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Leases - Lease liabilities (Detail) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Disclosure Of Lease Liabilities [Line Items]    
Current portion of lease liability $ 68,304 $ 80,084
Long-term lease liability 215,353 158,289
Lease liabilities 283,657 238,373
Aircraft    
Disclosure Of Lease Liabilities [Line Items]    
Current portion of lease liability 62,234 74,906
Long-term lease liability $ 196,873 $ 135,609