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v2.4.1.9

Income Taxes (Details Textual) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Income Tax (Textual) |  |  |
Interest or penalties related to unrecognized tax benefits | $ 0 us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense | $ 0 us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense | $ 0 us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense
Accrued interest and penalties related to uncertain tax | 0 neond_AccruedInterestAndPenaltiesRelatedToUncertainTax | 0 neond_AccruedInterestAndPenaltiesRelatedToUncertainTax |
Uncertain tax positions | 0 us-gaap_LiabilityForUncertainTaxPositionsCurrent |  |
Description of income tax withholding | Payments related to the license agreement with Sony Corporation are net of 10% income tax withholding as required by the Japanese government under the Sweden and Japan international tax treaty. |  |
Amount withheld to offset future tax income tax payable | 0 neond_AmountWithheldToOffsetFutureTaxLiability | 42,000 neond_AmountWithheldToOffsetFutureTaxLiability | 123,000 neond_AmountWithheldToOffsetFutureTaxLiability
Open tax years | 1998 through 2013 |  |
Federal [Member] |  |  |
Income Tax (Textual) |  |  |
Operating loss carryforwards | 41,700,000 us-gaap_OperatingLossCarryforwards / us-gaap_IncomeTaxAuthorityAxis = us-gaap_DomesticCountryMember |  |
Operating loss carryforwards, expiration date | Dec. 31, 2028 |  |
Deferred tax assets related to excess tax benefits for stock based compensation | 533,000 us-gaap_IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost / us-gaap_IncomeTaxAuthorityAxis = us-gaap_DomesticCountryMember |  |
State [Member] |  |  |
Income Tax (Textual) |  |  |
Operating loss carryforwards | 16,100,000 us-gaap_OperatingLossCarryforwards / us-gaap_IncomeTaxAuthorityAxis = us-gaap_StateAndLocalJurisdictionMember |  |
Operating loss carryforwards, expiration date | Dec. 31, 2020 |  |
Deferred tax assets related to excess tax benefits for stock based compensation | 27,000 us-gaap_IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost / us-gaap_IncomeTaxAuthorityAxis = us-gaap_StateAndLocalJurisdictionMember |  |
Foreign [Member] |  |  |
Income Tax (Textual) |  |  |
Operating loss carryforwards | $ 0 us-gaap_OperatingLossCarryforwards / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember |  |

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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible equity-based compensation costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 + Details
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