v3.26.1
Note 11 - Derivative Financial Instruments - Schedule of Derivative Instruments (Details) - Interest Rate Swap [Member] - USD ($)
Jun. 30, 2026
Dec. 31, 2025
Notional amount fair value hedge $ 103,600,000 $ 88,700,000
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 3.68% 3.87%
Remaining maturity (in years) (Year) 1 month 6 days 7 months 6 days
Fair value $ (337,000) $ (529,000)