Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Net income	$ 1,866	$ 1,372	$ 3,817	$ 1,024
Other comprehensive income:
Foreign currency translation adjustments	(11)		4	(14)
Unrealized gain on available-for-sale marketable securities	(11)	6	(23)	27
Total comprehensive income	$ 1,844	$ 1,378	$ 3,798	$ 1,037