Note 10 - Income Taxes - Components of Income Tax Expense (Benefit) from Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Federal	$ 25,360	$ 22,405	$ 13,292
State	5,254	2,962	2,059
Total current income tax expense	30,614	25,367	15,351
Federal	(977)	(513)	3,318
State	542	2,336	2,176
Total deferred income tax expense (benefit)	(435)	1,823	5,494
Change in valuation allowance	0	0	(93)
Total income tax expense	$ 30,179	$ 27,190	$ 20,752