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Asset impairment (Tables) | 12 Months Ended
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Dec. 31, 2017
Asset Impairment Charges [Abstract] |
Schedule of asset impairment | Asset impairment consisted of the following for the years ended December 31, 2017, 2016 and 2015:
| Year Ended December 31,
| 2017 |  | 2016 |  | 2015
Flight equipment held for operating leases (Note 5) | $ | 54,331 |  |  | $ | 78,335 |  |  | $ | 16,322 |
Flight equipment held for sale | 6,955 |  |  | 3,272 |  |  | — |
Other assets | — |  |  | — |  |  | 13 |
| $ | 61,286 |  |  | $ | 81,607 |  |  | $ | 16,335 |

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