Intangbile assets (Details) (USD $) In Thousands, unless otherwise specified	Jan. 03, 2015	Dec. 28, 2013
Intangible Assets [Line Items]
Indefinite Lived Intangible Assets	$ 120,330	$ 92,002
Finite Lived Intangible Assets	996,992	601,732
Accumulated Amortization	(184,909)	(105,070)
Total Intangible assets, less accumulated amortization	932,413	588,664
Trade Names [Member]
Intangible Assets [Line Items]
Indefinite Lived Intangible Assets	120,330	92,002
Routes [Member]
Intangible Assets [Line Items]
Finite Lived Intangible Assets	437,816	259,326
Accumulated Amortization	(75,308)	(38,231)
Permits [Member]
Intangible Assets [Line Items]
Finite Lived Intangible Assets	523,398	321,763
Accumulated Amortization	(101,010)	(63,145)
Non-compete agreements [Member]
Intangible Assets [Line Items]
Finite Lived Intangible Assets	7,583	7,218
Accumulated Amortization	(3,595)	(2,352)
Trade Names [Member]
Intangible Assets [Line Items]
Finite Lived Intangible Assets	11,983	12,698
Accumulated Amortization	(3,420)	(724)
Royalty, consulting land use and leasehold [Member]
Intangible Assets [Line Items]
Finite Lived Intangible Assets	16,212	727
Accumulated Amortization	$ (1,576)	$ (618)