Summary of Company's Condensed Consolidated Balance Sheets Related Pension and Other Postretirement Benefit Plan (Detail) - USD ($) $ in Thousands	Apr. 19, 2025	Dec. 28, 2024
Pension and Other Postretirement Benefits Cost (Reversal of Cost) [Abstract]
Noncurrent benefit asset	$ 6,773	$ 6,869
Current benefit liability	703	703
Noncurrent benefit liability	5,241	5,511
AOCI, net of tax	$ (348)	$ (257)

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

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