Note 7 - Income Taxes - Components of Provision (Benefit) for Income Taxes (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Federal	$ 355,000	$ 9,000
State	60,000	93,000
Foreign	204,000	107,000
Total current	619,000	209,000
Federal	290,000	98,000
State	48,000	(18,000)
Foreign	6,000	(20,000)
Total deferred	344,000	60,000
Income Tax Expense (Benefit), Total	$ 963,000	$ 269,000