Agreed upon price for the exchange of the underlying asset.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price.

+ References

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Namespace Prefix:	us-gaap_
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Balance Type:	na
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	duration

- Definition

This element represents the fair value of the warrant at issuance date.

+ References

No definition available.

+ Details

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

- Details

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Namespace Prefix:
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Note 3 - Fair Value Measurements (Details) - Summary of the Valuation Techniques for Fair Value of Preferred Stock Warrant Liabilities - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Preferred stock warrant liabilities	$ 624	$ 686
Preferred Stock Warrant Liabilities [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Preferred stock warrant liabilities	$ 624
Minimum [Member] \| Warrant [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
	$ 0.04
	$ (0.04)
	70.60%
	(70.60%)
Maximum [Member] \| Warrant [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
	$ 0.44
	$ (0.44)
	84.20%
	(84.20%)
Weighted Average [Member] \| Warrant [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
	$ 0.06
	$ (0.06)
	76.00%
	(76.00%)