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NOTE 3 - PROPERTY, PLANT AND EQUIPMENT, NET (Details) (in thousands) - USD ($)
$ in Thousands
Sep. 30, 2018
Dec. 31, 2017
Property, Plant and Equipment [Abstract]    
Leasehold improvements $ 399 $ 416
Equipment 5,565 5,279
Sale demonstration equipment 954 1,315
Property and equipment gross 6,918 7,010
Less accumulated depreciation 4,895 4,552
Property and equipment, net $ 2,023 $ 2,458