Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Net income (loss)	$ 2,301	$ 733	$ (3,266)	$ (2,125)
Foreign currency translation adjustments	(109)	64	(500)	(230)
Comprehensive income (loss)	$ 2,192	$ 797	$ (3,766)	$ (2,355)