Quarterly report pursuant to Section 13 or 15(d)

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

v3.23.3
Note 1 - Summary of Significant Accounting Policies (Details Textual)
 9 Months Ended 12 Months Ended
Sep. 30, 2023
USD ($)
Dec. 31, 2022
USD ($)
Jun. 30, 2023
USD ($)
Jan. 01, 2023
USD ($)
Sep. 30, 2022
USD ($)
Jun. 30, 2022
USD ($)
Dec. 31, 2021
USD ($)
Number Of Full Service Branch Offices 26            
Financing Receivable, Allowance for Credit Loss $ 17,001,000 $ 15,285,000 $ 17,109,000   $ 14,821,000 $ 14,631,000 $ 15,889,000
Retained Earnings (Accumulated Deficit) 83,349,000 59,036,000          
Deferred Income Tax Assets, Net $ 10,226,000 9,712,000          
Number of Loan Segments 8            
Interest Receivable $ 9,957,000 7,606,000          
Debt Securities, Held-to-Maturity, Allowance for Credit Loss 0            
Increase (Decrease) in Loan, Held-for-Sale 0 4,000          
Collateralized Mortgage-Backed Securities [Member]              
Credit Risk Derivatives, at Fair Value, Net $ 2,000 0          
Interest Rate Swap [Member]              
Derivative, Number of Instruments Held 2            
Derivative Asset, Notional Amount $ 110,700,000 125,300,000          
Derivative Asset, Subject to Master Netting Arrangement, before Offset 6,800,000 6,500,000          
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset 6,800,000 6,500,000          
Debt Securities [Member]              
Interest Receivable 4,400,000 3,400,000          
Interest Rate Lock Commitments [Member]              
Credit Risk Derivatives, at Fair Value, Net 2,000 0          
Loans and Finance Receivables [Member]              
Interest Receivable 4,800,000 4,000,000.0          
Minimum [Member]              
Peer Group Assets 1,000,000,000            
Maximum [Member]              
Peer Group Assets $ 3,000,000,000            
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]              
Financing Receivable, Allowance for Credit Loss   $ 1,476,000   $ 1,500,000      
Off-Balance-Sheet, Credit Loss, Liability       62,000      
Retained Earnings (Accumulated Deficit)       1,200,000      
Deferred Income Tax Assets, Net       $ 323,000