CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Net loss	$ (12,029)	$ (25,137)
Other comprehensive loss:
Foreign currency translation adjustments	(1,870)	(544)
Comprehensive loss	$ (13,899)	$ (25,681)