Net Income (Loss) per Share (Tables)

3 Months Ended

Mar. 31, 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 March 31,
(in thousands, except for per share amounts)	2012			2011
Numerator:
Net income (loss) — basic	$	84,594		$	(22,667	)
Add: interest and issuance costs related to convertible notes	1,500			—
Net income (loss) — diluted	86,094			(22,667		)
Denominator:
Weighted-average common shares outstanding	86,292			83,325
Less: unvested RSAs	(2,702		)	(2,471		)
Weighted-average common shares outstanding — basic	83,590			80,854
Dilutive effect of equity incentive plans and ESPP	1,822			—
Dilutive effect of convertible subordinated notes	6,668			—
Weighted-average common shares outstanding and dilutive potential common shares — diluted	92,080			80,854

Schedule of anti-dilutive shares

	Three Months Ended March 31,
(in thousands)	2012	2011
Shares issuable under Equity Incentive Plans and ESPP	4,641	6,673
Shares issuable upon the conversion of convertible debt	—	6,668
Total anti-dilutive securities	4,641	13,341