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Income Taxes - Narratve (Detail) - USD ($) | 12 Months Ended |
--- | --- | ---
Jan. 02, 2021 | Dec. 28, 2019 | Dec. 29, 2018 | Dec. 30, 2017
Income Tax [Line Items] |  |  |  |
Effective income tax rate | 23.20% | 23.40% | 24.00% |
Additional net tax benefits due to pension contributions and other changes |  |  | $ 4,400,000 |
Valuation allowance | $ 26,700,000 | $ 27,800,000 | 25,100,000 |
Unrecognized tax benefits | 9,100,000 | 10,300,000 | 11,100,000 | $ 7,700,000
Accrued interest and penalties related to unrecognized tax benefits | 1,100,000 | 1,100,000 | 800,000 |
Increase in unrecognized tax benefits | 400,000 | 500,000 | 2,800,000 |
Undistributed earnings | 319,100,000 |  |  |
Undistributed foreign earnings | 5,400,000 | $ 6,600,000 | $ 6,000,000.0 |
Deferred Income Tax Assets |  |  |  |
Income Tax [Line Items] |  |  |  |
Unrecognized tax benefits | 1,400,000 |  |  |
Other Long-Term Liabilities |  |  |  |
Income Tax [Line Items] |  |  |  |
Unrecognized tax benefits | 7,700,000 |  |  |
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 | 700,000 |  |  |
Increase in unrecognized tax benefits | $ 800,000 |  |  |

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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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