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Select Balance Sheet Details - Accrued Expense (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Balance Sheet Related Disclosures [Abstract]    
Legal $ 670 $ 2,139
Accounting 859 928
Severance 357 297
Restructuring 1,350 9,170
Sales milestones 2,040 1,828
Accrued taxes 459 1,120
Deferred rent 980 1,163
Royalties 2,349 2,347
Commissions 5,412 6,180
Payroll and related 7,049 9,369
Litigation settlements 7,300 22,600
Accrued interest 878 416
Other 7,201 5,439
Total accrued expenses $ 36,904 $ 62,996