Accrued Expenses and Other Liabilities - Schedule of Accrued Expenses and Other Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Payables and Accruals [Abstract]
Accrued employee compensation	$ 39,738	$ 30,298
Operating lease obligations	7,857	9,202
Accrued interest	8,436	6,054
Accrued professional fees	9,199	5,837
Other accrued expenses	33,406	45,839
Total	$ 98,636	$ 97,230