Components of Net Periodic Benefit (Income) Cost (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 28, 2024	Dec. 28, 2024	Dec. 30, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Settlement loss	$ (200)
Total recognized in net periodic cost (benefit) and OCI		$ (418)	$ (390)	$ (2,851)
Pension plans
Defined Benefit Plan Disclosure [Line Items]
Service cost		728	682	1,188
Interest cost		1,178	1,304	884
Expected return on plan assets		(1,604)	(1,561)	(1,874)
Settlement loss		241
Amortization of prior service cost (credit)		57	57	57
Amortization of net (gain) loss		42	173	461
Net periodic benefit (income) cost		642	655	716
Current year actuarial loss (gain)		(720)	(815)	(3,049)
Settlement loss		(241)
Amortization of prior service (cost) credit		(57)	(57)	(57)
Amortization of actuarial gain (loss)		(42)	(173)	(461)
Total recognized in OCI		$ (1,060)	$ (1,045)	$ (3,567)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]		Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component Excluding Settlement Loss Excluding Curtailment	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component Excluding Settlement Loss Excluding Curtailment	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component Excluding Settlement Loss Excluding Curtailment