Net Loss per Common Share (Tables)

12 Months Ended

Dec. 31, 2019

Schedule of Basic and Diluted Net Loss Per Share

Basic and diluted net loss per share attributable to common stockholders was calculated as follows:


	Years ended December 31,
	2018		2019
Numerator:
Net loss	$	(7,288)	$	(7,830)
Dividend on convertible exchangeable preferred shares	$	(201)	$	(201)
Beneficial conversion feature of Series A convertible stock	$	—	$	—
Conversion of Series A convertible preferred stock	$	—	$	—
Net loss attributable to common shareholders	$	(7,489)	$	(8,031)
Denominator:
Weighted-average number of common shares used in loss per share – basic and diluted		12,094,131		16,321,746
Loss per share – basic and diluted	$	(0.62)	$	(0.49)

Schedule of Company's Potential Anti-dilutive Securities

The Company excluded the following potential common shares, presented based on amounts outstanding at each period end, from the computation of diluted net loss per share attributable to common stockholders for the periods indicated because including them would have had an anti-dilutive effect:


	December 31,	December 31,
	2018	2019
Stock options	831,611	2,005,561
Convertible preferred stock	1,698	1,698
Series A preferred stock	132,000	132,000
Common stock warrants	7,490,500	7,490,500
Total shares excluded from calculation	8,455,809	9,629,759