Net Loss per Share (Tables)

6 Months Ended

Jun. 30, 2017

Net Income (Loss) per Share

Schedule of calculation of basic and diluted net loss per share

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2017		2016		2017		2016
Numerator:
Net loss	$	(1,464)	$	(286)	$	(4,345)	$	(77)
Accretion of redeemable convertible preferred stock		—		(604)		—		(202)
Net loss attributable to common stockholders, basic and diluted	$	(1,464)	$	(890)	$	(4,345)	$	(279)
Denominator (basic and diluted):
Weighted average shares of common stock outstanding, basic and diluted		16,506,585		4,860,758		16,373,413		4,765,977
Net loss per share attributable to common stockholders, basic and diluted	$	(0.09)	$	(0.18)	$	(0.27)	$	(0.06)

Schedule of shares excluded from the calculation of diluted net loss per share attributable to common stockholders

	Three Months Ended		Six Months Ended
	June 30,		June 30,
	2017	2016	2017	2016
Stock options to purchase common stock	2,957,302	2,724,783	2,957,302	2,724,783
Restricted stock	730,822	—	730,822	—
Common stock warrants	—	213,806	—	213,806
Preferred stock warrants (as converted to common stock)	—	463,589	—	463,589
Redeemable convertible preferred stock (as converted to common stock)	—	5,089,436	—	5,089,436
	3,688,124	8,491,614	3,688,124	8,491,614