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Related Party - Additional Information (Detail) - USD ($) $ in Thousands |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Dec. 15, 2019 | Oct. 18, 2015 | Dec. 31, 2020 | Jun. 27, 2020 | Jan. 02, 2021 | Dec. 28, 2019 | Dec. 29, 2018
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Initial agreement term |  | 5 years |  |  |  |  |
Fully vested option to purchase shares of common stock |  |  |  |  | 0 | 0 |
Dividend yield |  |  |  |  | 0.00% |  |
Ms. Winfrey |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Fully vested option to purchase shares of common stock | 3,276,000 |  |  |  | 3,874,000 |  |
Compensation expense |  |  |  | $ 32,686 |  |  |
Dividend yield |  |  |  | 0.00% |  |  |
Volatility rate |  |  |  | 63.68% |  |  |
Risk-free interest rate |  |  |  | 0.41% |  |  |
Accounts payable to related parties |  |  |  |  | $ 76 | $ 72 |
Number of shares purchased from related party |  |  | 2,782,000 |  |  |  |
Stock options exercised |  |  | 1,118,000 |  | 1,162,000 |  |
Ms. Winfrey | Selling, General and Administrative Expenses |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Compensation expense |  |  |  | $ 32,686 |  |  |
Ms. Winfrey and her related entities |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Related Party Transaction, service provided by related party |  |  |  |  | $ 2,228 | 2,791 | $ 2,208
Related Party, advertising expenses |  |  |  |  |  | $ 330 |
Related Party Transaction, actual costs reimbursed |  |  |  |  | $ 1,653 |  |

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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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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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