Note 13 - Financial Instruments With Off-balance Sheet Risk - Financial Instruments Outstanding Representing Credit Risk (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Commitments to Extend Credit [Member]
Off balance sheet liability, amount	$ 220,656	$ 197,459
Standby Letters of Credit 1 [Member]
Off balance sheet liability, amount	20,711	17,021
Interest Rate Lock Commitments [Member]
Off balance sheet liability, amount	$ 7,325	$ 8,654