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Summary of Significant Accounting Policies (Details Textual) | 12 Months Ended |
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Dec. 31, 2014 USD ($) Customer | Dec. 31, 2013 USD ($) Customer | Dec. 31, 2012 USD ($) Customer | Dec. 31, 2014 Sales Revenue, Net [Member] | Dec. 31, 2013 Sales Revenue, Net [Member] | Dec. 31, 2012 Sales Revenue, Net [Member] | Dec. 31, 2013 Customer Two [Member] Accounts Receivable [Member] | Dec. 31, 2014 Customer Three [Member] Accounts Receivable [Member] | Dec. 31, 2014 Hewlett Packard [Member] Sales Revenue, Net [Member] | Dec. 31, 2014 Kobo Inc [Member] Sales Revenue, Net [Member] | Dec. 31, 2013 Kobo Inc [Member] Sales Revenue, Net [Member] | Dec. 31, 2012 Kobo Inc [Member] Sales Revenue, Net [Member] | Dec. 31, 2014 Leap Frog Enterprises Inc [Member] Sales Revenue, Net [Member] | Dec. 31, 2013 Leap Frog Enterprises Inc [Member] Sales Revenue, Net [Member] | Dec. 31, 2013 Netronix Inc [Member] Sales Revenue, Net [Member] | Dec. 31, 2014 Sony Corporation [Member] Sales Revenue, Net [Member] | Dec. 31, 2013 Sony Corporation [Member] Sales Revenue, Net [Member] | Dec. 31, 2012 Sony Corporation [Member] Sales Revenue, Net [Member] | Dec. 31, 2012 Amazon Inc [Member] Sales Revenue, Net [Member] | Dec. 31, 2014 UNITED STATES USD ($) | Dec. 31, 2013 UNITED STATES | Dec. 31, 2014 Sweden EUR (€) | Dec. 31, 2013 Sweden | Dec. 31, 2014 JAPAN JPY (¥) | Dec. 31, 2014 KOREA, REPUBLIC OF KRW
Summary of Significant Accounting Policies (Textual) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic deposit coverage limits per owner and customer |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 250,000 us-gaap_CashFDICInsuredAmount / us-gaap_StatementGeographicalAxis = country_US |  | € 100,000 us-gaap_CashFDICInsuredAmount / us-gaap_StatementGeographicalAxis = country_SE |  | ¥ 10,000,000 us-gaap_CashFDICInsuredAmount / us-gaap_StatementGeographicalAxis = country_JP | 50,000,000 us-gaap_CashFDICInsuredAmount / us-gaap_StatementGeographicalAxis = country_KR
Excess of insurance limits | 5,700,000 neond_ExcessOfInsuranceLimits |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts | 167,000 us-gaap_AllowanceForDoubtfulAccountsReceivable |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Environmental Costs Recognized, Capitalized in Period | 200,000 us-gaap_EnvironmentalCostsRecognizedCapitalizedInPeriod | 736,000 us-gaap_EnvironmentalCostsRecognizedCapitalizedInPeriod |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign currency translation gain (loss) | 138,000 us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax | 6,000 us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax | (8,000)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign currency translation included in general and administrative expense | (37,000)us-gaap_OtherSellingGeneralAndAdministrativeExpense | (155,000)us-gaap_OtherSellingGeneralAndAdministrativeExpense | (50,000)us-gaap_OtherSellingGeneralAndAdministrativeExpense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Concentration risk, Percentage |  |  |  | 10.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueNetMember | 10.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueNetMember | 10.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueNetMember | 56.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember / us-gaap_MajorCustomersAxis = neond_CustomerTwoMember | 87.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember / us-gaap_MajorCustomersAxis = neond_CustomersThreeMember | 24.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueNetMember / us-gaap_MajorCustomersAxis = neond_HewlettPackardMember | 10.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueNetMember / us-gaap_MajorCustomersAxis = neond_KoboIncMember | 28.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueNetMember / us-gaap_MajorCustomersAxis = neond_KoboIncMember | 26.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueNetMember / us-gaap_MajorCustomersAxis = neond_KoboIncMember | 11.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueNetMember / us-gaap_MajorCustomersAxis = neond_LeapFrogEnterprisesIncMember | 12.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueNetMember / us-gaap_MajorCustomersAxis = neond_LeapFrogEnterprisesIncMember | 18.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueNetMember / us-gaap_MajorCustomersAxis = neond_NetronixIncMember | 10.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueNetMember / us-gaap_MajorCustomersAxis = neond_SonyCorporationMember | 11.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueNetMember / us-gaap_MajorCustomersAxis = neond_SonyCorporationMember | 17.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueNetMember / us-gaap_MajorCustomersAxis = neond_SonyCorporationMember | 32.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueNetMember / us-gaap_MajorCustomersAxis = neond_AmazonIncMember | 85.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_StatementGeographicalAxis = country_US | 90.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_StatementGeographicalAxis = country_US | 14.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_StatementGeographicalAxis = country_SE | 10.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_StatementGeographicalAxis = country_SE |  |
Advertising costs | $ 172,000 us-gaap_AdvertisingExpense | $ 141,000 us-gaap_AdvertisingExpense | $ 312,000 us-gaap_AdvertisingExpense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average exchange rate for consolidated statements of operations (Japanese Yen to one U.S. Dollar) | 105.84 neond_WeightedAverageExchangeRateForStatementsOfOperationsAndComprehensiveLossOne | 97.58 neond_WeightedAverageExchangeRateForStatementsOfOperationsAndComprehensiveLossOne |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exchange rate for the consolidated balance sheets (Japanese Yen to one U.S. Dollar) | 119.93 neond_ForeignCurrencyExchangeRateTranslationOne | 105.22 neond_ForeignCurrencyExchangeRateTranslationOne |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average exchange rate for consolidated statements of operations (South Korean won to one U.S. Dollar) | 1050.63%neond_WeightedAverageExchangeRateForTheConsolidatedStatementOfOperationsAndOfComprehensiveLossTwo |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exchange rate for the consolidated balance sheets (South Korean Won to one U.S. Dollar ) | 1096.73%neond_ForeignCurrencyExchangeRateTranslationTwo |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average exchange rate (Swedish Krona to one U.S. Dollar) | 6.86 neond_WeightedAverageExchangeRateForStatementsOfOperationsAndComprehensiveLoss | 6.51 neond_WeightedAverageExchangeRateForStatementsOfOperationsAndComprehensiveLoss | 6.78 neond_WeightedAverageExchangeRateForStatementsOfOperationsAndComprehensiveLoss |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exchange rate for the consolidated balance sheets (Swedish Krona to one U.S. Dollar) | 7.80 us-gaap_ForeignCurrencyExchangeRateTranslation1 | 6.48 us-gaap_ForeignCurrencyExchangeRateTranslation1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of customers | 32 neond_NumberOfCustomers | 29 neond_NumberOfCustomers | 20 neond_NumberOfCustomers |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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