Note 7 - Loss Per Share (Tables)

3 Months Ended

Mar. 31, 2023

Notes Tables

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	Three Months Ended March 31,
	2023			2022
Numerator:
Net loss attributable to common stockholders: basic and diluted calculation	$	(3,421,802	)	$	(3,370,715	)
Denominator:
Weighted average common shares outstanding-basic		3,968,099			3,291,722
Effect of diluted stock options, warrants, and preferred stock (1)		-			-
Weighted average common shares outstanding - diluted		3,968,099			3,291,722
Loss per common share-basic and diluted	$	(0.86	)	$	(1.02	)

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

	Three Months Ended March 31,
	2023		2022
Options		47,805		51,529
Restricted Stock Units		2,500		22,084
Warrants		1,812,379		1,583,063
Series B Convertible Preferred Stock		16		16