Net Loss Per Share (Tables)

3 Months Ended

Mar. 31, 2016

Earnings Per Share [Abstract]

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

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

	Three Months Ended March 31,
	2016		2015
Options to purchase common stock		4,153,460		2,462,631
Common stock subject to repurchase		7,614		116,674
Convertible preferred stock		—		252,817
Redeemable convertible preferred stock		—		17,236,784
Warrants to purchase preferred stock		—		976,492
Total potential dilutive shares		4,161,074		21,045,398