Intangible Assets, Net - Schedule of Estimated Amortization Expense of Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Remainder of 2018	$ 22,170
2019	14,829
2020	7,876
2021	5,114
2022	3,353
Later years	6,361
Total finite-lived intangible assets, net	$ 59,703	$ 67,094