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
Jun. 30, 2018
Jun. 30, 2017
Changes in Company's standard product warranty reserve [Roll Forward]    
Total product warranty reserve at the beginning of the period $ 300 $ 395
Warranty expense to cost of revenue 20 13
Utilization (30) (23)
Total product warranty reserve at the end of the period $ 290 $ 385