Condensed Consolidated Statements Of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Net loss	$ (6,344)	$ (5,443)	$ (29,359)	$ (28,542)
Foreign currency translation adjustments	4,752	(861)	8,143	5,575
Comprehensive loss	$ (1,592)	$ (6,304)	$ (21,216)	$ (22,967)