Other Identifiable Intangible Assets Net - Reconciliation of Activity for Other Identifiable Intangible Assets (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jul. 02, 2017	Jul. 03, 2016
Finite Lived Intangible Assets [Line Items]
Total Other Identifiable Intangible Assets, Beginning Balance	$ 245,415	$ 136,448
Expansion Transactions	40,600	24,750
Measurement period adjustment and other distribution agreements		1,696
Conversion to distribution rights from franchise rights	533,040
Other distribution agreements	44
Additional accumulated amortization	(7,289)	(2,427)
Total Other Identifiable Intangible Assets, Ending Balance	811,810	160,467
Distribution Agreements [Member]
Finite Lived Intangible Assets [Line Items]
Total Other Identifiable Intangible Assets, Beginning Balance	234,988	129,786
Expansion Transactions	36,800	22,750
Measurement period adjustment and other distribution agreements		1,696
Conversion to distribution rights from franchise rights	533,040
Other distribution agreements	44
Additional accumulated amortization	(6,668)	(2,050)
Total Other Identifiable Intangible Assets, Ending Balance	798,204	152,182
Customer Lists and Other Identifiable Intangible Assets [Member]
Finite Lived Intangible Assets [Line Items]
Total Other Identifiable Intangible Assets, Beginning Balance	10,427	6,662
Expansion Transactions	3,800	2,000
Additional accumulated amortization	(621)	(377)
Total Other Identifiable Intangible Assets, Ending Balance	$ 13,606	$ 8,285