Note 7 - Income Taxes - Income Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Statutory Rate	$ (259)	$ (172)
State Income Tax	60	(29)
Effect of foreign operations	(18)	(23)
Uncertain tax benefits, including federal benefit for state reserves		44
Change in State Deferred Rate	(115)
Valuation allowance	101	790
US Permanent differences	5	36
Federal Tax Credits	(108)	(70)
Global Intangible Low-Taxed Income Effect	125	80
Return to provision - credits, perm diffs	4	(240)
Deferred Adjustment		(16)
Goodwill Impairment	499
Other	16	9
Income Tax Expense (Benefit), Total	$ 310	$ 409