Leases Finance And Operating Lease Maturity (Details) - USD ($) $ in Thousands	Dec. 26, 2020	Dec. 28, 2019
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months	$ 4,783
Lessee, Operating Lease, Liability, Payments, Due Year Two	4,198
Lessee, Operating Lease, Liability, Payments, Due Year Three	3,251
Lessee, Operating Lease, Liability, Payments, Due Year Four	2,940
Lessee, Operating Lease, Liability, Payments, Due Year Five	2,969
Lessee, Operating Lease, Liability, Payments, Due after Year Five	11,561
Lessee, Operating Lease, Liability, Payments, Due	29,702
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(6,975)
Operating Lease, Liability	22,727	$ 25,295
Finance Lease, Liability, Payment, Due [Abstract]
Finance Lease, Liability, Payments, Due Next Twelve Months	4,259
Finance Lease, Liability, Payments, Due Year Two	2,782
Finance Lease, Liability, Payments, Due Year Three	3,409
Finance Lease, Liability, Payments, Due Year Four	1,045
Finance Lease, Liability, Payments, Due Year Five	1,053
Finance Lease, Liability, Payments, Due after Year Five	14,988
Finance Lease, Liability, Payment, Due	27,536
Finance Lease, Liability, Undiscounted Excess Amount	(10,598)
Finance Lease, Liability	$ 16,938	$ 19,483