Note 13 - Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Federal
Foreign
State	51	57
Total current provision	51	57
Federal	3,464	(558)
State	588	(453)
Total deferred provision	4,052	(1,011)
(Decrease) increase in deferred tax valuation allowance	(4,055)	992
Total provision for income taxes	$ 48	$ 38