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v2.4.0.8

Related Party Transactions (Details) (Director, USD $) | 1 Months Ended | 3 Months Ended
--- | --- | ---
Jan. 31, 2013 | Mar. 31, 2013
Director |  |
Related Party Transaction [Line Items] |  |
Term of operating sublease | 2 years | 2 years
Rent expense per month | $ 8,400 |
Future minimum sublease due | $ 193,200 | $ 193,200

X
- Definition Contractually required future rental payments receivable on noncancelable subleasing arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Operating Leases, Rent Expense Per Month + References No definition available. + Details
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Namespace Prefix: | vtro_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Operating Leases, Term, Sublease + References No definition available. + Details
Name: | vtro_OperatingLeasesTermSublease
Namespace Prefix: | vtro_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration