Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 7,131	$ 4,005	$ 26,098	$ 3,451
Other comprehensive income (loss):
Equity in other comprehensive income (loss) of unconsolidated joint venture	327	(539)	(456)	(670)
Change in fair value of swap agreement	6,494	(14,664)	(17,606)	(14,664)
Total comprehensive loss	13,952	(11,198)	8,036	(11,883)
Distributions to redeemable preferred unit holders	0	(1,198)	0	(8,789)
Preferred units redemption premium	0	(1,131)	0	(8,560)
Distributions to redeemable noncontrolling interests attributable to common stockholders	(90)	(91)	(268)	(268)
Less: comprehensive loss (income) attributable to noncontrolling interests	(480)	336	(274)	850
Comprehensive loss attributable to common stockholders	$ 13,382	$ (13,282)	$ 7,494	$ (28,650)