Discontinued Operations (Details Textual) (USD $)	12 Months Ended				0 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Ypsilanti Property [Member]	Jan. 15, 2014 Ironwood Property [Member] Subsequent Event [Member]	Dec. 31, 2012 Segment, Discontinued Operations [Member] Shopping Center Property [Member]	Dec. 31, 2012 Segment, Discontinued Operations [Member] Two Single Tenant Property [Member]	Dec. 31, 2012 Segment, Discontinued Operations [Member] Shopping Center Property One [Member]	Dec. 31, 2012 Segment, Discontinued Operations [Member] Vacant Office Property [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds From Sale Of Property, Plant, and Equipment				$ 5,600,000	$ 5,000,000	$ 3,500,000	$ 4,460,000	$ 7,475,000	$ 650,000
Long-Term Debt, Gross			9,200,000
Disposal Group, Including Discontinued Operation, Revenue	1,290,601	3,932,462	13,773,597
Disposal Group, Including Discontinued Operation, Operating Expense	992,259	1,665,533	17,730,409
Disposal Group, Including Discontinued Operation, Interest Expense	0	0	1,313,875
Income (Loss) From Discontinued Operations, Net Of Tax, Attributable To Noncontrolling Interest	$ 31,953	$ 129,993	$ (131,621)