Deferred Revenue (Details Textual) (USD $)	12 Months Ended			3 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Jul. 31, 2004	Sep. 30, 2011 Ann Arbor, Mi [Member]	Jul. 31, 2004 Ann Arbor, Mi [Member]	Jul. 31, 2004 Corporate Joint Venture [Member]
Deferred Revenue Arrangement [Line Items]
Deferred Revenue	$ 1,467,403	$ 1,930,783			$ 9,800,000	$ 4,000,000
Deferred Revenue, Revenue Recognized				5,700,000
Deferred Revenue Recognition Period	3 years 2 months 12 days
Real Estate Investments, Joint Ventures			$ 4,000,000		$ 9,800,000