Note 11 - Derivative Financial Instruments - Schedule of Derivative Instruments (Details) - Interest Rate Swap [Member] - USD ($) |
Jun. 30, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Notional amount fair value hedge | $ 66,800,000 | $ 65,700,000 |
| Fair Value Hedging [Member] | ||
| Notional amount fair value hedge | $ 100,000,000 | $ 100,000,000 |
| Fixed pay rates | 4.35% | 4.35% |
| Variable SOFR receive rates | 4.45% | 4.49% |
| Remaining maturity (in years) (Year) | 1 year 1 month 6 days | 1 year 7 months 6 days |
| Fair value | $ (571,000) | $ (168,000) |