Note 9 - Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Taxes.
Income tax expense	$ 6,596	$ 1,588	$ 27,068	$ 1,650
Amount of tax benefit for legislative changes				$ 1,600
Effective Income Tax Rate Reconciliation, Percent, Total	20.00%	21.00%	21.90%	13.00%
Statutory rate			21.00%