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Leases - Narrative (Details) $ in Thousands | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2025 USD ($) Aircraft | Mar. 31, 2024 USD ($) | Dec. 31, 2024 USD ($) Aircraft | Dec. 31, 2023 USD ($) Aircraft | Oct. 31, 2024 Aircraft
Lessee, Lease, Description [Line Items] |  |  |  |  |
Number of aircrafts operated | 36 |  | 34 | 42 |
Additional variable costs | $ | $ 4,416 | $ 3,421 | $ 15,198 | $ 12,689 |
Number of aircrafts leased | 2 |  |  |  | 1
Number of aircrafts purchased |  |  | 1 |  |
Minimum |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |
Lease term | 2 years |  | 2 years |  |
Minimum | Charter Flight Services |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |
Lease term | 3 months |  | 3 months |  |
Maximum |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |
Lease term | 30 years |  | 30 years |  |
Maximum | Charter Flight Services |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |
Lease term | 7 years |  | 7 years |  |

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