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Warranty Accrual (Details Textual) | 6 Months Ended
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Jul. 31, 2013
Warranty (Textual) [Abstract] |
Product Warranty | 10 years

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- Definition Product warranty. + References No definition available. + Details
Name: | virc_ProductWarranty
Namespace Prefix: | virc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | virc_WarrantyTextualAbstract
Namespace Prefix: | virc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration