Note 13 - Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Federal	$ 0	$ 0
State	48	21
Total current provision	48	21
Federal	(2,102)	(1,636)
State	(460)	(304)
Total deferred provision	(2,562)	(1,940)
Increase in deferred tax valuation allowance	2,549	1,944
Total provision for income taxes	$ 35	$ 25