Benefit Plans - Total Funded Status of the Plans Recognized in the Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 25, 2021	Dec. 26, 2020
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Current liability	$ 0	$ 0
Long-term liability	(4,805)	(12,329)
Total (underfunded) funded status	(4,805)	(12,329)
Other Benefits
Defined Benefit Plan Disclosure [Line Items]
Current liability	(962)	(948)
Long-term liability	(10,863)	(11,834)
Total (underfunded) funded status	$ (11,825)	$ (12,782)