For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13531-108611

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
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-Subparagraph (a)
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Effect of Largest Customer in Sales (Detail) - Total year to date sales - Customer Concentration Risk	3 Months Ended		9 Months Ended
	Oct. 06, 2018	Oct. 07, 2017	Oct. 06, 2018	Oct. 07, 2017
DSD Segment
Entity Wide Revenue Major Customer [Line Items]
Concentration risk percentage			84.00%
Warehouse Segment
Entity Wide Revenue Major Customer [Line Items]
Concentration risk percentage			16.00%
Wal-Mart/Sam's Club
Entity Wide Revenue Major Customer [Line Items]
Concentration risk percentage	20.20%	20.20%	20.30%	20.20%
Wal-Mart/Sam's Club \| DSD Segment
Entity Wide Revenue Major Customer [Line Items]
Concentration risk percentage	17.80%	17.60%	17.90%	17.70%
Wal-Mart/Sam's Club \| Warehouse Segment
Entity Wide Revenue Major Customer [Line Items]
Concentration risk percentage	2.40%	2.60%	2.40%	2.50%