Investment in Equipment and Leases, Net (Property on Operating Leases) (Details) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2017	Dec. 31, 2016
Property Subject to or Available for Operating Lease [Line Items]
Property on operating leases, gross	$ 20,991	$ 22,092
Less accumulated depreciation	(18,416)	(19,335)
Property on operating leases, net	2,575	2,757
Additions, less accumulated depreciation	(90)
Additions, net	(90)
Reclassifications or dispositions, gross	(1,101)
Reclassifications or dispositions, less accumulated depreciation	1,009
Reclassifications or dispositions, net	(92)
Transportation, Rail [Member]
Property Subject to or Available for Operating Lease [Line Items]
Property on operating leases, gross	14,966	15,111
Reclassifications or dispositions, gross	(145)
Transportation, Containers [Member]
Property Subject to or Available for Operating Lease [Line Items]
Property on operating leases, gross	6,015	6,970
Reclassifications or dispositions, gross	(955)
Aviation [Member]
Property Subject to or Available for Operating Lease [Line Items]
Property on operating leases, gross	10	$ 11
Reclassifications or dispositions, gross	$ (1)

The amount of accumulated depreciation, by major property class, recorded on property subject to or available for lease as of the balance sheet date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6453916&loc=d3e41460-112716

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- Definition

Amount before accumulated depreciation of physical assets used in the normal conduct of business to produce goods and services subject to or available for lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6453916&loc=d3e41457-112716

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

The amount of property, by major property class, net of accumulated depreciation, subject to or available for lease as of the balance sheet date.

+ References

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- Definition

Property subject to or available for operating lease accumulated depreciation, additions.

+ References

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- Definition

Property subject to or available for operating lease accumulated depreciation, reclassifications or dispositions.

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Property subject to or available for operating lease, additions.

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Property subject to or available for operating lease, reclassifications or dispositions.

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- Definition

Property subject to or available for operating lease reclassifications or dispositions, gross.

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