Note 13 - Financial Instruments With Off-balance Sheet Risk - Financial Instruments Outstanding Representing Credit Risk (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Commitments to Extend Credit [Member]
Off balance sheet liability, amount	$ 181,395	$ 178,341
Standby Letters of Credit 1 [Member]
Off balance sheet liability, amount	13,984	13,474
Interest Rate Lock Commitments [Member]
Off balance sheet liability, amount	$ 18,287	$ 40,362