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Mortgages Payable Footnote Tagging (Details) (USD $)					3 Months Ended
Mortgages Payable Footnote Tagging (Details) (USD $)	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2013 Consolidated Properties [Member]	Dec. 31, 2012 Consolidated Properties [Member]	Mar. 31, 2013 Maples on 97th [Member]
Mortgages payable	$ 46,558,021	$ 39,119,507	$ 46,600,000	$ 39,100,000	$ 7,500,000
Debt Instrument, Interest Rate, Stated Percentage					3.60%
Long Term Debt, Maturity date at a point in time					Feb. 10, 2016

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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