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Other Identifiable Intangible Assets - Other Identifiable Intangible Assets (Detail) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 27, 2015
Dec. 28, 2014
Sep. 28, 2014
Finite Lived Intangible Assets [Line Items]      
Total other identifiable intangible assets, at cost $ 109,397 $ 62,347 $ 22,347
Less: Accumulated amortization 7,309 5,199 5,243
Other identifiable intangible assets, net 102,088 57,148 17,104
Distribution Agreements [Member]      
Finite Lived Intangible Assets [Line Items]      
Total other identifiable intangible assets, at cost $ 99,209 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