Note 7 - Income Taxes - Components of Income Tax Expense (Benefit) from Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Federal	$ 5,116	$ 5,194
State	1,198	677
Total current income tax expense	6,314	5,871
Federal	587	1,417
State	167	844
Total deferred income tax expense	754	2,261
Change in valuation allowance	0	0
Total income tax expense	$ 7,068	$ 8,132