Goodwill and Other Intangible Assets - Information About Expected Amortization of Definite-Lived Intangible Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
2017	$ 33,343
2018	32,938
2019	32,607
2020	20,254
2021	17,423
Thereafter	153,613
Net	290,178	$ 324,295
Services cost of revenue [Member}
Finite-Lived Intangible Assets [Line Items]
2017	188
2018	94
2019	0
2020	0
2021	0
Thereafter	0
Net	282
Amortization of other acquired intangible assets [Member]
Finite-Lived Intangible Assets [Line Items]
2017	33,155
2018	32,844
2019	32,607
2020	20,254
2021	17,423
Thereafter	153,613
Net	$ 289,896