Note 7 - Income Taxes - Components of Income Tax Expense (Benefit) from Operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Federal	$ 7,835	$ 7,129	$ 20,047	$ 20,409
State	1,696	1,859	4,552	4,223
Total current income tax expense	9,531	8,988	24,599	24,632
Federal	(1,560)	(1,087)	(1,830)	(1,311)
State	(332)	(259)	(392)	428
Total deferred income tax expense	(1,892)	(1,346)	(2,222)	(883)
Change in valuation allowance	0	0	0	0
Total income tax expense	$ 7,639	$ 7,642	$ 22,377	$ 23,749