RENTAL PROPERTIES (Details 3) (USD $)	12 Months Ended				1 Months Ended		1 Months Ended		1 Months Ended		1 Months Ended		12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Mortgages payable	May 31, 2011 Avon Street Apartments Residential apartment complex	May 18, 2011 Avon Street Apartments Residential apartment complex item	Jul. 31, 2011 Battle Green Apartments Mortgages payable	Jul. 27, 2011 Battle Green Apartments Mortgages payable	Jun. 30, 2011 Battle Green Apartments Residential apartment complex	Jun. 02, 2011 Battle Green Apartments Residential apartment complex item	Jul. 31, 2011 Battle Green Apartments Harold Brown Mortgages payable	Jun. 30, 2011 Battle Green Apartments Harold Brown Mortgages payable	Dec. 31, 2011 Battle Green Apartments Harold Brown Mortgages payable	Jun. 02, 2011 Battle Green Apartments Harold Brown Mortgages payable
RENTAL PROPERTIES
Number of units						66				48
Sales price of real estate properties					$ 8,750,000
Gain on sale of property					7,700,000
Net proceeds from sale of property		8,297,928			5,444,000
Purchase price of real estate properties									10,000,000
Borrowings							5,000,000					3,998,573
Interest rate (as a percent)								4.95%						6.00%
Term of debt												4 years
Notice period demanding early payment												6 months
Amortization period of debt							30 years
Deferred financing cost associated with mortgage								100,000
Effective interest rate (as a percent)	5.65%			5.63%				5.07%
Repayment of debt											3,998,573
Amount returned to partnership											1,000,000
Interest paid	$ 7,776,000	$ 8,011,000	$ 8,182,000										$ 38,123