Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition (Details)

v3.19.3
Revenue Recognition (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Disaggregation of Revenue [Line Items]        
Revenue $ 7,569 $ 10,106 $ 16,571 $ 23,143
Product [Member]        
Disaggregation of Revenue [Line Items]        
Revenue 6,317 9,041 14,132 20,830
License and Service [Member]        
Disaggregation of Revenue [Line Items]        
Revenue 161 158 180 574
Service [Member]        
Disaggregation of Revenue [Line Items]        
Revenue $ 1,091 $ 907 $ 2,259 $ 1,739