ACQUISITION AND DISPOSITION OF REAL ESTATE AND DISCONTINUED OPERATIONS Discontinued Operations Results of Operations (Details) (USD $)	3 Months Ended		9 Months Ended			1 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	May 31, 2013 Fund II Pelham Manor [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of real estate						$ 11,900,000
ASSETS
Net real estate	187,954,000		187,954,000		197,669,000
Cash in escrow	3,450,000		3,450,000		3,088,000
Rents receivable, net	11,909,000		11,909,000		12,257,000
Deferred charges, net of amortization	8,435,000		8,435,000		9,046,000
Acquired lease intangibles, net	3,196,000		3,196,000		3,399,000
Prepaid expenses and other assets, net	1,559,000		1,559,000		1,205,000
Total assets of discontinued operations	216,503,000		216,503,000		226,664,000
LIABILITIES
Mortgage notes payable	121,426,000		121,426,000		133,213,000
Accounts payable and accrued expenses	3,088,000		3,088,000		4,997,000
Other liabilities	7,517,000		7,517,000		7,861,000
Total liabilities of discontinued operations	132,031,000		132,031,000		146,071,000
STATEMENTS OF OPERATIONS
Total revenues	6,439,000	15,466,000	20,176,000	44,623,000
Total expenses	3,604,000	13,307,000	14,076,000	35,593,000
Operating income	2,835,000	2,159,000	6,100,000	9,030,000
Gain on sale of property	0	5,917,000	4,191,000	8,585,000		4,200,000
Income from discontinued operations	2,835,000	8,076,000	10,291,000	17,615,000
Income from discontinued operations attributable to noncontrolling interests	(2,208,000)	(6,297,000)	(8,459,000)	(13,998,000)
Income from discontinued operations attributable to Common Shareholders	$ 627,000	$ 1,779,000	$ 1,832,000	$ 3,617,000