Note 7 - Commitment and Contingencies - Schedule of Off-balance Sheet Credit Risk (Details) - USD ($) $ in Thousands |
6 Months Ended | 12 Months Ended |
|---|---|---|
Jun. 30, 2025 |
Dec. 31, 2024 |
|
| Off-balance sheet credit risk | $ 165,956 | $ 156,384 |
| Loan Origination Commitments [Member] | ||
| Off-balance sheet credit risk | 18,479 | 21,542 |
| Unused lines of Credit [Member] | ||
| Off-balance sheet credit risk | 87,292 | 80,156 |
| Unadvanced Funds on Construction Loans [Member] | ||
| Off-balance sheet credit risk | 60,135 | 54,636 |
| Letter of Credit [Member] | ||
| Off-balance sheet credit risk | $ 50 | $ 50 |