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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $) | 0 Months Ended | 12 Months Ended
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Oct. 02, 2012 | Dec. 31, 2013 Segment | Dec. 31, 2012 | Dec. 31, 2011
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Number of operating segment |  | 1 |  |
Estimated useful lives of intangibles | 5 years |  |  |
Aggregate assets under management |  | $ 600,000,000 | $ 700,000,000 | $ 1,000,000,000
Investment management fees |  | 1,700,000 | 2,500,000 | 3,300,000
Management fees net of fees paid |  | $ 96,100,000 | $ 53,700,000 | $ 36,400,000
Minimum [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Deferred sales charges receiving period |  | 1 year |  |
Deferred commissions amortization period |  | 1 year |  |
Estimated useful lives of intangibles |  | 1 year |  |
Minimum [Member] | Furniture and Office Equipment [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Useful lives of fixed assets |  | 3 years |  |
Minimum [Member] | Computer Equipment and Software [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Useful lives of fixed assets |  | 3 years |  |
Maximum [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Deferred sales charges receiving period |  | 5 years |  |
Deferred commissions amortization period |  | 5 years |  |
Estimated useful lives of intangibles |  | 16 years |  |
Maximum [Member] | Furniture and Office Equipment [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Useful lives of fixed assets |  | 10 years |  |
Maximum [Member] | Computer Equipment and Software [Member] |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Useful lives of fixed assets |  | 5 years |  |

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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References No definition available. + Details
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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- Definition Assets Of Investment Trusts + References No definition available. + Details
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Balance Type: | debit
Period Type: | instant

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- Definition Deferred Commission Recovery Period + References No definition available. + Details
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Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Deferred Sales Commissions Amortization Period + References No definition available. + Details
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- Definition Investment Management Fees Paid + References No definition available. + Details
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Namespace Prefix: | vrts_
Data Type: | xbrli:monetaryItemType
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Period Type: | duration

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- Definition Investment Management Fees Revenue + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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- Details
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