Net Loss Per Common Share (Tables)

9 Months Ended

Sep. 30, 2017

Earnings Per Share [Abstract]

Computation of Basic and Diluted Net Loss per Share Attributable to Common Stockholders

The following table sets forth the computation of the basic and diluted net loss per share attributable to common stockholders (in thousands, except share and per share data): 

	Three Months Ended September 30,						Nine Months Ended September 30,
	2017			2016			2017			2016
Numerator:
Net loss	$	(6,524	)	$	(4,075	)	$	(18,271	)	$	(14,637	)
Denominator:
Weighted-average shares used to compute net loss per    common share, basic and diluted		22,811,907			1,454,307			22,446,399			1,434,583
Net loss per common share, basic and diluted	$	(0.29	)	$	(2.80	)	$	(0.81	)	$	(10.20	)

Schedule of Anti-dilutive Securities Excluded from Diluted Net Loss per Common Share

The following outstanding shares of potentially dilutive securities have been excluded from diluted net loss per common share for the three and nine months ended September 30, 2017 and 2016, because their inclusion would be anti-dilutive:  

	As of September 30,
	2017		2016
Convertible preferred stock on an as-if converted basis		—		13,343,981
Options to purchase common stock		2,765,902		2,732,538
RSUs issued and unvested		453,063		—
Warrants to purchase convertible preferred stock on an    as-if converted basis		—		328,114
Warrants to purchase common stock		127,918		—
Total		3,346,883		16,404,633