Note 7 - Income Taxes - Components of Income Tax Expense (Benefit) from Operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Federal	$ 7,129	$ 9,231	$ 20,409	$ 12,838
State	1,859	1,261	4,223	1,875
Total current income tax expense	8,988	10,492	24,632	14,713
Federal	(1,087)	(1,922)	(1,311)	1,542
State	(259)	454	428	1,761
Total deferred income tax expense	(1,346)	(1,468)	(883)	3,303
Change in valuation allowance	0	0	0	0
Total income tax expense	$ 7,642	$ 9,024	$ 23,749	$ 18,016