Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Document Fiscal Year Focus	2017
Revenues:
Total revenues	$ 196,131
Other expense (income):
Provision for impairment	0	$ 866
Nonoperating Income (Expense)	200,451
(Loss) income from operations before equity in income of investments in real estate partnerships	(4,320)
Equity in income of investments in real estate partnerships	(28,251)
(Loss) income from operations	(652)
Discontinued operations, net:
Net income attributable to shareholders	415	12,868
Net (loss) income	(20,715)	53,577
Noncontrolling interests:
Net Income (Loss) Available to Common Stockholders, Basic	(33,223)
Parent Company [Member]
Noncontrolling Interest in Net Income (Loss) Operating Partnerships, Redeemable	(19)	85
Revenues:
Minimum rent	141,240	107,674
Percentage rent	2,906	1,703
Recoveries from tenants and other income	45,279	33,487
Management Fees Revenue	6,706	6,764
Total revenues	196,131	149,628
Operating expenses:
Depreciation and amortization	60,053	38,716
Operating and maintenance	29,763	22,685
General and administrative	17,673	16,299
Real estate taxes	21,450	15,870
Other operating expenses (note 2)	71,512	2,306
Total operating expenses	200,451	95,876
Other expense (income):
Interest expense, net	27,199	24,142
Provision for impairment	0	1,666
Marketable Securities, Gain (Loss), Excluding Other than Temporary Impairments	1,097	(155)
Nonoperating Income (Expense)	26,102	25,963
(Loss) income from operations before equity in income of investments in real estate partnerships	(30,422)	27,789
Equity in income of investments in real estate partnerships	9,342	12,920
Income tax (benefit) of taxable REIT subsidiary	50	0
(Loss) income from operations	(21,130)	40,709
Discontinued operations, net:
Net income attributable to shareholders	415	12,868
Net (loss) income	(20,715)	53,577
Noncontrolling interests:
Limited partners’ interests in consolidated partnerships	(671)	(349)
Loss attributable to noncontrolling interests	(652)	(434)
Net (loss) income attributable to the Company	(21,367)	53,143
Preferred stock dividends and issuance costs	(11,856)	(5,266)
Net Income (Loss) Available to Common Stockholders, Basic	$ (33,223)	$ 47,877
Income per common share/unit - basic:
Continuing operations (in dollars per share)	$ (0.26)	$ 0.49
Income per common share/unit - diluted:
Continuing operations (in dollars per share)	$ (0.26)	$ 0.49
Partnership Interest [Member]
Revenues:
Minimum rent	$ 141,240	$ 107,674
Percentage rent	2,906	1,703
Recoveries from tenants and other income	45,279	33,487
Management Fees Revenue	6,706	6,764
Total revenues	196,131	149,628
Operating expenses:
Depreciation and amortization	60,053	38,716
Operating and maintenance	29,763	22,685
General and administrative	17,673	16,299
Real estate taxes	21,450	15,870
Other operating expenses (note 2)	71,512	2,306
Total operating expenses	200,451	95,876
Other expense (income):
Interest expense, net	27,199	24,142
Provision for impairment	0	1,666
Marketable Securities, Gain (Loss), Excluding Other than Temporary Impairments	1,097	(155)
Nonoperating Income (Expense)	26,102	25,963
(Loss) income from operations before equity in income of investments in real estate partnerships	(30,422)	27,789
Equity in income of investments in real estate partnerships	9,342	12,920
Income tax (benefit) of taxable REIT subsidiary	50	0
(Loss) income from operations	(21,130)	40,709
Discontinued operations, net:
Net income attributable to shareholders	415	12,868
Net (loss) income	(20,715)	53,577
Noncontrolling interests:
Limited partners’ interests in consolidated partnerships	(671)	(349)
Loss attributable to noncontrolling interests	(671)	(349)
Net (loss) income attributable to the Company	(21,386)	53,228
Distributions Paid To Preferred Unit Holders	11,856	5,266
Net (loss) income attributable to common unit holders	$ (33,242)	$ 47,962
Income per common share/unit - basic:
Continuing operations (in dollars per share)	$ (0.26)	$ 0.49
Income per common share/unit - diluted:
Continuing operations (in dollars per share)	$ (0.26)	$ 0.49