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Sales by Product Category in Each Reportable Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 14, 2018	Jul. 15, 2017	Jul. 14, 2018	Jul. 15, 2017
Segment Reporting Information [Line Items]
Sales	$ 941,283	$ 926,639	$ 2,147,736	$ 2,114,288
DSD Segment
Segment Reporting Information [Line Items]
Sales	796,626	792,892	1,812,110	1,792,752
Warehouse Segment
Segment Reporting Information [Line Items]
Sales	144,657	133,747	335,626	321,536
Branded Retail
Segment Reporting Information [Line Items]
Sales	557,718	549,589	1,269,026	1,244,647
Branded Retail | DSD Segment
Segment Reporting Information [Line Items]
Sales	521,946	514,617	1,185,740	1,160,558
Branded Retail | Warehouse Segment
Segment Reporting Information [Line Items]
Sales	35,772	34,972	83,286	84,089
Store Branded Retail
Segment Reporting Information [Line Items]
Sales	149,565	144,438	322,168	316,662
Store Branded Retail | DSD Segment
Segment Reporting Information [Line Items]
Sales	121,507	119,972	258,217	257,505
Store Branded Retail | Warehouse Segment
Segment Reporting Information [Line Items]
Sales	28,058	24,466	63,951	59,157
Non-Retail and Other
Segment Reporting Information [Line Items]
Sales	234,000	232,612	556,542	552,979
Non-Retail and Other | DSD Segment
Segment Reporting Information [Line Items]
Sales	153,173	158,303	368,153	374,689
Non-Retail and Other | Warehouse Segment
Segment Reporting Information [Line Items]
Sales	$ 80,827	$ 74,309	$ 188,389	$ 178,290

X

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130543-203045

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 1
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045

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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.

+ References

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