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Investment in R-NAV (Details) (USD $)
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12 Months Ended | 0 Months Ended | 1 Months Ended | ||
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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Jul. 15, 2014
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Dec. 31, 2014
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| Schedule of Equity Method Investments [Line Items] | |||||
| Loss from equity method investment | $ 523,809us-gaap_IncomeLossFromEquityMethodInvestments | $ 0us-gaap_IncomeLossFromEquityMethodInvestments | $ 0us-gaap_IncomeLossFromEquityMethodInvestments | ||
| R-NAV [Member] | |||||
| Schedule of Equity Method Investments [Line Items] | |||||
| Initial capitalization of investment |
4,000,000navb_EquityMethodInvestmentInitialCapitalization / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = navb_RNAVMember |
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| Payments to acquire equity method investment |
333,334us-gaap_PaymentsToAcquireEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = navb_RNAVMember |
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| Promissory note payable |
666,666navb_EquityMethodInvestmentPromissoryNotePayable / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = navb_RNAVMember |
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| Conversion price |
$ 1us-gaap_PreferredStockRedemptionPricePerShare / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = navb_RNAVMember |
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| Ownership percentage |
32.50%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = navb_RNAVMember |
33.70%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = navb_RNAVMember |
32.50%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = navb_RNAVMember |
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| Additional capitalization |
570,000navb_EquityMethodInvestmentAdditionalCapitalization / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = navb_RNAVMember |
570,000navb_EquityMethodInvestmentAdditionalCapitalization / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = navb_RNAVMember |
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| Aggregate cost |
1,000,000us-gaap_EquityMethodInvestmentAggregateCost / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = navb_RNAVMember |
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| Equity investment |
727,000us-gaap_EquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = navb_RNAVMember |
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| Deferred equity investment |
500,000navb_DeferredEquityInvestment / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = navb_RNAVMember |
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| Loss from equity method investment |
523,809us-gaap_IncomeLossFromEquityMethodInvestments / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = navb_RNAVMember |
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| R-NAV [Member] | Series A Preferred Stock [Member] | |||||
| Schedule of Equity Method Investments [Line Items] | |||||
| Ownership shares received |
1,000,000navb_EquityMethodInvestmentOwnershipSharesReceived / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = navb_RNAVMember / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesAPreferredStockMember |
570,000navb_EquityMethodInvestmentOwnershipSharesReceived / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = navb_RNAVMember / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesAPreferredStockMember |
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| Ownership shares contingently receivable |
500,000navb_EquityMethodInvestmentOwnershipSharesContingentlyReceivable / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = navb_RNAVMember / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesAPreferredStockMember |
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| R-NAV [Member] | Federal Funds Rate [Member] | |||||
| Schedule of Equity Method Investments [Line Items] | |||||
| Debt instrument, spread on variable rate |
0.31%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = navb_RNAVMember / us-gaap_VariableRateAxis = navb_FederalFundsRateMember |
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| R-NAV [Member] | Commitment to Invest [Member] | |||||
| Schedule of Equity Method Investments [Line Items] | |||||
| Other commitment |
1,000,000us-gaap_OtherCommitment / us-gaap_OtherCommitmentsAxis = navb_CommitmenttoInvestMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = navb_RNAVMember |
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| R-NAV Subsidiary 1A [Member] | Call Option [Member] | |||||
| Schedule of Equity Method Investments [Line Items] | |||||
| Warrants and rights outstanding |
10,500,000us-gaap_WarrantsAndRightsOutstanding / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_CallOptionMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = navb_RNAVSubsidiary1AMember |
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| Equity investment |
$ 273,000us-gaap_EquityMethodInvestments / us-gaap_ClassOfWarrantOrRightAxis = us-gaap_CallOptionMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = navb_RNAVSubsidiary1AMember |
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| X | ||||||||||
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- Definition
Value of services to be provided/contributed to R-NAV in the future No definition available.
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- Definition
Equity Method Investment, Additional Capitalization No definition available.
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- Definition
Equity Method Investment, Initial Capitalization No definition available.
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- Definition
Equity Method Investment, Ownership, Shares Contingently Receivable No definition available.
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- Definition
Equity Method Investment, Ownership, Shares Received No definition available.
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- Definition
Equity Method Investment, Promissory Note Payable No definition available.
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- Definition
Percentage points added to the reference rate to compute the variable rate on the debt instrument. No definition available.
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- Definition
This element represents the aggregate cost of investments accounted for under the equity method of accounting. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. No definition available.
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- Definition
The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The price per share at which the preferred stock of an entity that has priority over common stock in the distribution of dividends and in the event of liquidation of the entity is redeemed or may be called at. The redemption features of this preferred stock are solely within the control of the issuer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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| X | ||||||||||
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- Definition
Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Details
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