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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

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