Net Loss Per Share

9 Months Ended

Sep. 30, 2013

Earnings Per Share [Abstract]

Net Loss Per Share

Net Loss Per Share

Basic earnings per share (“EPS”) is calculated by dividing the net income or loss available to common stockholders by the weighted average number of common shares outstanding for the period, without consideration for common stock equivalents. Diluted EPS is computed by dividing the net income available to common stockholders by the weighted average number of common shares outstanding for the period and the weighted average number of dilutive common stock equivalents outstanding for the period determined using the treasury-stock method. For purposes of this calculation, common stock subject to repurchase by the Company and options are considered to be common stock equivalents and are only included in the calculation of diluted earnings per share when their effect is dilutive (in thousands, except per share data):

	Three Months Ended   September 30,						Nine Months Ended   September 30,
	2013			2012			2013			2012
Numerator:
Net loss	$	(14,510	)	$	(2,469	)	$	(21,820	)	$	(10,104	)
Denominator:
Weighted average common shares outstanding	97,318			90,216			96,940			89,812
Weighted average unvested common shares subject to repurchase	(937		)	(713		)	(894		)	(590		)
Weighted average common shares outstanding—basic	96,381			89,503			96,046			89,222
Effect of dilutive securities:
Options, warrants and restricted share awards	—			—			—			—
Weighted average common shares outstanding—diluted	96,381			89,503			96,046			89,222
Net loss per common share:
Basic and diluted net loss per share	$	(0.15	)	$	(0.03	)	$	(0.23	)	$	(0.11	)

The weighted-average anti-dilutive securities not included in diluted net loss per share were as follows (in thousands):

	Three Months Ended   September 30,		Nine Months Ended   September 30,
	2013	2012	2013	2012
Options to purchase common stock	2,383	4,754	4,355	4,773
Unvested restricted share awards	937	713	894	590
Total	3,320	5,467	5,249	5,363