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Leases - Additional Information (Details) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2025 USD ($) Aircraft | Jun. 30, 2024 USD ($) | Jun. 30, 2025 USD ($) Aircraft | Jun. 30, 2024 USD ($) | Dec. 31, 2024 USD ($) Aircraft | Dec. 31, 2023 USD ($) Aircraft | Oct. 31, 2024 Aircraft
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |
Number of aircrafts operated |  |  | 35 |  | 34 | 42 |
Additional variable costs | $ | $ 6,355 | $ 4,818 | $ 10,771 | $ 8,239 | $ 15,198 | $ 12,689 |
Number of aircrafts leased | 2 |  | 2 |  |  |  | 1
Number of aircrafts purchased |  |  |  |  | 1 |  |
Minimum |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |
Lease term | 2 years |  | 2 years |  | 2 years |  |
Minimum | Charter Flight Services |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |
Lease term | 3 months |  | 3 months |  | 3 months |  |
Maximum |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |
Lease term | 30 years |  | 30 years |  | 30 years |  |
Maximum | Charter Flight Services |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |
Lease term | 7 years |  | 7 years |  | 7 years |  |

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- Definition Term of lessee's 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/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-3 + Details
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- Definition Amount of variable lease cost, excluded from lease liability, recognized when obligation for payment is incurred for finance and operating leases. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 53 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479589/842-20-55-53 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
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