Organization and Summary of Significant Accounting Policies (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Summary of equipment held for sale measured at fair value on nonrecurring basis
Impairment Loss	$ 3,799,947	$ 2,573,256
Fair Value, Measurements, Nonrecurring [Member]
Summary of equipment held for sale measured at fair value on nonrecurring basis
Equipment held for sale/operating lease	422,540	4,751,206
Impairment Loss	3,799,947	2,573,256
Fair Value, Measurements, Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Summary of equipment held for sale measured at fair value on nonrecurring basis
Equipment held for sale/operating lease
Fair Value, Measurements, Nonrecurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Summary of equipment held for sale measured at fair value on nonrecurring basis
Equipment held for sale/operating lease
Fair Value, Measurements, Nonrecurring [Member] | Significant Other Observable Inputs (Level 3) [Member]
Summary of equipment held for sale measured at fair value on nonrecurring basis
Equipment held for sale/operating lease	$ 422,540	$ 4,751,206