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Accrued Expenses - Schedule of Accrued Expenses (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Accrued Liabilities And Other Liabilities [Abstract]    
Employee compensation and benefits $ 16,989 $ 21,453
Other 3,096 2,964
Total accrued expenses $ 20,085 $ 24,417