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Schedule II - Valuation and Qualifying Accounts (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 30, 2018
Dec. 31, 2017
Jan. 01, 2017
Dec. 25, 2015
Allowance for Doubtful Accounts        
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]        
Balance, beginning of the year $ 5,026 $ 4,344 $ 5,160 $ 5,902
Charged to expense 9,785 6,903 8,171  
Release of allowance or Write-offs (9,103) (7,719) (8,913)  
Balance, end of the year 5,026 4,344 5,160  
Allowance for Receivable from Insurance Provider        
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]        
Balance, beginning of the year 3,314 3,778 4,019 3,874
Charged to expense 120 1,153 207  
Release of allowance or Write-offs (584) (1,394) (62)  
Balance, end of the year 3,314 3,778 4,019  
Valuation Allowance of Deferred Tax Assets        
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]        
Balance, beginning of the year 2,079 2,508 2,266 $ 3,227
Charged to expense 0 2 579  
Release of allowance or Write-offs (429) 0 (1,540)  
Transition to the U.S. Tax Cuts and Jobs Act 0 240 0  
Balance, end of the year $ 2,079 $ 2,508 $ 2,266