ACQUISITION AND DISPOSITION OF PROPERTIES AND DISCONTINUED OPERATIONS Discontinued Operations Results of Operations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
ASSETS
Disposal Group, Including Discontinued Operation, Net Real Estate					$ 8,859
Disposal Group, Including Discontinued Operation, Rents Receivable, Net					245
Disposal Group, Including Discontinued Operation, Deferred Charges, Net of Amortization					249
Disposal Group, Including Discontinued Operation, Prepaid Expenses and Other Assets, Net					46
Assets of discontinued operations	0		0		9,399
LIABILITIES
Disposal Group Including Discontinued Operation Mortgage Notes Payable					8,260
Disposal Group, Including Discontinued Operation, Accounts Payable and Accrued Expenses					188
Disposal Group, Including Discontinued Operation, Other Liabilities					556
Liabilities of discontinued operations	0		0		9,004
STATEMENTS OF OPERATIONS
Total revenues	239	1,744	691	4,330
Total expenses	172	1,012	398	2,702
Operating income	67	732	293	1,628
Impairment of Real Estate	0	(6,925)	0	(6,925)
Gain on sale of property	2,668	28,576	2,668	32,498
Income from discontinued operations	2,735	22,383	2,961	27,201
(Income) from discontinued operations, attributable to noncontrolling interests	(2,413)	3,631	(2,589)	78
Income from discontinued operations, attributable to Common Shareholders	$ 322	$ 26,014	$ 372	$ 27,279