Note 10 - Income Taxes - Income Tax Expense (Benefits) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Federal, current	$ 0	$ 0
State, current	456	500
Foreign, current	336,568	250,711
Total current	337,024	251,211
Federal, deferred	0	0
State, deferred	0	0
Foreign, deferred	(130,767)	(129,004)
Total deferred	(130,767)	(129,004)
Income tax provision	$ 206,257	$ 122,207