Pension and Postretirement Benefit Obligations - Components of Net Periodic Postretirement Benefit Cost (Details) - Postretirement Benefits - 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	$ 384	$ 403	$ 767	$ 806
Interest cost	475	448	949	895
Recognized net actuarial loss	91	185	183	371
Net periodic pension/postretirement benefit cost	$ 950	$ 1,036	$ 1,899	$ 2,072