Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Statement of Comprehensive Income [Abstract]
Net loss	$ (17,816)	$ (30,626)	$ (9,691)	$ (50,655)
Other comprehensive income
Foreign currency translation adjustments	6,167	10,123	147	13,179
Derivative adjustments
Fair valuation of derivatives	(24)	(1,417)	41	(1,417)
Reclassification adjustment for gain on derivatives included in net loss				(485)
Total other comprehensive income (loss)	6,143	8,706	188	11,277
Total comprehensive loss	$ (11,673)	$ (21,920)	$ (9,503)	$ (39,378)