Geographic Information (Details 1) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Long-lived assets:
Investment in finance leases, net	$ 7,528,949	$ 6,840,590
Investments in equipment subject to operating leases, net	2,602,383	1,080,834
Residual value investments in equipment on lease	4,501,875	2,001,875
Convertible promissory note, including accrued interest	1,550,000
Equipment notes receivable, including accrued interest	8,308,035	3,306,391
United States
Long-lived assets:
Investment in finance leases, net	447,245
Investments in equipment subject to operating leases, net	1,815,887	1,080,834
Residual value investments in equipment on lease	1,367,173	1,367,173
Convertible promissory note, including accrued interest	1,550,000
Equipment notes receivable, including accrued interest
Europe
Long-lived assets:
Investment in finance leases, net	7,081,704	6,840,590
Investments in equipment subject to operating leases, net	450,193
Residual value investments in equipment on lease	3,134,702	634,702
Convertible promissory note, including accrued interest
Equipment notes receivable, including accrued interest	8,308,035	3,306,391
Australia
Long-lived assets:
Investment in finance leases, net
Investments in equipment subject to operating leases, net	336,303
Residual value investments in equipment on lease
Convertible promissory note, including accrued interest
Equipment notes receivable, including accrued interest