Note 11 - Loss Per Share - Shares Used in Basic and Diluted Loss Per Common Share Computations (Details) - USD ($)		3 Months Ended		6 Months Ended
		Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Net loss attributable to common stockholders: basic and diluted calculation		$ (3,181,261)	$ (3,923,368)	$ (7,400,104)	$ (7,345,170)
Weighted average shares used in computation – basic and diluted (in shares)		4,664,771	3,996,512	4,363,812	3,982,384
Effect of diluted stock options, warrants, and preferred stock (1) (in shares)	[1]	0	0	0	0
Weighted average common shares outstanding - diluted (in shares)		4,664,771	3,996,512	4,363,812	3,982,384
Net (loss) per common share – basic and diluted (in dollars per share)		$ (0.68)	$ (0.98)	$ (1.7)	$ (1.84)

[1] The following is a summary of the number of underlying shares outstanding at the end of the respective periods that have been excluded from the diluted calculations because the effect on loss per common share would have been anti-dilutive: