v2.4.1.9

STOCKHOLDERS' EQUITY (DEFICIENCY) (Details Narrative) (USD $) In Thousands, except Share data, unless otherwise specified	1 Months Ended	3 Months Ended
	Jan. 31, 2015	Mar. 31, 2015	Mar. 31, 2014	Mar. 25, 2015	Feb. 28, 2015	Dec. 31, 2014	Feb. 28, 2013
Common stock shares issued	216,667us-gaap_CommonStockSharesIssued	380,247us-gaap_CommonStockSharesIssued				163,580us-gaap_CommonStockSharesIssued
Common stock shares issued exercise price	$ 3.00us-gaap_SharesIssuedPricePerShare
Issued warrant to purchase of common stock	420,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights			61,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights		563,910us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights	37,594us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Warrant to purchase of common stock exercise price	$ 6.00us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1			$ 2.57us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1			$ 2.66us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Proceeds from issuance of sale of equity	$ 3,005us-gaap_ProceedsFromIssuanceOrSaleOfEquity	$ 3,005us-gaap_ProceedsFromIssuanceOrSaleOfEquity
Issuance costs net	145us-gaap_PaymentsOfStockIssuanceCosts
Promissiory note aggregate investment amount					$ 3,150us-gaap_EquityMethodInvestmentAggregateCost
Series C Preferred Stock [Member]
Common stock shares issued	833,333us-gaap_CommonStockSharesIssued / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesCPreferredStockMember
Convertible stock					123,057us-gaap_ConvertiblePreferredStockSharesIssuedUponConversion / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesCPreferredStockMember
Series B-1 Preferred stock [Member]
Convertible stock					560,594us-gaap_ConvertiblePreferredStockSharesIssuedUponConversion / us-gaap_StatementClassOfStockAxis = naov_SeriesBOnePreferredStockMember
Series B-2 Preferred stock [Member]
Convertible stock					1,174,042us-gaap_ConvertiblePreferredStockSharesIssuedUponConversion / us-gaap_StatementClassOfStockAxis = naov_SeriesBTwoPreferredStockMember
Series C Preferred stock One [Member]
Convertible stock					333,959us-gaap_ConvertiblePreferredStockSharesIssuedUponConversion / us-gaap_StatementClassOfStockAxis = naov_SeriesCPreferredStockOneMember

X

- Definition

Exercise price per share or per unit of warrants or rights outstanding.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

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X

- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

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- Definition

Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Number of shares issued for each share of convertible preferred stock that is converted.

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- Definition

This element represents the aggregate cost of investments accounted for under the equity method of accounting.

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The cash outflow for cost incurred directly with the issuance of an equity security.

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The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity.

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Amount per share or per unit of equity securities issued by non-development stage entity.

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No definition available.

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