Investments in Equipment and Leases, Net (Property on Operating Leases) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended			6 Months Ended
Jun. 30, 2013	Jun. 30, 2013 Transportation, Containers [Member]	Jun. 30, 2013 Transportation, Rail [Member]	Jun. 30, 2013 Marine Vessels [Member]	Jun. 30, 2013 Transportation, Other [Member]	Dec. 31, 2012 Transportation, Other [Member]	Jun. 30, 2013 Total Property Subject to or Available For Operating Lease [Member]	Jun. 30, 2013 Less Accumulated Depreciation [Member]
Property Subject to or Available for Operating Lease [Line Items]
Balance December 31, 2012	$ 6,230	$ 19,380	$ 13,125	$ 4,793	$ 640	$ 640	$ 37,938	$ (31,708)
Additions	(338)							(338)
Reclassifications or Dispositions	(825)	(595)	(1,041)	(4,793)			(6,429)	5,604
Balance June 30, 2013	$ 5,067	$ 18,785	$ 12,084		$ 640	$ 640	$ 31,509	$ (26,442)

The amount of property, by major property class, net of accumulated depreciation, 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 Statement of Financial Accounting Standard (FAS)

-Number 13

-Paragraph 23

-Subparagraph b(i)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 13

-Paragraph 19

-Subparagraph a

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Name:	us-gaap_PropertySubjectToOrAvailableForOperatingLeaseNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant