Note 11 - Income Taxes - Provision for Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Current:
Federal	$ 0	$ (102)
State	24	0
Total current	24	(102)
Deferred:
Federal	0	0
State	0	0
Total deferred	0	0
Income tax (benefit) expense from continuing operations	$ 24	$ (102)