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Operating Segment Information - Schedule of Segment Reporting Information, by Operating Segment (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jul. 12, 2014	Jul. 20, 2013	Jul. 12, 2014	Jul. 20, 2013	Dec. 28, 2013
Segment Reporting Information [Line Items]
Merger transaction and integration expenses	$ 2,581	$ 2,377	$ 6,749	$ 2,377
Depreciation and amortization	19,417	9,492	46,970	22,218
Operating earnings	32,649	15,166	60,227	36,258
Capital expenditures	14,781	9,799	37,620	19,526
Total assets	1,989,234		1,989,234		1,999,063
Discontinued Operations [Member]
Segment Reporting Information [Line Items]
Total assets	4,705		4,705		4,767
Operating Segments [Member]
Segment Reporting Information [Line Items]
Inter-segment sales	1,810,175	651,125	4,143,902	1,431,403
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Inter-segment sales	(243,866)	(160,209)	(555,682)	(359,082)
Military [Member]
Segment Reporting Information [Line Items]
Merger transaction and integration expenses	24		24
Depreciation and amortization	1,486		5,679
Operating earnings	6,731		12,292
Capital expenditures	2,653		12,848
Total assets	483,482		483,482		451,556
Military [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Inter-segment sales	502,402		1,186,569
Food Distribution [Member]
Segment Reporting Information [Line Items]
Merger transaction and integration expenses	2,554	2,377	6,722	2,377
Depreciation and amortization	7,705	2,087	17,433	4,903
Operating earnings	11,128	6,765	25,489	26,086
Capital expenditures	3,423	2,562	9,990	5,469
Total assets	802,130		802,130		820,728
Food Distribution [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Inter-segment sales	767,926	271,890	1,738,928	608,596
Food Distribution [Member] \| Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Inter-segment sales	(243,866)	(160,209)	(555,682)	(359,082)
Retail [Member]
Segment Reporting Information [Line Items]
Merger transaction and integration expenses	3		3
Depreciation and amortization	10,226	7,405	23,858	17,315
Operating earnings	14,790	8,401	22,446	10,172
Capital expenditures	8,705	7,237	14,782	14,057
Total assets	698,917		698,917		722,012
Retail [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Inter-segment sales	$ 539,847	$ 379,235	$ 1,218,405	$ 822,807