Pension Benefits (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2022	Jul. 04, 2021	Jul. 03, 2022	Jul. 04, 2021
Net periodic benefit cost:
Service cost	$ 300	$ 275	$ 600	$ 550
Interest cost	1,384	1,275	2,768	2,550
Expected return on plan assets	(3,060)	(3,069)	(6,119)	(6,138)
Amortization of net actuarial loss	229	340	458	680
Total net periodic benefit	$ (1,147)	$ (1,179)	$ (2,293)	$ (2,358)
Weighted-Average Assumptions Used To Determine Net Cost
Discount rate	2.60%	2.20%	2.60%	2.20%
Expected return on plan assets	5.75%	5.75%	5.75%	5.75%
Employer contributions			$ 0	$ 0