Quarterly report pursuant to Section 13 or 15(d)

Product Warranties (Details)

v3.7.0.1
Product Warranties (Details) - USD ($)
$ in Thousands
3 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Changes in Company's standard product warranty reserve [Roll Forward]    
Total product warranty reserve at the beginning of the period $ 395 $ 436
Warranty expense to cost of revenue 13 34
Utilization (23) (31)
Total product warranty reserve at the end of the period $ 385 $ 439