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Note 10 - Convertible Preferred Stock (Details) (USD $)
 1 Months Ended 2 Months Ended 3 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 9 Months Ended
Feb. 28, 2015
Sep. 23, 2014
Nov. 30, 2014
Dec. 31, 2014
Mar. 31, 2014
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2008
Dec. 30, 2013
Apr. 30, 2009
Nov. 30, 2010
Apr. 30, 2012
May 31, 2011
Jun. 30, 2011
Sep. 30, 2011
Nov. 30, 2011
Dec. 31, 2011
Jan. 31, 2012
Feb. 28, 2012
Sep. 30, 2014
Dec. 31, 2012
Note 10 - Convertible Preferred Stock (Details) [Line Items]                                          
Class of Warrant or Right, Number of Securities Called by Warrants or Rights 605,556us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights 940,189us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights 382,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights 382,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights   382,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights                              
Class of Warrant or Right, Exercise Price of Warrants or Rights $ 0.50us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 $ 0.53us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 $ 0.53us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 $ 0.53us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1   $ 0.53us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1                           $ 0.53us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1  
Warrant Term 10 years 5 years 5 years 5 years                                  
Warrant Liabilities Noncurrent             $ 624,000vivmf_WarrantLiabilitiesNoncurrent                           $ 686,000vivmf_WarrantLiabilitiesNoncurrent
Fair Value Adjustment of Warrants         (21,000)us-gaap_FairValueAdjustmentOfWarrants (52,000)us-gaap_FairValueAdjustmentOfWarrants (62,000)us-gaap_FairValueAdjustmentOfWarrants                            
December 2008 Warrants [Member] | Other Nonoperating Income (Expense) [Member] | Series A Preferred Stock [Member]                                          
Note 10 - Convertible Preferred Stock (Details) [Line Items]                                          
Fair Value Adjustment of Warrants           10,000us-gaap_FairValueAdjustmentOfWarrants
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_December2008WarrantsMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_OtherNonoperatingIncomeExpenseMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesAPreferredStockMember		 7,000us-gaap_FairValueAdjustmentOfWarrants
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= vivmf_December2008WarrantsMember
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_OtherNonoperatingIncomeExpenseMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesAPreferredStockMember		                            
December 2008 Warrants [Member] | Series A Preferred Stock [Member]                                          
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
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_December2008WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesAPreferredStockMember		 196,721us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_December2008WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesAPreferredStockMember		                          
Class of Warrant or Right, Exercise Price of Warrants or Rights             $ 0.61us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_December2008WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesAPreferredStockMember		 $ 0.61us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_December2008WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesAPreferredStockMember		                          
Warrant Term               10 years                          
Warrant Liabilities Noncurrent             44,000vivmf_WarrantLiabilitiesNoncurrent
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_December2008WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesAPreferredStockMember		 54,000vivmf_WarrantLiabilitiesNoncurrent
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_December2008WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesAPreferredStockMember		                          
Fair Value Assumptions, Expected Dividend Rate               0.00%us-gaap_FairValueAssumptionsExpectedDividendRate
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_December2008WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesAPreferredStockMember		                          
Fair Value Assumptions, Expected Volatility Rate               79.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_December2008WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesAPreferredStockMember		                          
Fair Value Assumptions, Risk Free Interest Rate               2.70%us-gaap_FairValueAssumptionsRiskFreeInterestRate
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_December2008WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesAPreferredStockMember		                          
Fair Value Assumptions, Expected Term               10 years                          
April 2009 Warrants [Member] | Other Nonoperating Income (Expense) [Member] | Series A Preferred Stock [Member]                                          
Note 10 - Convertible Preferred Stock (Details) [Line Items]                                          
Fair Value Adjustment of Warrants           12,000us-gaap_FairValueAdjustmentOfWarrants
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_April2009WarrantsMember
/ us-gaap_IncomeStatementLocationAxis
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April 2009 Warrants [Member] | Series A Preferred Stock [Member]                                          
Note 10 - Convertible Preferred Stock (Details) [Line Items]                                          
Class of Warrant or Right, Number of Securities Called by Warrants or Rights             245,900us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_April2009WarrantsMember
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= us-gaap_SeriesAPreferredStockMember		     245,900us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
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= vivmf_April2009WarrantsMember
/ us-gaap_StatementClassOfStockAxis
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Class of Warrant or Right, Exercise Price of Warrants or Rights             $ 0.61us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_April2009WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesAPreferredStockMember		     $ 0.61us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_April2009WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesAPreferredStockMember		                      
Warrant Term                   10 years                      
Warrant Liabilities Noncurrent             58,000vivmf_WarrantLiabilitiesNoncurrent
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_April2009WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesAPreferredStockMember		     70,000vivmf_WarrantLiabilitiesNoncurrent
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_April2009WarrantsMember
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= us-gaap_SeriesAPreferredStockMember		                      
Fair Value Assumptions, Expected Dividend Rate                   0.00%us-gaap_FairValueAssumptionsExpectedDividendRate
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_April2009WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesAPreferredStockMember		                      
Fair Value Assumptions, Expected Volatility Rate                   79.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_April2009WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesAPreferredStockMember		                      
Fair Value Assumptions, Risk Free Interest Rate                   2.80%us-gaap_FairValueAssumptionsRiskFreeInterestRate
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_April2009WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesAPreferredStockMember		                      
Fair Value Assumptions, Expected Term                   10 years                      
November 2010 Warrants [Member] | Other Nonoperating Income (Expense) [Member] | Series A Preferred Stock [Member]                                          
Note 10 - Convertible Preferred Stock (Details) [Line Items]                                          
Fair Value Adjustment of Warrants           2,000us-gaap_FairValueAdjustmentOfWarrants
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_November2010WarrantsMember
/ us-gaap_IncomeStatementLocationAxis
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/ us-gaap_StatementClassOfStockAxis
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November 2010 Warrants [Member] | Series A Preferred Stock [Member]                                          
Note 10 - Convertible Preferred Stock (Details) [Line Items]                                          
Class of Warrant or Right, Number of Securities Called by Warrants or Rights             163,934us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_November2010WarrantsMember
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Class of Warrant or Right, Exercise Price of Warrants or Rights             $ 0.61us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_November2010WarrantsMember
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= us-gaap_SeriesAPreferredStockMember		       $ 0.61us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
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= vivmf_November2010WarrantsMember
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Warrant Term                     10 years                    
Warrant Liabilities Noncurrent             47,000vivmf_WarrantLiabilitiesNoncurrent
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_November2010WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesAPreferredStockMember		       47,000vivmf_WarrantLiabilitiesNoncurrent
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= vivmf_November2010WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesAPreferredStockMember		                    
Fair Value Assumptions, Expected Dividend Rate                     0.00%us-gaap_FairValueAssumptionsExpectedDividendRate
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_November2010WarrantsMember
/ us-gaap_StatementClassOfStockAxis
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Fair Value Assumptions, Expected Volatility Rate                     79.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_November2010WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesAPreferredStockMember		                    
Fair Value Assumptions, Risk Free Interest Rate                     2.90%us-gaap_FairValueAssumptionsRiskFreeInterestRate
/ us-gaap_ClassOfWarrantOrRightAxis
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Fair Value Assumptions, Expected Term                     10 years                    
April 2012 Warrants [Member] | Other Nonoperating Income (Expense) [Member] | Series A Preferred Stock [Member]                                          
Note 10 - Convertible Preferred Stock (Details) [Line Items]                                          
Fair Value Adjustment of Warrants           3,000us-gaap_FairValueAdjustmentOfWarrants
/ us-gaap_ClassOfWarrantOrRightAxis
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April 2012 Warrants [Member] | Other Nonoperating Income (Expense) [Member] | Series B Preferred Stock [Member]                                          
Note 10 - Convertible Preferred Stock (Details) [Line Items]                                          
Fair Value Adjustment of Warrants           9,000us-gaap_FairValueAdjustmentOfWarrants
/ us-gaap_ClassOfWarrantOrRightAxis
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April 2012 Warrants [Member] | Series A Preferred Stock [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
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Class of Warrant or Right, Exercise Price of Warrants or Rights             $ 0.61us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_April2012WarrantsMember
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Warrant Term                       10 years                  
Warrant Liabilities Noncurrent             25,000vivmf_WarrantLiabilitiesNoncurrent
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_April2012WarrantsMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesAPreferredStockMember		         27,000vivmf_WarrantLiabilitiesNoncurrent
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Fair Value Assumptions, Expected Dividend Rate                       0.00%us-gaap_FairValueAssumptionsExpectedDividendRate
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Fair Value Assumptions, Expected Volatility Rate                       92.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ us-gaap_ClassOfWarrantOrRightAxis
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Fair Value Assumptions, Risk Free Interest Rate                       1.98%us-gaap_FairValueAssumptionsRiskFreeInterestRate
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Fair Value Assumptions, Expected Term                       10 years                  
April 2012 Warrants [Member] | Series B Preferred Stock [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
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Class of Warrant or Right, Exercise Price of Warrants or Rights             $ 0.05us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_April2012WarrantsMember
/ us-gaap_StatementClassOfStockAxis
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Warrant Term                       10 years                  
Warrant Liabilities Noncurrent             73,000vivmf_WarrantLiabilitiesNoncurrent
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_April2012WarrantsMember
/ us-gaap_StatementClassOfStockAxis
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Fair Value Assumptions, Expected Dividend Rate                       0.00%us-gaap_FairValueAssumptionsExpectedDividendRate
/ us-gaap_ClassOfWarrantOrRightAxis
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Fair Value Assumptions, Expected Volatility Rate                       84.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_April2012WarrantsMember
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Fair Value Assumptions, Risk Free Interest Rate                       2.00%us-gaap_FairValueAssumptionsRiskFreeInterestRate
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= vivmf_April2012WarrantsMember
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Fair Value Assumptions, Expected Term                       10 years                  
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		                  
May 2011 Warrants [Member] | Other Nonoperating Income (Expense) [Member] | Series B Preferred Stock [Member]                                          
Note 10 - Convertible Preferred Stock (Details) [Line Items]                                          
Fair Value Adjustment of Warrants           2,000us-gaap_FairValueAdjustmentOfWarrants
/ us-gaap_ClassOfWarrantOrRightAxis
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/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember		                            
May 2011 Warrants [Member] | Series B Preferred Stock [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
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Warrant Term                         10 years                
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Note 10 - Convertible Preferred Stock (Details) [Line Items]                                          
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June 2011 Warrants [Member] | Series B Preferred Stock [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
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Warrant Term                           10 years              
Warrant Liabilities Noncurrent             108,000vivmf_WarrantLiabilitiesNoncurrent
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Fair Value Assumptions, Expected Term                           10 years              
September 2011 Warrants [Member] | Other Nonoperating Income (Expense) [Member] | Series B Preferred Stock [Member]                                          
Note 10 - Convertible Preferred Stock (Details) [Line Items]                                          
Fair Value Adjustment of Warrants           0us-gaap_FairValueAdjustmentOfWarrants
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September 2011 Warrants [Member] | Series B Preferred Stock [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
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/ us-gaap_StatementClassOfStockAxis
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Warrant Term                             10 years            
Warrant Liabilities Noncurrent             108,000vivmf_WarrantLiabilitiesNoncurrent
/ us-gaap_ClassOfWarrantOrRightAxis
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/ us-gaap_StatementClassOfStockAxis
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Fair Value Assumptions, Expected Volatility Rate                             84.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ us-gaap_ClassOfWarrantOrRightAxis
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Fair Value Assumptions, Risk Free Interest Rate                             2.00%us-gaap_FairValueAssumptionsRiskFreeInterestRate
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Fair Value Assumptions, Expected Term                             10 years            
November 2011 Warrants [Member] | Other Nonoperating Income (Expense) [Member] | Series B Preferred Stock [Member]                                          
Note 10 - Convertible Preferred Stock (Details) [Line Items]                                          
Fair Value Adjustment of Warrants           1,000us-gaap_FairValueAdjustmentOfWarrants
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November 2011 Warrants [Member] | Series B Preferred Stock [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
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Warrant Term                               10 years          
Warrant Liabilities Noncurrent             28,000vivmf_WarrantLiabilitiesNoncurrent
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/ us-gaap_StatementClassOfStockAxis
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/ us-gaap_ClassOfWarrantOrRightAxis
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Fair Value Assumptions, Expected Volatility Rate                               84.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate
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Fair Value Assumptions, Expected Term                               10 years          
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Note 10 - Convertible Preferred Stock (Details) [Line Items]                                          
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Class of Warrant or Right, Exercise Price of Warrants or Rights             $ 0.05us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
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/ us-gaap_StatementClassOfStockAxis
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Warrant Term                                 10 years        
Warrant Liabilities Noncurrent             28,000vivmf_WarrantLiabilitiesNoncurrent
/ us-gaap_ClassOfWarrantOrRightAxis
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/ us-gaap_StatementClassOfStockAxis
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Fair Value Assumptions, Expected Dividend Rate                                 0.00%us-gaap_FairValueAssumptionsExpectedDividendRate
/ us-gaap_ClassOfWarrantOrRightAxis
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/ us-gaap_StatementClassOfStockAxis
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Fair Value Assumptions, Expected Volatility Rate                                 84.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ us-gaap_ClassOfWarrantOrRightAxis
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/ us-gaap_StatementClassOfStockAxis
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Fair Value Assumptions, Risk Free Interest Rate                                 1.80%us-gaap_FairValueAssumptionsRiskFreeInterestRate
/ us-gaap_ClassOfWarrantOrRightAxis
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/ us-gaap_StatementClassOfStockAxis
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Fair Value Assumptions, Expected Term                                 10 years        
January 2012 Warrants [Member] | Other Nonoperating Income (Expense) [Member] | Series B Preferred Stock [Member]                                          
Note 10 - Convertible Preferred Stock (Details) [Line Items]                                          
Fair Value Adjustment of Warrants           4,000us-gaap_FairValueAdjustmentOfWarrants
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/ us-gaap_StatementClassOfStockAxis
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January 2012 Warrants [Member] | Series B Preferred Stock [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
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/ us-gaap_StatementClassOfStockAxis
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/ us-gaap_StatementClassOfStockAxis
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Warrant Term                                   10 years      
Warrant Liabilities Noncurrent             28,000vivmf_WarrantLiabilitiesNoncurrent
/ us-gaap_ClassOfWarrantOrRightAxis
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/ us-gaap_StatementClassOfStockAxis
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/ us-gaap_StatementClassOfStockAxis
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Fair Value Assumptions, Expected Dividend Rate                                   0.00%us-gaap_FairValueAssumptionsExpectedDividendRate
/ us-gaap_ClassOfWarrantOrRightAxis
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/ us-gaap_StatementClassOfStockAxis
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Fair Value Assumptions, Expected Volatility Rate                                   84.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ us-gaap_ClassOfWarrantOrRightAxis
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/ us-gaap_StatementClassOfStockAxis
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Fair Value Assumptions, Risk Free Interest Rate                                   1.80%us-gaap_FairValueAssumptionsRiskFreeInterestRate
/ us-gaap_ClassOfWarrantOrRightAxis
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/ us-gaap_StatementClassOfStockAxis
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Fair Value Assumptions, Expected Term                                   10 years      
February 2012 Warrants [Member] | Other Nonoperating Income (Expense) [Member] | Series B Preferred Stock [Member]                                          
Note 10 - Convertible Preferred Stock (Details) [Line Items]                                          
Fair Value Adjustment of Warrants           3,000us-gaap_FairValueAdjustmentOfWarrants
/ us-gaap_ClassOfWarrantOrRightAxis
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/ us-gaap_StatementClassOfStockAxis
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/ us-gaap_StatementClassOfStockAxis
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February 2012 Warrants [Member] | Series B Preferred Stock [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
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/ us-gaap_StatementClassOfStockAxis
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/ us-gaap_StatementClassOfStockAxis
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Class of Warrant or Right, Exercise Price of Warrants or Rights             $ 0.05us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= vivmf_February2012WarrantsMember
/ us-gaap_StatementClassOfStockAxis
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/ 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 A Preferred Stock [Member]                                          
Note 10 - Convertible Preferred Stock (Details) [Line Items]                                          
Preferred Stock, Dividend Rate, Per-Dollar-Amount                                       $ 0.0488us-gaap_PreferredStockDividendRatePerDollarAmount
/ us-gaap_StatementClassOfStockAxis
= 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]                                          
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