Note 9 - Commitments and Contingencies - Schedule of Off Balance Sheet Instruments (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended |
|---|---|---|
Mar. 31, 2026 |
Dec. 31, 2025 |
|
| Financial Standby Letter of Credit [Member] | ||
| Fixed rate commitments | $ 174 | $ 174 |
| Variable rate commitments | 19,387 | 18,994 |
| Unfunded Loan Commitment [Member] | ||
| Fixed rate commitments | 44,852 | 37,731 |
| Variable rate commitments | $ 647,179 | $ 650,384 |