Annual report pursuant to Section 13 and 15(d)

Note 1 - Summary of Significant Accounting Policies (Details Textual)

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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
Dec. 31, 2020
Loans and Leases Receivable, Allowance $ 12,897   $ 13,343 $ 12,458
Cash Accounts [Member]        
Cash, Uninsured Amount 13,500      
Cash Held by FRB and FHLB [Member]        
Cash, Uninsured Amount 3,200      
Asset Pledged as Collateral [Member]        
Financial Instruments, Owned, at Fair Value, Total 223,700   39,500  
Asset Pledged as Collateral [Member] | Derivative [Member]        
Financial Instruments, Owned, at Fair Value, Total $ 3,900   $ 3,900  
Minimum [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Subsequent Event [Member] | Accounting Standards Update 2016-13 [Member]        
Loans and Leases Receivable, Allowance   $ 3,800    
Maximum [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Subsequent Event [Member] | Accounting Standards Update 2016-13 [Member]        
Loans and Leases Receivable, Allowance   $ 6,800    
Premises and Equipment [Member] | Minimum [Member]        
Property, Plant and Equipment, Useful Life (Year) 15 years      
Premises and Equipment [Member] | Maximum [Member]        
Property, Plant and Equipment, Useful Life (Year) 39 years      
Furniture and Equipment [Member] | Minimum [Member]        
Property, Plant and Equipment, Useful Life (Year) 2 years      
Furniture and Equipment [Member] | Maximum [Member]        
Property, Plant and Equipment, Useful Life (Year) 10 years