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Retirement Plans Pension plan actuarial gain or loss (Details) | 6 Months Ended
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Jul. 31, 2014
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
Benefit Of Average Compensation Years | 5 years

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

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- Definition Benefit of average compensation years. + References No definition available. + Details
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Namespace Prefix: | virc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration