Reporting Segment Information - Schedule of Segment Reporting Information, by Operating Segment (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jul. 15, 2017	Jul. 16, 2016	Jul. 15, 2017	Jul. 16, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
Net sales	$ 1,894,709	$ 1,827,562	$ 4,297,213	$ 4,106,332
Merger/acquisition and integration	622	913	4,638	1,810
Depreciation and amortization	18,264	17,635	43,686	41,004
Operating earnings	38,942	32,620	68,586	54,280
Capital expenditures	18,313	23,246	37,789	41,336
Total Assets	2,198,535		2,198,535		$ 1,930,336
Discontinued Operations [Member]
Segment Reporting Information [Line Items]
Total Assets	3,248		3,248		3,249
Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	1,894,709	1,827,562	4,297,213	4,106,332
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales	(209,435)	(220,146)	(476,763)	(497,149)
Food Distribution [Member]
Segment Reporting Information [Line Items]
Merger/acquisition and integration	468	93	4,315	561
Depreciation and amortization	6,073	4,827	15,016	11,297
Operating earnings	23,204	19,227	48,518	45,083
Capital expenditures	8,275	4,673	14,029	10,195
Total Assets	1,071,156		1,071,156		776,725
Food Distribution [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	941,636	820,328	2,104,586	1,811,465
Food Distribution [Member] \| Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales	(209,435)	(220,146)	(476,763)	(497,149)
Military [Member]
Segment Reporting Information [Line Items]
Merger/acquisition and integration				1
Depreciation and amortization	2,607	2,682	6,046	6,157
Operating earnings	2,509	2,497	3,399	5,930
Capital expenditures	1,603	712	4,054	3,047
Total Assets	408,054		408,054		395,737
Military [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	471,077	505,418	1,114,390	1,179,941
Retail [Member]
Segment Reporting Information [Line Items]
Merger/acquisition and integration	154	820	323	1,248
Depreciation and amortization	9,584	10,126	22,624	23,550
Operating earnings	13,229	10,896	16,669	3,267
Capital expenditures	8,435	17,861	19,706	28,094
Total Assets	716,077		716,077		$ 754,625
Retail [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	$ 481,996	$ 501,816	$ 1,078,237	$ 1,114,926

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(12))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(11))
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Costs incurred to effect a business combination which have been expensed during the period. Such costs could include business integration costs, systems integration and conversion costs, and severance and other employee-related costs.

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The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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