Annual report pursuant to Section 13 and 15(d)

Debt - ABL Facility (Narrative) (Details)

v3.20.4
Debt - ABL Facility (Narrative) (Details) - USD ($)
 12 Months Ended
Feb. 14, 2020
Feb. 13, 2020
Dec. 31, 2020
ABL Facility      
Line of Credit Facility [Line Items]      
Borrowing capacity $ 400,000,000.0    
Eligible net trade receivables (as a percent)     85.00%
Eligible letter of credit (as a percent)     100.00%
Outstanding letters of credit     $ 21,300,000
Available borrowing capacity     378,700,000
ABL Facility | Minimum      
Line of Credit Facility [Line Items]      
Basis spread on variable rate (as a percent)   0.75%  
Revolving Credit Facility Accordion Feature      
Line of Credit Facility [Line Items]      
Borrowing capacity $ 100,000,000.0   400,000,000.0
Letter of Credit      
Line of Credit Facility [Line Items]      
Borrowing capacity     $ 50,000,000.0
Basis spread on variable rate (as a percent) 0.75%    
Letter of Credit | Maximum      
Line of Credit Facility [Line Items]      
Basis spread on variable rate (as a percent)   1.00%  
Base Rate | ABL Facility      
Line of Credit Facility [Line Items]      
Basis spread on variable rate (as a percent) 0.25%    
Base Rate | ABL Facility | Minimum      
Line of Credit Facility [Line Items]      
Basis spread on variable rate (as a percent)   0.25%  
Base Rate | ABL Facility | Maximum      
Line of Credit Facility [Line Items]      
Basis spread on variable rate (as a percent)   0.50%  
LIBO Rate | ABL Facility      
Line of Credit Facility [Line Items]      
Basis spread on variable rate (as a percent) 1.25%    
Interest rate floor (as a percent) 0.00%    
LIBO Rate | ABL Facility | Minimum      
Line of Credit Facility [Line Items]      
Basis spread on variable rate (as a percent)   1.25%  
LIBO Rate | ABL Facility | Maximum      
Line of Credit Facility [Line Items]      
Basis spread on variable rate (as a percent)   1.50%