NOTE 3 - PROPERTY, PLANT AND EQUIPMENT, NET (Details) (in thousands) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
Leasehold improvements	$ 427	$ 416
Equipment	5,354	5,279
Sale demonstration equipment	1,434	1,315
Property and equipment gross	7,215	7,010
Less accumulated depreciation	4,796	4,552
Property and equipment, net	$ 2,419	$ 2,458