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NOTE 3 - PROPERTY, PLANT AND EQUIPMENT, NET (Tables)
9 Months Ended
Sep. 30, 2020
Property, Plant and Equipment [Abstract]  
Property, plant, and equipment, net
   

September 30,

2020

   

December 31,

2019

 
 (in thousands)            
 Leasehold improvements   $ 403     $ 395  
 Equipment     5,832       5,606  
 Sales demonstration equipment     847       778  
      7,082       6,779  
 Less accumulated depreciation     5,566       5,111  
 Property and equipment, net   $ 1,516     $ 1,668