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Revenue from Contracts with Customers - Disaggregates revenue (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2018 | Mar. 31, 2017
Revenue from Contracts with Customers |  |
Leasing revenue | $ 56,014 |
Gain on sale of leased equipment | 640 | $ 983
Revenue | 1,882 |
Total revenue | 63,892 | 77,946
Spare parts and equipment sales |  |
Revenue from Contracts with Customers |  |
Revenue | 6,286 |
Managed services |  |
Revenue from Contracts with Customers |  |
Revenue | 921 |
Other revenue |  |
Revenue from Contracts with Customers |  |
Revenue | 31 |
Operating Segments | Leasing and Related Operations |  |
Revenue from Contracts with Customers |  |
Leasing revenue | 56,014 |
Gain on sale of leased equipment | 640 | 983
Total revenue | 57,575 | 71,727
Operating Segments | Leasing and Related Operations | Managed services |  |
Revenue from Contracts with Customers |  |
Revenue | 921 |
Operating Segments | Spare Parts Sales |  |
Revenue from Contracts with Customers |  |
Total revenue | 7,399 | 6,346
Operating Segments | Spare Parts Sales | Spare parts and equipment sales |  |
Revenue from Contracts with Customers |  |
Revenue | 6,286 |
Operating Segments | Spare Parts Sales | Other revenue |  |
Revenue from Contracts with Customers |  |
Revenue | 1,113 |
Eliminations |  |
Revenue from Contracts with Customers |  |
Total revenue | (1,082) | $ (127)
Eliminations | Other revenue |  |
Revenue from Contracts with Customers |  |
Revenue | $ (1,082) |

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- Definition The net gain (loss) arising from the lessor's sale of assets held- or available-for-lease under contractual arrangements classified as operating leases. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 40 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=68074852&loc=d3e41205-112714 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 40 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6455249&loc=d3e44908-112734 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 40 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=68074852&loc=d3e41188-112714 + Details
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- Definition The total amount of revenue recognized for the period from operating leases, including minimum lease revenue, contingent revenue, percentage revenue and sublease revenue. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7501430&loc=d3e39896-112707 + Details
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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- Definition Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise. + References No definition available. + Details
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