Note 10 - Financial Instrument Commitments (Details) - USD ($) $ in Thousands |
Jun. 30, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Commitments And Contingencies Disclosure [Line Items] | ||
| Total financial instrument commitments | $ 445,503 | $ 348,527 |
| Commitments to Extend Credit [Member] | ||
| Commitments And Contingencies Disclosure [Line Items] | ||
| Total financial instrument commitments | 424,583 | 329,509 |
| Standby Letters of Credit [Member] | ||
| Commitments And Contingencies Disclosure [Line Items] | ||
| Total financial instrument commitments | $ 20,920 | $ 19,018 |