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Income Taxes (Details 3) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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Deferred tax assets: |  |
Accruals | $ 1,053 us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals | $ 1,519 us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals
Stock compensation | 1,210 us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost | 1,070 us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
Net operating losses | 14,681 us-gaap_DeferredTaxAssetsOperatingLossCarryforwards | 9,760 us-gaap_DeferredTaxAssetsOperatingLossCarryforwards
Total deferred tax assets | 16,944 us-gaap_DeferredTaxAssetsGross | 12,349 us-gaap_DeferredTaxAssetsGross
Basis difference in fixed assets | 2 neond_DeferredTaxAssetsBasisDifferenceInFixedAssets | (14)neond_DeferredTaxAssetsBasisDifferenceInFixedAssets
Valuation allowance | (16,946)us-gaap_DeferredTaxAssetsValuationAllowance | (12,335)us-gaap_DeferredTaxAssetsValuationAllowance
Total net deferred tax assets |  |

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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32621-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32632-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 20 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=29652012&loc=d3e28680-109314 + Details
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