Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020		Sep. 30, 2019
Revenues
Revenues from rental properties, net		$ 256,607	$ 279,181	$ 778,572	[1]	$ 850,525	[1]
Management and other fee income		3,185	3,690	9,880		12,229
Total revenues		259,792	282,871	788,452		862,754
Operating expenses
Rent		(2,767)	(2,836)	(8,429)		(8,452)
Real estate taxes		(40,403)	(37,519)	(118,733)		(113,871)
Operating and maintenance		(42,844)	(39,758)	(124,192)		(123,871)
General and administrative		(28,795)	(23,832)	(72,316)		(72,296)
Impairment charges		397	19,609	3,509		41,235
Depreciation and amortization		(71,704)	(68,874)	(214,660)		(209,440)
Total operating expenses		(186,910)	(192,428)	(541,839)		(569,165)
Gain on sale of properties		0	9,025	5,697		47,382
Operating income		72,882	99,468	252,310		340,971
Other income/(expense)
Other (expense)/income, net		(900)	4,526	393		7,512
(Loss)/gain on marketable securities, net		(76,931)	(199)	444,646		1,375
Gain on sale of cost method investment		0	0	190,832		0
Interest expense		(46,942)	(43,146)	(141,017)		(131,638)
Early extinguishment of debt charges		(7,538)	0	(7,538)		0
(Loss)/income before income taxes, net, equity in income of joint ventures, net, and equity in income from other real estate investments, net		(59,429)	60,649	739,626		218,220
(Provision)/benefit for income taxes, net		(388)	3,866	(482)		3,580
Net (loss)/income		(37,429)	85,453	801,078		303,518
Net income attributable to noncontrolling interests		(965)	(1,463)	(1,479)		(2,332)
Net (loss)/income attributable to the Company		(38,394)	83,990	799,599		301,186
Preferred stock redemption charges		0	(11,369)	0		(11,369)
Preferred dividends		(6,354)	(13,573)	(19,062)		(42,641)
Net (loss)/income available to the Company's common shareholders		$ (44,748)	$ 59,048	$ 780,537		$ 247,176
Per common share:
-Basic (in dollars per share)		$ (0.10)	$ 0.14	$ 1.80		$ 0.58
-Diluted (in dollars per share)		$ (0.10)	$ 0.14	$ 1.80		$ 0.58
Weighted average shares:
-Basic (in shares)		429,994	419,823	429,899		419,663
-Diluted (in shares)	[2]	429,994	421,002	431,602		420,986
Joint Ventures [Member]
Other income/(expense)
Equity in income		$ 11,233	$ 17,673	$ 35,039		$ 58,960
Other Real Estate Investments [Member]
Other income/(expense)
Equity in income		$ 11,155	$ 3,265	$ 26,895		$ 22,758

[1] During the nine months ended September 30, 2020, the Company's revenue was reduced by $72.2 million associated with potentially uncollectible revenues, including revenues from tenants that are being accounted for on a cash basis, and disputed amounts, which includes $15.1 million for straight-line rent receivables, primarily attributable to the COVID-19 pandemic.

[2] The effect of the assumed conversion of certain convertible units had an anti-dilutive effect upon the calculation of Net income available to the Company’s common shareholders per share. Accordingly, the impact of such conversions has not been included in the determination of diluted earnings per share calculations. Additionally, there were 1.2 million and 0.5 million stock options that were not dilutive as of September 30, 2020 and 2019, respectively, and 2.5 million shares of restricted stock that were not dilutive for the three months ended September 30, 2020.