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Income Tax - Additional Information (Detail) - USD ($) $ in Millions |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 28, 2019 | Oct. 06, 2018 | Dec. 29, 2018 | Dec. 30, 2017 | Dec. 31, 2016
Income Tax Expense Benefit Continuing Operations [Line Items] |  |  |  |  |
Federal statutory rate |  |  | 21.00% | 35.00% | 35.00%
Provisional discrete income tax benefit, re-measurement of deferred income tax assets and liabilities |  |  |  | $ 26.0 |
Income tax benefit resulting from Tax Act |  | $ 0.5 |  |  |
Uncertain tax positions included in unrecognized tax benefits |  |  | $ 0.3 |  |
Effective income tax rate reconciliation, reduction resulting from lapse of statute of limitations |  |  | $ 1.0 |  |
Forecast [Member] |  |  |  |  |
Income Tax Expense Benefit Continuing Operations [Line Items] |  |  |  |  |
Impact of unrecognized tax benefits settlement on effective tax rate | $ 0.9 |  |  |  |

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- Definition Amount of income tax expense for remeasurement of deferred tax asset from change in tax rate pursuant to Tax Cuts and Jobs Act. + References No definition available. + Details
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