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Related Party - Additional Information (Detail) - USD ($) $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
Dec. 15, 2019 | Oct. 18, 2015 | Dec. 28, 2019 | Dec. 29, 2018 | Dec. 30, 2017
Related Party Transaction [Line Items] |  |  |  |  |
Initial agreement term |  | 5 years |  |  |
Option awards granted during period |  |  | 0 | 0 |
Stock options exercised |  |  | 74,000 |  |
Ms. Winfrey |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Option awards granted during period | 3,276 |  |  |  |
Purchased good from related entity |  |  |  |  | $ 84
Accounts payable to related parties |  |  | $ 72 | $ 62 |
Number of shares purchased from related party |  |  | 954,000 |  |
Stock options exercised |  |  | 1,405,000 |  |
Ms. Winfrey and her related entities |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Related Party Transaction, service provided by related party |  |  | $ 2,791 | $ 2,208 | $ 4,266
Related Party, advertising expenses |  |  | $ 330 |  |

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