Organization and Summary of Significant Accounting Policies (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Summary of equipment held for sale measured at fair value on nonrecurring basis
Loss	$ (2,206,253)
Fair Value, Measurements, Nonrecurring [Member]
Summary of equipment held for sale measured at fair value on nonrecurring basis
Equipment held for sale	7,118,555
Loss	2,206,253
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
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
Fair Value, Measurements, Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Summary of equipment held for sale measured at fair value on nonrecurring basis
Equipment held for sale	$ 7,118,555