Note 8 - Income Taxes - Components of Income Tax Expense (Benefit) from Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Federal	$ 214	$ 3,493
State	0	522
Total current income tax expense	214	4,015
Federal	842	837
State	389	609
Total deferred income tax expense (benefit)	1,231	1,446
Change in valuation allowance	0	0
Total income tax expense	$ 1,445	$ 5,461