Note 13 - Income Taxes - Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Income tax expense (benefit) at U.S. federal statutory rate	$ 13,600	$ (3,533)
Limited tax benefit due to stock-based compensation	289	3,681
State deferred income taxes	587	(124)
Other, net	31	(261)
Total income tax expense (benefit)	$ 14,507	$ (312)
Effective income tax rate	22.40%	1.90%