CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income Statement [Abstract]
Rental income	$ 174,777	$ 108,717
Expenses:
Real estate taxes	18,392	12,964
Utility expenses	9,381	6,690
Other operating expenses	30,136	22,837
Depreciation and amortization	77,521	44,204
Loss on impairment of real estate	3,204	6,116
Acquisition and transaction related costs	584	0
General and administrative	8,723	9,606
Total expenses	147,941	102,417
Gain on sale of real estate	22,092	0
Dividend income	980	304
Unrealized gain on equity securities	22,128	12,931
Interest income	248	116
Interest expense (including net amortization of debt premiums and discounts and debt issuance costs of $2,841 and $965, respectively)	(37,133)	(22,766)
Loss on early extinguishment of debt	(414)	0
Income before income tax expense and equity in earnings of an investee	34,737	(3,115)
Income tax expense	(483)	(32)
Equity in net losses of investees	(235)	(577)
Income (loss) from continuing operations	34,019	(3,724)
Income from discontinued operations	0	10,289
Net income	34,019	6,565
Other comprehensive loss:
Unrealized loss on financial instrument	(98)	0
Equity in unrealized gain (loss) of investees	66	(41)
Other comprehensive loss	(32)	(41)
Comprehensive income	33,987	6,524
Net income	34,019	6,565
Comprehensive income	0	(278)
Net income (loss) available for common shareholders	$ 34,019	$ 6,287
Weighted average common shares outstanding (basic) (in shares)	48,031	24,760
Weighted average common shares outstanding (diluted) (in shares)	48,046	24,760
Income from discontinued operations
Income (loss) from continuing operations (basic and diluted) (in dollars per share)	$ 0.71	$ (0.16)
Income from discontinued operations (in dollars per share)	0.00	0.42
Net income available for common shareholders (basic and diluted) (in dollars per share)	$ 0.71	$ 0.25