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Note 8 - Loans & Allowance for Credit Losses on Loans (Details Textual)
6 Months Ended 12 Months Ended
Jun. 30, 2024
USD ($)
Contract
Jun. 30, 2023
USD ($)
Dec. 31, 2023
USD ($)
Contract
Accounts Notes And Loans Receivable [Line Items]      
Financing receivable, modifications, subsequent default, number of contracts | Contract 0   0
Interest income on non-accrual loans $ 36,000 $ 316,000  
Residential Portfolio Segment [Member]      
Accounts Notes And Loans Receivable [Line Items]      
Mortgage loans in process of foreclosure, amount $ 387,000    
Residential Portfolio Segment [Member] | Maximum [Member]      
Accounts Notes And Loans Receivable [Line Items]      
Loan to value ratio 80.00%    
Revolving Home Equity Secured By 1-4 Family Properties-Personal [Member]      
Accounts Notes And Loans Receivable [Line Items]      
Revolving lines of credit $ 2,382,000   $ 4,534,000