Note 18 - Income Taxes - Components of Income Tax Expense (Benefit) Applicable to Continuing Operations (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Current:
Federal	$ 0	$ 0
State	6	(125)
Foreign	52	235
Total current income tax expense	58	110
Deferred:
Federal	0	0
State	0	0
Foreign	1,015	(3,070)
Total deferred income tax expense (benefit)	1,015	(3,070)
Income tax expense (benefit), net	$ 1,073	$ (2,960)

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