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Accrued Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Payables and Accruals [Abstract]    
Salaries, wages and benefits $ 174,961 $ 187,723
Federal excise and other passenger taxes and fees payable 118,830 104,447
Airport obligations 99,973 125,278
Aircraft maintenance 31,362 58,800
Interest payable 28,773 24,732
Aircraft and facility lease obligations 22,874 36,115
Fuel 10,942 64,149
Other 89,718 104,054
Other current liabilities $ 577,433 $ 705,298