Other Identifiable Intangible Assets - Other Identifiable Intangible Assets (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 28, 2015	Dec. 28, 2014	Jun. 29, 2014
Finite Lived Intangible Assets [Line Items]
Total other identifiable intangible assets, at cost	$ 112,397	$ 62,347	$ 22,347
Less: Accumulated amortization	6,579	5,199	5,064
Other identifiable intangible assets, net	105,818	57,148	17,283
Distribution Agreements [Member]
Finite Lived Intangible Assets [Line Items]
Total other identifiable intangible assets, at cost	$ 102,209	54,909	15,509
Distribution Agreements [Member] | Minimum [Member]
Finite Lived Intangible Assets [Line Items]
Estimated useful life	20 years
Distribution Agreements [Member] | Maximum [Member]
Finite Lived Intangible Assets [Line Items]
Estimated useful life	40 years
Customer Lists and Other Identifiable Intangible Assets [Member]
Finite Lived Intangible Assets [Line Items]
Total other identifiable intangible assets, at cost	$ 10,188	$ 7,438	$ 6,838
Customer Lists and Other Identifiable Intangible Assets [Member] | Minimum [Member]
Finite Lived Intangible Assets [Line Items]
Estimated useful life	12 years
Customer Lists and Other Identifiable Intangible Assets [Member] | Maximum [Member]
Finite Lived Intangible Assets [Line Items]
Estimated useful life	20 years