CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (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)	$ 9,016	$ 5,488	$ 31,506	$ (14,464)
Other comprehensive income (loss)
Cumulative translation adjustment	(188)	(1,528)	(274)	2,641
Designated derivatives, fair value adjustments	762	(3,785)	(11,452)	(1,539)
Other comprehensive income (loss)	574	(5,313)	(11,726)	1,102
Comprehensive income (loss)	9,590	175	19,780	(13,362)
Amounts attributable to non-controlling interest
Net (income) loss	(73)	(56)	(312)	87
Cumulative translation adjustment	4	177	5	286
Designated derivatives, fair value adjustments	(18)	(81)	111	(76)
Comprehensive (income) loss attributable to non-controlling interest	(87)	40	(196)	297
Comprehensive income (loss) attributable to stockholders	$ 9,503	$ 215	$ 19,584	$ (13,065)