Leases (Details) $ in Thousands	Dec. 26, 2018 USD ($)
Operating Leased Assets
Term of typical renewal options on land and building leases	5 years
Capital Lease Commitments:
2019	$ 9,271
2020	8,664
2021	8,010
2022	7,320
2023	6,451
Thereafter	33,670
Total	73,386
Less imputed interest	42,795
Present value of capital lease obligations	30,591
Operating Lease Commitments:
2019	23,504
2020	20,161
2021	17,316
2022	14,646
2023	11,881
Thereafter	49,004
Total	136,512
Operating Lease Receipts:
2019	21,001
2020	18,493
2021	16,573
2022	14,887
2023	12,932
Thereafter	65,273
Total	$ 149,159
Minimum [Member]
Operating Leased Assets
Initial terms of land and building leases	10 years
Maximum [Member]
Operating Leased Assets
Initial terms of land and building leases	15 years