Intangible Assets, Net - Schedule of Intangible Assets, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Finite-lived intangible assets:
Total finite-lived intangible assets	$ 275,230	$ 274,661
Accumulated amortization:
Total accumulated amortization	(198,642)	(170,236)
Total finite-lived intangible assets, net	76,588	104,425
Trade name (indefinite-lived)	31,646	31,646
Total intangible assets, net	108,234	136,071
Backlog
Finite-lived intangible assets:
Total finite-lived intangible assets	72,630	72,630
Accumulated amortization:
Total accumulated amortization	(72,630)	(72,630)
Customer Relationships
Finite-lived intangible assets:
Total finite-lived intangible assets	145,051	145,051
Accumulated amortization:
Total accumulated amortization	(86,063)	(66,267)
Developed Technologies
Finite-lived intangible assets:
Total finite-lived intangible assets	54,475	54,475
Accumulated amortization:
Total accumulated amortization	(38,133)	(29,961)
Other
Finite-lived intangible assets:
Total finite-lived intangible assets	3,074	2,505
Accumulated amortization:
Total accumulated amortization	$ (1,816)	$ (1,378)