Note 11 - Income Taxes - Income Tax Reconciliation (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Income taxes based on U.S. statutory rate of 21% and 34%, respectively	$ 1,150,000	$ 923,000
Non-deductible meals & entertainment	12,000
FDII deduction	6,000	22,000
Foreign taxes	(82,000)	(23,000)
State taxes	169,000	170,000
Stock Compensation	18,000	60,000
Other	(25,000)	5,000
Provision for income taxes	$ 1,236,000	$ 1,113,000