Note 17 - Income Taxes - Components of Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current:
Federal
State	3	2	3
Foreign	235	488	106
Total Current	238	490	109
Deferred:
Federal
State
Foreign
Total Deferred
Provision for income taxes	$ 238	$ 490	$ 109