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Restructuring and Asset Impairments - Schedule of Activity of Restructuring Costs (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] |  |
Beginning balance | $ 14,068 us-gaap_RestructuringReserve |
Provision for severance | 304 us-gaap_SeveranceCosts1 | 196 us-gaap_SeveranceCosts1
Changes in estimates | (287)us-gaap_RestructuringReservePeriodIncreaseDecrease |
Lease termination adjustment | (1,745)us-gaap_RestructuringReserveAccrualAdjustment |
Accretion expense | 175 us-gaap_RestructuringReserveTranslationAndOtherAdjustment |
Payments | (2,806)us-gaap_PaymentsForRestructuring |
Ending balance | 16,469 us-gaap_RestructuringReserve |
Business Restructuring Reserves [Member] |  |
Restructuring Cost And Reserve [Line Items] |  |
Provision for lease and related ancillary costs, net of sublease income | 6,760 us-gaap_ProvisionForLeaseLosses / us-gaap_ValuationAllowancesAndReservesTypeAxis = us-gaap_BusinessRestructuringReservesMember |
Lease and Ancillary Costs [Member] |  |
Restructuring Cost And Reserve [Line Items] |  |
Beginning balance | 13,988 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = sptn_LeaseAndAncillaryCostsMember |
Changes in estimates | (287)us-gaap_RestructuringReservePeriodIncreaseDecrease / us-gaap_RestructuringCostAndReserveAxis = sptn_LeaseAndAncillaryCostsMember |
Lease termination adjustment | (1,745)us-gaap_RestructuringReserveAccrualAdjustment / us-gaap_RestructuringCostAndReserveAxis = sptn_LeaseAndAncillaryCostsMember |
Accretion expense | 175 us-gaap_RestructuringReserveTranslationAndOtherAdjustment / us-gaap_RestructuringCostAndReserveAxis = sptn_LeaseAndAncillaryCostsMember |
Payments | (2,522)us-gaap_PaymentsForRestructuring / us-gaap_RestructuringCostAndReserveAxis = sptn_LeaseAndAncillaryCostsMember |
Ending balance | 16,369 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = sptn_LeaseAndAncillaryCostsMember |
Lease and Ancillary Costs [Member] | Business Restructuring Reserves [Member] |  |
Restructuring Cost And Reserve [Line Items] |  |
Provision for lease and related ancillary costs, net of sublease income | 6,760 us-gaap_ProvisionForLeaseLosses / us-gaap_RestructuringCostAndReserveAxis = sptn_LeaseAndAncillaryCostsMember / us-gaap_ValuationAllowancesAndReservesTypeAxis = us-gaap_BusinessRestructuringReservesMember |
Severance [Member] |  |
Restructuring Cost And Reserve [Line Items] |  |
Beginning balance | 80 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember |
Provision for severance | 304 us-gaap_SeveranceCosts1 / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember |
Payments | (284)us-gaap_PaymentsForRestructuring / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember |
Ending balance | $ 100 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember |

X
- Definition Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Definition Amount of expense related to estimated loss to be realized from lease transactions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.11) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
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- Definition Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 + Details
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- Definition Amount of any reversal and other adjustment made during the period to the amount of a previously accrued liability for a specified type of restructuring cost, excluding adjustments for costs incurred during the period, costs settled during the period, and foreign currency translation adjustments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 40 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6394291&loc=d3e17658-110867 + Details
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- Definition Net total Increase or Decrease in the accrual for restructuring costs during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 + Details
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- Definition The amount of change in the restructuring reserve related to foreign currency translation adjustments and any other adjustments not separately disclosed or provided for elsewhere in the Taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)(2)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 + Details
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- Definition Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(10) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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