Note 5 - Premises and Equipment - Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Premises and Equipment, gross	$ 22,178	$ 23,710
Less accumulated depreciation and amortization	(13,714)	(13,581)
Premises and equipment, net of accumulated depreciation and amortization	8,464	10,129
Land [Member]
Premises and Equipment, gross	676	676
Building [Member]
Premises and Equipment, gross	3,652	3,652
Building Improvements [Member]
Premises and Equipment, gross	10,450	11,235
Furniture, Fixtures, and Equipment [Member]
Premises and Equipment, gross	6,447	7,483
Software and Software Development Costs [Member]
Premises and Equipment, gross	549	592
Automobiles [Member]
Premises and Equipment, gross	12	66
Construction in Progress [Member]
Premises and Equipment, gross	$ 392	$ 6