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Restructuring, Asset Impairment and Other - Schedule of Activity of Restructuring Costs (Parenthetical) (Detail) (USD $)
9 Months Ended 12 Months Ended
Dec. 28, 2013
Jan. 03, 2015
Mar. 30, 2013
Restructuring Cost And Reserve [Line Items]      
Provision for severance $ 1,061,000us-gaap_SeveranceCosts1 $ 306,000us-gaap_SeveranceCosts1  
Reduction in goodwill (1,300,000)us-gaap_GoodwillPeriodIncreaseDecrease (1,300,000)us-gaap_GoodwillPeriodIncreaseDecrease (600,000)us-gaap_GoodwillPeriodIncreaseDecrease
Food Distribution Segment [Member]      
Restructuring Cost And Reserve [Line Items]      
Provision for severance   100,000us-gaap_SeveranceCosts1
/ us-gaap_StatementBusinessSegmentsAxis
= sptn_FoodDistributionSegmentMember
 
Retail Segment [Member]      
Restructuring Cost And Reserve [Line Items]      
Provision for severance   $ 200,000us-gaap_SeveranceCosts1
/ us-gaap_StatementBusinessSegmentsAxis
= sptn_RetailSegmentMember