XML 75 R61.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Retirement Savings Plan (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items] |  |  |
Matching contributions | $ 2.4 | $ 2.1 | $ 2.8
First 3.0% [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Company matching contribution percentage | 100.00% |  |
Percentage of employee's gross pay matched | 3.00% |  |
Next 2.0% [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Company matching contribution percentage | 50.00% |  |
Percentage of employee's gross pay matched | 2.00% |  |

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

X
- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage employer matches of the employee's percentage contribution matched. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | vrts_DefinedContributionPlanContributionRangeAxis=vrts_ContributionRange1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | vrts_DefinedContributionPlanContributionRangeAxis=vrts_ContributionRange2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |