Quarterly report pursuant to Section 13 or 15(d)

Accrued Liabilities (Details)

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Accrued Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Mar. 31, 2017
Payables and Accruals [Abstract]    
Accrued employee compensation and related expenses $ 12,269 $ 8,364
Employee-related Liabilities, Acquisition Related Expense, Current 1,517 0
Customer prepayment 706 168
Warranty reserve 346 300
Professional fees 2,456 1,631
Sales tax payable 1,352 1,573
Other 1,012 1,106
Total accrued current liabilities $ 19,658 $ 13,142