Segment Information - Reconciliation of Operating Costs and Profit (Details) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended
	Jun. 30, 2023 USD ($)	Jun. 30, 2023 USD ($)	Jun. 26, 2022 USD ($)	Jun. 30, 2023 USD ($)	Jun. 26, 2022 USD ($)
Segment Reporting [Abstract]
Total operating costs		$ 522,342	$ 504,019	$ 1,055,181	$ 1,000,448
Operating costs, percent change		0.036		0.055
Operating profit		$ 55,775	51,661	$ 83,675	57,945
Operating profit, percent change		0.080		0.444
Depreciation and amortization		$ 21,858	20,704	$ 42,698	39,390
Depreciation and amortization, percent change		0.056		0.084
Severance		$ 713	2,660	$ 4,493	2,660
Severance, percent change		(73.20%)		68.90%
Multiemployer pension plan withdrawal costs		$ 1,084	1,194	$ 2,539	2,415
Multiemployer pension plan withdrawal costs, percent change		(0.092)		0.051
Adjusted operating costs		$ 498,687	479,461	$ 1,005,451	955,983
Adjusted operating costs, percent change		0.040		0.052
Acquisition-related costs		$ 0	0	$ 0	34,712
Lease-related impairment charge	$ 7,600	12,736	0	12,736	0
Adjusted operating profit		$ 92,166	$ 76,219	$ 146,141	$ 137,122
Adjusted operating profit, percent change		0.209		0.066