Note 10 - Income Taxes - Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Federal, current	$ 9,875	$ 63
Federal, deferred	6,584	(2,391)
State, current	2,777	2,349
State, deferred	1,727	(2,825)
Income tax (benefit) expense	$ 20,962	$ (2,804)