Quarterly report pursuant to Section 13 or 15(d)

Product Warranties (Details)

v3.8.0.1
Product Warranties (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Changes in Company's standard product warranty reserve [Roll Forward]        
Total product warranty reserve at the beginning of the period $ 446 $ 460 $ 395 $ 436
Warranty expense to cost of revenue 42 12 160 80
Utilization (39) (2) (106) (46)
Total product warranty reserve at the end of the period $ 449 $ 470 $ 449 $ 470