Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues:
Lease income	$ 274,537	$ 277,303
Other property income	2,305	1,982
Management, transaction, and other fees	6,816	6,972
Total revenues	283,658	286,257
Operating expenses:
Depreciation and amortization	89,295	97,194
Operating and maintenance	42,369	40,638
General and administrative	13,705	21,300
Real estate taxes	35,887	34,155
Other operating expenses	1,337	1,134
Total operating expenses	182,593	194,421
Other expense (income):
Interest expense, net	37,436	37,752
Goodwill impairment	132,128	0
Provision for impairment of real estate, net of tax	784	1,672
Gain on sale of real estate, net of tax	(38,005)	(16,490)
Early extinguishment of debt	0	10,591
Net investment loss (income)	4,923	(2,354)
Total other expense (income)	137,266	31,171
(Loss) income from operations before equity in income of investments in real estate partnerships	(36,201)	60,665
Equity in income of investments in real estate partnerships	11,418	30,828
Net (loss) income	(24,783)	91,493
Noncontrolling interests:
Exchangeable operating partnership units	115	(190)
Limited partners’ interests in consolidated partnerships	(664)	(857)
Income attributable to noncontrolling interests	(549)	(1,047)
Net (loss) income attributable to common stockholders	$ (25,332)	$ 90,446
(Loss) income per common share - basic	$ (0.15)	$ 0.54
(Loss) income per common share - diluted	$ (0.15)	$ 0.54
Partnership Interest [Member]
Revenues:
Lease income	$ 274,537	$ 277,303
Other property income	2,305	1,982
Management, transaction, and other fees	6,816	6,972
Total revenues	283,658	286,257
Operating expenses:
Depreciation and amortization	89,295	97,194
Operating and maintenance	42,369	40,638
General and administrative	13,705	21,300
Real estate taxes	35,887	34,155
Other operating expenses	1,337	1,134
Total operating expenses	182,593	194,421
Other expense (income):
Interest expense, net	37,436	37,752
Goodwill impairment	132,128	0
Provision for impairment of real estate, net of tax	784	1,672
Gain on sale of real estate, net of tax	(38,005)	(16,490)
Early extinguishment of debt	0	10,591
Net investment loss (income)	4,923	(2,354)
Total other expense (income)	137,266	31,171
(Loss) income from operations before equity in income of investments in real estate partnerships	(36,201)	60,665
Equity in income of investments in real estate partnerships	11,418	30,828
Net (loss) income	(24,783)	91,493
Noncontrolling interests:
Limited partners’ interests in consolidated partnerships	(664)	(857)
Income attributable to noncontrolling interests	(664)	(857)
Net (loss) income attributable to common unit holders	$ (25,447)	$ 90,636
(Loss) income per common unit - basic	$ (0.15)	$ 0.54
(Loss) income per common unit - diluted	$ (0.15)	$ 0.54