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Flight equipment held for sale (Details) $ in Thousands | Dec. 31, 2021 USD ($) aircraft | Dec. 31, 2020 USD ($)
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Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Net book value of flight equipment held for sale | $ 304,362 | $ 0
Flight equipment held-for-sale |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |
Number of aircraft held for sale | aircraft | 13 |
Net book value of flight equipment held for sale | $ 304,400 |
Maintenance and security deposit received from the lessee to be assumed by the buyers of the aircraft | $ 16,400 |

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