Note 2 - Summary of Significant Accounting Policies - Other Comprehensive Income (Loss) (Details)	9 Months Ended
	Sep. 30, 2021 USD ($)
Beginning balance	$ 143,486,116
Ending balance	74,194,620
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Beginning balance	0
Other comprehensive income (loss) before reclassifications	(2,014)
Amounts reclassified from accumulated other comprehensive loss	0
Ending balance	$ (2,014)