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Commitments and Contingencies - Additional Information (Detail) | Jul. 01, 2016 claim defendant | Jun. 07, 2015 plaintiff | Apr. 21, 2015 plaintiff
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Virtus Investment Partners, Inc. Securities Litigation [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Number of plaintiffs | plaintiff |  |  | 3
Virtus Investment Partners, Inc. Securities Litigation [Member] | Subsequent Event [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Number of defendants dismissed | defendant | 1 |  |
Mark Youngers v. Virtus Investment Partners, Inc. et al [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Number of plaintiffs | plaintiff |  | 3 |
Mark Youngers v. Virtus Investment Partners, Inc. et al [Member] | Subsequent Event [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Number of defendants dismissed | defendant | 10 |  |
Number of causes of action dismissed | claim | 4 |  |

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- Details
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