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Segments - Schedule of Net Revenue (Details) (USD $) | 3 Months Ended
--- | ---
Mar. 31, 2014 segment | Mar. 31, 2013
Segment Reporting Information [Line Items] |  |
Number of reportable segments | 2 |
Net Revenue | $ 10,121,717 | $ 15,919,779
Percent of Revenue | 100.00% | 100.00%
Partner Network |  |
Segment Reporting Information [Line Items] |  |
Net Revenue | 5,451,617 | 8,916,997
Percent of Revenue | 53.90% | 56.00%
Owned and Operated Network |  |
Segment Reporting Information [Line Items] |  |
Net Revenue | $ 4,670,100 | $ 7,002,782
Percent of Revenue | 46.10% | 44.00%

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- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration

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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
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Namespace Prefix: | us-gaap_
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Period Type: | duration

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- Definition Custom Element. + References No definition available. + Details
Name: | vtro_PercentOfRevenue
Namespace Prefix: | vtro_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration