Note 13 - Subsequent Events (Details Textual) - Subsequent Event [Member]	Jan. 13, 2017 USD ($)	Jan. 01, 2017 USD ($) a $ / ft²
Sublease Agreement for Relocation of Headquarters [Member]
Area of Real Estate Property \| a		12,400
Operating Leases of Lessee, Period Following Delivery of Possession Triggering Commencement		120 days
Lessee Leasing Arrangements, Operating Leases, Term of Contract		3 years
Operating Leases, Monthly Rent Per Rentable Square Foot During First Year \| $ / ft²		20.5
Operating Leases, Monthly Rent Per Rentable Square Foot During Second Year \| $ / ft²		21.12
Operating Leases, Monthly Rent Per Rentable Square Foot During Third Year \| $ / ft²		21.75
Security Deposit \| $		$ 22,000
Operating Leases, Allowance for Certain Improvements \| $		$ 88,000
First Amendment to the 2016 Loan Agreement [Member] \| Western Alliance Bank [Member]
Debt Instrument, Covenant, Unrestricted Cash in Accounts to Indebtedness Ratio	1.25
First Amendment to the 2016 Loan Agreement [Member] \| Western Alliance Bank [Member] \| Minimum [Member]
Debt Instrument, Covenant, Minimum Unrestricted Cash in Accounts \| $	$ 2,000,000

Area of a real estate property.

No definition available.

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- Definition

Term of the lessee's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Balance Type:	na
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- Definition

The amount of an asset, typically cash, provided to a counterparty to provide certain assurance of performance by the entity pursuant to the terms of a written or oral agreement, such as a lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.8,17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the minimum unrestricted cash in accounts that company needs to maintain according to the debt covenant between the company and lender.

+ References

No definition available.

+ Details

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- Definition

Represents information pertaining to the minimum requirement for unrestricted cash in accounts to indebtedness ratio according to the debt covenant between the company and the lender.

+ References

No definition available.

+ Details

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Namespace Prefix:	vivmf_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents information about allowance amount for certain tenant improvements related to engineering, design and construction of Sublease Premises.

+ References

No definition available.

+ Details

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Namespace Prefix:	vivmf_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the monthly base rent per rentable square foot of the Sublease Premises during the first year.

+ References

No definition available.

+ Details

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Namespace Prefix:	vivmf_
Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the monthly base rent per rentable square foot of the Sublease Premises during the second year.

+ References

No definition available.

+ Details

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Namespace Prefix:	vivmf_
Data Type:	us-types:perUnitItemType
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- Definition

Represents the monthly base rent per rentable square foot of the Sublease Premises during the third year.

+ References

No definition available.

+ Details

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Balance Type:	na
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- Definition

Represents information about the period after delivery of possession of Sublease Premises to the company triggering commencement.

+ References

No definition available.

+ Details

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Namespace Prefix:	vivmf_
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- Details

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- Details

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- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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- Details

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