Benefit Plans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 24, 2022	Sep. 25, 2021	Sep. 24, 2022	Sep. 25, 2021
Pension Benefits
Components of net periodic benefit cost (income) [Abstract]
Interest cost	$ 394	$ 313	$ 1,181	$ 939
Expected return on plan assets	(967)	(903)	(2,901)	(2,711)
Amortization of net loss (gain)	244	378	731	1,135
Net periodic benefit cost (income)	(329)	(212)	(989)	(637)
Other Benefits
Components of net periodic benefit cost (income) [Abstract]
Interest cost	104	87	310	261
Amortization of net loss (gain)	(59)	(32)	(177)	(96)
Service cost	72	64	216	194
Amortization of prior service credit	(1)	(118)	(198)	(353)
Curtailment gain	0	0	(1,756)	0
Net periodic benefit cost (income)	$ 116	$ 1	$ (1,605)	$ 6