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Long-Term Debt - Summary of Long-Term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024	Aug. 31, 2022
Debt Instrument [Line Items]
Carrying Value	$ 1,799,616	$ 2,066,504
Long-term Debt, Current Maturities	118,075	454,769
Long-term Debt, Excluding Current Maturities	$ 1,681,541	$ 1,611,735
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Debt and Lease Obligation	Debt and Lease Obligation
Total lease obligations	$ 403,060	$ 429,896
Debt and Lease Obligation	1,816,264	2,083,633
Debt Issuance Costs, Net	$ (16,648)	(17,129)
Minimum
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.44%
Maximum
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.02%
Fixed Rate
Debt Instrument [Line Items]
Notes Payable	$ 1,062,935	$ 1,481,186
Long-term Debt, Weighted Average Interest Rate, at Point in Time	6.70%	6.50%
Variable Rate
Debt Instrument [Line Items]
Notes Payable	$ 736,681	$ 585,318
Long-term Debt, Weighted Average Interest Rate, at Point in Time	5.90%	6.80%
Revolving Credit Facilities Due 2027 | Revolving Credit Facility
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	$ 0	$ 0
Senior Secured Notes Due 2027 | Senior Notes
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	$ 403,009	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	$ 95,111	107,959
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	$ 915,084	765,278
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	7.93%
Construction Loan Agreement Due 2032
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	$ 0	100,000
Long-term Debt | Unsecured Debt
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	$ 0	$ 130,500

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