Note 11 - Income Taxes - Reconciliation of Effective Income Tax Rate (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Expected provision at the statutory rate of 21%, amount	$ 5,013	$ 4,254
Expected provision at the statutory rate of 21%, percent	21.00%	21.00%
Tax-exempt income, amount	$ (2,398)	$ (2,251)
Tax-exempt income, percent	(10.10%)	(11.10%)
Bank owned life insurance, amount	$ (284)	$ (276)
Bank owned life insurance, percent	(1.20%)	(1.40%)
Nondeductible interest expense, amount	$ 1,173	$ 883
Nondeductible interest expense, percent	4.90%	4.40%
Tax credits, amount	$ (522)	$ (635)
Tax credits, percent	(2.10%)	(3.10%)
State income tax, amount	$ 52	$ 31
State income tax, percent	(0.10%)	0.20%
Other, net, amount	$ 44	$ 40
Other, net, percent	0.50%	0.10%
Actual provision for income taxes	$ 3,078	$ 2,046
Actual provision for income taxes, percent	12.90%	10.10%