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Note 11 - Subsequent Events (Details) (USD $)
1 Months Ended 2 Months Ended 0 Months Ended 6 Months Ended 3 Months Ended 0 Months Ended 2 Months Ended 1 Months Ended
Feb. 28, 2015
Sep. 23, 2014
Nov. 30, 2014
May 14, 2015
Apr. 06, 2015
Apr. 06, 2015
Mar. 31, 2015
Mar. 16, 2015
Feb. 19, 2015
Mar. 31, 2015
Sep. 30, 2014
Note 11 - Subsequent Events (Details) [Line Items]                      
Stock Issued During Period, Shares, New Issues (in Shares)   11,305,567us-gaap_StockIssuedDuringPeriodSharesNewIssues                  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in Shares) 605,556us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights 940,189us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights 382,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights                
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per share) $ 0.50us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 $ 0.53us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 $ 0.53us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1                
Warrant Term 10 years 5 years 5 years                
Subsequent Event [Member] | Private Placement [Member]                      
Note 11 - Subsequent Events (Details) [Line Items]                      
Stock Issued During Period, Shares, New Issues (in Shares)       32,432,432us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_PrivatePlacementMember
             
Share Price (in Dollars per share)       $ 0.37us-gaap_SharePrice
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_PrivatePlacementMember
             
Proceeds from Issuance of Common Stock       $ 12,000,000us-gaap_ProceedsFromIssuanceOfCommonStock
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_PrivatePlacementMember
             
Subsequent Event [Member] | Second Tranche [Member] | September 2014 Term Loan [Member]                      
Note 11 - Subsequent Events (Details) [Line Items]                      
Proceeds from Loans         500,000us-gaap_ProceedsFromLoans
/ us-gaap_CreditFacilityAxis
= vivmf_September2014TermLoanMember
/ us-gaap_DebtInstrumentAxis
= vivmf_SecondTrancheMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
1,500,000us-gaap_ProceedsFromLoans
/ us-gaap_CreditFacilityAxis
= vivmf_September2014TermLoanMember
/ us-gaap_DebtInstrumentAxis
= vivmf_SecondTrancheMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
         
Debt Instrument, Repayment of Principal and Interest, Number of Installments         30vivmf_DebtInstrumentRepaymentOfPrincipalAndInterestNumberOfInstallments
/ us-gaap_CreditFacilityAxis
= vivmf_September2014TermLoanMember
/ us-gaap_DebtInstrumentAxis
= vivmf_SecondTrancheMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
           
Debt Instrument, Interest Rate, Stated Percentage         5.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_CreditFacilityAxis
= vivmf_September2014TermLoanMember
/ us-gaap_DebtInstrumentAxis
= vivmf_SecondTrancheMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
5.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_CreditFacilityAxis
= vivmf_September2014TermLoanMember
/ us-gaap_DebtInstrumentAxis
= vivmf_SecondTrancheMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
         
Subsequent Event [Member] | Third Tranche [Member] | September 2014 Term Loan [Member]                      
Note 11 - Subsequent Events (Details) [Line Items]                      
Debt Instrument, Face Amount       1,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_CreditFacilityAxis
= vivmf_September2014TermLoanMember
/ us-gaap_DebtInstrumentAxis
= vivmf_ThirdTrancheMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
             
Subsequent Event [Member]                      
Note 11 - Subsequent Events (Details) [Line Items]                      
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in Shares)       25,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
             
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per share)       $ 0.37us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
             
Warrant Term       10 years              
Private Placement [Member]                      
Note 11 - Subsequent Events (Details) [Line Items]                      
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in Shares)             940,189us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_PrivatePlacementMember
    940,189us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_PrivatePlacementMember
 
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per share)             $ 0.53us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_PrivatePlacementMember
    $ 0.53us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_PrivatePlacementMember
 
Warrant Term             5 years        
Second Tranche [Member] | September 2014 Term Loan [Member]                      
Note 11 - Subsequent Events (Details) [Line Items]                      
Proceeds from Loans               500,000us-gaap_ProceedsFromLoans
/ us-gaap_CreditFacilityAxis
= vivmf_September2014TermLoanMember
/ us-gaap_DebtInstrumentAxis
= vivmf_SecondTrancheMember
500,000us-gaap_ProceedsFromLoans
/ us-gaap_CreditFacilityAxis
= vivmf_September2014TermLoanMember
/ us-gaap_DebtInstrumentAxis
= vivmf_SecondTrancheMember
1,000,000us-gaap_ProceedsFromLoans
/ us-gaap_CreditFacilityAxis
= vivmf_September2014TermLoanMember
/ us-gaap_DebtInstrumentAxis
= vivmf_SecondTrancheMember
 
Debt Instrument, Repayment of Principal and Interest, Number of Installments                   30vivmf_DebtInstrumentRepaymentOfPrincipalAndInterestNumberOfInstallments
/ us-gaap_CreditFacilityAxis
= vivmf_September2014TermLoanMember
/ us-gaap_DebtInstrumentAxis
= vivmf_SecondTrancheMember
 
Debt Instrument, Interest Rate, Stated Percentage             5.06%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_CreditFacilityAxis
= vivmf_September2014TermLoanMember
/ us-gaap_DebtInstrumentAxis
= vivmf_SecondTrancheMember
5.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_CreditFacilityAxis
= vivmf_September2014TermLoanMember
/ us-gaap_DebtInstrumentAxis
= vivmf_SecondTrancheMember
  5.06%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_CreditFacilityAxis
= vivmf_September2014TermLoanMember
/ us-gaap_DebtInstrumentAxis
= vivmf_SecondTrancheMember
 
Debt Instrument, Face Amount                     1,500,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_CreditFacilityAxis
= vivmf_September2014TermLoanMember
/ us-gaap_DebtInstrumentAxis
= vivmf_SecondTrancheMember
Third Tranche [Member] | September 2014 Term Loan [Member]                      
Note 11 - Subsequent Events (Details) [Line Items]                      
Debt Instrument, Face Amount             1,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_CreditFacilityAxis
= vivmf_September2014TermLoanMember
/ us-gaap_DebtInstrumentAxis
= vivmf_ThirdTrancheMember
    1,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_CreditFacilityAxis
= vivmf_September2014TermLoanMember
/ us-gaap_DebtInstrumentAxis
= vivmf_ThirdTrancheMember
 
September 2014 Term Loan [Member]                      
Note 11 - Subsequent Events (Details) [Line Items]                      
Debt Instrument, Face Amount                     $ 5,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_CreditFacilityAxis
= vivmf_September2014TermLoanMember
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in Shares)                     471,698us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_CreditFacilityAxis
= vivmf_September2014TermLoanMember
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per share)                     $ 0.53us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_CreditFacilityAxis
= vivmf_September2014TermLoanMember
Warrant Term                     10 years