CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues:
Total revenues	$ 262,003	$ 277,202	$ 528,289	$ 552,972
Expenses:
Property operating expenses	120,193	110,056	237,415	218,154
Depreciation and amortization	73,924	72,300	146,154	142,639
General and administrative	8,867	29,078	18,683	54,196
Acquisition and certain other transaction related costs	903	67	8,717	87
Impairment of assets	2,213	548	8,419	548
Total expenses	206,100	212,049	419,388	415,624
Gain on sale of properties	17,832	80,762	17,710	261,916
Dividend income	923	659	1,846	1,318
Unrealized gains and losses on equity securities, net	(64,448)	23,265	(41,516)	50,506
Interest and other income	238	60	352	114
Interest expense (including net amortization of debt premiums, discounts and issuance costs of $1,519, $1,542, $3,171 and $2,953, respectively)	(46,412)	(44,813)	(92,023)	(88,365)
Loss on early extinguishment of debt	(17)	0	(17)	(130)
(Loss) income from continuing operations before income tax benefit (expense) and equity in earnings of an investee	(35,981)	125,086	(4,747)	362,707
Income tax benefit (expense)	35	(105)	(99)	(365)
Equity in earnings of an investee	130	7	534	51
Net (loss) income	(35,816)	124,988	(4,312)	362,393
Net income attributable to noncontrolling interest	(1,413)	(1,401)	(2,835)	(2,784)
Net income (loss) attributable to common shareholders	(37,229)	123,587	(7,147)	359,609
Other comprehensive income (loss):
Equity in unrealized gain (loss) of an investee	71	10	137	(83)
Other comprehensive income (loss)	71	10	137	(83)
Comprehensive (loss) income	(35,745)	124,998	(4,175)	362,310
Comprehensive income attributable to noncontrolling interest	(1,413)	(1,401)	(2,835)	(2,784)
Comprehensive (loss) income attributable to common shareholders	$ (37,158)	$ 123,597	$ (7,010)	$ 359,526
Weighted average common shares outstanding (basic) (in shares)	237,580	237,487	237,574	237,483
Weighted average common shares outstanding (diluted) (in shares)	237,580	237,529	237,574	237,506
Per common share amounts (basic and diluted):
Net (loss) income attributable to common shareholders (in dollars per share)	$ (0.16)	$ 0.52	$ (0.03)	$ 1.51
Rental income
Revenues:
Total revenues	$ 153,097	$ 174,585	$ 311,338	$ 348,313
Residents fees and services
Revenues:
Total revenues	$ 108,906	$ 102,617	$ 216,951	$ 204,659