Note 3 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value (USD $)	Sep. 30, 2014	Dec. 31, 2013	Dec. 31, 2012
Note 3 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value [Line Items]
Total assets	$ 190us-gaap_AssetsFairValueDisclosure	$ 324us-gaap_AssetsFairValueDisclosure	$ 503us-gaap_AssetsFairValueDisclosure
Preferred stock warrant liabilities		623,672vivmf_PreferredStockWarrantLiabilities	685,213vivmf_PreferredStockWarrantLiabilities
Total liabilities		623,672us-gaap_LiabilitiesFairValueDisclosure	685,213us-gaap_LiabilitiesFairValueDisclosure
Fair Value, Inputs, Level 1 [Member] \| Money Market Funds [Member]
Note 3 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value [Line Items]
Money market fund	190	324	503
Fair Value, Inputs, Level 1 [Member]
Note 3 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value [Line Items]
Total assets	190	324	503
Fair Value, Inputs, Level 3 [Member]
Note 3 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value [Line Items]
Preferred stock warrant liabilities		623,672	685,213
Total liabilities		623,672	685,213
Money Market Funds [Member]
Note 3 - Fair Value Measurements (Details) - Assets and Liabilities Measured at Fair Value [Line Items]
Money market fund	$ 190	$ 324	$ 503

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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- Definition

Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Cash

-URI http://asc.fasb.org/extlink&oid=6506951

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Cash Equivalents

-URI http://asc.fasb.org/extlink&oid=6507016

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- Definition

Fair value of financial and nonfinancial obligations.

+ References

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- Definition

Represents the fair value of preferred stock warrant liabilities as of the balance sheet date.

+ References

No definition available.

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