ORGANIZATION (Details)	Jul. 31, 2013
ORGANIZATION [Abstract]
Percentage of ordinary taxable income that must be distributed to shareholders (in hundredths)	90.00%
Multi-family residential properties [Member]
Real Estate Properties [Line Items]
Number of real estate properties	88
Number of apartment units owned	10,351
Commercial properties [Member]
Real Estate Properties [Line Items]
Number of real estate properties	175
Net rentable area (in square feet)	12,000,000