Quarterly report pursuant to Section 13 or 15(d)

Accrued Liabilities (Details)

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Accrued Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Mar. 31, 2018
Payables and Accruals [Abstract]    
Accrued employee compensation and related expenses $ 14,625 $ 16,449
Accrued interest 1,081 1,154
Customer prepayment 597 519
Warranty reserve 300 300
Professional fees 2,083 1,854
Sales tax payable 3,025 1,546
Other 722 988
Total accrued current liabilities $ 22,433 $ 22,810