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Weighted Percentage of Sales from Largest Customers (Detail) - Customer Concentration Risk - Total year to date sales - Wal-Mart/Sam's Club | 12 Months Ended
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Dec. 29, 2018 | Dec. 30, 2017 | Dec. 31, 2016
Entity Wide Revenue Major Customer [Line Items] |  |  |
Concentration risk percentage | 20.30% | 20.00% | 19.60%
DSD Segment |  |  |
Entity Wide Revenue Major Customer [Line Items] |  |  |
Concentration risk percentage | 17.90% | 17.60% | 17.00%
Warehouse Segment |  |  |
Entity Wide Revenue Major Customer [Line Items] |  |  |
Concentration risk percentage | 2.40% | 2.40% | 2.60%

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