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Acquisitions - Additional Information (Detail) $ in Thousands	Jul. 18, 2015 USD ($)	Jun. 16, 2015 USD ($) Store	Jun. 02, 2015 USD ($) Store	Jan. 03, 2015 USD ($)
Business Acquisition [Line Items]
Goodwill	$ 331,523			$ 297,280
Dan's [Member]
Business Acquisition [Line Items]
Total purchase price of assets		$ 32,600
Amount of inventory included in total purchase price		$ 3,800
Number of stores acquired | Store		6
Dan's [Member] | Retail Segment [Member]
Business Acquisition [Line Items]
Goodwill		$ 24,500
Dan's [Member] | Food Distribution Segment [Member]
Business Acquisition [Line Items]
Goodwill		$ 1,000
Bo Super Market Inc
Business Acquisition [Line Items]
Number of stores acquired | Store			12
Bo Super Market Inc | Food Distribution Segment [Member]
Business Acquisition [Line Items]
Goodwill			$ 8,700

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The amount of inventory recognized as of the acquisition date.

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Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

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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.

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