Discontinued Operations (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Proceeds From Sale Of Property, Plant, and Equipment	$ 650,000
Long-Term Debt, Gross		9,200,000
Disposal Group, Including Discontinued Operation, Revenue	2,767,109	12,628,824	11,545,705
Disposal Group, Including Discontinued Operation, Operating Expense	819,688	17,186,098	5,999,972
Disposal Group, Including Discontinued Operation, Interest Expense	0	1,313,875	1,250,946
Income (Loss) From Discontinued Operations, Net Of Tax, Attributable To Noncontrolling Interest	109,601	(152,167)	369,185
Shopping Center Property One [Member]
Proceeds From Sale Of Property, Plant, and Equipment	7,475,000
Ypsilanti Property [Member] | Subsequent Event [Member]
Proceeds From Sale Of Property, Plant, and Equipment	5,600,000
Segment, Discontinued Operations [Member] | Single Tenant Property [Member]
Proceeds From Sale Of Property, Plant, and Equipment		1,500,000
Segment, Discontinued Operations [Member] | Shopping Center Property [Member]
Proceeds From Sale Of Property, Plant, and Equipment	3,500,000
Segment, Discontinued Operations [Member] | Two Single Tenant Property [Member]
Proceeds From Sale Of Property, Plant, and Equipment	4,460,000	6,500,000
Non-Recourse Debt		$ 5,500,000