Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue:
Rental income	$ 387,108	$ 336,359	$ 346,490
Expenses:
Property operating expense	55,301	49,509	50,918
Property tax expense	37,035	44,662	44,980
Property management fees to non-affiliates	3,528	0	0
Asset management fees to affiliates	0	23,668	23,499
Property management fees to affiliates	0	9,479	9,782
Self administration transaction expense	0	1,331	0
General and administrative expenses	26,078	6,968	7,322
Corporate operating expenses to affiliates	2,745	3,594	2,652
Impairment provision	30,734	0	8,460
Depreciation and amortization	153,425	119,168	116,583
Total expenses	308,846	258,379	264,196
Income before other income and (expenses)	78,262	77,980	82,294
Other income (expenses):
Interest expense	(73,557)	(55,194)	(51,015)
Management fee revenue from affiliates	6,368	0	0
Other income, net	1,340	275	537
Loss from investment in unconsolidated entities	(5,307)	(2,254)	(2,065)
Gain from disposition of assets	29,938	1,231	116,382
Net income	37,044	22,038	146,133
Distributions to redeemable preferred shareholders	(8,188)	(3,275)	0
Net income attributable to noncontrolling interests	(3,749)	(789)	(5,120)
Net income attributable to controlling interest	25,107	17,974	141,013
Distributions to redeemable noncontrolling interests attributable to common stockholders	(320)	(356)	(356)
Net income attributable to common stockholders	$ 24,787	$ 17,618	$ 140,657
Net income attributable to common stockholders per share, basic and diluted (in usd per share)	$ 0.11	$ 0.10	$ 0.80
Weighted average number of common shares outstanding, basic and diluted (shares)	222,116,812	169,492,659	175,611,890