Note 9 - Income Taxes - Components of Provision (Benefit) for Income Taxes (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Federal	$ 9,000	$ 209,000
State	93,000	88,000
Foreign	107,000	117,000
Total current	209,000	414,000
Federal	98,000	(1,909,000)
State	(18,000)	(266,000)
Foreign	(20,000)	24,000
Total deferred	60,000	(2,151,000)
Income Tax Expense (Benefit), Total	$ 269,000	$ (1,737,000)