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Commitments and Contingencies (Detail) - Virtus Investment Partners, Inc. Securities Litigation | Jul. 01, 2016 defendant | Apr. 21, 2015 plaintiff
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Loss Contingencies [Line Items] |  |
Number of plaintiffs | plaintiff |  | 3
Number of defendants dismissed | defendant | 1 |

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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. + Details
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Balance Type: | na
Period Type: | duration

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- Definition Number of plaintiffs that have filed claims pertaining to a loss contingency. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
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- Definition Loss Contingency, Number of Defendants Dismissed + References No definition available. + Details
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Namespace Prefix: | vrts_
Data Type: | xbrli:integerItemType
Balance Type: | na
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- Details
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Namespace Prefix: |
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Balance Type: |
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