Note 9 - Net Loss Per Share - Earnings Per Share (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Net loss	$ (2,771,591)	$ (4,036,615)
Denominator (in shares)	8,411,798	5,333,806
BASIC AND DILUTED NET LOSS PER COMMON SHARE (in dollars per share)	$ (0.33)	$ (0.76)