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Long-term Debt - Narrative (Details) - USD ($)
3 Months Ended 12 Months Ended
Mar. 19, 2020
Oct. 23, 2019
Jul. 23, 2019
Jun. 24, 2019
Oct. 22, 2018
Sep. 28, 2019
Dec. 28, 2019
Dec. 29, 2018
Dec. 30, 2017
Debt Instrument [Line Items]                  
Write off of debt issuance costs           $ 300,000 $ 4,110,000 $ 3,459,000 $ 1,258,000
Write off of loan discounts             1,374,000 0 0
Debt modification costs           $ (200,000) $ (150,000) $ (1,794,000) $ (208,000)
First Lien Credit Agreement | Revolving Credit Facility                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity         $ 100,000,000.0        
Secured leverage ratio             7.00    
Threshold to test ratio             $ 10,000,000.0    
Threshold to test ratio, percentage of revolving credit facility commitments             35.00%    
First Lien Credit Agreement | Revolving Credit Facility | Subsequent Event                  
Debt Instrument [Line Items]                  
Proceeds from revolving credit facility $ 90,000,000.0                
First Lien Credit Agreement | Revolving Credit Facility | Minimum                  
Debt Instrument [Line Items]                  
Commitment fee percentage         0.25%        
First Lien Credit Agreement | Revolving Credit Facility | Maximum                  
Debt Instrument [Line Items]                  
Commitment fee percentage         0.50%        
First Lien Credit Agreement | Letter of Credit                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity         $ 35,000,000.0        
Letters of credit outstanding             $ 3,600,000    
First Lien Credit Agreement | Bridge Loan                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity         20,000,000.0        
Senior Notes | First Lien Credit Agreement                  
Debt Instrument [Line Items]                  
Debt instrument, face amount         725,000,000.0        
Repayments of long-term debt   $ 15,000,000.0   $ 248,000,000.0          
Debt instrument, periodic payment, interest       3,800,000          
Senior Notes | Term Loan Maturing October 22, 2025                  
Debt Instrument [Line Items]                  
Debt instrument, face amount     $ 475,200,000            
Repayments of long-term debt   $ 15,000,000.0              
Interest rate at period end             5.24%    
Senior Notes | Term Loan Maturing October 22, 2025 | Minimum | Eurodollar                  
Debt Instrument [Line Items]                  
Basis spread on variable rate     3.50%            
Senior Notes | Term Loan Maturing October 22, 2025 | Minimum | Base Rate                  
Debt Instrument [Line Items]                  
Basis spread on variable rate     2.50%            
Senior Notes | Term Loan Maturing October 22, 2025 | Maximum | Eurodollar                  
Debt Instrument [Line Items]                  
Basis spread on variable rate     3.25%            
Senior Notes | Term Loan Maturing October 22, 2025 | Maximum | Base Rate                  
Debt Instrument [Line Items]                  
Basis spread on variable rate     2.25%            
Senior Notes | Second Lien Credit Agreement                  
Debt Instrument [Line Items]                  
Debt instrument, face amount         $ 150,000,000.0        
Repayments of long-term debt       150,000,000.0          
Debt instrument, periodic payment, interest       3,600,000          
Write off of debt issuance costs       3,800,000          
Write off of loan discounts       $ 1,400,000