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Asset impairment (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Mar. 31, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Asset impairment | $ 2,098 | $ 11,803 |  | $ 36,433 | $ 14,228
Net (recoveries) charges related to Ukraine Conflict |  |  | $ 2,700,000 |  |
(Recoveries) write-offs and impairments of flight equipment |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Net (recoveries) charges related to Ukraine Conflict |  |  | $ 3,200,000 |  |

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