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Summary of Business and Significant Accounting Policies (Self-Insurance) (Details) (USD $) | Jan. 31, 2013 | Jan. 31, 2012
--- | --- | ---
Loss Contingencies [Line Items] |  |
Discount rate | 0.50% | 4.50%
Product and General Liability [Member] |  |
Loss Contingencies [Line Items] |  |
Self insurance reserve | 250,000 | 250,000
Workers Compensation [Member] |  |
Loss Contingencies [Line Items] |  |
Self insurance reserve | 250,000 | 250,000
Automobile Losses [Member] |  |
Loss Contingencies [Line Items] |  |
Self insurance reserve | 50,000 | 50,000

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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 Assumed Discount Rate, Self Insurance Accrual + References No definition available. + Details
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Namespace Prefix: | virc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Self Insurance Coverage Amount + References No definition available. + Details
Name: | virc_SelfInsuranceCoverageAmount
Namespace Prefix: | virc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant