Net Loss per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Numerator:
Loss from continuing operations, net of tax	$ (21,271)	$ (9,454)	$ (57,604)	$ (21,739)
Loss from discontinued operations	0	(37,531)	(94,934)	(99,033)
Net loss	$ (21,271)	$ (46,985)	$ (152,538)	$ (120,772)
Denominator:
Weighted-average number of shares used to compute basic and diluted net loss per share	113,100	106,925	111,306	100,321
Basic and diluted net loss per share (in dollars per share)
Continuing operations, net of tax (in dollars per share)	$ (0.19)	$ (0.09)	$ (0.52)	$ (0.21)
Discontinued operations (in dollars per share)	$ 0.00	$ (0.35)	$ (0.85)	$ (0.99)
Basic and diluted net loss per share (in dollars per share)	$ (0.19)	$ (0.44)	$ (1.37)	$ (1.20)
Securities that could potentially dilute basic EPS in the future
Anti-dilutive securities (in shares)	20,653	16,511	20,100	22,841
Equity incentive plans and ESPP
Securities that could potentially dilute basic EPS in the future
Anti-dilutive securities (in shares)	6,771	3,590	6,218	4,161
Convertible subordinated notes
Securities that could potentially dilute basic EPS in the future
Anti-dilutive securities (in shares)	12,100	10,503	12,100	16,262
RSAs
Securities that could potentially dilute basic EPS in the future
Anti-dilutive securities (in shares)	1,782	2,418	1,782	2,418

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- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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No definition available.

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Amount of income (loss) from continuing operations attributable to the parent. Also defined as revenue less expenses and taxes from ongoing operations before extraordinary items but after deduction of those portions of income or loss from continuing operations that are allocable to noncontrolling interests.

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The amount of net income (loss) from continuing operations per each basic and diluted share of common stock or unit when the per share amount is the same for both basic and diluted shares.

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Amount of income (loss) from a disposal group, net of income tax before extraordinary items allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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Per basic and diluted share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation and gain (loss) from the disposal of the discontinued operation, when the per share amount is the same.

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS).

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