Net Loss per Share (Tables)

12 Months Ended

Dec. 31, 2018

Earnings Per Share [Abstract]

Computation of Basic and Diluted Net Loss per Share

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

	Year Ended December 31,
	2018			2017			2016
				As revised (Note 2)
Numerator
Net loss	$	(67,698	)	$	(57,010	)	$	(10,380	)
Denominator
Weighted average shares outstanding		38,466,233			33,098,571			28,104,991
Less: weighted average shares subject to repurchase		(79,327	)		(266,057	)		(629,199	)
Weighted average shares used to compute basic and diluted     net loss per share		38,386,906			32,832,514			27,475,792
Net loss per share, basic and diluted	$	(1.76	)	$	(1.74	)	$	(0.38	)

Summary of Potentially Dilutive Securities Excluded from Computation of Diluted Net Loss per Share

The following outstanding shares of potentially dilutive securities were excluded from the computation of diluted net loss per share for the periods presented because including them would have been antidilutive:

	As of December 31,
	2018		2017		2016
Common stock subject to repurchase		9,790		81,373		409,839
Options and awards issued and outstanding		3,864,407		2,964,549		2,141,868