Note 2 - Summary of Significant Accounting Policies - Other Comprehensive Income (Loss) (Details)	3 Months Ended
	Mar. 31, 2022 USD ($)
Beginning balance	$ (1,506,768)
Ending balance	(2,435,054)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Beginning balance	(6,651)
Other comprehensive income (loss) before reclassifications	(17,601)
Amounts reclassified from accumulated other comprehensive loss	0
Ending balance	$ (24,252)