Annual report pursuant to Section 13 and 15(d)

Summary of Net Deferred Tax Assets and Net Deferred Tax Liabilities (Detail)

v2.4.1.9
Summary of Net Deferred Tax Assets and Net Deferred Tax Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Income Tax Disclosure [Abstract]    
Capitalized intangible assets for tax purposes $ 202us-gaap_DeferredTaxAssetsGoodwillAndIntangibleAssets $ 283us-gaap_DeferredTaxAssetsGoodwillAndIntangibleAssets
Reserves not currently deductible 1,871us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves 1,702us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves
Deferred revenue 8us-gaap_DeferredTaxAssetsDeferredIncome 8us-gaap_DeferredTaxAssetsDeferredIncome
Stock options 2,911us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost 2,565us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
State taxes 8us-gaap_DeferredTaxAssetsStateTaxes 7us-gaap_DeferredTaxAssetsStateTaxes
Income tax credits 2,200us-gaap_DeferredTaxAssetsTaxCreditCarryforwards 1,583us-gaap_DeferredTaxAssetsTaxCreditCarryforwards
Inventory 1,225us-gaap_DeferredTaxAssetsInventory 871us-gaap_DeferredTaxAssetsInventory
Property and equipment 280us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment 376us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment
Other comprehensive income 222us-gaap_DeferredTaxAssetsOtherComprehensiveLoss 109us-gaap_DeferredTaxAssetsOtherComprehensiveLoss
Unrealized gain on foreign currency 136us-gaap_DeferredTaxAssetsUnrealizedCurrencyLosses 142us-gaap_DeferredTaxAssetsUnrealizedCurrencyLosses
Net operating losses 33,140us-gaap_DeferredTaxAssetsOperatingLossCarryforwards 28,058us-gaap_DeferredTaxAssetsOperatingLossCarryforwards
Total deferred tax assets 42,203us-gaap_DeferredTaxAssetsGross 35,704us-gaap_DeferredTaxAssetsGross
Valuation allowance (42,069)us-gaap_DeferredTaxAssetsValuationAllowance (35,566)us-gaap_DeferredTaxAssetsValuationAllowance
Net deferred tax assets 134us-gaap_DeferredTaxAssetsNet 138us-gaap_DeferredTaxAssetsNet
Capitalized intangible assets (752)us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill (696)us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill
Other (59)us-gaap_DeferredTaxLiabilitiesOther (59)us-gaap_DeferredTaxLiabilitiesOther
Total deferred tax liabilities (811)us-gaap_DeferredIncomeTaxLiabilities (755)us-gaap_DeferredIncomeTaxLiabilities
Net deferred tax liabilities $ (677)us-gaap_DeferredTaxLiabilities $ (617)us-gaap_DeferredTaxLiabilities