Note 13 - Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Federal	$ 0	$ 0
Foreign	0	0
State	21	51
Total current provision	21	51
Federal	(1,636)	3,464
State	(304)	588
Total deferred provision	(1,940)	4,052
Increase (decrease) in deferred tax valuation allowance	1,944	(4,055)
Total provision for income taxes	$ 25	$ 48