Schedule of Net Periodic Pension and Postretirement (income) Cost (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2024	Oct. 01, 2023	Sep. 29, 2024	Oct. 01, 2023
Defined Benefit Plan Disclosure
Net actuarial loss (gain)			$ (2,512)	$ 0
United States
Defined Benefit Plan Disclosure
Service cost	$ 216	$ 272	665	815
Interest cost	1,590	1,713	4,883	5,138
Expected return on plan assets	(1,204)	(1,286)	(3,737)	(3,856)
Net actuarial loss (gain)	(2,262)	0	(2,151)	24
Settlement expense	394	0	394	0
Total net periodic pension cost	(1,266)	699	54	2,121
Foreign Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure
Service cost	119	107	360	320
Interest cost	256	253	766	762
Expected return on plan assets	(23)	(11)	(58)	(28)
Net actuarial loss (gain)	0	66	(242)	66
Settlement expense	0	5	(24)	5
Total net periodic pension cost	352	420	802	1,125
Postretirement Benefit Plans
Defined Benefit Plan Disclosure
Service cost	9	9	28	26
Interest cost	72	60	217	181
Net actuarial loss (gain)	0	0	(94)	30
Amortization of prior service credit	(2)	(2)	(7)	(7)
Special termination benefits	0	1,423	462	1,792
Total net periodic pension cost	$ 79	$ 1,490	$ 606	$ 2,022