Note 13 - Income Taxes - Income Tax Expense (Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
US Federal, current	$ 110	$ 0
US State, current	232	0
Total current provision	342	0
US Federal, deferred	0	0
US State, deferred	0	0
Total deferred benefit	0	0
Total provision for income taxes	$ 342	$ (0)