Note 11 - 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 attributable to common stockholders	$	(6,281	)	$	(4,786	)
Denominator
Weighted average common shares outstanding used to compute net loss per share, basic and diluted		126,624			126,624
Net loss per share of common stock, basic and diluted	$	(0.05	)	$	(0.04	)

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

	Three Months Ended March 31,
	2023		2022
Options to purchase common stock		14,743		11,089
Series B convertible preferred stock		165		165
Warrants to purchase common stock		21,515		22,277
		36,423		33,531