Note 5 - Income Taxes - Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Domestic	$ (5,672)	$ 603
Foreign		9,780	$ 8,671
Total:	4,108	9,274
Federal		473
Foreign	2,438	(218)
State		35
Federal	(654)	(81)
Foreign	219	(7)
State	(12)	110
Net expense	$ 2,108	$ 312