Discontinued Operations and Assets Held for Sale (Tables)

9 Months Ended

Sep. 30, 2011

Discontinued Operations and Disposal Groups [Abstract]

Table Illustration of Number of Properties in Discontinued Operations

	Held for Sale at September 30, 2011	Sold in 2011	Sold in 2010	Total
Office	3	11	11	25
Industrial	0	3	6	9
Retail	0	0	2	2
	3	14	19	36

Table Illustration of Discontinued Operations in Income Statement

	Three Months Ended September 30,						Nine Months Ended September 30,
	2011			2010			2011			2010
Revenues	$	1,341		$	11,385		$	7,506		$	38,276
Operating expenses	(640		)	(4,675		)	(3,751		)	(15,226		)
Depreciation and amortization	(426		)	(3,426		)	(1,678		)	(10,877		)
Operating income	275			3,284			2,077			12,173
Interest expense	(311		)	(2,909		)	(2,107		)	(9,880		)
Income (loss) before gain on sales	(36		)	375			(30		)	2,293
Gain on sale of depreciable properties	2,088			11,527			16,405			24,383
Income from discontinued operations	$	2,052		$	11,902		$	16,375		$	26,676

Allocation of Common Shareholders' Income (Loss) Between Continuing and Discontinued Operations

	Three Months Ended September 30,					Nine Months Ended September 30,
	2011			2010		2011			2010
Income (loss) from continuing operations attributable to common shareholders	$	(34,072	)	$	22,417	$	(29,490	)	$	(49,583	)
Income from discontinued operations attributable to common shareholders	1,996			11,647		15,941			25,992
Net income (loss) attributable to common shareholders	$	(32,076	)	$	34,064	$	(13,549	)	$	(23,591	)

Schedule of Discontinued Operations, Properties Held-for-Sale, Aggregate Balance Sheet Information [Table Text Block]

Real estate investment, net	$	18,466
Other assets	3,526
Total assets held-for-sale	$	21,992
Accrued expenses	$	666
Other liabilities	291
Total liabilities held-for-sale	$	957