ACQUISITION AND DISPOSITION OF REAL ESTATE AND DISCONTINUED OPERATIONS Discontinued Operations Results of Operations (Details) (USD $)	3 Months Ended		6 Months Ended			1 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 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	11,850,000		11,850,000		19,400,000
Rents receivable, net	876,000		876,000		917,000
Deferred charges, net	390,000		390,000		612,000
Prepaid expenses and other assets	190,000		190,000		1,132,000
Total assets of discontinued operations	13,306,000		13,306,000		22,061,000
LIABILITIES
Mortgage notes payable	9,149,000		9,149,000		9,208,000
Accounts payable and accrued expenses	1,794,000		1,794,000		3,125,000
Other liabilities	597,000		597,000		765,000
Total liabilities of discontinued operations	11,540,000		11,540,000		13,098,000
STATEMENTS OF OPERATIONS
Total revenues	906,000	9,943,000	2,075,000	19,656,000
Total expenses	640,000	6,611,000	1,412,000	13,997,000
Operating income	266,000	3,332,000	663,000	5,659,000
Gain on sale of property	4,191,000	2,668,000	4,191,000	2,668,000		4,200,000
Income from discontinued operations	4,457,000	6,000,000	4,854,000	8,327,000
(Income) from discontinued operations, attributable to noncontrolling interests	(3,911,000)	(5,006,000)	(4,259,000)	(6,811,000)
Income from discontinued operations, attributable to Common Shareholders	$ 546,000	$ 994,000	$ 595,000	$ 1,516,000