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v3.19.3.a.u2

Summary of significant accounting policies (Details) $ in Thousands |  | 12 Months Ended |
--- | --- | --- | ---
Jan. 01, 2020 USD ($) | Dec. 31, 2019 USD ($) segment | Jan. 01, 2019 USD ($)
Summary Of Significant Accounting Policies [Line Items] |  |  |
Minimum aircraft age threshold for performance of impairment assessments |  | 5 years |
Number of operating segments | segment |  | 1 |
Number of reportable segments | segment |  | 1 |
Operating lease right of use asset |  | $ 43,668 |
Present value of lease liabilities |  | $ 51,144 |
Flight Equipment |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Estimated useful life of asset, years |  | 25 years |
Percentage of estimates for residual values of original manufacture cost |  | 15.00% |
Accounting Standards Update 2016-02 |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Operating lease right of use asset |  |  | $ 58,000
Present value of lease liabilities |  |  | $ 58,000
Forecast | Accounting Standards Update 2016-13 |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Cumulative effect adjustment to reduce retained earnings | $ 25,000 |  |

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- Definition Amount of the cumulative effect on retained earnings net of related income tax effect. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22663-107794 + Details
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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References No definition available. + Details
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