Quarterly report pursuant to Section 13 or 15(d)

Accrued Liabilities (Details)

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Accrued Liabilities (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Mar. 31, 2014
Payables and Accruals [Abstract]    
Accrued employee compensation and related expenses $ 9,853us-gaap_EmployeeRelatedLiabilitiesCurrent $ 5,043us-gaap_EmployeeRelatedLiabilitiesCurrent
Customer prepayment 769us-gaap_CustomerAdvancesCurrent 1,235us-gaap_CustomerAdvancesCurrent
Warranty reserve 359us-gaap_ProductWarrantyAccrualClassifiedCurrent 645us-gaap_ProductWarrantyAccrualClassifiedCurrent
Professional fees 2,024us-gaap_AccruedProfessionalFeesCurrent 1,250us-gaap_AccruedProfessionalFeesCurrent
Sales tax payable 957us-gaap_SalesAndExciseTaxPayableCurrent 707us-gaap_SalesAndExciseTaxPayableCurrent
Other 354us-gaap_OtherAccruedLiabilitiesCurrent 989us-gaap_OtherAccruedLiabilitiesCurrent
Total accrued current liabilities $ 14,316us-gaap_AccruedLiabilitiesCurrent $ 9,869us-gaap_AccruedLiabilitiesCurrent