Note 17 - Income Taxes - Components of Income Before Taxes and Provision for (Benefit from) Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Domestic	$ (25,722)	$ 38,299	$ 26,227
Foreign	(2,902)	(2,178)	(3,020)
Income before income taxes	(28,624)	36,121	23,207
Federal	357	6,245	4,783
State	(1,970)	1,884	1,644
Foreign	49	202	405
Total current	(1,564)	8,331	6,832
Federal	(1,980)	1,086	(992)
State	(1,070)	324	(152)
Foreign	(28)	(813)	(1,203)
Total deferred	(3,078)	597	(2,347)
Total provision	$ (4,642)	$ 8,928	$ 4,485