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CAPITAL LEASE PAYABLE (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended 1 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Feb. 28, 2011
Capital lease obligation        
Less: current portion   $ (3)us-gaap_CapitalLeaseObligationsCurrent    
Capital lease information        
Depreciation expense 752us-gaap_Depreciation 740us-gaap_Depreciation 367us-gaap_Depreciation  
Assets under capital lease        
Capital lease obligation        
Capital lease payable   3us-gaap_CapitalLeaseObligations
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_AssetsHeldUnderCapitalLeasesMember
   
Less: current portion   (3)us-gaap_CapitalLeaseObligationsCurrent
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_AssetsHeldUnderCapitalLeasesMember
   
Capital lease information        
Value of equipment acquired under capital lease agreement       124us-gaap_CapitalLeasedAssetsGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_AssetsHeldUnderCapitalLeasesMember
Down payment on capital lease agreement       31us-gaap_PaymentsToAcquireEquipmentOnLease
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_AssetsHeldUnderCapitalLeasesMember
Monthly installments       3nviv_CapitalLeaseObligationMonthlyInstallmentPayments
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_AssetsHeldUnderCapitalLeasesMember
Capital lease payable period       36 months
Final payment due date       Jan. 01, 2014
Interest expense recorded on the capital lease 0us-gaap_InterestExpenseLesseeAssetsUnderCapitalLease
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_AssetsHeldUnderCapitalLeasesMember
1us-gaap_InterestExpenseLesseeAssetsUnderCapitalLease
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_AssetsHeldUnderCapitalLeasesMember
   
Depreciation expense 25us-gaap_Depreciation
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_AssetsHeldUnderCapitalLeasesMember
     
Net book value of capital lease $ 27us-gaap_CapitalLeasesBalanceSheetAssetsByMajorClassNet
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_AssetsHeldUnderCapitalLeasesMember
$ 52us-gaap_CapitalLeasesBalanceSheetAssetsByMajorClassNet
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_AssetsHeldUnderCapitalLeasesMember