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WARRANTS (Details) (USD $)
12 Months Ended
Dec. 31, 2014
Warrants to purchase common stock issued and outstanding  
Number of Warrants 10,208,849us-gaap_ClassOfWarrantOrRightOutstanding
Weighted average exercise price $ 1.43nviv_WarrantsWeightedAverageExercisePrice
Weighted average life in years 3 years 9 months 22 days
Equity | Derivative with Exercise Price One  
Warrants to purchase common stock issued and outstanding  
Warrants Issued Year 2010
Number of Warrants 1,494,603us-gaap_ClassOfWarrantOrRightOutstanding
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Warrant Exercise Price 1.40us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights
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/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
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Equity | Derivative with Exercise Price One | Maximum  
Warrants to purchase common stock issued and outstanding  
Expiration date Dec. 03, 2017
Equity | Derivative with Exercise Price One | Minimum  
Warrants to purchase common stock issued and outstanding  
Expiration date Oct. 26, 2017
Equity | Derivative with Exercise Price Two  
Warrants to purchase common stock issued and outstanding  
Warrants Issued Year 2010
Number of Warrants 1,318,268us-gaap_ClassOfWarrantOrRightOutstanding
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Warrant Exercise Price 1.00us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights
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Equity | Derivative with Exercise Price Two | Maximum  
Warrants to purchase common stock issued and outstanding  
Expiration date Dec. 03, 2015
Equity | Derivative with Exercise Price Two | Minimum  
Warrants to purchase common stock issued and outstanding  
Expiration date Sep. 26, 2015
Equity | Derivative with Exercise Price Three  
Warrants to purchase common stock issued and outstanding  
Warrants Issued Year 2011
Number of Warrants 16,071us-gaap_ClassOfWarrantOrRightOutstanding
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Warrant Exercise Price 1.40us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights
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Expiration date Jun. 17, 2018
Equity | Derivative with Exercise Price Four  
Warrants to purchase common stock issued and outstanding  
Warrants Issued Year 2011
Number of Warrants 343,137us-gaap_ClassOfWarrantOrRightOutstanding
/ us-gaap_ClassOfWarrantOrRightAxis
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Warrant Exercise Price 3.06us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights
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Expiration date Dec. 21, 2016
Equity | Derivative with Exercise Price Five  
Warrants to purchase common stock issued and outstanding  
Warrants Issued Year 2012
Number of Warrants 36,145us-gaap_ClassOfWarrantOrRightOutstanding
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Warrant Exercise Price 1.66us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights
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Expiration date Oct. 05, 2019
Liability | Derivative With Exercise Price Six  
Warrants to purchase common stock issued and outstanding  
Warrants Issued Year 2014
Number of Warrants 7,000,625us-gaap_ClassOfWarrantOrRightOutstanding
/ us-gaap_ClassOfWarrantOrRightAxis
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Warrant Exercise Price 1.44us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights
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Expiration date May 09, 2019