Pension and Other Postretirement Obligations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2025	Sep. 29, 2024	Sep. 28, 2025	Sep. 29, 2024
Pension Obligations
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 870	$ 797	$ 2,514	$ 2,284
Interest cost	3,901	3,723	11,501	11,059
Expected return on plan assets	(4,012)	(4,147)	(11,810)	(12,221)
Amortization of prior service cost	40	46	116	135
Actuarial losses (gains)	322	(27)	962	(79)
Net periodic benefit cost	1,121	392	3,283	1,178
Other Postretirement Obligations
Defined Benefit Plan Disclosure [Line Items]
Service cost	8	10	23	30
Interest cost	231	235	684	708
Expected return on plan assets	0	0	0	0
Amortization of prior service cost	0	0	0	0
Actuarial losses (gains)	(84)	(116)	(250)	(349)
Net periodic benefit cost	$ 155	$ 129	$ 457	$ 389