Note 13 - Income Taxes - Income Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Expected federal income tax expense	$ 1,796	$ 2,367
Items affecting federal income tax:
State income taxes, net of federal income tax deduction	557	899
Other, net	195	(40)
Income tax expense	$ 2,548	$ 3,226