Leases Contractual Obligations for Operating and Financing Liabilities (Details) - USD ($) $ in Thousands		Sep. 25, 2021	Dec. 26, 2020
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year		$ 1,016
Lessee, Operating Lease, Liability, to be Paid, Year Two		3,570
Lessee, Operating Lease, Liability, to be Paid, Year Three		2,872
Lessee, Operating Lease, Liability, to be Paid, Year Four		2,785
Lessee, Operating Lease, Liability, to be Paid, Year Five		2,808
Lessee, Operating Lease, Liability, to be Paid, after Year Five		11,521
Lessee, Operating Lease, Liability, to be Paid		24,572
Lessee, Operating Lease, Liability, Undiscounted Excess Amount		5,663
Operating Lease, Liability		18,909	$ 21,719
Finance Lease, Liability, Payment, Due [Abstract]
Finance Lease, Liability, to be Paid, Remainder of Fiscal Year		828
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		24,102
Finance Lease, Liability, Undiscounted Excess Amount		9,453
Finance Lease, Liability	[1]	$ 14,649	$ 16,938

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