Other Postretirement Benefits - Schedule of Components of Net Periodic Postretirement Benefit Income (Details) - Other Postretirement Benefit Plans - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 26, 2021	Dec. 27, 2020
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	$ 46	$ 53	$ 29
Interest cost	731	565	1,026
Amortization and other costs	3,293	3,407	3,051
Amortization of prior service credit	(368)	(3,098)	(4,225)
Net periodic postretirement benefit cost/(income)	$ 3,702	$ 927	$ (119)