Summary of Company's Condensed Consolidated Balance Sheets Related Pension and Other Postretirement Benefit Plan (Detail) - USD ($) $ in Thousands	Apr. 20, 2024	Dec. 30, 2023
Pension and Other Postretirement Benefits Cost (Reversal of Cost) [Abstract]
Noncurrent benefit asset	$ 6,428	$ 6,494
Current benefit liability	699	699
Noncurrent benefit liability	5,700	5,798
AOCI, net of tax	$ (415)	$ (342)

Amount of asset, recognized in statement of financial position, for overfunded defined benefit pension and other postretirement plans.

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Name:	us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant