Pension and Other Postretirement Obligations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jul. 02, 2023	Jun. 30, 2024	Jul. 02, 2023
Pension Obligations
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 739	$ 844	$ 1,487	$ 1,534
Interest cost	3,660	3,810	7,336	7,554
Expected return on plan assets	(4,027)	(4,329)	(8,074)	(8,438)
Amortization of prior service cost	44	44	89	87
Actuarial gains	(26)	(232)	(52)	(458)
Net periodic benefit cost	390	137	786	279
Other Postretirement Obligations
Defined Benefit Plan Disclosure [Line Items]
Service cost	10	3	20	6
Interest cost	235	252	473	503
Expected return on plan assets	0	0	0	0
Amortization of prior service cost	0	0	0	0
Actuarial gains	(116)	(191)	(233)	(382)
Net periodic benefit cost	$ 129	$ 64	$ 260	$ 127