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Leases - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Lessee, Lease, Description [Line Items]
Aggregate rental expense under all operating aircraft, equipment and facility leases	$ 2,006	$ 3,792	$ 6,848	$ 12,056
Weighted average remaining lease term Operating leases	5 years 8 months 12 days		5 years 8 months 12 days
Weighted average discount rate Operating leases	5.50%		5.50%
Aircraft Equipment And Facility [Member]
Lessee, Lease, Description [Line Items]
Aggregate rental expense under all operating aircraft, equipment and facility leases	$ 1,400	$ 2,600	$ 4,900	$ 6,000

X

- Definition

Amount of lease cost recognized by lessee for lease contract.

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-Section 55
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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X

- Definition

Weighted average discount rate for operating lease calculated at point in time.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 842
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-Section 55
-Paragraph 53
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479589/842-20-55-53

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- Definition

Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 842
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-Section 55
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-URI https://asc.fasb.org/1943274/2147479589/842-20-55-53

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