Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt - Key Terms of Credit Agreement (Details)

v3.21.2
Long-Term Debt - Key Terms of Credit Agreement (Details) - USD ($)
$ in Thousands
6 Months Ended
Mar. 15, 2021
Mar. 08, 2021
Mar. 07, 2021
Jun. 30, 2021
Dec. 31, 2020
Long-Term Debt          
Amount outstanding       $ 717,539  
Debt Instrument Redemption Option One | Prior to March 15, 2024          
Long-Term Debt          
Redemption price as a percentage of principal       100.00%  
Debt Instrument Redemption Option Two | Prior to March 15, 2024          
Long-Term Debt          
Redemption price as a percentage of principal       103.625%  
Debt instrument, conditional redemption, threshold percentage of aggregate principal amount originally issued remains outstanding       60.00%  
Debt Instrument Redemption Option Two | Maximum | Prior to March 15, 2024          
Long-Term Debt          
Redemption price, percentage of principal amount redeemed       40.00%  
Revolving credit facility          
Long-Term Debt          
Availability       $ 450,000 $ 450,000
Term Loan Facility          
Long-Term Debt          
Amount outstanding       296,250 288,750
Senior Notes          
Long-Term Debt          
Amount outstanding       400,000  
Equipment Notes          
Long-Term Debt          
Principal amount of debt         41,600
Amount outstanding       21,289 $ 25,451
Equipment notes issued       $ 0  
Debt term       5 years  
Equipment Notes | Minimum          
Long-Term Debt          
Interest rate (as a percent)       2.80%  
Equipment Notes | Maximum          
Long-Term Debt          
Interest rate (as a percent)       4.40%  
Amended Credit Agreement          
Long-Term Debt          
Additional term loan and/or revolver capacity available under incremental facility       $ 300,000  
Scheduled maturity date       Mar. 20, 2026  
Amended Credit Agreement | Minimum          
Long-Term Debt          
Commitment fee (as a percent)       0.15%  
Amended Credit Agreement | Maximum          
Long-Term Debt          
Commitment fee (as a percent)       0.275%  
Amended Credit Agreement | Base Rate          
Long-Term Debt          
Debt instrument, floor rate   1.00% 1.50%    
Amended Credit Agreement | Eurodollar          
Long-Term Debt          
Debt instrument, floor rate   0.00% 0.50%    
Amended Credit Agreement | Base Rate Borrowings | Minimum          
Long-Term Debt          
Applicable margin based on total leverage ratio       0.00%  
Amended Credit Agreement | Base Rate Borrowings | Maximum          
Long-Term Debt          
Applicable margin based on total leverage ratio       1.00%  
Amended Credit Agreement | Base Rate Borrowings | Federal Funds Rate          
Long-Term Debt          
Basis spread       0.50%  
Amended Credit Agreement | Base Rate Borrowings | LIBOR          
Long-Term Debt          
Basis spread       1.00%  
Maturity of the reference rate       1 month  
Amended Credit Agreement | LIBOR Rate Borrowings          
Long-Term Debt          
Interest rate floor (as a percent)       0.00%  
Amended Credit Agreement | LIBOR Rate Borrowings | Minimum          
Long-Term Debt          
Applicable margin based on total leverage ratio       1.00%  
Amended Credit Agreement | LIBOR Rate Borrowings | Maximum          
Long-Term Debt          
Applicable margin based on total leverage ratio       2.50%  
Amended Credit Agreement | Revolving credit facility          
Long-Term Debt          
Availability   $ 450,000   $ 450,000  
Sublimit for issuance of letters of credit under Revolving Facility*   100,000   100,000  
Sublimit for swingline loans under Revolving Facility*   35,000   $ 35,000  
Interest rate       1.09%  
Amended Credit Agreement | Term Loan Facility          
Long-Term Debt          
Availability   $ 300,000   $ 300,000  
Amended Credit Agreement | Senior Notes | Change in Control Scenario          
Long-Term Debt          
Redemption price as a percentage of principal       101.00%  
Senior Notes Due 2029 | Senior Notes          
Long-Term Debt          
Interest rate 3.625%        
Interest rate (as a percent) 3.625%        
Principal amount of debt $ 400,000        
Senior Notes Due 2026 | Senior Notes          
Long-Term Debt          
Interest rate (as a percent) 5.625%        
Principal amount of debt $ 400,000        
Redemption price, percentage of principal amount redeemed 100.00%