Note 12 - Loss Per Share - Shares Used in Basic and Diluted Loss Per Common Share Computations (Details) - USD ($)		3 Months Ended		9 Months Ended
		Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Net loss from continuing operations		$ (2,283,413)	$ (2,748,367)	$ (8,759,343)	$ (9,025,398)
Loss from discontinued operations		$ (811,277)	(415,083)	(1,735,451)	(1,483,222)
us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic			$ (3,163,450)	$ (10,494,794)	$ (10,508,620)
Weighted average shares used in computation – basic and diluted (in shares)		6,396,221	4,031,356	5,046,227	3,998,887
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)		6,396,221	4,031,356	5,046,227	3,998,887
Loss from continuing operations (in dollars per share)		$ (0.36)	$ (0.68)	$ (1.74)	$ (2.26)
Net (loss) from discontinued operations attributable to common stockholders per common share – basic and diluted (in dollars per share)		(0.13)	(0.1)	(0.34)	(0.37)
(Loss) per common share-basic and diluted (in dollars per share)		$ (0.48)	$ (0.78)	$ (2.08)	$ (2.63)

[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: