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Sales by Product Category in Each Reportable Segment (Detail) - USD ($) $ in Thousands | 3 Months Ended | 4 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2016 | Oct. 08, 2016 | Jul. 16, 2016 | Jan. 02, 2016 | Oct. 10, 2015 | Jul. 18, 2015 | Apr. 23, 2016 | Apr. 25, 2015 | Dec. 31, 2016 | Jan. 02, 2016 | Jan. 03, 2015
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales | $ 868,717 | $ 918,791 | $ 935,025 | $ 858,363 | $ 885,302 | $ 888,795 | $ 1,204,352 | $ 1,146,045 | $ 3,926,885 | $ 3,778,505 | $ 3,748,973
DSD Segment |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 3,284,177 | 3,179,348 | 3,155,607
Warehouse Segment |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 642,708 | 599,157 | 593,366
Branded Retail |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 2,282,892 | 2,151,514 | 2,102,028
Branded Retail | DSD Segment |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 2,113,595 | 2,011,433 | 1,971,851
Branded Retail | Warehouse Segment |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 169,297 | 140,081 | 130,177
Store Branded Retail |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 582,523 | 571,827 | 608,617
Store Branded Retail | DSD Segment |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 464,705 | 457,467 | 486,886
Store Branded Retail | Warehouse Segment |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 117,818 | 114,360 | 121,731
Non-Retail and Other |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 1,061,470 | 1,055,164 | 1,038,328
Non-Retail and Other | DSD Segment |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 705,877 | 710,448 | 696,870
Non-Retail and Other | Warehouse Segment |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | $ 355,593 | $ 344,716 | $ 341,458

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