Consolidation - Additional Information (Details) - Product	Sep. 30, 2015	Dec. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of consolidated products	15	12
Number of consolidated sponsored investment products	14	12
Number of consolidated investment products	1	0

Number of sponsored investment products consolidated.

No definition available.

Name:	vrts_NumberOfSponsoredInvestmentProductsConsolidated
Namespace Prefix:	vrts_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant