Note 7 - Derivative Financial Instruments - Schedule of Derivative Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Securities available for sale	$ 82,902	$ 103,174
Derivative Assets	82,902	103,174
Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease)	222	556
Designated as Hedging Instrument [Member]
Securities available for sale	56	626
Derivative Assets	56	626
Derivative liability	251	28
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Securities available for sale	56	626
Derivative Assets	56	626
Derivative liability	$ 251	$ 28