Note 9 - Income Taxes - Reconciliation of Expected Income Tax Expense With Reported Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Computed "expected" income tax expense	$ 3,922	$ 6,670
Tax-exempt interest income	(354)	(728)
Nondeductible interest expense	(170)	24
Other, net	(414)	(135)
Total income tax expense	$ 2,984	$ 5,831