Note 7 - Income Taxes - Components of Provision (Benefit) for Income Taxes (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Federal	$ 940,000	$ 355,000
State	115,000	60,000
Foreign	135,000	204,000
Total current	1,190,000	619,000
Federal	(672,000)	290,000
State	(77,000)	48,000
Foreign	(10,000)	6,000
Total deferred	(759,000)	344,000
Income Tax Expense (Benefit)	$ 431,000	$ 963,000