Net Loss per Share (Tables)

12 Months Ended

Dec. 31, 2011

Net Loss per Share

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,
	2011			2010			2009
	(in thousands, except for per share data)
Basic and diluted:
Net loss	$	(115,344	)	$	(83,862	)	$	(85,302	)
Weighted-average shares of common stock outstanding		84,493			72,103			63,084
Less: unvested RSAs		(2,442	)		(33	)		(57	)
Weighted-average shares used in computing basic and diluted net loss per common share		82,051			72,070			63,027
Basic and diluted net loss per common share	$	(1.41	)	$	(1.16	)	$	(1.35	)

Schedule of anti-dilutive shares

	Year Ended December 31,
(in thousands)	2011		2010		2009
Shares issuable upon the exercise of stock options		4,610		5,823		6,646
Shares issuable under RSUs and RSAs		854		813		444
Shares issuable upon the conversion of convertible debt		6,668		6,668		6,668
Total anti-dilutive securities		12,132		13,304		13,758