Multiemployer plans fund administrators percentage of aggregate employer.

No definition available.

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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.

+ Details

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- Definition

Amount of contributions made to the multiemployer plan by all employers who participate in the plan. A multiemployer plan is a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 80

-Section 50

-Paragraph 7

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=49170332&loc=SL14450678-114947

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of cash or cash equivalents contributed by the entity to fund its pension plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 25

-Subparagraph (g)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3536-108585

+ Details

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- Details

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- Details

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Associate Retirement Plans - Additional Information (Detail) - USD ($) $ in Millions	9 Months Ended		12 Months Ended
	Oct. 10, 2015	Oct. 04, 2014	Jan. 03, 2015
SpartanNash Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Standard pension funding carryover	$ 0.7
Central States, Southeast and Southwest Areas Pension Fund [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension contributions during plan year	$ 9.9	$ 10.3	$ 12.9
Maximum company contribution as percentage of total employer contributions			5.00%