Note 3 - 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	$	(9,623	)	$	(8,636	)
Net loss allocated to stockholders of the Company	$	(9,657	)	$	(8,619	)
Denominator:
Weighted-average shares of common stock outstanding used in computing net loss per share, basic		5,218			4,265
Weighted-average shares of common stock outstanding used in computing net loss per share, diluted		5,218			4,265
Net loss per share:
Basic	$	(1.85	)	$	(2.02	)
Diluted	$	(1.85	)	$	(2.02	)

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

	March 31, 2023		March 31, 2022
Options to purchase common stock and restricted stock units ("RSUs")		1,012,456		525,247
Preferred stock		2,123,333		252,717
Shares reserved for convertible notes		547,592		547,592
Warrants for common stock		1,061,924		1,061,924
Total potential dilutive shares		4,745,305		2,387,480