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
Income Statement [Abstract]
Rental income	$ 176,032	$ 108,085	$ 350,809	$ 216,802
Expenses:
Real estate taxes	18,147	12,365	36,539	25,330
Utility expenses	7,470	6,018	16,851	12,707
Other operating expenses	29,692	21,599	59,828	44,436
Depreciation and amortization	73,913	42,671	151,434	86,875
Loss on impairment of real estate	2,380	(316)	5,584	5,800
Acquisition and transaction related costs	98	0	682	0
General and administrative	8,744	4,449	17,467	14,055
Total expenses	140,444	86,786	288,385	189,203
Gain (loss) on sale of real estate	(17)	17,329	22,075	17,329
Dividend income	980	304	1,960	608
Unrealized gain (loss) on equity securities	(66,135)	10,321	(44,007)	23,252
Interest income	241	149	489	265
Interest expense (including net amortization of debt premiums and discounts and debt issuance costs of $2,863, $892, $5,704 and $1,856, respectively)	(35,348)	(23,304)	(72,481)	(46,070)
Loss on early extinguishment of debt	(71)	0	(485)	0
Income (loss) from continuing operations before income tax benefit (expense) and equity in net losses of investees	(64,762)	26,098	(30,025)	22,983
Income tax benefit (expense)	130	(83)	(353)	(115)
Equity in net losses of investees	(142)	(629)	(377)	(1,206)
Income (loss) from continuing operations	(64,774)	25,386	(30,755)	21,662
Income from discontinued operations	0	4,309	0	14,598
Net income (loss)	(64,774)	29,695	(30,755)	36,260
Other comprehensive income (loss):
Unrealized loss on financial instrument	(269)	0	(367)	0
Equity in unrealized gain (loss) of investees	71	34	137	(7)
Other comprehensive income (loss)	(198)	34	(230)	(7)
Comprehensive income (loss)	(64,972)	29,729	(30,985)	36,253
Net income (loss)	(64,774)	29,695	(30,755)	36,260
Preferred units of limited partnership distributions	0	(93)	0	(371)
Net income (loss) available for common shareholders	$ (64,774)	$ 29,602	$ (30,755)	$ 35,889
Weighted average common shares outstanding (basic) (in shares)	48,049	24,763	48,040	24,762
Weighted average common shares outstanding (diluted) (in shares)	48,049	24,766	48,040	24,763
Per common share amounts (basic and diluted):
Income (loss) from continuing operations (basic and diluted) (in dollars per share)	$ (1.35)	$ 1.02	$ (0.64)	$ 0.86
Income from discontinued operations (in dollars per share)	0	0.17	0	0.59
Net income (loss) available for common shareholders (basic and diluted) (in dollars per share)	$ (1.35)	$ 1.20	$ (0.64)	$ 1.45