Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Net loss	$ (1,199)	$ (875)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	83	184
Unrealized holding gain (loss) on available-for-sale securities	(1)	12
Total other comprehensive income (loss)	82	196
Comprehensive loss	$ (1,117)	$ (679)