Pension and Other Postretirement Obligations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2023	Oct. 02, 2022	Oct. 01, 2023	Oct. 02, 2022
Defined Benefit Plan Disclosure [Line Items]
Settlement loss		$ 1,000		$ 1,000
Pension Obligations
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 522	758	$ 2,056	2,488
Interest cost	3,838	2,241	11,392	6,833
Expected return on plan assets	(4,038)	(3,644)	(12,476)	(11,405)
Amortization of prior service cost	45	41	132	132
Actuarial losses (gains)	(234)	212	(692)	672
Settlement loss	0	954	0	954
Net periodic benefit cost	133	562	412	(326)
Other Postretirement Obligations
Defined Benefit Plan Disclosure [Line Items]
Service cost	3	6	6	18
Interest cost	253	190	756	578
Expected return on plan assets	0	0	0	0
Amortization of prior service cost	0	0	0	0
Actuarial losses (gains)	(192)	(20)	(574)	(60)
Settlement loss	0		0	0
Net periodic benefit cost	$ 64	$ 176	$ 188	$ 536