Quarterly report pursuant to Section 13 or 15(d)

Product Warranties (Details)

v3.10.0.1
Product Warranties (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Changes in Company's standard product warranty reserve [Roll Forward]        
Total product warranty reserve at the beginning of the period $ 285 $ 446 $ 300 $ 395
Warranty expense to cost of revenue 12 42 44 160
Utilization (22) (39) (69) (106)
Total product warranty reserve at the end of the period $ 275 $ 449 $ 275 $ 449