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Organization and Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Schedule of Carrying Amounts of Assets Subject to Leases | The following table disaggregates equipment held for operating lease by asset class (in thousands):
| As of December 31,
| 2020 |  | 2019
| Gross value | Accumulated depreciation | Net book value |  | Gross value | Accumulated depreciation | Net book value
| (in thousands)
Engines and related equipment | $ | 2,238,160 |  | $ | (445,780) |  | $ | 1,792,380 |  |  | $ | 1,920,215 |  | $ | (401,776) |  | $ | 1,518,439 |
Aircraft and airframes | 89,613 |  | (7,312) |  | 82,301 |  |  | 133,424 |  | (12,630) |  | 120,794 |
Marine vessel | 12,963 |  | (1,031) |  | 11,932 |  |  | 12,114 |  | (429) |  | 11,685 |
| $ | 2,340,736 |  | $ | (454,123) |  | $ | 1,886,613 |  |  | $ | 2,065,753 |  | $ | (414,835) |  | $ | 1,650,918 |

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