Intangbile assets (Details) - USD ($) $ in Thousands	Jan. 02, 2016	Jan. 03, 2015
Intangible Assets [Line Items]
Indefinite Lived Intangible Assets	$ 52,466	$ 120,330
Finite Lived Intangible Assets:	982,602	996,992
Accumulated Amortization:	(252,719)	(184,909)
Total Intangible assets, less accumulated amortization	782,349	932,413
Trade Names [Member]
Intangible Assets [Line Items]
Indefinite Lived Intangible Assets	52,466	120,330
Routes [Member]
Intangible Assets [Line Items]
Finite Lived Intangible Assets:	390,888	437,816
Accumulated Amortization:	(99,819)	(75,308)
Permits [Member]
Intangible Assets [Line Items]
Finite Lived Intangible Assets:	494,754	523,398
Accumulated Amortization:	(134,752)	(101,010)
Non-compete agreements [Member]
Intangible Assets [Line Items]
Finite Lived Intangible Assets:	6,996	7,583
Accumulated Amortization:	(4,628)	(3,595)
Trade Names [Member]
Intangible Assets [Line Items]
Finite Lived Intangible Assets:	75,825	11,983
Accumulated Amortization:	(11,959)	(3,420)
Royalty, consulting land use and leasehold [Member]
Intangible Assets [Line Items]
Finite Lived Intangible Assets:	14,139	16,212
Accumulated Amortization:	$ (1,561)	$ (1,576)