Convertible Securities (Details) (USD $)
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1 Months Ended |
12 Months Ended |
1 Months Ended |
12 Months Ended |
1 Months Ended |
Sep. 30, 2013
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Apr. 30, 2013
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Feb. 28, 2013
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Jun. 30, 2013
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Dec. 31, 2014
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Dec. 31, 2013
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Jun. 30, 2010
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Dec. 31, 2012
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Nov. 30, 2014
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Nov. 30, 2012
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Dec. 31, 2013
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Debt Instrument [Line Items] |
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Stock issued during period |
10,563,381us-gaap_StockIssuedDuringPeriodSharesNewIssues
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2,100,000us-gaap_StockIssuedDuringPeriodSharesNewIssues
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1,542,389us-gaap_StockIssuedDuringPeriodSharesNewIssues
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Platinum Montaur Life Sciences Llc Credit Facility [Member] | Series X Warrants And Series AA Warrants [Member] |
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Debt Instrument [Line Items] |
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Number of common shares underlying Series B Preferred Stock |
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7,733,223navb_NumberofcommonsharesunderlyingSeriesBPreferredStock / us-gaap_ClassOfWarrantOrRightAxis = navb_SeriesXWarrantsAndSeriesAaWarrantsMember / us-gaap_DebtInstrumentAxis = navb_PlatinumMontaurLifeSciencesLlcCreditFacilityMember
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7,733,223navb_NumberofcommonsharesunderlyingSeriesBPreferredStock / us-gaap_ClassOfWarrantOrRightAxis = navb_SeriesXWarrantsAndSeriesAaWarrantsMember / us-gaap_DebtInstrumentAxis = navb_PlatinumMontaurLifeSciencesLlcCreditFacilityMember
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Series B Preferred Stock [Member] |
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Debt Instrument [Line Items] |
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Conversion of Series B preferred stock to common stock, shares |
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2,364.9us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember
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2,364.9us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember
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Consecutive trading days |
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180 days
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Preferred stock shares outstanding |
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4,519us-gaap_PreferredStockSharesOutstanding / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember
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7,565us-gaap_PreferredStockSharesOutstanding / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember
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7,565us-gaap_PreferredStockSharesOutstanding / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember
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Series B Preferred Stock [Member] | Maximum [Member] |
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Debt Instrument [Line Items] |
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Share price |
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7.00us-gaap_SharePrice / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember
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Series B Preferred Stock [Member] | Minimum [Member] |
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Debt Instrument [Line Items] |
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Share price |
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5.00us-gaap_SharePrice / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember
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Series B Preferred Stock [Member] | Platinum [Member] |
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Debt Instrument [Line Items] |
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Shares converted |
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4,422us-gaap_ConversionOfStockSharesConverted1 / dei_LegalEntityAxis = navb_PlatinumMontaurLifeSciencesLlcMember / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember
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1,737.9us-gaap_ConversionOfStockSharesConverted1 / dei_LegalEntityAxis = navb_PlatinumMontaurLifeSciencesLlcMember / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember
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10,000us-gaap_ConversionOfStockSharesConverted1 / dei_LegalEntityAxis = navb_PlatinumMontaurLifeSciencesLlcMember / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember
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3,063us-gaap_ConversionOfStockSharesConverted1 / dei_LegalEntityAxis = navb_PlatinumMontaurLifeSciencesLlcMember / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember
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Convertible preferred stock, shares issuable upon conversion |
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32,700,000us-gaap_ConvertiblePreferredStockSharesIssuedUponConversion / dei_LegalEntityAxis = navb_PlatinumMontaurLifeSciencesLlcMember / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember
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Aggregate shares issued upon conversion |
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1,300,000navb_ConvertiblePreferredStockAggregateSharesIssuedasfees / dei_LegalEntityAxis = navb_PlatinumMontaurLifeSciencesLlcMember / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember
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Minimum gross cash proceeds from public offering of common stock for automatic conversion |
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10,000,000navb_MinimumGrossCashProceedsFromPublicOfferingOfCommonStockForAutomaticConversion / dei_LegalEntityAxis = navb_PlatinumMontaurLifeSciencesLlcMember / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember
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Series B Preferred Stock [Member] | Platinum Partners Value Arbitrage Fund [Member] |
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Debt Instrument [Line Items] |
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Stock issued during period |
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1,376us-gaap_StockIssuedDuringPeriodSharesNewIssues / dei_LegalEntityAxis = navb_PlatinumPartnersValueArbitrageFundLpMember / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember
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918us-gaap_StockIssuedDuringPeriodSharesNewIssues / dei_LegalEntityAxis = navb_PlatinumPartnersValueArbitrageFundLpMember / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember
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Series C Preferred Stock [Member] | Bupp Investors [Member] |
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Debt Instrument [Line Items] |
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Shares converted |
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1,000us-gaap_ConversionOfStockSharesConverted1 / dei_LegalEntityAxis = navb_BuppInvestorsMember / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesCPreferredStockMember
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Convertible preferred stock, shares issuable upon conversion |
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3,226,000us-gaap_ConvertiblePreferredStockSharesIssuedUponConversion / dei_LegalEntityAxis = navb_BuppInvestorsMember / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesCPreferredStockMember
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Common Stock [Member] |
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Debt Instrument [Line Items] |
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Number of common shares underlying Series B Preferred Stock |
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14,777,130navb_NumberofcommonsharesunderlyingSeriesBPreferredStock / us-gaap_StatementClassOfStockAxis = us-gaap_CommonStockMember
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Shares conversion, number of common stock equivalent to each preferred stock |
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3,270navb_SharesConversionNumberOfCommonStockEquivalentToEachPreferredStock / us-gaap_StatementClassOfStockAxis = us-gaap_CommonStockMember
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3,270navb_SharesConversionNumberOfCommonStockEquivalentToEachPreferredStock / us-gaap_StatementClassOfStockAxis = us-gaap_CommonStockMember
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Common Stock [Member] | Platinum [Member] |
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Debt Instrument [Line Items] |
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Conversion of stock, shares issued |
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14,459,940us-gaap_ConversionOfStockSharesIssued1 / dei_LegalEntityAxis = navb_PlatinumMontaurLifeSciencesLlcMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonStockMember
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5,682,933us-gaap_ConversionOfStockSharesIssued1 / dei_LegalEntityAxis = navb_PlatinumMontaurLifeSciencesLlcMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonStockMember
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10,016,010us-gaap_ConversionOfStockSharesIssued1 / dei_LegalEntityAxis = navb_PlatinumMontaurLifeSciencesLlcMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonStockMember
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Common Stock [Member] | Bupp Investors [Member] |
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Debt Instrument [Line Items] |
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Convertible preferred stock |
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3,226,000navb_SharesIssuableUponConversion / dei_LegalEntityAxis = navb_BuppInvestorsMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonStockMember
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Common Stock [Member] | Platinum Partners Value Arbitrage Fund [Member] |
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Debt Instrument [Line Items] |
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Shares exchanged |
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4,499,520us-gaap_StockRepurchasedDuringPeriodShares / dei_LegalEntityAxis = navb_PlatinumPartnersValueArbitrageFundLpMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonStockMember
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3,001,860us-gaap_StockRepurchasedDuringPeriodShares / dei_LegalEntityAxis = navb_PlatinumPartnersValueArbitrageFundLpMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonStockMember
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