Subsequent Events (Details Textual) (USD $)	6 Months Ended
	Jun. 30, 2012
Three Convenience and Fuel Stores [Member]
Business Acquisition, Effective Date of Acquisition	Jul. 19, 2012
Business Acquisition, Cost of Acquired Entity, Purchase Price	$ 14,200,000
Non-Recourse Debt	8,580,000
Interest Rate On Non Recourse Mortgage Debt	6.56%
Auto Service Store [Member]
Business Acquisition, Effective Date of Acquisition	Jul. 25, 2012
Business Acquisition, Cost of Acquired Entity, Purchase Price	$ 2,400,000