XML 69 R51.htm IDEA: XBRL DOCUMENT v3.10.0.1
Summary of Significant Accounting Policies, Leases (Details) - Land and/or building
12 Months Ended
Dec. 25, 2018
Leases and Leasehold Improvements  
Lease renewal term 5 years
Minimum  
Leases and Leasehold Improvements  
Lease term 10 years
Lease renewal option 1 year
Maximum  
Leases and Leasehold Improvements  
Lease term 15 years