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Long-Term Debt - Summary of Long-Term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Aug. 31, 2022
Debt Instrument [Line Items]
Carrying Value	$ 2,259,654	$ 2,096,978
Long-term Debt, Current Maturities	439,937	152,900
Long-term Debt, Excluding Current Maturities	$ 1,819,717	$ 1,944,078
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Debt and Lease Obligation	Debt and Lease Obligation
Total lease obligations	$ 455,248	$ 494,328
Debt and Lease Obligation	2,282,169	2,120,443
Debt Issuance Costs, Net	$ (22,515)	(23,465)
Minimum
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.44%
Maximum
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.01%
Fixed Rate
Debt Instrument [Line Items]
Notes Payable	$ 1,834,754	$ 1,720,998
Long-term Debt, Weighted Average Interest Rate, at Point in Time	6.30%	6.50%
Variable Rate
Debt Instrument [Line Items]
Notes Payable	$ 424,900	$ 375,980
Long-term Debt, Weighted Average Interest Rate, at Point in Time	7.90%	6.10%
Revolving Credit Facilities Due 2027 \| Revolving Credit Facility
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	$ 200,000	$ 30,327
Debt Instrument, Interest Rate, Stated Percentage	7.97%
Senior Secured Notes Due 2027 \| Senior Notes
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	$ 550,000	700,000
Debt Instrument, Interest Rate, Stated Percentage			7.25%
Senior Secured Notes Due 2027 \| Senior Notes \| Maximum
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.25%
Consolidated Variable Interest Entities Due 2029
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	$ 130,650	79,453
Consolidated Variable Interest Entities Due 2029 \| Minimum
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.92%
Consolidated Variable Interest Entities Due 2029 \| Maximum
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.19%
Secured Debt By Aircraft, Engines, Other Equipment And Real Estate \| Secured Debt
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	$ 596,271	466,335
Secured Debt By Aircraft, Engines, Other Equipment And Real Estate \| Secured Debt \| Minimum
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	1.87%
Secured Debt By Aircraft, Engines, Other Equipment And Real Estate \| Secured Debt \| Maximum
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	8.26%
Construction Loan Agreement Due 2032
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	$ 350,000	$ 350,000
Debt Instrument, Interest Rate, Stated Percentage	5.75%