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Note 2 - Securities (Details Textual)
$ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2023
USD ($)
Dec. 31, 2022
USD ($)
Sep. 01, 2022
USD ($)
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss $ 786    
Debt Securities, Held-to-Maturity, Accrued Interest, after Allowance for Credit Loss $ 593    
Weighted Average Re-pricing Term (Year) 5 years 10 months 24 days 6 years 6 months  
Available For Sale Securities Transferred to Held For Sale     24
Debt Securities, Available-for-Sale, Amortized Cost $ 176,499 $ 186,826 $ 82,200
Debt Securities, Available-for-Sale, Total 148,175 162,907 74,400
Debt Securities, Available-for-Sale, Unrealized Loss     $ 7,800
OCI, Debt Securities, Available-for-Sale, Transfer to Held-to-Maturity, Adjustment from AOCI for Amortization of Gain (Loss), before Tax 1,200    
Other Assets [Member]      
Equity Securities without Readily Determinable Fair Value, Amount $ 642 599  
US Treasury Securities [Member]      
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions 3    
Available-for-Sale Securities, Number of Securities 3    
Debt Securities, Available-for-Sale, Amortized Cost $ 12,474 12,468  
Debt Securities, Available-for-Sale, Total $ 11,113 11,229  
Mortgage-Backed Securities, Issued by US Government Sponsored Enterprises [Member]      
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions 94    
Available-for-Sale Securities, Number of Securities 107    
US States and Political Subdivisions Debt Securities [Member]      
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions 97    
Available-for-Sale Securities, Number of Securities 104    
Debt Securities, Available-for-Sale, Amortized Cost $ 64,131 64,386  
Debt Securities, Available-for-Sale, Total $ 52,768 $ 54,760