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Income Tax - Additional Information (Detail) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
	Jan. 02, 2021	Oct. 06, 2018	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Income Tax Expense Benefit Continuing Operations [Line Items]
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			$ 0.2	$ 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

Effective income tax rate reconciliation, reduction resulting from lapse of statute of limitations.

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- Definition

Income tax expense benefit continuing operations.

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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

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- Definition

Amount of income tax expense (benefit) for remeasurement of deferred tax from change in tax rate pursuant to Tax Cuts and Jobs Act.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319

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- Definition

Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319

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- Definition

The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
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