XML 14 R48.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Commitments and Contingencies - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 0 Months Ended
--- | --- | ---
Mar. 31, 2015 | Mar. 31, 2014 | Apr. 21, 2015 Plaintiff | May 08, 2015 Complaints
Loss Contingencies [Line Items] |  |  |  |
Increase in accrued liabilities | $ (35,020)us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities | $ (31,052)us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities |  |
Subsequent Event [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of plaintiffs |  |  | 3 us-gaap_LossContingencyNumberOfPlaintiffs / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |
Central District of California [Member] | Subsequent Event [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of putative class action complaints filed |  |  |  | 1 vrts_LegalMattersNumberOfPutativeClassActionLawsuits / us-gaap_StatementGeographicalAxis = vrts_CentralDistrictOfCaliforniaMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
Other Operating Expenses [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Increase in accrued liabilities | $ 5,200 us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities / us-gaap_IncomeStatementLocationAxis = us-gaap_OtherOperatingIncomeExpenseMember |  |  |

X
- Definition The increase (decrease) during the reporting period in the amounts payable to vendors for goods and services received and the amount of obligations and expenses incurred but not paid. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
Name: | us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Definition Number of plaintiffs that have filed claims pertaining to a loss contingency. + References No definition available. + Details
Name: | us-gaap_LossContingencyNumberOfPlaintiffs
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Legal Matters Number Of Putative Class Action Lawsuits + References No definition available. + Details
Name: | vrts_LegalMattersNumberOfPutativeClassActionLawsuits
Namespace Prefix: | vrts_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_OtherOperatingIncomeExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementGeographicalAxis=vrts_CentralDistrictOfCaliforniaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |