Note 13 - Commitments and Contingencies - Financial Instrument Represent Credit Risk (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Commitments to Extend Credit [Member]
Financial instruments, contracts representing credit risk	$ 25	$ 2,720
Standby Letters of Credit [Member]
Financial instruments, contracts representing credit risk	758	212
Unfunded Commitments Lines of Credit and Loans [Member]
Financial instruments, contracts representing credit risk	$ 225,836	$ 270,273