Deferred Revenue (Details Textual) (USD $)	12 Months Ended			1 Months Ended	3 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Jul. 31, 2004 Joint Venture Properties [Member]	Jul. 31, 2004 Ann Arbor and Boynton Beach [Member]	Sep. 30, 2011 Ann Arbor and Michigan [Member]
Deferred Revenue	$ 1,930,783	$ 2,394,163
Repayment Of Capital Contribution , Joint Venture				13,800,000
Assets	370,092,832	293,943,958	13,800,000
Deferred Revenue, Revenue Recognized					$ 5,700,000
Deferred Revenue Recognition Period	4 years 1 month 6 days