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Note 11 - Summary of Stock Options (Details) (USD $)
 1 Months Ended 12 Months Ended
Sep. 23, 2014
Dec. 31, 2014
Dec. 31, 2013
Sep. 22, 2014
Note 11 - Summary of Stock Options (Details) [Line Items]        
Conversion of Stock, Exchange Ratio 0.0080497vivmf_ConversionOfStockExchangeRatio      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant   841,739us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross   1,901,476us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross 95,581us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross  
Allocated Share-based Compensation Expense   $ 184,000us-gaap_AllocatedShareBasedCompensationExpense $ 87,000us-gaap_AllocatedShareBasedCompensationExpense  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options   496,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value   0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value   0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value   44,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1 140,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1  
Stock Options, Acceleration of Vesting, Number   140,000vivmf_StockOptionsAccelerationOfVestingNumber    
Selling, General and Administrative Expenses [Member] | Acceleration of Vesting of Approximately 140,000 Affected Stock Options [Member]        
Note 11 - Summary of Stock Options (Details) [Line Items]        
Allocated Share-based Compensation Expense   103,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_SellingGeneralAndAdministrativeExpensesMember
/ us-gaap_VestingAxis
= vivmf_AccelerationOfVestingOfApproximately140000AffectedStockOptionsMember		    
Employee Stock Option [Member]        
Note 11 - Summary of Stock Options (Details) [Line Items]        
Allocated Share-based Compensation Expense   $ 184,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember		 $ 87,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember		  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition   3 years 266 days    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate   0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember		 0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember		  
Holdings Greater than 10% of Shares Outstanding [Member] | The 2013 Plan [Member]        
Note 11 - Summary of Stock Options (Details) [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period   5 years    
Employees [Member]        
Note 11 - Summary of Stock Options (Details) [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross   1,901,476us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_TitleOfIndividualAxis
= vivmf_EmployeesMember		    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value   $ 0.32us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_TitleOfIndividualAxis
= vivmf_EmployeesMember		    
2005 Plan [Member]        
Note 11 - Summary of Stock Options (Details) [Line Items]        
Common Stock, Capital Shares Reserved for Future Issuance   22,095us-gaap_CommonStockCapitalSharesReservedForFutureIssuance
/ us-gaap_PlanNameAxis
= vivmf_TwoThousandFivePlanMember		    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number   22,095us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_PlanNameAxis
= vivmf_TwoThousandFivePlanMember		    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price   $ 12.83us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_PlanNameAxis
= vivmf_TwoThousandFivePlanMember		    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term   5 years 109 days    
The 2006 Stock Option Plan [Member]        
Note 11 - Summary of Stock Options (Details) [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number   322,069us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_PlanNameAxis
= vivmf_The2006StockOptionPlanMember		    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price   $ 1.54us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_PlanNameAxis
= vivmf_The2006StockOptionPlanMember		    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term   7 years 299 days    
Conversion of Stock, Exchange Ratio   0.0080497vivmf_ConversionOfStockExchangeRatio
/ us-gaap_PlanNameAxis
= vivmf_The2006StockOptionPlanMember		    
The 2013 Plan [Member]        
Note 11 - Summary of Stock Options (Details) [Line Items]        
Common Stock, Capital Shares Reserved for Future Issuance   841,739us-gaap_CommonStockCapitalSharesReservedForFutureIssuance
/ us-gaap_PlanNameAxis
= vivmf_The2013PlanMember		    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number   1,947,619us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_PlanNameAxis
= vivmf_The2013PlanMember		    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price   $ 0.80us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_PlanNameAxis
= vivmf_The2013PlanMember		    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term   9 years 226 days    
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period   10 years    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period   4 years    
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Outstanding Stock Maximum   10.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfOutstandingStockMaximum
/ us-gaap_PlanNameAxis
= vivmf_The2013PlanMember		    
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent   110.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent
/ us-gaap_PlanNameAxis
= vivmf_The2013PlanMember		    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized 3,111,587us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= vivmf_The2013PlanMember		     113,826us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= vivmf_The2013PlanMember