Equity Transactions - Additional Information (Detail) (USD $)
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1 Months Ended |
12 Months Ended |
0 Months Ended |
Aug. 31, 2014
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Mar. 31, 2013
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Dec. 31, 2014
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Dec. 31, 2013
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Apr. 15, 2014
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Oct. 27, 2014
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Compensation Related Costs Share Based Payments Disclosure [Line Items] |
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Sale of Common stock |
8,050,000us-gaap_StockIssuedDuringPeriodSharesNewIssues |
3,322,500us-gaap_StockIssuedDuringPeriodSharesNewIssues |
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Share price |
$ 4.60us-gaap_SharePrice |
$ 3.00us-gaap_SharePrice |
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Gross proceeds |
$ 37,000,000neo_ProceedsFromIssuanceOfCommonStockGross |
$ 10,000,000neo_ProceedsFromIssuanceOfCommonStockGross |
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Net proceeds from public offering |
34,300,000us-gaap_ProceedsFromIssuanceOfCommonStock |
9,200,000us-gaap_ProceedsFromIssuanceOfCommonStock |
34,254,000us-gaap_ProceedsFromIssuanceOfCommonStock |
9,018,000us-gaap_ProceedsFromIssuanceOfCommonStock |
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Underwriting fees and offering costs |
2,700,000us-gaap_PaymentsOfStockIssuanceCosts |
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Underwriting fees and offering costs |
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800,000us-gaap_PaymentsForUnderwritingExpense |
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Restricted Stock [Member] |
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Compensation Related Costs Share Based Payments Disclosure [Line Items] |
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Restricted stock granted |
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138,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember |
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125,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember |
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Fair market value restricted stock |
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381,250us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember |
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Restricted stock price per share |
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$ 3.07us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember |
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$ 3.05us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember |
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Stock compensation expense |
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91,000us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember |
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Restricted Stock [Member] | Independent Directors [Member] |
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Compensation Related Costs Share Based Payments Disclosure [Line Items] |
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Restricted stock granted |
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3,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_TitleOfIndividualAxis = neo_IndependentDirectorsMember |
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Fair market value restricted stock |
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9,150us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_TitleOfIndividualAxis = neo_IndependentDirectorsMember |
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Restricted stock price per share |
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$ 3.05us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_TitleOfIndividualAxis = neo_IndependentDirectorsMember |
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Stock compensation expense |
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36,000us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_TitleOfIndividualAxis = neo_IndependentDirectorsMember |
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Restricted stock outstanding |
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12,000us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_TitleOfIndividualAxis = neo_IndependentDirectorsMember |
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Number of Directors |
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4neo_NumberOfDirectorsEligibleUnderPlan / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_TitleOfIndividualAxis = neo_IndependentDirectorsMember |
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Restricted Stock [Member] | Director [Member] |
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Compensation Related Costs Share Based Payments Disclosure [Line Items] |
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Restricted stock granted |
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1,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_TitleOfIndividualAxis = us-gaap_DirectorMember |
Fair market value restricted stock |
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7,365us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_TitleOfIndividualAxis = us-gaap_DirectorMember |
Restricted stock price per share |
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$ 4.91us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_TitleOfIndividualAxis = us-gaap_DirectorMember |
Stock compensation expense |
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$ 2,000us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_TitleOfIndividualAxis = us-gaap_DirectorMember |
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