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Leases Sale and Lease Back (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 26, 2020
Dec. 28, 2019
Dec. 29, 2018
Leases [Abstract]      
Proceeds from sale of assets held for sale   $ 37,195  
Gain on sale of building $ 0 $ 25,121 $ 0
Lessee, Operating Lease, Term of Contract 10 years    
Lessee, Operating Lease, Renewal Term   5 years  
Lessee, Operating Lease, Payments for Rent   $ 2,083  
Rent escalation   2.00%