NOTE 4 - PROPERTY, PLANT AND EQUIPMENT, NET (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Abstract]
Leasehold improvements	$ 416	$ 376
Equipment	5,279	4,449
Sales demonstration equipment	1,315	1,158
Property and equipment gross	7,010	5,983
Less accumulated depreciation	4,552	4,108
Property and equipment, net	$ 2,458	$ 1,875