Pension and Postretirement Benefit Obligations - Components of Net Periodic Pension Cost (Details) - Pension Plans - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2022	Jul. 02, 2021	Jul. 01, 2022	Jul. 02, 2021
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1,861	$ 1,863	$ 3,721	$ 3,726
Interest cost	2,659	2,455	5,318	4,908
Expected return on plan assets	(2,036)	(3,248)	(4,071)	(6,498)
Recognized net actuarial loss	988	1,216	1,977	2,435
Amortization of prior service cost	0	0	0	1
Net periodic pension/postretirement benefit cost	$ 3,472	$ 2,286	$ 6,945	$ 4,572