Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement Of Income And Comprehensive Income [Abstract]
Net loss	$ (1,219)	$ (2,440)
Other Comprehensive income, net of tax
Unrealized loss on foreign currency contracts	(31)
Comprehensive loss	$ (1,250)	$ (2,440)