Segments - Schedule of Reconciliation of NOI to Net Income Attributable to Common Stockholders (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Segment Reporting [Abstract]
NOI	$ 122,823	$ 116,568
Fee income	5,999	3,465
Depreciation and amortization expense	(63,089)	(65,156)
General and administrative expenses	(17,443)	(12,631)
NOI from unconsolidated joint ventures	(5,411)	(4,740)
Interest and other income, net	3,900	2,016
Interest and debt expense	(36,924)	(36,082)
Other, net	(1,717)	(248)
Net income before income taxes	8,138	3,192
Income tax expense	(1,138)	(477)
Net income	7,000	2,715
Consolidated joint ventures	(2,794)	(1,055)
Consolidated real estate fund	(94)	(430)
Operating Partnership	(403)	(116)
Net income attributable to common stockholders	$ 3,709	$ 1,114