Accrued Expenses and Other Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Payables and Accruals [Abstract]
Accrued employee compensation	$ 27,267	$ 28,698
Operating lease obligations	9,056	9,202
Accrued interest	6,927	6,054
Accrued professional fees	4,508	5,837
Other accrued expenses	45,035	47,439
Accrued expenses and other liabilities	$ 92,793	$ 97,230