Quarterly report pursuant to Section 13 or 15(d)

Product Warranties (Details)

v3.20.4
Product Warranties (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Changes in Company's standard product warranty reserve [Roll Forward]        
Total product warranty reserve at the beginning of the period $ 130 $ 130 $ 160 $ 130
Warranty expense to cost of revenue 11 17 90 51
Utilization (11) (17) (120) (51)
Total product warranty reserve at the end of the period $ 130 $ 130 $ 130 $ 130