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Related Party - Additional Information (Detail) - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 29, 2018 | Sep. 30, 2017 | Sep. 29, 2018 | Sep. 30, 2017 | Dec. 30, 2017
Ms. Winfrey and her related entities |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Related Party Transaction, service provided by related party | $ 157 | $ 364 | $ 2,145 | $ 2,920 |
Ms. Winfrey |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Accounts payable to related parties | $ 125 |  | $ 125 |  | $ 828
Number of shares purchased from related party |  |  | 954 |  |
Stock options exercised |  |  | 1,405 |  |

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- Definition Amount of selling, general and administrative expenses resulting from transactions, excluding transactions that are eliminated in consolidated or combined financial statements, with related party. + References No definition available. + Details
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