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Goodwill and Other Intangible Assets - Summary of Changes in Carrying Amount of Goodwill (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Oct. 07, 2017	Dec. 29, 2018	Dec. 30, 2017
Goodwill [Line Items]
Beginning Balance		$ 178,648	$ 322,686
Acquisitions (Note 2)		0	46,281
Disposals		0	(1,292)
Impairment	$ (189,027)	0	(189,027)
Ending Balance		178,648	178,648
Food Distribution [Member]
Goodwill [Line Items]
Beginning Balance		178,648	132,367
Acquisitions (Note 2)		0	46,281
Ending Balance		178,648	178,648
Retail [Member]
Goodwill [Line Items]
Beginning Balance			190,319
Disposals		0	(1,292)
Impairment	$ (189,000)	$ 0	$ (189,027)

X

- Definition

Goodwill disposed during period.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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