Note 11 - Net Loss Per Share (Tables)

9 Months Ended

Sep. 30, 2022

Notes Tables

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

	Three Months Ended September 30,						Nine Months Ended September 30,
	2022			2021			2022			2021
Numerator
Net loss attributable to common shareholders	$	(8,011	)	$	(5,197	)	$	(19,469	)	$	(15,774	)
Denominator
Weighted average common shares outstanding used to compute net loss per share, basic and diluted		126,624			126,538			126,624			113,690
Net loss per share of common stock, basic and diluted	$	(0.06	)	$	(0.04	)	$	(0.15	)	$	(0.14	)

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

	Three Months Ended September 30,				Nine Months Ended September 30,
	2022		2021		2022		2021
Options to purchase common stock		13,751		10,044		12,736		8,683
Series B convertible preferred stock		165		166		165		173
Warrants to purchase common stock		21,515		22,356		21,931		24,774
		35,431		32,566		34,832		33,630