Leases Contractual Obligations for Operating and Financing Liabilities (Details) - USD ($) $ in Thousands		Jun. 26, 2021	Dec. 26, 2020
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year		$ 2,342
Lessee, Operating Lease, Liability, to be Paid, Year Two		4,198
Lessee, Operating Lease, Liability, to be Paid, Year Three		3,251
Lessee, Operating Lease, Liability, to be Paid, Year Four		2,940
Lessee, Operating Lease, Liability, to be Paid, Year Five		2,969
Lessee, Operating Lease, Liability, to be Paid, after Year Five		11,561
Lessee, Operating Lease, Liability, to be Paid		27,261
Lessee, Operating Lease, Liability, Undiscounted Excess Amount		6,215
Operating Lease, Liability		21,046	$ 22,727
Finance Lease, Liability, Payment, Due [Abstract]
Finance Lease, Liability, to be Paid, Remainder of Fiscal Year		2,004
Finance Lease, Liability, to be Paid, Year Two		2,782
Finance Lease, Liability, to be Paid, Year Three		3,409
Finance Lease, Liability, to be Paid, Year Four		1,045
Finance Lease, Liability, to be Paid, Year Five		1,053
Finance Lease, Liability, to be Paid, after Year Five		14,985
Finance Lease, Liability, Payment, Due		25,278
Finance Lease, Liability, Undiscounted Excess Amount		9,820
Finance Lease, Liability	[1]	$ 15,458	$ 16,938

[1] Includes leases classified as failed sale-leaseback transactions.