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NOTE 1 - FINANCIAL STATEMENT PREPARATION (Tables)
9 Months Ended
Sep. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Disaggregation of revenue
    Three Months Ended     Nine Months Ended  
Net sales by type  

September 30,

2020

    Change    

September 30,

2019

   

September 30,

2020

    Change    

September 30,

2019

 
(in thousands)                                    
Equipment   $ 3,861       146.4%   $ 1,567     $ 8,924       1.2%   $ 8,815  
Adapter     1,246       (7.2%)     1,342       3,915       (7.3%)     4,223  
Software and Maintenance     840       (6.6%)     899       2,548       (4.3%)     2,662  
Total   $ 5,947       56.2%   $ 3,808     $ 15,387       (2.0%)   $ 15,700