Note 16 - Commitments and Contingencies - Commitments to Extend Credit (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Fixed rate	$ 3,400	$ 6,242
Adjustable rate	15,650	5,012
Commitments to extend credit	157,086	118,171
Standby Letters of Credit [Member]
Commitments to extend credit	183	346
Undisbursed Commercial and Personal Lines of Credit [Member]
Commitments to extend credit	44,918	29,194
Undisbursed Portion of Construction Loans in Process [Member]
Commitments to extend credit	26,520	19,179
Undisbursed Portion of Home Equity Lines of Credit [Member]
Commitments to extend credit	$ 66,415	$ 58,198