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Capital and Reserve Requirement Information - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended |
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Dec. 31, 2014 | Dec. 31, 2013
Brokers and Dealers [Abstract] |  |
Aggregate indebtedness to net capital | 15.0 vrts_RatioOfIndebtednessToNetCapitalOne |
Minimum net capital requirement based on aggregate indebtedness | $ 1.6 us-gaap_MinimumNetCapitalRequired1 | $ 1.9 us-gaap_MinimumNetCapitalRequired1

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- Details
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- Definition Amount of minimum net capital required to be maintained to engage in securities transactions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Rule 15c3 -Number 240 -Section 1 -Paragraph 1 -Subparagraph i -Article 15c3 -Subsection a + Details
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Balance Type: | credit
Period Type: | instant

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- Definition Ratio Of Indebtedness To Net Capital One + References No definition available. + Details
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Balance Type: | na
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