Other Current Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Mar. 13, 2025	Dec. 31, 2024
Payables and Accruals [Abstract]
Salaries, wages and benefits	$ 151,353		$ 187,626
Federal excise and other passenger taxes and fees payable	89,278		110,141
Airport obligations	52,153		66,518
Aircraft maintenance	45,623		103,133
Interest payable	12,584		26,780
Aircraft and facility lease obligations	12,497		23,926
Fuel	3,419		5,202
Backstop premium obligation	0		35,000
Other	60,232		47,513
Other current liabilities	$ 427,139	$ 582,249	$ 605,839

Accrued Aircraft Maintenance Liabilities, Current

No definition available.

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- Definition

Accrued Airport Liabilities, Current

+ References

No definition available.

+ Details

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- Definition

Accrued Backstop Premium Obligation, Current

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Accrued Fuel Costs, Current

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

Federal Excise and Other Passenger Taxes and Fees Payable, Current

+ References

No definition available.

+ Details

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for contractual rent under lease arrangements. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(20))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 8
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483467/210-10-45-8

+ Details

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- Definition

Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

+ Details

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Period Type:	instant

- Definition

Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of liabilities classified as other, due within one year or the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(20))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481372/852-10-55-10

+ Details

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Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

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