Note 9 - Net Loss Per Share - Earnings Per Share (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Net loss	$ (5,007,085)	$ (2,771,591)
Weighted-average common shares outstanding, basic and diluted (in shares)	11,003,588	8,411,798
BASIC AND DILUTED NET LOSS PER COMMON SHARE (in dollars per share)	$ (0.46)	$ (0.33)