Net Loss Per Share (Tables)

3 Months Ended

Mar. 31, 2017

Earnings Per Share [Abstract]

Schedule of Outstanding Shares of Common Stock Equivalents Excluded from Calculation of Diluted Net Loss Per Share

The following outstanding shares of common stock equivalents were excluded from the calculation of diluted net loss per share for the periods presented because including them would have been antidilutive:

	As of March 31,
	2017		2016
Options to purchase common stock		7,615,052		4,153,460
Common stock subject to repurchase		—		7,614
Total potential dilutive shares		7,615,052		4,161,074