Quarterly report pursuant to Section 13 or 15(d)

Components of Accrued Liabilities (Detail)

v2.4.1.9
Components of Accrued Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Mar. 31, 2014
Components of accrued liabilities      
Payroll and benefits $ 2,177us-gaap_EmployeeRelatedLiabilitiesCurrent $ 1,905us-gaap_EmployeeRelatedLiabilitiesCurrent  
Warranty accrual, current portion 1,027us-gaap_ProductWarrantyAccrualClassifiedCurrent 930us-gaap_ProductWarrantyAccrualClassifiedCurrent 1,025us-gaap_ProductWarrantyAccrualClassifiedCurrent
Taxes 38us-gaap_TaxesPayableCurrent 139us-gaap_TaxesPayableCurrent  
Accrued professional services 1,566us-gaap_AccruedProfessionalFeesCurrent 1,581us-gaap_AccruedProfessionalFeesCurrent  
Accrued capital lease payments 143us-gaap_CapitalLeaseObligationsCurrent    
Accrued insurance premium 104us-gaap_AccruedInsuranceCurrent 450us-gaap_AccruedInsuranceCurrent  
Other 89us-gaap_OtherAccruedLiabilitiesCurrent 183us-gaap_OtherAccruedLiabilitiesCurrent  
Total accrued liabilities $ 5,144us-gaap_AccruedLiabilitiesCurrent $ 5,188us-gaap_AccruedLiabilitiesCurrent