XML 88 R69.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Commitments and Contingencies - Schedule of Unions Representing Employees and the Expiration Date for Agreements (Detail) | 12 Months Ended
--- | ---
Dec. 31, 2016
Lima Ohio [Member] |
Commitments And Contingencies [Line Items] |
Union Locals | IBT 908
Expiration Dates | 2019-01
Bellefontaine Ohio GTL Truck Lines Inc [Member] |
Commitments And Contingencies [Line Items] |
Union Locals | IBT 908
Expiration Dates | 2019-02
Bellefontaine Ohio General Merchandise Service Division [Member] |
Commitments And Contingencies [Line Items] |
Union Locals | IBT 908
Expiration Dates | 2019-02
Grand Rapids Michigan [Member] |
Commitments And Contingencies [Line Items] |
Union Locals | IBT 406
Expiration Dates | 2017-10
Landover Maryland [Member] |
Commitments And Contingencies [Line Items] |
Union Locals | IBT 639
Expiration Dates | 2018-02
Norfolk Virginia [Member] |
Commitments And Contingencies [Line Items] |
Union Locals | IBT 822
Expiration Dates | 2019-04
Columbus Georgia [Member] |
Commitments And Contingencies [Line Items] |
Union Locals | IBT 528
Expiration Dates | 2019-09

X
- Definition Commitments and Contingencies. + References No definition available. + Details
Name: | sptn_CommitmentsAndContingenciesLineItems
Namespace Prefix: | sptn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Labor union agreement expiration date. + References No definition available. + Details
Name: | sptn_LaborUnionAgreementExpirationDate
Namespace Prefix: | sptn_
Data Type: | xbrli:gYearMonthItemType
Balance Type: | na
Period Type: | duration

X
- Definition Unions representing employees. + References No definition available. + Details
Name: | sptn_UnionsRepresentingEmployees
Namespace Prefix: | sptn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementGeographicalAxis=sptn_LimaOhioMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementGeographicalAxis=sptn_BellefontaineOhioGTLTruckLinesIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementGeographicalAxis=sptn_BellefontaineOhioGeneralMerchandiseServiceDivisionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementGeographicalAxis=sptn_GrandRapidsMichiganMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementGeographicalAxis=sptn_LandoverMarylandMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementGeographicalAxis=sptn_NorfolkVirginiaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementGeographicalAxis=sptn_ColumbusGeorgiaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |