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Accrued Expenses (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Payables and Accruals [Abstract]    
Compensation $ 10,186 $ 8,995
Non-income taxes 6,831 7,095
Royalty tax withholdings 6,768 6,439
Payroll tax withholdings 4,476 426
Professional fees 2,428 902
Marketing expenses 542 237
Other expenses 7,895 6,602
Total accrued expenses $ 39,126 $ 30,696