XML 1104 R74.htm IDEA: XBRL DOCUMENT v2.4.1.9
Note 10 - Stock Option Plan (Details) - Valuation Assumptions for Nonemployee Stock Options
9 Months Ended 12 Months Ended 99 Months Ended
Sep. 30, 2014
Dec. 30, 2013
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2013
Note 10 - Stock Option Plan (Details) - Valuation Assumptions for Nonemployee Stock Options [Line Items]          
Dividend yield 0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate 0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate      
Nonemployee Stock Option [Member] | Minimum [Member]          
Note 10 - Stock Option Plan (Details) - Valuation Assumptions for Nonemployee Stock Options [Line Items]          
Contractual term (in years)     3 years 4 years 3 years
Expected volatility         60.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_AwardTypeAxis
= vivmf_NonemployeeStockOptionMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
Risk-free interest rate     0.78%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_AwardTypeAxis
= vivmf_NonemployeeStockOptionMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
0.72%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_AwardTypeAxis
= vivmf_NonemployeeStockOptionMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
0.56%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_AwardTypeAxis
= vivmf_NonemployeeStockOptionMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
Nonemployee Stock Option [Member] | Maximum [Member]          
Note 10 - Stock Option Plan (Details) - Valuation Assumptions for Nonemployee Stock Options [Line Items]          
Contractual term (in years)     10 years 10 years 10 years
Expected volatility         79.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_AwardTypeAxis
= vivmf_NonemployeeStockOptionMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
Risk-free interest rate     3.04%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_AwardTypeAxis
= vivmf_NonemployeeStockOptionMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
1.78%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_AwardTypeAxis
= vivmf_NonemployeeStockOptionMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
4.70%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_AwardTypeAxis
= vivmf_NonemployeeStockOptionMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
Nonemployee Stock Option [Member]          
Note 10 - Stock Option Plan (Details) - Valuation Assumptions for Nonemployee Stock Options [Line Items]          
Expected volatility     67.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_AwardTypeAxis
= vivmf_NonemployeeStockOptionMember
68.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_AwardTypeAxis
= vivmf_NonemployeeStockOptionMember
 
Dividend yield     0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
/ us-gaap_AwardTypeAxis
= vivmf_NonemployeeStockOptionMember
0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
/ us-gaap_AwardTypeAxis
= vivmf_NonemployeeStockOptionMember
0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
/ us-gaap_AwardTypeAxis
= vivmf_NonemployeeStockOptionMember