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Note 10 - Convertible Preferred Stock (Details) (USD $)
 1 Months Ended 3 Months Ended 12 Months Ended 1 Months Ended 9 Months Ended 1 Months Ended
Sep. 23, 2014
Dec. 31, 2014
Dec. 31, 2014
Dec. 31, 2013
Dec. 30, 2013
Dec. 31, 2008
Apr. 30, 2009
Nov. 30, 2010
Apr. 30, 2012
Sep. 30, 2014
May 31, 2011
Jun. 30, 2011
Sep. 30, 2011
Nov. 30, 2011
Dec. 31, 2011
Jan. 31, 2012
Feb. 28, 2012
Dec. 31, 2012
Note 10 - Convertible Preferred Stock (Details) [Line Items]                                    
Class of Warrant or Right, Number of Securities Called by Warrants or Rights 940,189us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights 382,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights 382,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights                              
Class of Warrant or Right, Exercise Price of Warrants or Rights $ 0.53us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 $ 0.53us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 $ 0.53us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1                              
Warrant Term 5 years 5 years                                
Warrant Liabilities Noncurrent       $ 624,000vivmf_WarrantLiabilitiesNoncurrent                           $ 686,000vivmf_WarrantLiabilitiesNoncurrent
Fair Value Adjustment of Warrants     (52,000)us-gaap_FairValueAdjustmentOfWarrants (62,000)us-gaap_FairValueAdjustmentOfWarrants                            
Other Nonoperating Income (Expense) [Member] | Series A Preferred Stock [Member] | December 2008 Warrants [Member]                                    
Note 10 - Convertible Preferred Stock (Details) [Line Items]                                    
Fair Value Adjustment of Warrants     10,000us-gaap_FairValueAdjustmentOfWarrants
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Note 10 - Convertible Preferred Stock (Details) [Line Items]                                    
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Note 10 - Convertible Preferred Stock (Details) [Line Items]                                    
Fair Value Adjustment of Warrants     2,000us-gaap_FairValueAdjustmentOfWarrants
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Note 10 - Convertible Preferred Stock (Details) [Line Items]                                    
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Note 10 - Convertible Preferred Stock (Details) [Line Items]                                    
Fair Value Adjustment of Warrants     9,000us-gaap_FairValueAdjustmentOfWarrants
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Note 10 - Convertible Preferred Stock (Details) [Line Items]                                    
Fair Value Adjustment of Warrants     2,000us-gaap_FairValueAdjustmentOfWarrants
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Note 10 - Convertible Preferred Stock (Details) [Line Items]                                    
Fair Value Adjustment of Warrants     4,000us-gaap_FairValueAdjustmentOfWarrants
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Note 10 - Convertible Preferred Stock (Details) [Line Items]                                    
Fair Value Adjustment of Warrants     0us-gaap_FairValueAdjustmentOfWarrants
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Note 10 - Convertible Preferred Stock (Details) [Line Items]                                    
Fair Value Adjustment of Warrants     1,000us-gaap_FairValueAdjustmentOfWarrants
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Note 10 - Convertible Preferred Stock (Details) [Line Items]                                    
Fair Value Adjustment of Warrants     4,000us-gaap_FairValueAdjustmentOfWarrants
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Note 10 - Convertible Preferred Stock (Details) [Line Items]                                    
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Note 10 - Convertible Preferred Stock (Details) [Line Items]                                    
Class of Warrant or Right, Number of Securities Called by Warrants or Rights       196,721us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
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Warrant Liabilities Noncurrent       44,000vivmf_WarrantLiabilitiesNoncurrent
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Note 10 - Convertible Preferred Stock (Details) [Line Items]                                    
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= us-gaap_SeriesAPreferredStockMember		                
Preferred Stock, Dividends Per Share, Declared                   $ 0us-gaap_PreferredStockDividendsPerShareDeclared
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesAPreferredStockMember		                
Preferred Stock, Conversion Price                   $ 0.05vivmf_PreferredStockConversionPrice
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesAPreferredStockMember		                
Convertible Preferred Stock, Terms of Conversion, Minimum Aggregate Gross Proceeds Required for Automatic Conversion                   30,000,000vivmf_ConvertiblePreferredStockTermsOfConversionMinimumAggregateGrossProceedsRequiredForAutomaticConversion
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesAPreferredStockMember		                
Series B Preferred Stock [Member] | April 2012 Warrants [Member]                                    
Note 10 - Convertible Preferred Stock (Details) [Line Items]                                    
Class of Warrant or Right, Number of Securities Called by Warrants or Rights       2,351,019us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_April2012WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		         2,351,019us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_April2012WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		                  
Class of Warrant or Right, Exercise Price of Warrants or Rights       $ 0.05us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_April2012WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		         $ 0.05us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_April2012WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		                  
Warrant Term                 10 years                  
Warrant Liabilities Noncurrent       73,000vivmf_WarrantLiabilitiesNoncurrent
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_April2012WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		         99,000vivmf_WarrantLiabilitiesNoncurrent
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_April2012WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		                  
Fair Value Assumptions, Expected Dividend Rate                 0.00%us-gaap_FairValueAssumptionsExpectedDividendRate
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_April2012WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		                  
Fair Value Assumptions, Expected Volatility Rate                 84.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_April2012WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		                  
Fair Value Assumptions, Risk Free Interest Rate                 2.00%us-gaap_FairValueAssumptionsRiskFreeInterestRate
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_April2012WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		                  
Fair Value Assumptions, Expected Term                 10 years                  
Series B Preferred Stock [Member] | May 2011 Warrants [Member]                                    
Note 10 - Convertible Preferred Stock (Details) [Line Items]                                    
Class of Warrant or Right, Number of Securities Called by Warrants or Rights       2,000,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_May2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		             2,000,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_May2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		              
Class of Warrant or Right, Exercise Price of Warrants or Rights       $ 0.05us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_May2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		             $ 0.05us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_May2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		              
Warrant Term                     10 years              
Warrant Liabilities Noncurrent       54,000vivmf_WarrantLiabilitiesNoncurrent
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_May2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		             84,000vivmf_WarrantLiabilitiesNoncurrent
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_May2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		              
Fair Value Assumptions, Expected Dividend Rate                     0.00%us-gaap_FairValueAssumptionsExpectedDividendRate
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_May2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		              
Fair Value Assumptions, Expected Volatility Rate                     84.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_May2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		              
Fair Value Assumptions, Risk Free Interest Rate                     3.20%us-gaap_FairValueAssumptionsRiskFreeInterestRate
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_May2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		              
Fair Value Assumptions, Expected Term                     10 years              
Series B Preferred Stock [Member] | June 2011 Warrants [Member]                                    
Note 10 - Convertible Preferred Stock (Details) [Line Items]                                    
Class of Warrant or Right, Number of Securities Called by Warrants or Rights       4,000,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_June2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		               4,000,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_June2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		            
Class of Warrant or Right, Exercise Price of Warrants or Rights       $ 0.05us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_June2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		               $ 0.05us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_June2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		            
Warrant Term                       10 years            
Warrant Liabilities Noncurrent       108,000vivmf_WarrantLiabilitiesNoncurrent
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_June2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		               168,000vivmf_WarrantLiabilitiesNoncurrent
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_June2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		            
Fair Value Assumptions, Expected Dividend Rate                       0.00%us-gaap_FairValueAssumptionsExpectedDividendRate
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_June2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		            
Fair Value Assumptions, Expected Volatility Rate                       84.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_June2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		            
Fair Value Assumptions, Risk Free Interest Rate                       3.20%us-gaap_FairValueAssumptionsRiskFreeInterestRate
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_June2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		            
Fair Value Assumptions, Expected Term                       10 years            
Series B Preferred Stock [Member] | September 2011 Warrants [Member]                                    
Note 10 - Convertible Preferred Stock (Details) [Line Items]                                    
Class of Warrant or Right, Number of Securities Called by Warrants or Rights       4,000,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_September2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		                 4,000,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_September2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		          
Class of Warrant or Right, Exercise Price of Warrants or Rights       $ 0.05us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_September2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		                 $ 0.05us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_September2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		          
Warrant Term                         10 years          
Warrant Liabilities Noncurrent       108,000vivmf_WarrantLiabilitiesNoncurrent
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_September2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		                 168,000vivmf_WarrantLiabilitiesNoncurrent
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_September2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		          
Fair Value Assumptions, Expected Dividend Rate                         0.00%us-gaap_FairValueAssumptionsExpectedDividendRate
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_September2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		          
Fair Value Assumptions, Expected Volatility Rate                         84.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_September2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		          
Fair Value Assumptions, Risk Free Interest Rate                         2.00%us-gaap_FairValueAssumptionsRiskFreeInterestRate
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_September2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		          
Fair Value Assumptions, Expected Term                         10 years          
Series B Preferred Stock [Member] | November 2011 Warrants [Member]                                    
Note 10 - Convertible Preferred Stock (Details) [Line Items]                                    
Class of Warrant or Right, Number of Securities Called by Warrants or Rights       1,000,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_November2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		                   1,000,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_November2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		        
Class of Warrant or Right, Exercise Price of Warrants or Rights       $ 0.05us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_November2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		                   $ 0.05us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_November2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		        
Warrant Term                           10 years        
Warrant Liabilities Noncurrent       28,000vivmf_WarrantLiabilitiesNoncurrent
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_November2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		                   42,000vivmf_WarrantLiabilitiesNoncurrent
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_November2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		        
Fair Value Assumptions, Expected Dividend Rate                           0.00%us-gaap_FairValueAssumptionsExpectedDividendRate
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_November2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		        
Fair Value Assumptions, Expected Volatility Rate                           84.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_November2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		        
Fair Value Assumptions, Risk Free Interest Rate                           2.10%us-gaap_FairValueAssumptionsRiskFreeInterestRate
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_November2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		        
Fair Value Assumptions, Expected Term                           10 years        
Series B Preferred Stock [Member] | December 2011 Warrants [Member]                                    
Note 10 - Convertible Preferred Stock (Details) [Line Items]                                    
Class of Warrant or Right, Number of Securities Called by Warrants or Rights       1,000,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_December2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		                     1,000,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_December2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		      
Class of Warrant or Right, Exercise Price of Warrants or Rights       $ 0.05us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_December2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		                     $ 0.05us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_December2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		      
Warrant Term                             10 years      
Warrant Liabilities Noncurrent       28,000vivmf_WarrantLiabilitiesNoncurrent
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_December2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		                     41,000vivmf_WarrantLiabilitiesNoncurrent
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_December2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		      
Fair Value Assumptions, Expected Dividend Rate                             0.00%us-gaap_FairValueAssumptionsExpectedDividendRate
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_December2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		      
Fair Value Assumptions, Expected Volatility Rate                             84.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_December2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		      
Fair Value Assumptions, Risk Free Interest Rate                             1.80%us-gaap_FairValueAssumptionsRiskFreeInterestRate
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_December2011WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		      
Fair Value Assumptions, Expected Term                             10 years      
Series B Preferred Stock [Member] | January 2012 Warrants [Member]                                    
Note 10 - Convertible Preferred Stock (Details) [Line Items]                                    
Class of Warrant or Right, Number of Securities Called by Warrants or Rights       910,445us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_January2012WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		                       910,445us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_January2012WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		    
Class of Warrant or Right, Exercise Price of Warrants or Rights       $ 0.05us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_January2012WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		                       $ 0.05us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_January2012WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		    
Warrant Term                               10 years    
Warrant Liabilities Noncurrent       28,000vivmf_WarrantLiabilitiesNoncurrent
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_January2012WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		                       37,000vivmf_WarrantLiabilitiesNoncurrent
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_January2012WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		    
Fair Value Assumptions, Expected Dividend Rate                               0.00%us-gaap_FairValueAssumptionsExpectedDividendRate
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_January2012WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		    
Fair Value Assumptions, Expected Volatility Rate                               84.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_January2012WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		    
Fair Value Assumptions, Risk Free Interest Rate                               1.80%us-gaap_FairValueAssumptionsRiskFreeInterestRate
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_January2012WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		    
Fair Value Assumptions, Expected Term                               10 years    
Series B Preferred Stock [Member] | February 2012 Warrants [Member]                                    
Note 10 - Convertible Preferred Stock (Details) [Line Items]                                    
Class of Warrant or Right, Number of Securities Called by Warrants or Rights       738,535us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_February2012WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		                         738,535us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_February2012WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		  
Class of Warrant or Right, Exercise Price of Warrants or Rights       $ 0.05us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_February2012WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		                         $ 0.05us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_February2012WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		  
Warrant Term                                 10 years  
Warrant Liabilities Noncurrent       23,000vivmf_WarrantLiabilitiesNoncurrent
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_February2012WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		                         31,000vivmf_WarrantLiabilitiesNoncurrent
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_February2012WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		  
Fair Value Assumptions, Expected Dividend Rate                                 0.00%us-gaap_FairValueAssumptionsExpectedDividendRate
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_February2012WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		  
Fair Value Assumptions, Expected Volatility Rate                                 84.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_February2012WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		  
Fair Value Assumptions, Risk Free Interest Rate                                 1.98%us-gaap_FairValueAssumptionsRiskFreeInterestRate
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_February2012WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		  
Fair Value Assumptions, Expected Term                                 10 years  
Series B Preferred Stock [Member]                                    
Note 10 - Convertible Preferred Stock (Details) [Line Items]                                    
Preferred Stock, Dividend Rate, Per-Dollar-Amount                   $ 0.004us-gaap_PreferredStockDividendRatePerDollarAmount
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		                
Preferred Stock, Dividends Per Share, Declared                   $ 0us-gaap_PreferredStockDividendsPerShareDeclared
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		                
Preferred Stock, Conversion Price                   $ 0.05vivmf_PreferredStockConversionPrice
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		                
Convertible Preferred Stock, Terms of Conversion, Minimum Aggregate Gross Proceeds Required for Automatic Conversion                   $ 30,000,000vivmf_ConvertiblePreferredStockTermsOfConversionMinimumAggregateGrossProceedsRequiredForAutomaticConversion
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		                
April 2012 Warrants [Member]                                    
Note 10 - Convertible Preferred Stock (Details) [Line Items]                                    
Class of Warrant or Right, Number of Securities Called by Warrants or Rights                 73,770us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_April2012WarrantsMember		                  
Class of Warrant or Right, Exercise Price of Warrants or Rights                 $ 0.61us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_April2012WarrantsMember