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Debt - Other Indebtedness (Details)
6 Months Ended
Nov. 20, 2017
USD ($)
Jun. 28, 2020
USD ($)
Dec. 29, 2019
USD ($)
Nov. 30, 2017
USD ($)
Line of Credit Facility [Line Items]        
Debt outstanding   $ 296,000,000.0 $ 295,100,000  
Principal   300,500,000 300,000,000.0  
Unamortized debt issuance costs   4,500,000 $ 4,900,000  
Finance lease, liability   39,100,000    
Equipment        
Line of Credit Facility [Line Items]        
Finance lease, liability   $ 500,000    
Minimum | Equipment        
Line of Credit Facility [Line Items]        
Finance lease, term of contract   2 years    
Maximum | Equipment        
Line of Credit Facility [Line Items]        
Finance lease, term of contract   6 years    
Senior notes | 6.5% Notes        
Line of Credit Facility [Line Items]        
Stated interest rate   6.50%   6.50%
Debt outstanding   $ 300,000,000.0    
Principal       $ 300,000,000
Revolving Credit Facility        
Line of Credit Facility [Line Items]        
Maturity period 5 years      
Maximum borrowing capacity $ 90,000,000.0      
Potential maximum borrowing capacity, subject to Lender approval $ 115,000,000.0      
Fixed charge coverage ratio 0.50      
Outstanding borrowings   0    
Remaining borrowing capacity   $ 61,200,000    
Revolving Credit Facility | Federal Funds Rate        
Line of Credit Facility [Line Items]        
Basis spread on variable rate   0.50%    
Revolving Credit Facility | LIBOR rate        
Line of Credit Facility [Line Items]        
Basis spread on variable rate   1.00%    
Revolving Credit Facility | Base Rate | Minimum        
Line of Credit Facility [Line Items]        
Basis spread on variable rate   1.00%    
Revolving Credit Facility | Base Rate | Maximum        
Line of Credit Facility [Line Items]        
Basis spread on variable rate   1.50%    
Revolving Credit Facility | Eurodollar Rate | Minimum        
Line of Credit Facility [Line Items]        
Basis spread on variable rate   2.00%    
Revolving Credit Facility | Eurodollar Rate | Maximum        
Line of Credit Facility [Line Items]        
Basis spread on variable rate   2.50%    
Letter of Credit        
Line of Credit Facility [Line Items]        
Maximum borrowing capacity $ 50,000,000.0      
Outstanding borrowings   $ 5,700,000    
Swing Line Loan        
Line of Credit Facility [Line Items]        
Maximum borrowing capacity $ 10,000,000.0