Goodwill and Other Intangible Assets, Net - Schedule of Other Intangible Assets, Net (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Total carrying value	$ 623,211	$ 545,963
Total accumulated amortization	(197,147)	(180,180)
Other intangible assets, net	426,064	365,783
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Total carrying value	407,612	371,270
Total accumulated amortization	(93,289)	(82,555)
Trade names & patents
Finite-Lived Intangible Assets [Line Items]
Total carrying value	37,817	30,679
Total accumulated amortization	(13,625)	(12,198)
Technological know-how
Finite-Lived Intangible Assets [Line Items]
Total carrying value	153,090	119,544
Total accumulated amortization	(71,404)	(68,292)
Other
Finite-Lived Intangible Assets [Line Items]
Total carrying value	24,692	24,470
Total accumulated amortization	$ (18,829)	$ (17,135)