Annual report pursuant to Section 13 and 15(d)

Supplemental Quarterly Data - Unaudited (In thousands, except per share data) (Details)

v2.4.1.9
Supplemental Quarterly Data - Unaudited (In thousands, except per share data) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Supplemental Income Statement Elements [Abstract]                      
Revenues $ 8,335us-gaap_Revenues $ 5,853us-gaap_Revenues $ 8,404us-gaap_Revenues $ 3,929us-gaap_Revenues $ 4,174us-gaap_Revenues $ 4,384us-gaap_Revenues $ 4,829us-gaap_Revenues $ 4,349us-gaap_Revenues $ 26,521us-gaap_Revenues $ 17,736us-gaap_Revenues $ 9,836us-gaap_Revenues
Cost of revenues 4,468us-gaap_CostOfRevenue 3,223us-gaap_CostOfRevenue 4,242us-gaap_CostOfRevenue 2,539us-gaap_CostOfRevenue 2,097us-gaap_CostOfRevenue 2,015us-gaap_CostOfRevenue 1,455us-gaap_CostOfRevenue 1,767us-gaap_CostOfRevenue 14,472us-gaap_CostOfRevenue 7,334us-gaap_CostOfRevenue 3,919us-gaap_CostOfRevenue
Gross profit 3,867us-gaap_GrossProfit 2,630us-gaap_GrossProfit 4,162us-gaap_GrossProfit 1,390us-gaap_GrossProfit 2,077us-gaap_GrossProfit 2,369us-gaap_GrossProfit 3,374us-gaap_GrossProfit 2,582us-gaap_GrossProfit 12,049us-gaap_GrossProfit 10,402us-gaap_GrossProfit 5,917us-gaap_GrossProfit
Research and development 2,897us-gaap_ResearchAndDevelopmentExpense 2,321us-gaap_ResearchAndDevelopmentExpense 2,264us-gaap_ResearchAndDevelopmentExpense 2,024us-gaap_ResearchAndDevelopmentExpense 2,116us-gaap_ResearchAndDevelopmentExpense 2,078us-gaap_ResearchAndDevelopmentExpense 2,241us-gaap_ResearchAndDevelopmentExpense 2,310us-gaap_ResearchAndDevelopmentExpense 9,506us-gaap_ResearchAndDevelopmentExpense 8,745us-gaap_ResearchAndDevelopmentExpense 7,701us-gaap_ResearchAndDevelopmentExpense
Selling, general and administrative 9,206us-gaap_SellingGeneralAndAdministrativeExpense 7,473us-gaap_SellingGeneralAndAdministrativeExpense 7,421us-gaap_SellingGeneralAndAdministrativeExpense 6,517us-gaap_SellingGeneralAndAdministrativeExpense 5,384us-gaap_SellingGeneralAndAdministrativeExpense 4,668us-gaap_SellingGeneralAndAdministrativeExpense 5,013us-gaap_SellingGeneralAndAdministrativeExpense 5,570us-gaap_SellingGeneralAndAdministrativeExpense 30,617us-gaap_SellingGeneralAndAdministrativeExpense 20,635us-gaap_SellingGeneralAndAdministrativeExpense 17,144us-gaap_SellingGeneralAndAdministrativeExpense
Amortization of purchased intangibles 182us-gaap_AmortizationOfIntangibleAssets 157us-gaap_AmortizationOfIntangibleAssets 156us-gaap_AmortizationOfIntangibleAssets 157us-gaap_AmortizationOfIntangibleAssets 156us-gaap_AmortizationOfIntangibleAssets 158us-gaap_AmortizationOfIntangibleAssets 156us-gaap_AmortizationOfIntangibleAssets 157us-gaap_AmortizationOfIntangibleAssets 652us-gaap_AmortizationOfIntangibleAssets 627us-gaap_AmortizationOfIntangibleAssets 952us-gaap_AmortizationOfIntangibleAssets
Total operating expenses 12,285us-gaap_OperatingExpenses 9,951us-gaap_OperatingExpenses 9,841us-gaap_OperatingExpenses 8,698us-gaap_OperatingExpenses 7,656us-gaap_OperatingExpenses 6,904us-gaap_OperatingExpenses 7,410us-gaap_OperatingExpenses 8,037us-gaap_OperatingExpenses 40,775us-gaap_OperatingExpenses 30,007us-gaap_OperatingExpenses 55,345us-gaap_OperatingExpenses
Operating loss (8,418)us-gaap_OperatingIncomeLoss (7,321)us-gaap_OperatingIncomeLoss (5,679)us-gaap_OperatingIncomeLoss (7,308)us-gaap_OperatingIncomeLoss (5,579)us-gaap_OperatingIncomeLoss (4,535)us-gaap_OperatingIncomeLoss (4,036)us-gaap_OperatingIncomeLoss (5,455)us-gaap_OperatingIncomeLoss (28,726)us-gaap_OperatingIncomeLoss (19,605)us-gaap_OperatingIncomeLoss (49,428)us-gaap_OperatingIncomeLoss
Interest, net 27us-gaap_InterestIncomeExpenseNet 11us-gaap_InterestIncomeExpenseNet 10us-gaap_InterestIncomeExpenseNet 12us-gaap_InterestIncomeExpenseNet 5us-gaap_InterestIncomeExpenseNet 7us-gaap_InterestIncomeExpenseNet 5us-gaap_InterestIncomeExpenseNet 11us-gaap_InterestIncomeExpenseNet 60us-gaap_InterestIncomeExpenseNet 28us-gaap_InterestIncomeExpenseNet 69us-gaap_InterestIncomeExpenseNet
Gain (loss) on currency exchange (145)us-gaap_ForeignCurrencyTransactionGainLossBeforeTax (33)us-gaap_ForeignCurrencyTransactionGainLossBeforeTax (6)us-gaap_ForeignCurrencyTransactionGainLossBeforeTax (17)us-gaap_ForeignCurrencyTransactionGainLossBeforeTax (16)us-gaap_ForeignCurrencyTransactionGainLossBeforeTax (21)us-gaap_ForeignCurrencyTransactionGainLossBeforeTax (11)us-gaap_ForeignCurrencyTransactionGainLossBeforeTax 8us-gaap_ForeignCurrencyTransactionGainLossBeforeTax (201)us-gaap_ForeignCurrencyTransactionGainLossBeforeTax (40)us-gaap_ForeignCurrencyTransactionGainLossBeforeTax 12us-gaap_ForeignCurrencyTransactionGainLossBeforeTax
Other, net (2)us-gaap_OtherNonoperatingIncomeExpense (28)us-gaap_OtherNonoperatingIncomeExpense 0us-gaap_OtherNonoperatingIncomeExpense (10)us-gaap_OtherNonoperatingIncomeExpense 0us-gaap_OtherNonoperatingIncomeExpense 2us-gaap_OtherNonoperatingIncomeExpense (2)us-gaap_OtherNonoperatingIncomeExpense 0us-gaap_OtherNonoperatingIncomeExpense (40)us-gaap_OtherNonoperatingIncomeExpense 0us-gaap_OtherNonoperatingIncomeExpense (8)us-gaap_OtherNonoperatingIncomeExpense
Total other income (expense), net (120)us-gaap_NonoperatingIncomeExpense (50)us-gaap_NonoperatingIncomeExpense 4us-gaap_NonoperatingIncomeExpense (15)us-gaap_NonoperatingIncomeExpense (11)us-gaap_NonoperatingIncomeExpense (12)us-gaap_NonoperatingIncomeExpense (8)us-gaap_NonoperatingIncomeExpense 19us-gaap_NonoperatingIncomeExpense (181)us-gaap_NonoperatingIncomeExpense (12)us-gaap_NonoperatingIncomeExpense 73us-gaap_NonoperatingIncomeExpense
Loss before income taxes (8,538)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest (7,371)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest (5,675)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest (7,323)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest (5,590)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest (4,547)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest (4,044)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest (5,436)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest (28,907)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest (19,617)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest (49,355)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Income tax expense (benefit) (626)us-gaap_IncomeTaxExpenseBenefit (4,492)us-gaap_IncomeTaxExpenseBenefit (296)us-gaap_IncomeTaxExpenseBenefit (1,150)us-gaap_IncomeTaxExpenseBenefit (1,003)us-gaap_IncomeTaxExpenseBenefit (1,085)us-gaap_IncomeTaxExpenseBenefit (797)us-gaap_IncomeTaxExpenseBenefit (511)us-gaap_IncomeTaxExpenseBenefit (6,564)us-gaap_IncomeTaxExpenseBenefit (3,396)us-gaap_IncomeTaxExpenseBenefit 4,435us-gaap_IncomeTaxExpenseBenefit
Net loss from continuing operations (7,912)us-gaap_IncomeLossFromContinuingOperations (2,879)us-gaap_IncomeLossFromContinuingOperations (5,379)us-gaap_IncomeLossFromContinuingOperations (6,173)us-gaap_IncomeLossFromContinuingOperations (4,587)us-gaap_IncomeLossFromContinuingOperations (3,462)us-gaap_IncomeLossFromContinuingOperations (3,247)us-gaap_IncomeLossFromContinuingOperations (4,925)us-gaap_IncomeLossFromContinuingOperations (22,343)us-gaap_IncomeLossFromContinuingOperations (16,221)us-gaap_IncomeLossFromContinuingOperations (53,790)us-gaap_IncomeLossFromContinuingOperations
Net income from discontinued operations, net of tax (542)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity 11,559us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity 562us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity 2,244us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity 1,838us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity 2,445us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity 1,296us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity 948us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity 13,823us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity 6,527us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity 5,452us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
Net loss $ (8,454)us-gaap_NetIncomeLoss $ 8,680us-gaap_NetIncomeLoss $ (4,817)us-gaap_NetIncomeLoss $ (3,929)us-gaap_NetIncomeLoss $ (2,749)us-gaap_NetIncomeLoss $ (1,017)us-gaap_NetIncomeLoss $ (1,951)us-gaap_NetIncomeLoss $ (3,977)us-gaap_NetIncomeLoss $ (8,520)us-gaap_NetIncomeLoss $ (9,694)us-gaap_NetIncomeLoss $ (48,338)us-gaap_NetIncomeLoss
Net income (loss) per basic and diluted share $ (0.93)us-gaap_EarningsPerShareBasicAndDiluted $ 0.99us-gaap_EarningsPerShareBasicAndDiluted $ (0.55)us-gaap_EarningsPerShareBasicAndDiluted $ (0.45)us-gaap_EarningsPerShareBasicAndDiluted $ (0.32)us-gaap_EarningsPerShareBasicAndDiluted $ (0.12)us-gaap_EarningsPerShareBasicAndDiluted $ (0.22)us-gaap_EarningsPerShareBasicAndDiluted $ (0.46)us-gaap_EarningsPerShareBasicAndDiluted $ (0.96)us-gaap_EarningsPerShareBasicAndDiluted $ (1.12)us-gaap_EarningsPerShareBasicAndDiluted $ (4.85)us-gaap_EarningsPerShareBasicAndDiluted