Net Loss per Share (Tables)

3 Months Ended

Mar. 31, 2014

Net Loss per Share

Computations for basic and diluted net loss per share

	Three Months Ended March 31,
(In thousands, except per share data)	2014			2013
Numerator:
Net loss	$	(67,703	)	$	(37,360	)
Denominator:
Weighted-average shares of stock outstanding	112,052			99,181
Less: unvested RSAs	(2,193		)	(2,802		)
Weighted-average shares used to compute basic and diluted net loss per share	109,859			96,379
Net loss per share:
Basic and diluted net loss per share	$	(0.62	)	$	(0.39	)

Schedule of anti-dilutive securities

	Three Months Ended March 31,
(In thousands)	2014	2013
Shares issuable under equity incentive plans and ESPP	3,211	5,469
Shares issuable upon the conversion of convertible subordinated notes	2,780	14,256
Total anti-dilutive securities	5,991	19,725