Net Loss Per Share Available to Common Stockholders (Tables)

9 Months Ended

Sep. 30, 2016

Calculation of Basic and Diluted Net Loss Per Share

The following table presents the calculation of basic and diluted net loss per share:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2016			2015			2016			2015
Numerator:
Net loss available to common stockholders	$	(3,053	)	$	(9,504	)	$	(11,884	)	$	(31,211	)
Denominator:
Weighted average number of shares, basic and diluted		38,520			36,953			38,190			36,367
Net loss per share available to common stockholders
Basic and diluted net loss per common share available to common stockholders	$	(0.08	)	$	(0.26	)	$	(0.31	)	$	(0.86	)

Potential Common Shares Outstanding

The following table presents the potential shares of common stock outstanding that were excluded from the computation of diluted net loss per share available to common stockholders for the periods presented because including them would have been anti-dilutive:

	Three and Nine Months Ended September 30,
	2016		2015
Options to purchase common stock		4,886		6,400
Restricted stock units		1,565		1,334
Restricted common stock issued		2		239
Common stock subject to repurchase		5		25
Total		6,458		7,998