Note 5 - Income Taxes - Summary of Income Tax Provision (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Federal	$ (2,006)	$ 1,478	$ 2,117
State	(2)	54	119
Foreign		348	1,122
Total Current Deferred –	(2,008)	1,880	3,358
Federal	(13)	(139)	(168)
State	(326)	(227)	(121)
Total Deferred	(339)	(366)	(289)
Income Tax Provision	$ (2,347)	$ 1,514	$ 3,069