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Revenue from Contracts with Customers - Disaggregates revenue (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Disaggregation of Revenue [Line Items] |  |  |  |
Leasing revenue | $ 65,730 |  | $ 121,744 |
Gain on sale of leased equipment | 245 | $ 3,527 | 886 | $ 4,509
Revenue | 1,871 |  |  |
Total revenue | 74,303 | 67,844 | 138,196 | 145,791
Spare parts and equipment sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 7,061 |  | 13,347 |
Managed services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 1,252 |  | 2,173 |
Other revenue |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 15 |  | 46 |
Operating Segments | Leasing and Related Operations |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Leasing revenue | 65,730 |  | 121,744 |
Gain on sale of leased equipment | 187 | 3,484 | 767 | 4,440
Total revenue | 67,169 | 61,225 | 124,684 | 132,928
Operating Segments | Leasing and Related Operations | Managed services |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 1,252 |  | 2,173 |
Operating Segments | Spare Parts Sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Gain on sale of leased equipment | 58 | 43 | 119 | 69
Total revenue | 7,329 | 6,828 | 14,789 | 13,199
Operating Segments | Spare Parts Sales | Spare parts and equipment sales |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 7,061 |  | 13,347 |
Operating Segments | Spare Parts Sales | Other revenue |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 210 |  | 1,323 |
Eliminations |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue | (195) | $ (209) | (1,277) | $ (336)
Eliminations | Other revenue |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | $ (195) |  | $ (1,277) |

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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=77892724&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=77911379&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=77892724&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=77902458&loc=d3e39896-112707 + 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 Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 32 -Paragraph 2A -URI http://asc.fasb.org/extlink&oid=82859839&loc=SL82860478-203043 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130539-203045 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130543-203045 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130545-203045 + 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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