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Income Taxes - Additional Information (Detail) - USD ($) $ in Millions | 4 Months Ended | 8 Months Ended | 12 Months Ended
--- | --- | --- | ---
Apr. 24, 2021 | Apr. 18, 2020 | Jan. 02, 2021 | Dec. 30, 2017
Income Tax Disclosure [Abstract] |  |  |  |
Effective income tax rate | 24.60% | 0.20% |  |
Net discrete income tax benefits of CARES Act |  | $ 4.3 |  |
Federal statutory income tax rate |  |  |  | 35.00%
Additional tax benefit recognized of CARES Act |  |  | $ 5.0 |
Proceeds from income tax refunds related to amended prior year returns | $ 25.7 |  |  |

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