Note 13 - Income Taxes - Reconciliation of the Expected Federal Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income tax expense (benefit) at statutory rate	$ (2,949)	$ 984
State income taxes, net of federal tax benefit	36	36
Valuation allowance	2,528	(688)
Change in federal tax rate
Change in state tax rate
Bankruptcy reorganization	9	17
Uncertain tax positions		(371)
Other	401	(267)
Total income tax expense (benefit)	$ 25	$ (289)