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Commitments and Contingencies (Details 2) (USD $) | 12 Months Ended |  |  |  |  |  |  |  |
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2013 CRI | Jun. 03, 2011 CRI installment | Dec. 31, 2013 Imputed financing obligation | Dec. 31, 2013 Leases and other contractual obligations | Dec. 31, 2013 Software licenses | Dec. 31, 2013 Acquisition retention bonus | Dec. 31, 2013 Convertible notes | Dec. 31, 2013 Interest payments related to convertible notes | Dec. 31, 2013 Convertible notes | Dec. 31, 2012 Convertible notes | Dec. 31, 2013 Convertible notes 5% Convertible Senior Notes due 2014 | Dec. 31, 2012 Convertible notes 5% Convertible Senior Notes due 2014 | Jun. 29, 2009 Convertible notes 5% Convertible Senior Notes due 2014
Contractual obligations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of installments for payment of retention bonus |  |  |  |  |  |  | 3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Approximate installment amount of retention bonus |  |  |  |  |  |  | $ 16,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total | 398,090,000 | [1] |  |  |  |  |  | 40,260,000 | [1],[2] | 8,456,000 | [1] | 8,715,000 | [1],[3] | 18,083,000 | [1],[4] | 310,500,000 | [1] | 12,076,000 | [1] |  |  |  |  |
2014 | 211,482,000 | [1] |  |  |  |  |  | 5,874,000 | [1],[2] | 3,753,000 | [1] | 5,477,000 | [1],[3] | 18,013,000 | [1],[4] | 172,500,000 | [1] | 5,865,000 | [1] |  |  |  |  |
2015 | 12,606,000 | [1] |  |  |  |  |  | 6,010,000 | [1],[2] | 2,108,000 | [1] | 2,865,000 | [1],[3] | 70,000 | [1],[4] | 0 | [1] | 1,553,000 | [1] |  |  |  |  |
2016 | 9,319,000 | [1] |  |  |  |  |  | 6,156,000 | [1],[2] | 1,237,000 | [1] | 373,000 | [1],[3] | 0 | [1],[4] | 0 | [1] | 1,553,000 | [1] |  |  |  |  |
2017 | 8,873,000 | [1] |  |  |  |  |  | 6,302,000 | [1],[2] | 1,018,000 | [1] | 0 | [1],[3] | 0 | [1],[4] | 0 | [1] | 1,553,000 | [1] |  |  |  |  |
2018 | 146,339,000 | [1] |  |  |  |  |  | 6,447,000 | [1],[2] | 340,000 | [1] | 0 | [1],[3] |  | [1],[4] | 138,000,000 | [1] | 1,552,000 | [1] |  |  |  |  |
Thereafter | 9,471,000 | [1] |  |  |  |  |  | 9,471,000 | [1],[2] | 0 | [1] | 0 | [1],[3] | 0 | [1],[4] | 0 | [1] | 0 | [1] |  |  |  |  |
Face Value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 310,500,000 | 172,500,000 | 172,500,000 | 172,500,000 | 150,000,000
Unrecognized tax benefits | 18,794,000 |  | 16,773,000 | 16,610,000 | 11,816,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized tax benefits, reduction of long-term deferred tax assets, before federal tax benefit | 12,600,000 |  | 10,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized tax benefits included in long-term income taxes payable | 6,200,000 |  | 6,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Terms of noncancellable license agreement, minimum (in years) | 1 year |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Remaining retention bonus payable |  |  |  |  |  | 16,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rent expense | 3,100,000 |  | 4,100,000 | 2,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cumulative payments made by the Company on behalf of current and former officers | 32,200,000 |  | 32,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Settlement of claims |  |  |  | 10,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cumulative proceeds from insurance settlements | $ 12,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
[1] | The above table does not reflect possible payments in connection with uncertain tax benefits of approximately $18.8 million including $12.6 million recorded as a reduction of long-term deferred tax assets and $6.2 million in long-term income taxes payable, as of December 31, 2013. As noted below in Note 17, “Income Taxes,” although it is possible that some of the unrecognized tax benefits could be settled within the next 12 months, the Company cannot reasonably estimate the outcome at this time.
[2] | With respect to the imputed financing obligation, the main components of the difference between the amount reflected in the contractual obligations table and the amount reflected on the Consolidated Balance Sheets are the interest on the imputed financing obligation and the estimated common area expenses over the future periods. Additionally, the amount includes the amended Ohio lease and the amended Sunnyvale lease.
[3] | The Company has commitments with various software vendors for non-cancellable license agreements generally having terms longer than one year. The above table summarizes those contractual obligations as of December 31, 2013 which are also presented on the Company’s Consolidated Balance Sheet under current and other long-term liabilities.
[4] | In connection with acquisitions, the Company is obligated to pay retention bonuses to certain employees and contractors, subject to certain eligibility and acceleration provisions including the condition of employment. The remaining $16.9 million of CRI retention bonuses payable on June 3, 2014 will be paid in cash or stock at the Company’s election.

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