Note 8 - Income Taxes - Income Tax Provisions (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Federal	$ 0	$ 0	$ 0
State	(7)	6	22
Foreign - Other	45	2	682
Total current	38	8	704
Federal	(1,894)	(8,959)	1,325
State	928	(481)	379
Foreign - Other	(1,091)	(373)	(218)
Total deferred	(2,057)	(9,813)	1,486
Income tax expense (benefit)	$ (2,019)	$ (9,805)	$ 2,190