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Subsequent Events (Details) $ in Thousands |  |  |  | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Feb. 20, 2019 USD ($) aircraft | Jan. 22, 2019 USD ($) aircraft | Jan. 11, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Feb. 28, 2019 USD ($)
Subsequent Event [Line Items] |  |  |  |  |  |  |
Cash payment |  |  |  | $ 1,062,380 | $ 661,176 | $ 1,138,963 |
Authorized repurchase amount |  |  |  |  |  |  | $ 250,000
Subsequent event | Early Lease Buyout Agreement |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Cash payment | $ 111,700 |  |  |  |  |  |
Subsequent event | ExpressJet | Asset Purchase Agreement |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Proceeds from sale of equipment |  |  | $ 60,000 |  |  |  |
Subsequent event | ExpressJet | Stock Purchase Agreement |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Cash received from stock sale |  | $ 16,000 |  |  |  |  |
Amount loaned to Kair Enterprises, Inc |  | $ 26,000 |  |  |  |  |
Lease term (in years) |  | 5 years |  |  |  |  |
CRJ 700 | Subsequent event | Early Lease Buyout Agreement |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Number of aircraft in early lease buyout | aircraft | 16 |  |  |  |  |  |
CRJ 200 | Subsequent event | Early Lease Buyout Agreement |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Number of aircraft in early lease buyout | aircraft | 36 |  |  |  |  |  |
CRJ 200 | Subsequent event | ExpressJet | Stock Purchase Agreement |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Number of aircraft agreed to lease | aircraft |  | 16 |  |  |  |  |

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- Definition Amount loaned to facilitate payment of the purchase price for the Stock Sale. + References No definition available. + Details
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- Definition Term of lessor's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=77888428&loc=SL77919359-209981 + Details
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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
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