Note 10 - Income Taxes - Components of Income (Loss) Before Income Tax Provision (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
U.S.	$ (1,143,578)	$ (2,537,388)
Foreign	653,075	427,042
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total	$ (490,503)	$ (2,110,346)