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Reporting Segment Information - Schedule of Segment Reporting Information, by Operating Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 05, 2019	Oct. 06, 2018	Oct. 05, 2019	Oct. 06, 2018	Dec. 29, 2018
Segment Reporting Information [Line Items]
Net sales	$ 1,999,808	$ 1,886,730	$ 6,538,112	$ 6,167,756
Merger/acquisition and integration		521	1,364	3,531
Restructuring charges (gains) and asset impairment	1,296	232	10,215	5,269
Depreciation and amortization	20,754	19,247	67,915	63,491
Operating earnings (loss)	15,779	26,806	45,358	82,372
Capital expenditures	15,134	18,004	46,905	52,600
Total Assets	2,334,546		2,334,546		$ 1,971,912
Discontinued Operations [Member]
Segment Reporting Information [Line Items]
Total Assets	3,090		3,090		3,151
Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	1,999,808	1,886,730	6,538,112	6,167,756
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales	(227,633)	(195,451)	(742,677)	(647,163)
Food Distribution [Member]
Segment Reporting Information [Line Items]
Net sales	939,047	940,183	3,043,668	3,037,096
Merger/acquisition and integration		479	(130)	3,419
Restructuring charges (gains) and asset impairment	1,043	(68)	10,724	1,292
Depreciation and amortization	7,793	7,540	25,770	24,398
Operating earnings (loss)	11,699	19,815	36,564	63,060
Capital expenditures	8,623	7,840	16,061	26,250
Total Assets	1,137,162		1,137,162		1,074,125
Food Distribution [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	939,047	940,183	3,043,668	3,037,096
Food Distribution [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales	(227,633)	(195,451)	(742,677)	(647,163)
Military [Member]
Segment Reporting Information [Line Items]
Net sales	499,156	500,222	1,661,097	1,653,496
Merger/acquisition and integration				4
Restructuring charges (gains) and asset impairment		29		(801)
Depreciation and amortization	2,764	2,816	9,097	9,257
Operating earnings (loss)	(2,646)	1,508	(5,806)	6,120
Capital expenditures	1,639	950	4,052	2,479
Total Assets	424,983		424,983		405,587
Military [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	499,156	500,222	1,661,097	1,653,496
Retail [Member]
Segment Reporting Information [Line Items]
Net sales	561,605	446,325	1,833,347	1,477,164
Merger/acquisition and integration		42	1,494	108
Restructuring charges (gains) and asset impairment	253	271	(509)	4,778
Depreciation and amortization	10,197	8,891	33,048	29,836
Operating earnings (loss)	6,726	5,483	14,600	13,192
Capital expenditures	4,872	9,214	26,792	23,871
Total Assets	769,311		769,311		$ 489,049
Retail [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	$ 561,605	$ 446,325	$ 1,833,347	$ 1,477,164

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