CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net loss	$ (573)	$ (1,923)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	(222)	259
Unrealized gains (losses) on available-for-sale securities	(87)	17
Comprehensive loss	$ (882)	$ (1,647)