30	52	72
Benefits paid	(142)	(145)	(146)
Benefit obligation at end of year	1,527	1,654	1,782
Accumulated post-retirement benefit obligation	1,527	1,654	1,782
Fair value of plan assets	0	0	0
Accumulated post-retirement benefit obligation in excess of plan assets	1,527	1,654	1,782
Retirees [Member]
Benefit obligation at beginning of year	1,654	1,782
Benefit obligation at end of year	1,527	1,654	1,782
Accumulated post-retirement benefit obligation	1,527	1,654	1,782
Other Participants [Member]
Benefit obligation at beginning of year	0	0
Benefit obligation at end of year	0	0	0
Accumulated post-retirement benefit obligation	$ 0	$ 0	$ 0

Note 13 - Retirement Benefit _6

Note 13 - Retirement Benefit Plans - Assumptions (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Discount rate	2.46%	1.80%	2.90%
Discount rate	1.80%	2.90%	3.76%

Note 13 - Retirement Benefit _7

Note 13 - Retirement Benefit Plans - Estimated Future Benefit Payments (Details) $ in Thousands	Dec. 31, 2021USD ($)
2022, estimated future benefit payment	$ 143
2023, estimated future benefit payment	143
2024, estimated future benefit payment	142
2025, estimated future benefit payment	142
2026, estimated future benefit payment	135
Years 2027-2031, estimated future benefit payment	$ 534

Note 14 - Related Party Trans_3

Note 14 - Related Party Transactions - Related Party Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Balance	$ 499	$ 533
Originations	0	0
Principal reductions	(45)	(34)
Balance	$ 454	$ 499
Percent of total loans outstanding.	0.04%	0.04%

Note 16 - Other Comprehensive_3

Note 16 - Other Comprehensive Income (Loss) - Components of Other Comprehensive Income (Loss) and Other Related Tax Effects (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Changes in net unrealized gains arising during the year	$ (91,891)	$ 125,519	$ 93,936
Changes in net unrealized gains arising during the year	27,167	(37,108)	(27,771)
Changes in net unrealized gains arising during the year	(64,724)	88,411	66,165
Reclassification of gains (losses) included in net income, before tax	(34)	(71)	(167)
Reclassification of gains (losses) included in net income, tax	10	21	49
Reclassification of gains (losses) included in net income, net of tax	(24)	(50)	(118)
Other comprehensive income (loss), before tax	(91,925)	125,448	93,769
Other comprehensive income, tax	27,177	(37,087)	(27,722)
Other comprehensive income (loss), net of tax	$ (64,748)	$ 88,361	$ 66,047

Note 16 - Other Comprehensive_4

Note 16 - Other Comprehensive Income (Loss) - Cumulative Other Comprehensive Income (Loss) Balances (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Balance	$ 844,809	$ 731,417	$ 615,591
Changes in unrealized (losses) gains on debt securities available for sale, net of tax	(64,748)	88,361	66,047
Balance	827,102	844,809	731,417
AOCI Attributable to Parent [Member]
Balance	114,412	26,051	(39,996)
Balance	49,664	114,412	26,051
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member]
Changes in unrealized (losses) gains on debt securities available for sale, net of tax	$ (64,748)	$ 88,361	$ 66,047

Note 17 - Earnings Per Common_3

Note 17 - Earnings Per Common Share (Details Textual) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Payment Arrangement, Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	649	577	382

Note 17 - Earnings Per Common_4

Note 17 - Earnings Per Common Share - Earnings Per Common Share and Diluted Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net income (numerator)	$ 21,720	$ 22,063	$ 22,579	$ 20,147	$ 23,838	$ 20,051	$ 19,562	$ 16,962	$ 20,728	$ 20,390	$ 19,625	$ 19,646	$ 86,509	$ 80,413	$ 80,389
Weighted average number of common shares outstanding - basic (denominator) (in shares)													26,855	26,942	26,956
Basic earnings per common share (in dollars per share)	$ 0.81	$ 0.82	$ 0.84	$ 0.75	$ 0.89	$ 0.74	$ 0.72	$ 0.63	$ 0.77	$ 0.76	$ 0.73	$ 0.73	$ 3.22	$ 2.98	$ 2.98
Add common stock equivalents for options (in shares)													15	18	50
Weighted average number of common shares outstanding - diluted (denominator) (in shares)													26,870	26,960	27,006
Diluted earnings per common share (in dollars per share)	$ 0.81	$ 0.82	$ 0.84	$ 0.75	$ 0.89	$ 0.74	$ 0.72	$ 0.63	$ 0.77	$ 0.75	$ 0.73	$ 0.73	$ 3.22	$ 2.98	$ 2.98

Note 18 - Westamerica Bancorp_3

Note 18 - Westamerica Bancorporation (Parent Company Only Condensed Financial Information) - Statements of Income and Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Salaries and benefits													$ 48,011	$ 50,749	$ 51,054
Income before taxes and equity in undistributed income of subsidiaries	$ 29,467	$ 29,903	$ 30,533	$ 27,124	$ 31,894	$ 26,772	$ 25,904	$ 22,233	$ 26,950	$ 27,016	$ 25,866	$ 25,385	117,027	106,803	105,216
Income tax (expense) benefit													(30,518)	(26,390)	(24,827)
Net income	$ 21,720	$ 22,063	$ 22,579	$ 20,147	$ 23,838	$ 20,051	$ 19,562	$ 16,962	$ 20,728	$ 20,390	$ 19,625	$ 19,646	86,509	80,413	80,389
Other comprehensive (loss) income, net of tax													(64,748)	88,361	66,047
Comprehensive income													21,761	168,774	146,436
Parent Company [Member]
Dividends from subsidiaries													29,279	10,783	80,067
Interest income													44	56	54
Other income													11,608	11,438	8,778
Total income													40,931	22,277	88,899
Salaries and benefits													6,612	7,107	6,978
Other expense													2,279	2,206	3,729
Total expense													8,891	9,313	10,707
Income before taxes and equity in undistributed income of subsidiaries													32,040	12,964	78,192
Income tax (expense) benefit													(645)	(454)	636
Earnings of subsidiaries greater than subsidiary dividends													55,114	67,903	1,561
Net income													86,509	80,413	80,389
Other comprehensive (loss) income, net of tax													(64,748)	88,361	66,047
Comprehensive income													$ 21,761	$ 168,774	$ 146,436

Note 18 - Westamerica Bancorp_4

Note 18 - Westamerica Bancorporation (Parent Company Only Condensed Financial Information) - Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Premises and equipment, net	$ 31,155	$ 32,813
Other assets	185,415	159,903
Total assets	7,461,026	6,747,931
Other liabilities	73,722	112,598
Total liabilities	6,633,924	5,903,122
Shareholders' equity	827,102	844,809	$ 731,417	$ 615,591
Total liabilities and shareholders' equity	7,461,026	6,747,931
Parent Company [Member]
Cash	69,943	78,364	$ 122,663	$ 72,878
Premises and equipment, net	9,968	10,459
Accounts receivable from Westamerica Bank	224	257
Other assets	42,026	40,852
Total assets	843,229	860,635
Accounts payable to Westamerica Bank	62	29
Other liabilities	16,065	15,797
Total liabilities	16,127	15,826
Shareholders' equity	827,102	844,809
Total liabilities and shareholders' equity	843,229	860,635
Parent Company [Member] | Bank Subsidiary [Member]
Investment	720,614	730,248
Parent Company [Member] | Non-bank Subsidiaries [Member]
Investment	$ 454	$ 455

Note 18 - Westamerica Bancorp_5

Note 18 - Westamerica Bancorporation (Parent Company Only Condensed Financial Information) - Cash Flows Statement (Details) - USD ($) $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net income	$ 21,720	$ 22,063	$ 22,579	$ 20,147	$ 23,838	$ 20,051	$ 19,562	$ 16,962	$ 20,728	$ 20,390	$ 19,625	$ 19,646	$ 86,509	$ 80,413	$ 80,389
Depreciation and amortization													16,617	22,647	20,626
Increase in other assets													(3,534)	(3,528)	(14,806)
Stock option compensation expense													1,419	1,875	1,744
Provision (benefit) for deferred income tax													2,123	(246)	3,393
Increase in other liabilities													(6,940)	14,280	(5,298)
Gain on disposal of premises and equipment													0	(71)	0
Net Cash Provided by Operating Activities													88,735	107,744	80,702
Purchases of equipment													(78)	0	0
Net Cash Used by Investing Activities													(306,084)	(748,922)	(22,297)
Financing Activities
Exercise of stock options													3,017	2,838	13,699
Retirement of common stock													(232)	(16,496)	(488)
Common stock dividends paid													44,304	44,285	43,942
Net Cash Used in Financing Activities													728,159	889,032	(105,268)
Interest paid for the period													2,027	1,830	1,898
Income tax payments for the period													27,673	26,462	24,491
Parent Company [Member]
Net income													86,509	80,413	80,389
Depreciation and amortization													569	608	449
Decrease (increase) in accounts receivable from affiliates													117	(150)	80
Increase in other assets													(1,223)	(2,421)	(71)
Stock option compensation expense													1,419	1,875	1,744
Provision (benefit) for deferred income tax													645	428	(315)
Increase in other liabilities													254	855	856
Earnings of subsidiaries greater than subsidiary dividends													(55,114)	(67,903)	(1,561)
Gain on disposal of premises and equipment													0	(61)	(1,055)
Net Cash Provided by Operating Activities													33,176	13,644	80,516
Net Cash Used by Investing Activities													(78)	0	0
Financing Activities
Exercise of stock options													3,017	2,838	13,699
Retirement of common stock													(232)	(16,496)	(488)
Common stock dividends paid													44,304	44,285	43,942
Net Cash Used in Financing Activities													(41,519)	(57,943)	(30,731)
Net change in cash and due from banks													(8,421)	(44,299)	49,785
Cash and due from banks at beginning of period				$ 78,364				$ 122,663				$ 72,878	78,364	122,663	72,878
Cash and due from banks at end of period	$ 69,943				$ 78,364				$ 122,663				69,943	78,364	122,663
Interest paid for the period													0	0	0
Income tax payments for the period													$ 27,673	$ 26,462	$ 24,491

Note 19 - Quarterly Financial_3

Note 19 - Quarterly Financial Information - Quarterly Financial Information (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Interest and loan fee income	$ 43,041	$ 43,810	$ 44,276	$ 42,316	$ 42,961	$ 41,365	$ 41,539	$ 39,991	$ 39,878	$ 39,695	$ 39,626	$ 39,483	$ 173,443	$ 165,856	$ 158,682
Net interest income	42,537	43,318	43,792	41,841	42,480	40,899	41,104	39,549	39,427	39,240	39,139	38,989	171,488	164,032	156,794
Provision for loan losses	0	0	0	0	0	0	0	4,300	0	0	0	0
Noninterest income	10,842	11,282	11,032	10,189	13,959	10,476	9,554	11,648	11,732	11,809	12,288	11,579	43,345	45,637	47,408
Noninterest expense	23,912	24,697	24,291	24,906	24,545	24,603	24,754	24,664	24,209	24,033	25,561	25,183	97,806	98,566	98,986
Income before taxes and equity in undistributed income of subsidiaries	29,467	29,903	30,533	27,124	31,894	26,772	25,904	22,233	26,950	27,016	25,866	25,385	117,027	106,803	105,216
Net income	$ 21,720	$ 22,063	$ 22,579	$ 20,147	$ 23,838	$ 20,051	$ 19,562	$ 16,962	$ 20,728	$ 20,390	$ 19,625	$ 19,646	$ 86,509	$ 80,413	$ 80,389
Basic earnings per common share (in dollars per share)	$ 0.81	$ 0.82	$ 0.84	$ 0.75	$ 0.89	$ 0.74	$ 0.72	$ 0.63	$ 0.77	$ 0.76	$ 0.73	$ 0.73	$ 3.22	$ 2.98	$ 2.98
Diluted earnings per common share (in dollars per share)	0.81	0.82	0.84	0.75	0.89	0.74	0.72	0.63	0.77	0.75	0.73	0.73	3.22	2.98	2.98
Dividends paid per common share (in dollars per share)	0.42	0.41	0.41	0.41	0.41	0.41	0.41	0.41	0.41	0.41	0.41	0.40	1.65	1.64	1.63
Share price, common stock (in dollars per share)	57.73												57.73
Minimum [Member]
Share price, common stock (in dollars per share)	53.78	54.03	57.67	55.82	51.49	51.84	53.40	47.37	60.65	59.26	59.51	56.82	53.78	51.49	60.65
Maximum [Member]
Share price, common stock (in dollars per share)	$ 58	$ 58.55	$ 64.80	$ 66.43	$ 59.70	$ 63.58	$ 64.86	$ 68.01	$ 68.58	$ 64.56	$ 64.82	$ 64.48	$ 58	$ 59.70	$ 68.58