NOTES PAYABLE (Details) (USD $)	9 Months Ended					0 Months Ended			0 Months Ended			0 Months Ended						9 Months Ended		0 Months Ended			0 Months Ended			0 Months Ended				0 Months Ended		9 Months Ended
	Sep. 30, 2013 item	Dec. 31, 2012	Sep. 30, 2013 Commercial Site in Johns Creek	Dec. 31, 2012 Commercial Site in Johns Creek	Dec. 31, 2012 Spectrum retail center	Apr. 24, 2013 Bradley Park	Sep. 30, 2013 Bradley Park	Dec. 31, 2012 Bradley Park	Apr. 24, 2013 Bradley Park Commencing on April 1, 2014	Apr. 24, 2013 Bradley Park Floor Commencing on April 1, 2014	Dec. 31, 2012 Peachtree Parkway land loan	Jul. 20, 2013 Northridge land loan	Jul. 19, 2013 Northridge land loan	Dec. 31, 2012 Northridge land loan	Sep. 30, 2013 Land loans for real estate assets held for sale	Dec. 31, 2012 Land loans for real estate assets held for sale	Sep. 30, 2013 North Springs property	Sep. 30, 2013 Bassett Retail Center	Dec. 31, 2012 Bassett Retail Center	Apr. 24, 2013 Northridge Office Building	Sep. 30, 2013 Northridge Office Building	Dec. 31, 2012 Northridge Office Building	Apr. 24, 2013 Northridge Office Building Commencing on January 1, 2014	Apr. 24, 2013 Northridge Office Building Floor	Apr. 24, 2013 Northridge Office Building Floor Commencing on January 1, 2014	Sep. 27, 2013 Highway 20	Sep. 30, 2013 Highway 20	Dec. 31, 2012 Highway 20	Sep. 27, 2013 Highway 20 Commercial Site in Johns Creek acre	Sep. 27, 2013 Highway 20 Prime rate	Jul. 18, 2013 North Springs Land Loan item	Sep. 30, 2013 North Springs Land Loan
NOTES PAYABLE
Number of types of debt	2
Number of nonrecourse mortgage loans on real estate	2
Interest rate (as a percent)							3.68%										13.00%	8.47%			4.75%						5.00%
Mortgage notes, principal outstanding	$ 2,406,883	$ 2,426,003			$ 4,691,528													$ 2,406,883	$ 2,426,003		$ 2,432,943	$ 2,538,334
Totals	4,839,826	9,655,865
Interest rate on default (as a percent)																		13.47%
Land Loans, principal outstanding	5,615,000	5,910,000					3,000,000	3,000,000																			2,615,000	2,910,000
Principal Outstanding	7,932,943	11,538,534									7,000,200			2,000,000	5,500,000	9,000,200	5,500,000
Loan secured by land parcel	11,115,000	14,910,200
Principal payment												2,000,000														250,000
Interest reserve																										130,000					755,000
Face amount of land loan closed																															5,500,000
Origination fee (as a percent)																															3.00%
Number of quarterly extensions																															2
Period of quarterly extensions																															3 months	3 months
Extension fee (as a percent)																															1.00%
Exit fee to lenders (as a percent)																															1.00%
Extension date						Aug. 10, 2014														Aug. 10, 2014
Interest rate (as a percent)										4.75%														4.75%	5.25%						13.00%
Fixed principal repayment per month																				10,410						5,000
Variable rate basis						30-day LIBOR			30-day LIBOR											30-day LIBOR			30-day LIBOR							Prime rate
Spread on variable rate basis (as a percent)						3.50%			3.50%											3.00%			3.00%							1.75%
Interest rate floor (as a percent)																										5.00%
Security interest in area of land (in acres)																													1
Book value of property	19,058,347	25,299,875	500,000	500,000									4,373,789								3,184,558
Maturing short-term debt
Number of loans maturing within the next 12 months	4
Total principal balance that mature within the next 12 months	$ 13,532,533