Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition (Details)

v3.20.4
Revenue Recognition (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Disaggregation of Revenue [Line Items]        
Revenue $ 7,649 $ 7,159 $ 23,319 $ 23,730
Product [Member]        
Disaggregation of Revenue [Line Items]        
Revenue 6,227 5,842 19,386 19,974
License and Service [Member]        
Disaggregation of Revenue [Line Items]        
Revenue 15 92 179 272
Service [Member]        
Disaggregation of Revenue [Line Items]        
Revenue $ 1,407 $ 1,225 $ 3,754 $ 3,484