Note 12 - Income Taxes - Components of Income Tax Provision (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Federal	$ 24,955	$ 2,842	$ 1,682
State	35	(1)	8
Foreign	3,801	3,814	3,105
Federal	4,929	(1,221)	(213)
Foreign	(3,524)	(467)	(301)
Income tax expense	$ 30,196	$ 4,967	$ 4,281