Distribution Agreements, Net - Other Identifiable Intangible Assets Net (Detail) - Distribution Agreements [Member] - USD ($) $ in Thousands	Apr. 01, 2018	Dec. 31, 2017	Apr. 02, 2017	Jan. 01, 2017
Finite Lived Intangible Assets [Line Items]
Distribution agreements at cost	$ 939,527	$ 939,527
Less: Accumulated amortization	(32,127)	(26,175)
Total other identifiable intangible assets, net	$ 907,400	$ 913,352	$ 794,562	$ 234,988

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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