Note 18 - Derivative Financial Instruments - Outstanding Undesignated Interest Rate Swap Contracts (Details) - Not Designated as Hedging Instrument [Member] - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Receiving [Member]
Derivative Liability, Notional Amount	$ 127,607	$ 119,940
Weighted average maturity (Year)	7 years 3 months 18 days	7 years 9 months 18 days
Fair value	$ 4,180	$ 8,374
Paying [Member]
Derivative Liability, Notional Amount	$ 127,607	$ 119,940
Weighted average maturity (Year)	7 years 3 months 18 days	7 years 9 months 18 days
Fair value	$ 4,194	$ 8,391