Condensed Consolidated Statements of Comprehensive Income Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 2,813	$ 79,662	$ 17,275	$ 113,862
Unrealized (loss) gain on interest rate hedges	(9)	739	(763)	(4,320)
Comprehensive income	2,804	80,401	16,512	109,542
Less: Comprehensive loss attributable to noncontrolling interests	20	12	56	32
Comprehensive income attributable to the controlling interests	$ 2,824	$ 80,413	$ 16,568	$ 109,574