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Select Balance Sheet Details - Accrued Expense (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Balance Sheet Related Disclosures [Abstract]    
Legal $ 570 $ 2,139
Accounting 949 928
Severance 459 297
Restructuring 730 9,170
Sales milestones 96 1,828
Accrued taxes 811 1,120
Deferred rent 884 1,163
Royalties 2,443 2,347
Commissions 5,275 6,180
Payroll and related 8,013 9,369
Litigation settlements 8,386 22,600
Accrued interest 887 416
Other 5,492 5,439
Total accrued expenses $ 34,995 $ 62,996