Discontinued Operations and Assets Held for Sale (Tables)

12 Months Ended

Dec. 31, 2019

Discontinued Operations and Disposal Groups [Abstract]

Schedule of Real Estate Properties [Table Text Block]

Real estate assets, excluding assets held-for-sale, consisted of the following (in thousands):

	December 31, 2019		December 31, 2018
Buildings and tenant improvements	$	5,295,336	$	4,980,003
Land and improvements	2,532,541		2,268,343
Other real estate investments (1)	165,500		—
Real estate assets	$	7,993,377	$	7,248,346

(1) Includes real estate assets that we intend to redevelop within a relatively short time frame that are under leaseback to the seller(s) and generating income.

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, 2019	Sold in 2019	Sold in 2018	Sold in 2017	Total
Industrial	—	—	—	—	—
Non-Reportable Rental Operations	—	—	—	81	81
Total properties included in discontinued operations	—	—	—	81	81
Properties excluded from discontinued operations	1	28	15	17	61
Total properties sold or classified as held-for-sale	1	28	15	98	142

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, 2019, 2018 and 2017, respectively (in thousands):

 

	2019		2018			2017
Revenues	$	—	$	117		$	87,185
Operating expenses	—		(9		)	(28,102		)
Depreciation and amortization	—		—			(25,911		)
Operating income	—		108			33,172
Interest expense	—		—			(14,736		)
Income before gain on sales and income taxes	—		108			18,436
Gain on sale of depreciable properties	445		3,792			1,357,778
Income from discontinued operations before income taxes	445		3,900			1,376,214
Income tax expense	—		—			(12,465		)
Income from discontinued operations	$	445	$	3,900		$	1,363,749

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, 2019, 2018 and 2017, respectively (in thousands):

	2019		2018		2017
Income from continuing operations attributable to common shareholders	$	428,531	$	379,865	$	288,075
Income from discontinued operations attributable to common shareholders	441		3,864		1,346,356
Net income attributable to common shareholders	$	428,972	$	383,729	$	1,634,431

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

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

	Held-for-Sale Properties Included in Continuing Operations
	December 31, 2019			December 31, 2018
Land and improvements	$	4,561		$	—
Buildings and tenant improvements	18,840			—
Undeveloped land	—			1,966
Accumulated depreciation	(7,132		)	(884		)
Deferred leasing and other costs, net	2,100			—
Other assets	94			—
Total assets held-for-sale	$	18,463		$	1,082
Total liabilities held-for-sale	$	887		$	—

Asset Impairment Charges [Text Block]

The following table illustrates impairment charges recognized during the years ended December 31, 2019, 2018 and 2017, respectively (in thousands):

	2019		2018		2017
Impairment charges - land	$	—	$	—	$	3,622
Impairment charges - building	—		—		859
Impairment charges	$	—	$	—	$	4,481