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Schedule of Actuarial Gain/(loss) on Defined Benefit Obligations (Detail) - USD ($) $ in Thousands		12 Months Ended
		Jan. 02, 2021		Dec. 28, 2019
Compensation And Retirement Disclosure [Abstract]
Amount of (Gain)/Loss on Defined Benefit Obligation		$ 3,718	[1]	$ 45,979
Reasons for (Gain)/Loss	[1]	Loss from decrease in general level of interest rates used to measure defined benefit plan obligations (approximately 60 basis points); Gain from change in mortality assumption scale from MP-2019 to MP-2020. Loss from decrease in general level of interest rates used to measure defined benefit plan obligations (approximately 90 basis points); Gain from change in mortality assumption to use PRI-2012 Mortality Tables and projection scale from MP-2019, from MP-2018 Mortality tables and projection scale MP-2018.
[1] Includes only losses from plans remaining at December 31, 2020

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- Definition

Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
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Description of reason for changes in benefit obligation and plan assets of defined benefit plan.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
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