Quarterly report pursuant to Section 13 or 15(d)

Product Warranties (Details)

v3.19.2
Product Warranties (Details) - USD ($)
$ in Thousands
3 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Changes in Company's standard product warranty reserve [Roll Forward]    
Total product warranty reserve at the beginning of the period $ 130 $ 300
Warranty expense to cost of revenue 12 20
Utilization (12) (30)
Total product warranty reserve at the end of the period $ 130 $ 290