Annual report pursuant to Section 13 and 15(d)

Leases (Minimum and Contingent Rent Exepense) (Details)

v3.20.1
Leases (Minimum and Contingent Rent Exepense) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 30, 2018
Dec. 31, 2017
Operating Leased Assets [Line Items]    
Total minimum and contingent rent $ (24,680) $ (21,537)
Unrelated Parties [Member]    
Operating Leased Assets [Line Items]    
Operating Leases, Rent Expense, Minimum Rentals 21,530 18,304
Operating Leases, Rent Expense, Contingent Rentals 317 397
Total minimum and contingent rent (21,847) (18,701)
Related Parties [Member]    
Operating Leased Assets [Line Items]    
Operating Leases, Rent Expense, Minimum Rentals 2,276 2,215
Operating Leases, Rent Expense, Contingent Rentals 557 621
Total minimum and contingent rent $ (2,833) $ (2,836)