Note 8 - Premises and Equipment - Major Classifications of Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Land and land improvements	$ 4,896	$ 4,896
Building and leasehold improvements	21,014	20,537
Furniture, fixtures, and equipment	10,104	9,485
Total premises and equipment	39,470	38,621
Less accumulated depreciation and amortization	18,131	16,660
Total premises and equipment, net	21,339	21,961
Premises and Equipment, Net [Member]
Financing right-of-use assets	$ 3,456	$ 3,703