CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement Of Income And Comprehensive Income [Abstract]
Net income		$ 18,993	$ 107,176	$ 2,069
Other comprehensive income (loss):
Change in value of interest rate swaps		7,273	10,618	8,161
Pro rata share of other comprehensive (loss) income of unconsolidated joint ventures	[1]	(129)	160	17
Comprehensive income		26,137	117,954	10,247
Less comprehensive (income) loss attributable to noncontrolling interests in:
Consolidated joint ventures		(8,182)	10,365	(15,423)
Consolidated real estate fund		(665)	(19,797)	1,316
Operating Partnership		(1,605)	(12,430)	2,141
Comprehensive income (loss) attributable to common stockholders		$ 15,685	$ 96,092	$ (1,719)

[1] Represents foreign currency translation adjustments. No amounts were reclassified from accumulated other comprehensive income (loss) during any of the periods set forth above.