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Note 7 - Borrowed Funds (Details Textual) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended |  |
--- | --- | --- | --- | ---
Jan. 31, 2024 | Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024 | Feb. 28, 2024
Proceeds from Short-Term Debt |  | $ 0 | $ (95,625) |  |
Securities available for sale, at fair value |  | 391,718 |  | $ 389,243 |
Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available |  | 31,700 |  |  |
Residential Mortgage Segment [Member] |  |  |  |  |
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged |  | 54,700 |  |  |
US Treasury Securities [Member] |  |  |  |  |
Investment Owned, Face Amount |  | 5,000 |  |  |
Overdraft Line Of Credit Expiring February 28, 2025 [Member] |  |  |  |  |
Federal Home Loan Bank Overdraft, Line of Credit |  |  |  |  | $ 10,000
Federal Home Loan Bank, Overdraft, Line Of Credit, Borrowings Outstanding |  | 0 |  | 0 |
Federal Reserve Bank Advances [Member] |  |  |  |  |
Proceeds from Short-Term Debt | $ 33,600 |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 4.85% |  |  |  |
Debt Instrument, Term | 1 year |  |  |  |
Short-Term Debt |  | 0 |  | $ 0 |
Federal Reserve Bank Advances [Member] | Asset Pledged as Collateral [Member] | Discount Window [Member] |  |  |  |  |
Securities available for sale, at fair value |  | $ 16,700 |  |  |

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