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Note 1 - Summary of Significant Accounting Policies (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Jan. 01, 2023
Dec. 31, 2021
Maturity Period of Interest-bearing Deposits in Other Banks (Year) 1 year    
Debt Securities, Held-to-maturity, Total $ 0    
Minimum Period of Time Between Issuance and Sale of Loan Commitment (Day) 30 days    
Maximum Period of Time Between Issuance and Sale of Loan Commitment (Day) 60 days    
Period to Discontinued Interest Accrual on Delinquent Loans (Day) 90 days    
Past Due Period when Loans are Charged Off (Day) 120 days    
Financing Receivable, Allowance for Credit Loss, Ending Balance $ 19,555   $ 18,678
Software Development [Member]      
Property, Plant and Equipment, Useful Life (Year) 3 years    
Minimum [Member]      
Property, Plant and Equipment, Useful Life (Year) 3 years    
Finite-Lived Intangible Asset, Useful Life (Year) 5 years    
Maximum [Member]      
Property, Plant and Equipment, Useful Life (Year) 39 years    
Finite-Lived Intangible Asset, Useful Life (Year) 10 years    
Subsequent Event [Member] | Accounting Standards Update 2016-13 [Member] | Minimum [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]      
Financing Receivable, Allowance for Credit Loss, Ending Balance   $ 4,000  
Subsequent Event [Member] | Accounting Standards Update 2016-13 [Member] | Maximum [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]      
Financing Receivable, Allowance for Credit Loss, Ending Balance   $ 6,000