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The following table presents our revenues disaggregated by revenue discipline: (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Disaggregation of Revenue [Line Items]        
Total revenue $ 5,685 $ 4,051 $ 14,813 $ 14,138
Product [Member]        
Disaggregation of Revenue [Line Items]        
Total revenue 3,690 1,918 9,359 8,261
Service [Member]        
Disaggregation of Revenue [Line Items]        
Total revenue $ 1,995 $ 2,133 $ 5,454 $ 5,877