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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. 03, 2020	Oct. 05, 2019	Oct. 03, 2020	Oct. 05, 2019	Dec. 28, 2019
Segment Reporting Information [Line Items]
Net sales	$ 2,060,816	$ 1,999,808	$ 7,101,373	$ 6,538,112
Merger/acquisition and integration				1,364
Restructuring charges (gains) and asset impairment	6,543	1,296	20,455	10,215
Depreciation and amortization	20,858	20,754	68,984	67,915
Operating earnings (loss)	28,998	15,779	85,000	45,358
Capital expenditures	15,271	15,134	45,880	46,905
Total Assets	2,321,559		2,321,559		$ 2,275,609
Discontinued Operations [Member]
Segment Reporting Information [Line Items]
Total Assets					3,090
Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	2,060,816	1,999,808	7,101,373	6,538,112
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales	247,968	227,633	845,988	742,677
Food Distribution [Member]
Segment Reporting Information [Line Items]
Net sales	1,012,204	939,047	3,471,561	3,043,668
Merger/acquisition and integration				(130)
Restructuring charges (gains) and asset impairment	6,538	1,043	19,222	10,724
Depreciation and amortization	7,413	7,793	24,934	25,770
Operating earnings (loss)	9,191	11,699	34,990	36,564
Capital expenditures	5,223	8,623	16,619	16,061
Total Assets	1,163,402		1,163,402		1,087,307
Food Distribution [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	1,012,204	939,047	3,471,561	3,043,668
Food Distribution [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales	247,968	227,633	845,988	742,677
Retail [Member]
Segment Reporting Information [Line Items]
Net sales	596,659	561,605	2,010,483	1,833,347
Merger/acquisition and integration				1,494
Restructuring charges (gains) and asset impairment	5	253	1,233	(509)
Depreciation and amortization	10,489	10,197	34,570	33,048
Operating earnings (loss)	22,318	6,726	59,416	14,600
Capital expenditures	9,302	4,872	24,492	26,792
Total Assets	755,235		755,235		794,413
Retail [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	596,659	561,605	2,010,483	1,833,347
Military [Member]
Segment Reporting Information [Line Items]
Net sales	451,953	499,156	1,619,329	1,661,097
Depreciation and amortization	2,956	2,764	9,480	9,097
Operating earnings (loss)	(2,511)	(2,646)	(9,406)	(5,806)
Capital expenditures	746	1,639	4,769	4,052
Total Assets	402,922		402,922		$ 390,799
Military [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	$ 451,953	$ 499,156	$ 1,619,329	$ 1,661,097

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