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Associate Retirement Plans - Summary of Actual Assets Allocation (Detail)	12 Months Ended
	Jan. 02, 2016	Jan. 03, 2015
Defined Benefit Plan Disclosure [Line Items]
Target	100.00%
Plan Assets	100.00%
Cash Balance Pension Plan and Super Foods Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan Assets		100.00%
Equity securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target	20.00%
Plan Assets	30.60%
Equity securities [Member] | Cash Balance Pension Plan and Super Foods Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan Assets		30.90%
Fixed income [Member]
Defined Benefit Plan Disclosure [Line Items]
Target	80.00%
Plan Assets	68.50%
Fixed income [Member] | Cash Balance Pension Plan and Super Foods Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan Assets		68.70%
Cash equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan Assets	0.90%
Cash equivalents [Member] | Cash Balance Pension Plan and Super Foods Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan Assets		0.40%

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- Definition

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

No definition available.

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- Definition

Target allocation of investments of this type to total plan assets presented on a weighted average basis.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (c)(i)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2446-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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- Definition

Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2446-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(1)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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