Discontinued Operations (Details) (USD $)	3 Months Ended		6 Months Ended		0 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	May 09, 2012 Parkway at Oak Hill Buildings
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross sales price					$ 31,300,000
Net sale proceeds					30,500,000
Revenues:
Rental income	0	235,114	0	794,355
Tenant reimbursements	0	293,191	0	622,134
Total revenues	0	528,305	0	1,416,489
Expenses:
Property operating costs	0	228,169	0	595,071
Asset and property management fees:
Related-party	0	50,836	0	128,807
Other	0	0	0	11
Depreciation	0	77,927	0	374,664
Amortization	0	22,876	0	77,426
General and administrative expenses	0	70,928	0	110,180
Total expenses	0	450,736	0	1,286,159
Operating income	0	77,569	0	130,330
Gain on disposition	0	5,634,101	0	5,634,101
Income from Discontinued Operations	$ 0	$ 5,711,670	$ 0	$ 5,764,431