Net Income (Loss) per Share (Tables)

9 Months Ended

Sep. 30, 2012

Net Income (Loss) per Share

Computation of basic and diluted net income (loss) and the weighted-average number of shares used in computing basic and diluted net income (loss) per share

	Three Months Ended September 30,						Nine Months Ended September 30,
(in thousands, except for per share amounts)	2012			2011			2012			2011
Numerator:
Net income (loss) — basic	$	(34,692	)	$	(30,626	)	$	12,782		$	(78,337	)
Add: interest and issuance costs related to convertible notes	—			—			4,503			—
Net income (loss) — diluted	$	(34,692	)	$	(30,626	)	$	17,285		$	(78,337	)
Denominator:
Weighted-average common shares outstanding	97,590			84,951			91,834			84,238
Less: unvested RSAs	(2,563		)	(2,461		)	(2,563		)	(2,461		)
Weighted-average common shares outstanding — basic	95,027			82,490			89,271			81,777
Effect of dilutive equity incentive plans and ESPP	—			—			2,442			—
Effect of dilutive convertible subordinated notes	—			—			6,668			—
Weighted-average common shares outstanding —diluted	95,027			82,490			98,381			81,777

Schedule of anti-dilutive shares

	Three Months Ended September 30,		Nine Months Ended September 30,
(in thousands)	2012	2011	2012	2011
Shares issuable under Equity Incentive Plans and ESPP	5,098	6,744	2,915	6,205
Shares issuable upon the conversion of convertible subordinated notes	6,668	6,668	—	6,668
Total anti-dilutive securities	11,766	13,412	2,915	12,873