Note 10 - Net Loss Per Share - Schedule of Earnings Per Share (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Net loss attributable to common shareholders	$ (3,538,069)	$ (2,947,420)
Weighted average common shares outstanding used to compute net loss per share, basic and diluted (in shares)	92,587,168	9,130,984
Net loss per share of common stock, basic and diluted: (in dollars per share)	$ (0.04)	$ (0.32)