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Related Party Transactions (Details) - Lease of Facilities - Director
$ in Millions
12 Months Ended
Dec. 29, 2018
USD ($)
Facility
Related Party Transaction [Line Items]  
Rent and related amounts paid to LLC $ 1.5
Vice Chairman  
Related Party Transaction [Line Items]  
Ownership percentage 33.33%
Number of facilities owned | Facility 6
Rent and related amounts paid to LLC $ 0.5