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Note 4 - Loans and Allowance for Credit Losses (Details Textual) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024
Interest Receivable | $ 4,558,000 |  | $ 4,575,000
Financing Receivable, Nonaccrual, Interest Income | 0 | $ 0 |
Financing Receivable, Modified, Subsequent Default | 0 | 0 |
Financing Receivable, Modified, Commitment to Lend | 0 | 0 |
Unfunded Loan Commitment [Member] |  |  |
Off-Balance-Sheet, Credit Loss, Liability | 131,000 |  | 131,000
Off-Balance-Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal) | 0 | 0 |
Commercial Business [Member] |  |  |
Financing Receivable, Modified in Period, Amount | 0 | $ 2,000,000 |
Financing Receivable, Modified in Period, to Total Financing Receivables, Percentage |  | 3.00% |
Financing Receivable Modification, Increase (Decrease) from Modification |  | $ 0 |
Financing Receivable, Modified, Payment Deferral, Period |  | 0 years |
Financing Receivable, Modified, Weighted Average Interest Rate Decrease from Modification |  | 0.00% |
Accrued Interest Receivable [Member] |  |  |
Interest Receivable | $ 2,400,000 |  | $ 2,400,000

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