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Indebtedness - Narrative (Details) - USD ($)
12 Months Ended
Nov. 30, 2020
Nov. 27, 2020
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Nov. 24, 2020
Debt Instruments [Abstract]            
Borrowings (Repayments) on Revolving Facility, Net     $ 50,000,000   $ 16,000,000  
Debt covenant, adjusted EBITDA plus lease expense to fixed charges (no greater than)     2.50      
Repayments of Lines of Credit       $ 16,000,000    
Gain (loss) on extinguishment of debt     $ 4,100,000      
Letters of Credit | Subsidiaries [Member]            
Debt Instruments [Abstract]            
Maximum borrowing capacity     $ 20,000,000.0      
DAMI Credit Facility | LIBOR | Revolving Credit Agreement            
Debt Instruments [Abstract]            
Interest rate basis spread (percentage)     1.94%      
Credit Facility, 2014 [Member]            
Debt Instruments [Abstract]            
Debt covenant, total debt to Adjusted EBITDA (no greater than)     3.00      
Term Loan | Revolving Credit Agreement            
Debt Instruments [Abstract]            
Repayments of Lines of Credit $ 225,400,000          
Incremental Facilities            
Debt Instruments [Abstract]            
Maximum borrowing capacity     $ 300,000,000.0      
Swingline Loans on Customary Terms | Subsidiaries [Member]            
Debt Instruments [Abstract]            
Maximum borrowing capacity     25,000,000.0      
Line of Credit | Revolving Credit Agreement            
Debt Instruments [Abstract]            
Maximum borrowing capacity     50,000,000.0     $ 350,000,000.0
Debt instrument, fee amount     $ 2,200,000      
Line of Credit | LIBOR | Minimum            
Debt Instruments [Abstract]            
Interest rate basis spread (percentage)     1.50%      
Line of Credit | LIBOR | Maximum            
Debt Instruments [Abstract]            
Interest rate basis spread (percentage)     2.50%      
Line of Credit | Base Rate            
Debt Instruments [Abstract]            
Interest rate, basis spread, percentage of Base Rate lower than LIBOR     1.00%      
Line of Credit | Credit Facility, 2014 [Member] | Revolving Credit Agreement            
Debt Instruments [Abstract]            
Line of credit amount outstanding     $ 300,000,000.0      
Line of Credit | Credit Facility, 2014 [Member] | Revolving Credit Agreement | Minimum            
Debt Instruments [Abstract]            
Commitment fee for unused balance amount (percentage)     0.20%      
Line of Credit | Credit Facility, 2014 [Member] | Revolving Credit Agreement | Maximum            
Debt Instruments [Abstract]            
Commitment fee for unused balance amount (percentage)     0.35%      
Unsecured Debt            
Debt Instruments [Abstract]            
Repayments of Lines of Credit   $ 61,300,000