CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Statement [Abstract]
Rental revenues and other property income	$ 459,184	$ 443,326	$ 1,358,728	$ 1,320,408
Expenses:
Property operating and maintenance	177,997	175,491	511,915	502,411
Property management expense	14,824	15,872	43,725	47,053
General and administrative	17,972	16,405	46,626	58,899
Interest expense	87,713	89,067	258,541	278,756
Depreciation and amortization	138,147	133,315	410,440	399,955
Impairment and other	1,723	4,740	4,670	11,803
Total expenses	438,376	434,890	1,275,917	1,298,877
Other, net	(3,049)	4,735	2,035	8,470
Gain on sale of property, net of tax	15,106	20,812	41,473	64,556
Net income	32,865	33,983	126,319	94,557
Net income attributable to non-controlling interests	(211)	(276)	(806)	(1,086)
Net income attributable to common stockholders	32,654	33,707	125,513	93,471
Net income available to participating securities	(114)	(91)	(335)	(306)
Net income available to common stockholders — basic and diluted (Note 12)	$ 32,540	$ 33,616	$ 125,178	$ 93,165
Weighted average common shares outstanding — basic	560,598,995	537,771,245	550,722,684	528,209,033
Weighted average common shares outstanding — diluted	561,871,373	538,644,888	551,947,278	529,160,353
Net income per common share — basic	$ 0.06	$ 0.06	$ 0.23	$ 0.18
Net income per common share — diluted	$ 0.06	$ 0.06	$ 0.23	$ 0.18