Quarterly report pursuant to Section 13 or 15(d)

Debt - Term Loan Facility (Narrative) (Details)

v3.20.2
Debt - Term Loan Facility (Narrative) (Details) - USD ($)
3 Months Ended 9 Months Ended
May 18, 2020
Feb. 14, 2020
Feb. 13, 2020
Sep. 24, 2020
Jun. 25, 2020
Sep. 26, 2019
Sep. 24, 2020
Sep. 26, 2019
Dec. 26, 2019
Debt Instrument [Line Items]                  
Total minimum debt payments   $ 144,600,000   $ 218,902,000     $ 218,902,000   $ 145,500,000
Proceeds from term loan facility             75,000,000 $ 0  
Fees to creditors             6,882,000 0  
Gain (loss) on extinguishment of debt       0   $ 0 1,015,000 $ 0  
Term Loan Facility Accordion Feature                  
Debt Instrument [Line Items]                  
Borrowing capacity   $ 270,000,000.0              
Borrowing capacity as a percentage of EBITDA   100.00%              
Amended Term Loan Facility                  
Debt Instrument [Line Items]                  
Total minimum debt payments       $ 143,902,000     $ 143,902,000   145,500,000
Consolidated First Lien Leverage Ratio   2.50              
Consolidated Secured Leverage Ratio   3.50              
Consolidated Total Leverage Ratio   3.50              
Applicable interest rate       2.20%     2.20%    
Amended Term Loan Facility | Maximum                  
Debt Instrument [Line Items]                  
Consolidated Total Leverage Ratio   4.50              
Amended Term Loan Facility | Base rate                  
Debt Instrument [Line Items]                  
Basis spread on variable rate 3.00% 1.00%              
Leverage based step-up (as a percent)   1.25%              
Amended Term Loan Facility | Base rate | Maximum                  
Debt Instrument [Line Items]                  
Basis spread on variable rate     1.75%            
Amended Term Loan Facility | Base rate | Minimum                  
Debt Instrument [Line Items]                  
Basis spread on variable rate     1.50%            
Amended Term Loan Facility | Eurodollar rate                  
Debt Instrument [Line Items]                  
Basis spread on variable rate 4.00% 2.00%              
Leverage based step-up (as a percent)   2.25%              
Interest rate floor (as a percent) 1.00% 0.00%              
Amended Term Loan Facility | Eurodollar rate | Maximum                  
Debt Instrument [Line Items]                  
Basis spread on variable rate     2.75%            
Amended Term Loan Facility | Eurodollar rate | Minimum                  
Debt Instrument [Line Items]                  
Basis spread on variable rate     2.50%            
UBS Facility Term Loan B-1                  
Debt Instrument [Line Items]                  
Total minimum debt payments       $ 75,000,000     $ 75,000,000   $ 0
Applicable interest rate       5.00%     5.00%    
Fourth Amendment to Term Loan Facility                  
Debt Instrument [Line Items]                  
Face amount of debt $ 75,000,000.0                
Proceeds from term loan facility 70,500,000                
Original issue discount 4,100,000                
Fees to creditors $ 300,000                
Gain (loss) on extinguishment of debt         $ 1,000,000.0        
Unamortized debt issuance costs         $ 500,000