CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenues:
Total revenues	$ 266,286	$ 275,770
Expenses:
Property operating expenses	117,222	108,098
Depreciation and amortization	72,230	70,339
General and administrative	9,816	25,118
Acquisition and certain other transaction related costs	7,814	20
Impairment of assets	6,206	0
Total expenses	213,288	203,575
(Loss) gain on sale of properties	(122)	181,154
Dividend income	923	659
Unrealized gains and losses on equity securities, net	22,932	27,241
Interest and other income	114	54
Interest expense (including net amortization of debt premiums, discounts and issuance costs of $1,652 and $1,411, respectively)	(45,611)	(43,552)
Loss on early extinguishment of debt	0	(130)
Income from continuing operations before income tax expense and equity in earnings of an investee	31,234	237,621
Income tax expense	(134)	(260)
Equity in earnings of an investee	404	44
Net income (loss)	31,504	237,405
Net income attributable to noncontrolling interest	(1,422)	(1,383)
Net income (loss) attributable to common shareholders	30,082	236,022
Other comprehensive income:
Equity in unrealized gain (loss) of an investee	66	(93)
Other comprehensive income (loss)	66	(93)
Comprehensive income	31,570	237,312
Comprehensive income attributable to noncontrolling interest	(1,422)	(1,383)
Comprehensive income attributable to common shareholders	$ 30,148	$ 235,929
Weighted average common shares outstanding (basic) (in shares)	237,568	237,478
Weighted average common shares outstanding (diluted) (in shares)	237,600	237,493
Per common share amounts (basic and diluted):
Net income attributable to common shareholders (in dollars per share)	$ 0.13	$ 0.99
Rental income
Revenues:
Total revenues	$ 158,241	$ 173,728
Residents fees and services
Revenues:
Total revenues	$ 108,045	$ 102,042