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Merger - Pro Forma Effect on Operating Results (Detail) (Nash-Finch Company [Member], USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Oct. 12, 2013
Oct. 12, 2013
Nash-Finch Company [Member]
   
Business Acquisition [Line Items]    
Net sales $ 1,796,656 $ 5,928,875
Net earnings from continuing operations $ 13,799 $ 41,980