Other Liabilities and Accrued Expenses - Table of Other Liabilities and Accrued Expenses (Details) - USD ($) $ in Thousands	Mar. 31, 2019		Jan. 01, 2019	Dec. 31, 2018
Other Liabilities Disclosure [Abstract]
Accounts payable and accrued expenses	$ 70,822			$ 63,755
Operating lease liability(1)	31,473	[1]	$ 33,558	0
Deferred tax liabilities, net	26,864			25,433
Commissions payable	9,602			11,076
Accrued interest payable	5,111			3,452
Other	19,352			20,474
Total other liabilities and accrued expenses	$ 163,224			$ 124,190

[1] See Note (2) Summary of Significant Accounting Policies and Note (20) Commitments and Contingencies for additional information.