Other Identifiable Intangible Assets - Additional Information (Detail) - USD ($)	12 Months Ended
	Jan. 03, 2016	Dec. 28, 2014	Dec. 29, 2013	May. 01, 2015
Finite Lived Intangible Assets [Line Items]
Amortization of intangibles	$ 2,800,000	$ 733,000	$ 333,000
Impairment of finite-lived identifiable intangible assets	0
Amortization expense for 2016	4,100,000
Amortization expense for 2017	4,100,000
Amortization expense for 2018	4,100,000
Amortization expense for 2019	4,100,000
Amortization expense for 2020	4,100,000
Distribution Agreements [Member] | 2015 Expansion [Member]
Finite Lived Intangible Assets [Line Items]
Additions to other identifiable intangible related to acquisition	81,000,000
Decrease due to measurement period adjustments	(14,000,000)
Distribution Agreements [Member] | 2014 Expansion [Member]
Finite Lived Intangible Assets [Line Items]
Additions to other identifiable intangible related to acquisition		52,600,000
Decrease due to measurement period adjustments	(3,000,000)
Customer Lists and Other Identifiable Intangible Assets [Member] | 2015 Expansion [Member]
Finite Lived Intangible Assets [Line Items]
Additions to other identifiable intangible related to acquisition	3,100,000
Customer Lists and Other Identifiable Intangible Assets [Member] | 2014 Expansion [Member]
Finite Lived Intangible Assets [Line Items]
Additions to other identifiable intangible related to acquisition		$ 1,600,000
Lexington Expansion [Member]
Finite Lived Intangible Assets [Line Items]
Additions to other identifiable intangible related to acquisition				$ 1,000,000
Lexington Expansion [Member] | Distribution Agreements [Member]
Finite Lived Intangible Assets [Line Items]
Additions to other identifiable intangible related to acquisition	200,000			$ 200,000
Lexington Expansion [Member] | Customer Lists and Other Identifiable Intangible Assets [Member]
Finite Lived Intangible Assets [Line Items]
Additions to other identifiable intangible related to acquisition	$ 800,000