Pension and Other Postretirement Obligations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2024	Oct. 01, 2023	Sep. 29, 2024	Oct. 01, 2023
Pension Obligations
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 797	$ 522	$ 2,284	$ 2,056
Interest cost	3,723	3,838	11,059	11,392
Expected return on plan assets	(4,147)	(4,038)	(12,221)	(12,476)
Amortization of prior service cost	46	45	135	132
Actuarial gains	(27)	(234)	(79)	(692)
Net periodic benefit cost	392	133	1,178	412
Other Postretirement Obligations
Defined Benefit Plan Disclosure [Line Items]
Service cost	10	3	30	6
Interest cost	235	253	708	756
Expected return on plan assets	0	0	0	0
Amortization of prior service cost	0	0	0	0
Actuarial gains	(116)	(192)	(349)	(574)
Net periodic benefit cost	$ 129	$ 64	$ 389	$ 188