Goodwill - Summary of Changes in Carrying Amount of Goodwill (Detail) $ in Thousands	4 Months Ended
Apr. 22, 2017 USD ($)
Goodwill [Line Items]
Balance at December 31, 2016	$ 322,686
Acquisitions (Note 3)	44,982
Other	(171)
Balance at April 22, 2017	367,497
Food Distribution [Member]
Goodwill [Line Items]
Balance at December 31, 2016	132,367
Acquisitions (Note 3)	44,982
Balance at April 22, 2017	177,349
Retail [Member]
Goodwill [Line Items]
Balance at December 31, 2016	190,319
Other	(171)
Balance at April 22, 2017	$ 190,148

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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=64834752&loc=SL49117168-202975

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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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