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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. 30, 2017	Dec. 31, 2016
Goodwill [Line Items]
Beginning Balance		$ 322,686	$ 322,902
Acquisitions (Note 2)		46,281
Disposals		(1,292)
Impairment	$ (189,027)	(189,027)
Other			(216)
Ending Balance		178,648	322,686
Food Distribution [Member]
Goodwill [Line Items]
Beginning Balance		132,367	132,367
Acquisitions (Note 2)		46,281
Ending Balance		178,648	132,367
Retail [Member]
Goodwill [Line Items]
Beginning Balance		190,319	190,535
Disposals		(1,292)
Impairment	$ (189,000)	$ (189,027)
Other			(216)
Ending Balance			$ 190,319

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