Other Identifiable Intangible Assets - Reconciliation of Activity for Other Identifiable Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jan. 01, 2017	Jan. 03, 2016	Dec. 28, 2014
Finite Lived Intangible Assets [Line Items]
Total Other Identifiable Intangible Assets, Beginning Balance	$ 136,448	$ 57,148
Expansion Territories	91,250	84,100
Glacéau Distribution Agreement	21,032
Asset Exchange Transaction		1,000
Measurement period adjustment and other distribution agreements	1,695	(3,000)
Accumulated amortization	(5,010)	(2,800)	$ (733)
Total Other Identifiable Intangible Assets, Ending Balance	245,415	136,448	57,148
Distribution Agreements [Member]
Finite Lived Intangible Assets [Line Items]
Total Other Identifiable Intangible Assets, Beginning Balance	129,786	53,841
Expansion Territories	86,650	81,000
Glacéau Distribution Agreement	21,032
Asset Exchange Transaction		200
Measurement period adjustment and other distribution agreements	1,695	(3,000)
Accumulated amortization	(4,175)	(2,255)
Total Other Identifiable Intangible Assets, Ending Balance	234,988	129,786	53,841
Customer Lists and Other Identifiable Intangible Assets [Member]
Finite Lived Intangible Assets [Line Items]
Total Other Identifiable Intangible Assets, Beginning Balance	6,662	3,307
Expansion Territories	4,600	3,100
Asset Exchange Transaction		800
Accumulated amortization	(835)	(545)
Total Other Identifiable Intangible Assets, Ending Balance	$ 10,427	$ 6,662	$ 3,307