Note 13 - Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Unrecognized tax benefits at beginning of period	$ 4,309	$ 3,306	$ 3,007
Gross increases – tax positions in current year	2,025	1,512	651
Reductions due to lapse of statute of limitations	(957)	(509)	(352)
Unrecognized tax benefits at end of period	$ 5,377	$ 4,309	$ 3,306