Debt and Other Obligations - Additional Narrative (Details)	1 Months Ended	3 Months Ended	12 Months Ended
	Dec. 31, 2023 USD ($) aircraft	Dec. 31, 2023 USD ($) aircraft	Dec. 31, 2023 USD ($) aircraft	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Debt Instrument [Line Items]
Repayments of long-term debt			$ 337,500,000	$ 193,000,000
Gain on extinguishment of debt			$ 15,411,000	0	$ (331,630,000)
Number of aircraft unencumbered | aircraft	4	4	4
Current maturities of long-term debt, net, and finance leases	$ 315,580,000	$ 315,580,000	$ 315,580,000	346,888,000
Aircraft Leaseback Transaction
Debt Instrument [Line Items]
Additional sale-leaseback transaction | aircraft	20
Number of aircraft on leases | aircraft	6
Failed aircraft sale leaseback | aircraft	14	14	14
Current maturities of long-term debt, net, and finance leases	$ 458,000,000	$ 458,000,000	$ 458,000,000
Fixed Rate Loans
Debt Instrument [Line Items]
Extinguishment of debt		$ 323,300,000
Gain on extinguishment of debt			$ 15,400,000
Sale leaseback transaction, number of aircraft related to loans | aircraft	16	16	16
Corporate credit cards
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 20,100,000	$ 20,100,000	$ 20,100,000	20,100,000
Line of credit, current	1,500,000	1,500,000	1,500,000	1,800,000
Lines of Credit with Counterparties for Jet Fuel and Derivatives
Debt Instrument [Line Items]
Maximum borrowing capacity	25,000,000	25,000,000	25,000,000	41,500,000
Aircraft fuel
Debt Instrument [Line Items]
Line of credit, current	$ 0	$ 0	$ 0	$ 2,000,000