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Restructuring and Asset Impairment - Schedule of Restructuring,Asset Impairment and Other (Parenthetical) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
	Jul. 12, 2014	Jul. 12, 2014
Restructuring Cost and Reserve [Line Items]
Changes in estimates	$ 307	$ (92)
Retail Segment [Member]
Restructuring Cost and Reserve [Line Items]
Changes in estimates		(379)
Food Distribution Segment [Member]
Restructuring Cost and Reserve [Line Items]
Changes in estimates		$ 287

X

- 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

X

- Details

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