CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2018	$ 214	$ 78,118	$ (42,569)	$ (1,635)	$ (2,999)	$ 31,129
Balance (in shares) at Dec. 31, 2018	21,485				(1,599)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense		570				570
Common stock issued for options exercised (in shares)	2
Common stock issued for options exercised	$ 1	41				42
Common stock issued for RSUs vested (in shares)	108
Common stock issued for RSUs vested	$ 1	(1)				0
Shares withheld to pay taxes		(150)				(150)
Foreign currency translation adjustment				(87)		(87)
Net loss			(4,297)			(4,297)
Balance at Mar. 31, 2019	$ 216	78,578	(46,866)	(1,722)	$ (2,999)	27,207
Balance (in shares) at Mar. 31, 2019	21,595				(1,599)
Balance at Dec. 31, 2019	$ 218	79,400	(54,654)	(1,846)	$ (2,999)	20,119
Balance (in shares) at Dec. 31, 2019	21,839				(1,599)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense		147				147
Common stock issued for RSUs vested (in shares)	140
Common stock issued for RSUs vested	$ 1	(1)				0
Shares withheld to pay taxes		(51)				(51)
Foreign currency translation adjustment				(186)		(186)
Net loss			(6,258)			(6,258)
Balance at Mar. 31, 2020	$ 219	$ 79,495	$ (60,912)	$ (2,032)	$ (2,999)	$ 13,771
Balance (in shares) at Mar. 31, 2020	21,979				(1,599)