Discontinued Operations, Assets Held for Sale and Impairments (Tables)

9 Months Ended

Sep. 30, 2014

Discontinued Operations and Disposal Groups [Abstract]

Table Illustration of Number of Properties in Discontinued Operations

	Held-for-Sale at September 30, 2014	Sold in 2014	Sold in 2013	Total
Industrial	0	11	6	17
Office	0	0	12	12
Medical Office	1	1	6	8
Retail	0	0	1	1
Total properties included in discontinued operations	1	12	25	38
Properties excluded from discontinued operations	2	11	13	26
Total properties sold or classified as held-for-sale	3	23	38	64

Table Illustration of Discontinued Operations in Statement of Operations

	Three Months Ended September 30,						Nine Months Ended September 30,
	2014			2013			2014			2013
Revenues	$	454		$	11,140		$	2,415		$	39,807
Operating expenses	(297		)	(4,144		)	(1,282		)	(14,983		)
Depreciation and amortization	—			(3,247		)	(205		)	(13,969		)
Operating income	157			3,749			928			10,855
Interest expense	(137		)	(2,251		)	(706		)	(9,310		)
Income before gain on sales	20			1,498			222			1,545
Gain on sale of depreciable properties	564			8,441			22,864			101,052
Income from discontinued operations before income taxes	584			9,939			23,086			102,597
Income tax benefit (expense)	555			—			(2,969		)	—
Income from discontinued operations	$	1,139		$	9,939		$	20,117		$	102,597

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

	Three Months Ended September 30,					Nine Months Ended September 30,
	2014		2013			2014		2013
Income (loss) from continuing operations attributable to common shareholders	$	60,408	$	(15,874	)	$	188,048	$	(17,741	)
Income from discontinued operations attributable to common shareholders	1,125		9,807			19,856		101,211
Net income (loss) attributable to common shareholders	$	61,533	$	(6,067	)	$	207,904	$	83,470

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

The following table illustrates aggregate balance sheet information of these properties at September 30, 2014 (in thousands):

	September 30, 2014
	Properties Included in Continuing Operations		Properties Included in Discontinued Operations		Total Held-For-Sale Properties
Real estate investment, net	$	14,940	$	14,643	$	29,583
Other assets	473		5,358		5,831
Total assets held-for-sale	$	15,413	$	20,001	$	35,414
Accrued expenses	$	356	$	262	$	618
Other liabilities	87		—		87
Total liabilities held-for-sale	$	443	$	262	$	705

Asset Impairment Charges [Text Block]

The following table illustrates impairment charges recognized during the three and nine months ended September 30, 2014 and 2013, respectively (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2014		2013		2014		2013
Impairment charges - land	$	5,915	$	—	$	8,438	$	3,777
Impairment charges - building	453		—		453		—
Impairment charges	$	6,368	$	—	$	8,891	$	3,777