Net Loss per Share (Tables)

6 Months Ended

Jun. 30, 2014

Schedule of Computation of Basic and Diluted Net Loss per Share

The following table presents the calculation of basic and diluted net loss per share for the periods presented (in thousands, except per share data):

	Three Months Ended June 30,						Six Months Ended June 30,
	2014			2013			2014			2013
Net loss	$	(21,743	)	$	(6,352	)	$	(32,003	)	$	(11,710	)
Less: Accretion of redeemable convertible preferred stock		(6	)		(12	)		(18	)		(24	)
Net loss attributable to common stockholders	$	(21,749	)	$	(6,364	)	$	(32,021	)	$	(11,734	)
Basic shares:
Weighted-average shares used to compute basic net loss per share		45,760			21,568			33,817			21,213
Diluted shares:
Weighted-average shares used to compute diluted net loss per share		45,760			21,568			33,817			21,213
Net loss per share attributable to common stockholders:
Basic and diluted	$	(0.48	)	$	(0.30	)	$	(0.95	)	$	(0.55	)

Schedule of Anti-Dilutive Securities Excluded from the Diluted per Share Calculation

The anti-dilutive securities excluded from the shares used to calculate the diluted net loss per share were as follows (in thousands):

	As of June 30,
	2014		2013
Redeemable convertible preferred stock		—		34,323
Shares subject to outstanding common stock options		14,355		9,375
Shares subject to common stock warrants		—		125
Restricted stock units		2,376		498
		16,731		44,321