Note 9 - Net 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	$	(5,007,085	)	$	(2,771,591	)
Denominator		11,003,588			8,411,798
Weighted-average common shares outstanding, basic and diluted	$	(0.46	)	$	(0.33	)

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

	Three Months Ended
	March 31,
	2023		2022
Stock options		771,527		412,263
Warrants		7,419,760		2,048,186