Annual report pursuant to Section 13 and 15(d)

Components of Accrued Liabilities (Detail)

v2.4.1.9
Components of Accrued Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Components of accrued liabilities      
Payroll and benefits $ 1,905us-gaap_EmployeeRelatedLiabilitiesCurrent $ 1,898us-gaap_EmployeeRelatedLiabilitiesCurrent  
Total warranty accrual, current portion 930us-gaap_ProductWarrantyAccrualClassifiedCurrent 1,096us-gaap_ProductWarrantyAccrualClassifiedCurrent 1,699us-gaap_ProductWarrantyAccrualClassifiedCurrent
Taxes 139us-gaap_TaxesPayableCurrent 338us-gaap_TaxesPayableCurrent  
Accrued professional services 1,581us-gaap_AccruedProfessionalFeesCurrent 911us-gaap_AccruedProfessionalFeesCurrent  
Accrued insurance premium 450us-gaap_AccruedInsuranceCurrent 428us-gaap_AccruedInsuranceCurrent  
Other 183us-gaap_OtherAccruedLiabilitiesCurrent 326us-gaap_OtherAccruedLiabilitiesCurrent  
Accrued liabilities $ 5,188us-gaap_AccruedLiabilitiesCurrent $ 4,997us-gaap_AccruedLiabilitiesCurrent