Note 13 - Commitments - Schedule of Financial Commitments Represents Credit Risk (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Financial commitments, contractual amount, fixed rate	$ 198,379
Financial commitments, contractual amount, variable rate		$ 345,524
Standby Letters of Credit [Member]
Financial commitments, contractual amount, fixed rate	2,687
Financial commitments, contractual amount, variable rate		2,638
Commitments to Make Loans [Member]
Financial commitments, contractual amount, fixed rate	85,170
Financial commitments, contractual amount, variable rate		129,821
Unused lines of Credit [Member]
Financial commitments, contractual amount, fixed rate	106,670
Financial commitments, contractual amount, variable rate		211,044
Commercial And Similar Letters Of Credit [Member]
Financial commitments, contractual amount, fixed rate	$ 3,852
Financial commitments, contractual amount, variable rate		$ 2,021