Condensed Consolidated Statements Of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net loss	$ (4,530)	$ (3,562)
Other comprehensive income:
Net change in foreign currency translation adjustments	623	137
Total other comprehensive income	623	137
Total comprehensive loss	$ (3,907)	$ (3,425)