Note 4 - Derivatives - Summary of Fair Value Hedge Relationships (Details) - Interest Rate Swap [Member] - Fair Value Hedging [Member] - Designated as Hedging Instrument [Member] - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Weighted Average Remaining Maturity (Year)	7 years 8 months 1 day	8 years 5 months 1 day
Notional Amount	$ 30,000	$ 30,000
Other Assets [Member]
Estimated Fair Value	$ 4,826	$ 1,192
London Interbank Offered Rate (LIBOR) Swap Rate [Member]
Weighted Average Pay Rate	0.65%	0.65%