Annual report pursuant to Section 13 and 15(d)

Product Warranties (Details)

v3.20.1
Product Warranties (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Changes in Company's product warranty reserve    
Total product warranty reserve, beginning of period $ 130 $ 300
NetProductWarrantyExpense 111 (98)
Utilization (81) (72)
Total product warranty reserve, end of period $ 160 $ 130