Net Loss per Share

12 Months Ended

Dec. 31, 2012

Net Loss per Share

Net Loss per Share

2. Net Loss per Share

        Basic net loss per share (basic EPS) is computed by dividing net loss by the weighted-average number of common shares outstanding during the period, less unvested RSAs subject to forfeiture. Diluted net loss per share (diluted EPS) is computed by dividing net loss by the weighted-average number of common shares outstanding during the period, less unvested RSAs subject to forfeiture, plus dilutive potential common shares. Diluted EPS is identical to basic EPS for all periods presented since potential common shares are excluded from the calculation, as their effect is anti-dilutive.

Weighted-Average Shares Outstanding

        The following table sets forth the computation of basic and diluted net loss and the weighted-average number of shares used in computing basic and diluted net loss per share:

	Year Ended December 31,
(in thousands, except for per share data)	2012			2011			2010
Basic and diluted:
Net loss	$	(18,542	)	$	(115,344	)	$	(83,862	)
Weighted-average shares of common stock outstanding		93,410			84,493			72,103
Less: unvested RSAs		(2,501	)		(2,442	)		(33	)
Weighted-average shares used in computing basic and diluted net loss per common share		90,909			82,051			72,070
Basic and diluted net loss per share	$	(0.20	)	$	(1.41	)	$	(1.16	)

Anti-dilutive Securities

        Securities that were not included in the computation of diluted EPS because their effect would have been anti-dilutive were as follows:

	Year Ended December 31,
(in thousands)	2012		2011		2010
Shares issuable under Equity Incentive Plans and ESPP		5,367		5,464		6,636
Shares issuable upon the conversion of convertible subordinated notes		6,668		6,668		6,668
Total anti-dilutive securities		12,035		12,132		13,304