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Income Taxes (Details)	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Income Taxes (Textual) [Abstract]
Estimated effective annual tax rate	39.30%	(9.00%)

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- Definition

Estimated effective annual tax rate.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

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- Details

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Namespace Prefix:	vrts_
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