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Intangbile assets (Details) - USD ($) $ in Thousands	Jan. 01, 2022	Jan. 02, 2021
Intangible Assets [Line Items]
Indefinite Lived Intangible Assets	$ 53,133	$ 55,349
Finite Lived Intangible Assets:	905,138	986,417
Accumulated Amortization:	(560,470)	(568,086)
Total Intangible assets, less accumulated amortization	397,801	473,680
Trade Names [Member]
Intangible Assets [Line Items]
Indefinite Lived Intangible Assets	53,133	55,349
Routes [Member]
Intangible Assets [Line Items]
Finite Lived Intangible Assets:	337,399	397,342
Accumulated Amortization:	(169,984)	(203,392)
Permits [Member]
Intangible Assets [Line Items]
Finite Lived Intangible Assets:	475,520	494,191
Accumulated Amortization:	(336,020)	(315,246)
Non-compete agreements [Member]
Intangible Assets [Line Items]
Finite Lived Intangible Assets:	645	3,300
Accumulated Amortization:	(441)	(2,981)
Trade Names [Member]
Intangible Assets [Line Items]
Finite Lived Intangible Assets:	65,675	65,675
Accumulated Amortization:	(46,028)	(39,491)
Royalty, consulting land use and leasehold [Member]
Intangible Assets [Line Items]
Finite Lived Intangible Assets:	25,899	25,909
Accumulated Amortization:	$ (7,997)	$ (6,976)

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Intangible Assets [Line Items]

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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-Publisher FASB
-Name Accounting Standards Codification
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Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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