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Long-Term Debt - Summary of Long-Term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Aug. 31, 2022
Debt Instrument [Line Items]
Carrying Value	$ 2,066,504	$ 2,259,654
Long-term Debt, Current Maturities	454,769	439,937
Long-term Debt, Excluding Current Maturities	$ 1,611,735	$ 1,819,717
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Debt and Lease Obligation	Debt and Lease Obligation
Total lease obligations	$ 429,896	$ 455,248
Debt and Lease Obligation	2,083,633	2,282,169
Debt Issuance Costs, Net	$ (17,129)	(22,515)
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	$ 1,481,186	$ 1,834,754
Long-term Debt, Weighted Average Interest Rate, at Point in Time	6.50%	6.30%
Variable Rate
Debt Instrument [Line Items]
Notes Payable	$ 585,318	$ 424,900
Long-term Debt, Weighted Average Interest Rate, at Point in Time	6.80%	7.90%
Revolving Credit Facilities Due 2027 \| Revolving Credit Facility
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	$ 0	$ 200,000
Senior Secured Notes Due 2027 \| Senior Notes
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	$ 550,000	550,000
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	$ 107,959	130,650
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	$ 765,278	596,271
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	8.57%
Construction Loan Agreement Due 2032
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	$ 100,000	350,000
Debt Instrument, Interest Rate, Stated Percentage	5.75%
Long-term Debt \| Unsecured Debt
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	$ 130,500	$ 0
Debt Instrument, Interest Rate, Stated Percentage	6.15%