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Deferred Revenue (Details Textual) (USD $)
6 Months Ended
Jun. 30, 2014
Dec. 31, 2013
Jul. 31, 2004
Deferred Revenue Arrangement [Line Items]      
Real Estate Investments, Joint Ventures     $ 4,000,000
Deferred Revenue 1,235,713 1,467,403  
Deferred Revenue, Revenue Recognition Period 2 years 8 months 12 days    
Corporate Joint Venture [Member]
     
Deferred Revenue Arrangement [Line Items]      
Deferred Revenue     $ 4,000,000