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v2.4.1.9

Restructuring and Asset Impairment - Schedule of Restructuring and Asset Impairment (Parenthetical) (Detail) (USD $) In Thousands, unless otherwise specified | 4 Months Ended
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Apr. 25, 2015 | Apr. 19, 2014
Restructuring Cost And Reserve [Line Items] |  |
Changes in estimates | $ (287)sptn_RestructuringReserveChangeInEstimates | $ (399)sptn_RestructuringReserveChangeInEstimates
Retail Segment [Member] |  |
Restructuring Cost And Reserve [Line Items] |  |
Changes in estimates | $ (287)sptn_RestructuringReserveChangeInEstimates / us-gaap_StatementBusinessSegmentsAxis = sptn_RetailSegmentMember | $ (379)sptn_RestructuringReserveChangeInEstimates / us-gaap_StatementBusinessSegmentsAxis = sptn_RetailSegmentMember

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- Definition Restructuring reserve change in estimates. + References No definition available. + Details
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Namespace Prefix: | sptn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | us-gaap_RestructuringCostAndReserveLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=sptn_RetailSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |