Note 16 - Off-balance Sheet Activities - Off-balance Sheet Financial Instruments Whose Contractual Amounts Represents Credit Risk (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Commitments to Extend Credit [Member]
Off-balance sheet financial instruments outstanding	$ 635,851	$ 654,436
Standby Letters of Credit [Member]
Off-balance sheet financial instruments outstanding	12,897	10,201
Mortgage Loan Rate Lock Commitments [Member]
Off-balance sheet financial instruments outstanding	$ 1,920	$ 10,891