Discontinued Operations and Assets Held for Sale (Tables)

12 Months Ended

Dec. 31, 2016

Discontinued Operations and Disposal Groups [Abstract]

Table Illustration of Number of Properties in Discontinued Operations

The following table illustrates the number of sold or held-for-sale properties included in, or excluded from, discontinued operations:

	Held-for-Sale at December 31, 2016	Sold in 2016	Sold in 2015	Sold in 2014	Total
Industrial	0	0	5	11	16
Medical Office	0	0	1	1	2
Non-reportable Rental Operations	0	0	56	0	56
Total properties included in discontinued operations	0	0	62	12	74
Properties excluded from discontinued operations	5	32	91	17	145
Total properties sold or classified as held-for-sale	5	32	153	29	219

Table Illustration of Discontinued Operations in Income Statement

The following table illustrates the operational results of the buildings reflected in discontinued operations for the years ended December 31, 2016, 2015 and 2014, respectively (in thousands):

	2016		2015			2014
Revenues	$	983	$	32,549		$	120,884
Operating expenses	8		(12,498		)	(47,123		)
Depreciation and amortization	—		(3,517		)	(38,342		)
Operating income	991		16,534			35,419
Interest expense	—		(5,595		)	(24,348		)
Income before gain on sales	991		10,939			11,071
Gain on sale of depreciable properties	1,016		424,892			22,763
Income from discontinued operations before income taxes	2,007		435,831			33,834
Income tax expense	—		(3,175		)	(2,969		)
Income from discontinued operations	$	2,007	$	432,656		$	30,865

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

The following table illustrates the General Partner's share of the income attributable to common shareholders from continuing operations and discontinued operations, reduced by the allocation of income between continuing and discontinued operations to noncontrolling interests, for the years ended December 31, 2016, 2015 and 2014, respectively (in thousands):

	2016		2015		2014
Income from continuing operations attributable to common shareholders	$	310,156	$	187,099	$	174,419
Income from discontinued operations attributable to common shareholders	1,987		428,211		30,474
Net income attributable to common shareholders	$	312,143	$	615,310	$	204,893

Schedule of Discontinued Operations, Properties Held-for-Sale, Aggregate Balance Sheet Information

The following table illustrates aggregate balance sheet information for all held-for-sale properties (in thousands):

	Held-for-Sale Properties Included in Continuing Operations
	December 31, 2016			December 31, 2015
Land and improvements	$	3,631		$	9,797
Buildings and tenant improvements	37,495			39,480
Undeveloped land	22,657			—
Accumulated depreciation	(18,581		)	(7,183		)
Deferred leasing and other costs, net	3,091			3,293
Other assets	3,334			414
Total assets held-for-sale	$	51,627		$	45,801
Accrued expenses	$	1,363		$	322
Other liabilities	298			650
Total liabilities held-for-sale	$	1,661		$	972

Asset Impairment Charges [Text Block]

The following table illustrates impairment charges recognized during the years ended December 31, 2016 and 2015, respectively (in thousands):

	2016		2015		2014
Impairment charges - land	$	14,299	$	19,526	$	33,700
Impairment charges - building	3,719		3,406		15,406
Impairment charges	$	18,018	$	22,932	$	49,106