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Organization and Summary of Significant Accounting Policies (Fair Value on a Nonrecurring Basis) (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2017 USD ($) engine aircraft | Sep. 30, 2016 USD ($) | Sep. 30, 2017 USD ($) engine aircraft | Sep. 30, 2016 USD ($) engine | Dec. 31, 2016 USD ($)
Assets at fair value and gains (losses) recorded |  |  |  |  |
Equipment held for sale | $ 32,798 |  | $ 32,798 |  | $ 30,710
Asset write-down | 6,958 | $ 1,995 | 22,243 | $ 5,924 |
Additional write-down |  |  |  | 2,000 |
Additional write down to reflect the estimated market value |  |  |  | 1,900 |
Other Income | 2,549 | 1,622 | 6,439 | $ 3,614 |
Gain on insurance settlement |  |  | 1,288 |  |
Engine Parts |  |  |  |  |
Assets at fair value and gains (losses) recorded |  |  |  |  |
Number of engines for which impairment is recorded earlier due to part out and sale | engine |  |  |  | 1 |
Asset write-down |  |  |  | $ 2,000 |
Additional write-down |  |  | 5,500 |  |
Engine and aircraft |  |  |  |  |
Assets at fair value and gains (losses) recorded |  |  |  |  |
Asset write-down |  |  | 16,700 |  |
Nonrecurring |  |  |  |  |
Assets at fair value and gains (losses) recorded |  |  |  |  |
Equipment held for lease | 11,483 | 337 | 11,483 | 337 |
Equipment held for sale | 32,758 | 589 | 32,758 | 589 |
Spare parts inventory | 26,847 | 1,731 | 26,847 | 1,731 |
Assets at fair value | 71,088 | 2,657 | 71,088 | 2,657 |
Total losses on equipment held for lease |  |  | (9,019) | (1,893) |
Total losses on equipment held for sale |  |  | (7,681) | (3,556) |
Total losses on spare parts inventory |  |  | (5,543) | (475) |
Total losses on assets |  |  | (22,243) | (5,924) |
Nonrecurring | Level 2 |  |  |  |  |
Assets at fair value and gains (losses) recorded |  |  |  |  |
Equipment held for lease | 11,483 | 337 | 11,483 | 337 |
Equipment held for sale | 32,758 | 589 | 32,758 | 589 |
Spare parts inventory | 26,847 | 1,731 | 26,847 | 1,731 |
Assets at fair value | $ 71,088 | $ 2,657 | $ 71,088 | $ 2,657 |
Engines and related equipment |  |  |  |  |
Assets at fair value and gains (losses) recorded |  |  |  |  |
Number of engines | engine | 7 |  | 7 |  |
Number of aircraft | aircraft | 3 |  | 3 |  |

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