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Parts and Supplies Inventory (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | --- | ---
Inventory [Line Items] |  |  |
Less: parts and supplies inventory reserve | $ (206) | $ (196) | $ 0
Parts and supplies inventory, net | 6,325 | 5,658 | 5,142
Aircraft parts |  |  |
Inventory [Line Items] |  |  |
Parts and supplies inventory, gross | 5,206 | 5,101 | 4,824
Materials and supplies |  |  |
Inventory [Line Items] |  |  |
Parts and supplies inventory, gross | $ 1,325 | $ 753 | $ 318

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