Note 9 - Net Loss Per Share - Earnings Per Share (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Net loss	$ (4,771,353)	$ (4,246,880)	$ (14,414,893)	$ (10,470,461)
Weighted-average common shares outstanding, basic and diluted (in shares)	16,191,723	8,447,630	14,394,920	8,428,074
BASIC AND DILUTED NET LOSS PER COMMON SHARE (in dollars per share)	$ (0.29)	$ (50)	$ (1.00)	$ (1.24)