SUBSEQUENT EVENTS (Details) (USD $) Share data in Thousands, unless otherwise specified	9 Months Ended				1 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Common stock	Sep. 30, 2014 Fund IV	Oct. 31, 2014 Subsequent Event Public share offering Common stock	Oct. 31, 2014 Subsequent Event Shops At Grand Avenue Queens, NY	Oct. 31, 2014 Subsequent Event 27 E. 61st Street Manhattan, NY Fund IV	Oct. 31, 2014 Subsequent Event 17 East 71st Street Manhattan, NY Fund IV
Subsequent Event [Line Items]
Purchase Price				$ 59,225,000		$ 56,000,000	$ 19,300,000	$ 28,000,000
Common stock issued during the period (in shares)			4,254		3,900
Gross proceeds from issuance of common stock					116,300,000
Proceeds from issuance of common stock	$ 113,749,000	$ 75,765,000			$ 114,800,000