Goodwill and Other Intangible Assets, Net - Components of Other Intangible Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Intangible Assets by Major Class [Line Items]
Definite-lived intangibles, gross amount	$ 464,228	$ 472,268
Intangibles, gross amount	496,368	504,408
Definite-lived intangibles, accumulated amortization	(112,920)	(87,320)
Trade names [Member]
Intangible Assets by Major Class [Line Items]
Indefinite-lived intangibles, gross amount	32,140	32,140
Customer relationships [Member]
Intangible Assets by Major Class [Line Items]
Definite-lived intangibles, gross amount	423,513	430,730
Definite-lived intangibles, accumulated amortization	(94,889)	(74,469)
Other definite-lived intangibles [Member]
Intangible Assets by Major Class [Line Items]
Definite-lived intangibles, gross amount	40,715	41,538
Definite-lived intangibles, accumulated amortization	$ (18,031)	$ (12,851)