Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 25, 2024	Dec. 27, 2023
Deferred tax assets:
Self-insurance accruals	$ 2,398	$ 2,536
Finance lease liabilities	1,102	1,119
Operating lease liabilities	34,468	30,445
Accrued exit costs	0	5
Pension, other retirement and compensation plans	5,922	7,127
Deferred income	3,868	4,617
Other accruals	1,824	478
General business and foreign tax credit carryforwards - state and federal	3,612	3,472
Net operating loss carryforwards - state	534	848
Total deferred tax assets before valuation allowance	53,728	50,647
Less: valuation allowance	(3,407)	(2,943)
Total deferred tax assets	50,321	47,704
Deferred tax liabilities:
Intangible assets	(16,140)	(15,044)
Contract assets	(1,212)	(1,460)
Deferred finance costs	0	(181)
Operating lease right-of-use assets	(31,544)	(27,307)
Fixed assets	(6,135)	(8,074)
Interest rate swaps	(5,254)	(2,220)
Total deferred tax liabilities	(60,285)	(54,286)
Net deferred tax liabilities	$ (9,964)	$ (6,582)