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Note 5 - Loan Servicing (Details Textual) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
Loan Servicing Fees Net of Amortization | $ 2,265 | $ 2,576 | $ 2,209
Servicing Asset, Custodial Balance | 8,300 | 6,400 |
Servicing Asset | 6,985 | 8,110 |
Mortgages [Member] |  |  |
Servicing Asset | $ 11,400 | $ 12,100 |
Mortgages [Member] | Measurement Input, Discount Rate [Member] |  |  |
Servicing Asset, Measurement Input | 0.1116 | 0.1123 |
Mortgages [Member] | Measurement Input, Prepayment Rate [Member] |  |  |
Servicing Asset, Measurement Input | 0.0752 | 0.0791 |
Mortgages [Member] | Measurement Input, Default Rate [Member] |  |  |
Servicing Asset, Measurement Input | 0.001 | 0.001 |
Small Business Administration Loans [Member] |  |  |
Servicing Asset | $ 2,300 | $ 2,800 |
Small Business Administration Loans [Member] | Measurement Input, Discount Rate [Member] |  |  |
Servicing Asset, Measurement Input | 0.085 | 0.085 |
Small Business Administration Loans [Member] | Measurement Input, Prepayment Rate [Member] |  |  |
Servicing Asset, Measurement Input | 0.1946 | 0.1768 |
Small Business Administration Loans [Member] | Measurement Input, Default Rate [Member] |  |  |
Servicing Asset, Measurement Input | 0.0104 | 0.0073 |

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