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NOTE 3 - PROPERTY, PLANT AND EQUIPMENT, NET (Details) (in thousands) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Property, Plant and Equipment [Abstract]    
Leasehold improvements $ 390 $ 395
Equipment 5,666 5,606
Sale demonstration equipment 905 778
Property and equipment gross 6,961 6,779
Less accumulated depreciation 5,359 5,111
Property and equipment, net $ 1,602 $ 1,668