CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net (loss) income	$ (7,684)	$ 5,174	$ (2,458)	$ 12,174
Other comprehensive loss:
Change in value of interest rate swaps		(15,345)		(24,371)
Pro rata share of other comprehensive loss of unconsolidated joint ventures	(1,696)	(76)	(16,357)	(184)
Comprehensive loss	(9,380)	(10,247)	(18,815)	(12,381)
Less comprehensive (income) loss attributable to noncontrolling interests in:
Consolidated joint ventures	(405)	(2,408)	(1,919)	(5,202)
Consolidated real estate fund	1,233	(48)	1,208	(99)
Operating Partnership	729	1,209	1,744	1,697
Comprehensive loss attributable to common stockholders	$ (7,823)	$ (11,494)	$ (17,782)	$ (15,985)