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NOTE 1 - FINANCIAL STATEMENT PREPARATION (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Revenues $ 4,655 $ 5,834 $ 9,440 $ 11,892
Change in revenue (20.20%)   (20.60%)  
Equipment Sales        
Revenues $ 2,476 3,537 $ 5,063 7,247
Change in revenue (30.00%)   (30.10%)  
Adapter Sales        
Revenues $ 1,324 1,421 $ 2,669 2,882
Change in revenue (6.80%)   (7.40%)  
Software and Maintenance        
Revenues $ 855 $ 876 $ 1,708 $ 1,763
Change in revenue (2.40%)   (3.10%)