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General (Guggenheim Transaction) (Narrative) (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 USD ($) item | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) item
Variable Interest Entity [Line Items] |  |  |
Number of aircraft | item | 1,109 |  |
Gain on sale of assets | $ | $ 183,328 | $ 37,497 | $ 41,873
Guggenheim [Member] |  |  |
Variable Interest Entity [Line Items] |  |  |
Ownership percentage |  |  | 19.00%
Gain on sale of assets | $ |  |  | $ 10,500
Boeing 737-800 Aircraft [Member] | Guggenheim [Member] |  |  |
Variable Interest Entity [Line Items] |  |  |
Number of aircraft | item |  |  | 8

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- Definition Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 + Details
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- Definition Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 5A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=52262685&loc=SL6759159-111685 + Details
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- Details
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- Details
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