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Effect of Largest Customer in Sales (Detail) (Sales Revenue, Net, Wal-Mart/Sam's Club) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 04, 2014 | Oct. 05, 2013 | Oct. 04, 2014 | Oct. 05, 2013
Revenue, Major Customer [Line Items] |  |  |  |
Percentage of sales, Total | 19.40% | 20.10% | 19.40% | 20.20%
DSD segment |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Percentage of sales, Total | 16.90% | 17.20% | 16.80% | 17.10%
Warehouse segment |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Percentage of sales, Total | 2.50% | 2.90% | 2.60% | 3.10%

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