Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 1,632	$ (13,904)	$ 649	$ (27,204)
Foreign currency translation adjustments	5,269	(3,765)	7,824	869
Comprehensive income (loss)	$ 6,901	$ (17,669)	$ 8,473	$ (26,335)