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Income Taxes - Narratve (Detail) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 28, 2019 | Dec. 29, 2018 | Dec. 30, 2017 | Dec. 31, 2016
Income Tax [Line Items] |  |  |  |
Effective income tax rate | 23.40% | 24.00% | 31.10% |
Tax Cuts and Jobs Act, income tax expense |  |  | $ 7,000,000.0 |
Tax Cuts and Jobs Act, Transition tax |  |  | 13,700,000 |
Provision includes revaluation of deferred tax assets and liabilities, benefit |  |  | 6,700,000 |
Tax Cut and Jobs Act, Transition Tax |  | $ 8,300,000 |  |
Additional net tax benefits due to pension contributions and other changes |  | 4,400,000 |  |
Valuation allowance | $ 27,800,000 | 25,100,000 | 25,200,000 |
Unrecognized tax benefits | 10,300,000 | 11,100,000 | 7,700,000 | $ 9,400,000
Accrued interest and penalties related to unrecognized tax benefits | 1,100,000 | 800,000 | 600,000 |
Interest and penalties related to unrecognized tax benefits | 300,000 |  |  |
Increase in unrecognized tax benefits | 500,000 | 2,800,000 | 1,000,000.0 |
Undistributed earnings | 271,800,000 |  |  |
Undistributed foreign earnings | 6,600,000 | $ 6,000,000.0 | $ 0 |
Deferred Income Tax Assets |  |  |  |
Income Tax [Line Items] |  |  |  |
Unrecognized tax benefits | 1,200,000 |  |  |
Other Long-Term Liabilities |  |  |  |
Income Tax [Line Items] |  |  |  |
Unrecognized tax benefits | 9,100,000 |  |  |
Accrued interest and penalties related to unrecognized tax benefits | 1,100,000 |  |  |
Minimum |  |  |  |
Income Tax [Line Items] |  |  |  |
Decrease in unrecognized tax benefits | 0 |  |  |
Increase in unrecognized tax benefits | 0 |  |  |
Maximum |  |  |  |
Income Tax [Line Items] |  |  |  |
Decrease in unrecognized tax benefits | 2,400,000 |  |  |
Increase in unrecognized tax benefits | $ 900,000 |  |  |

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