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Long-Term Debt - Summary of Long-Term Debt (Detail) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Debt Instrument [Line Items]    
Debt instrument carrying amount $ 1,688,881 $ 1,642,445
Unamortized debt discount/premium and debt issuance costs (16,638) (18,205)
Long-term debt and capital lease obligation 1,672,243 1,624,240
Less: current maturities of long-term debt and lease obligations 14,134 27,335
Long-term debt, net of current maturities 1,658,109 1,596,905
2026 Revolving Credit Facility    
Debt Instrument [Line Items]    
Debt instrument carrying amount 225,000 75,000
2027 Notes    
Debt Instrument [Line Items]    
Debt instrument carrying amount 695,000 777,500
2030 Notes    
Debt Instrument [Line Items]    
Debt instrument carrying amount 550,000 550,000
Other Finance Obligations    
Debt Instrument [Line Items]    
Debt instrument carrying amount 211,167 216,072
Finance Lease Obligations    
Debt Instrument [Line Items]    
Debt instrument carrying amount $ 7,714 $ 23,873