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Summary of Business and Significant Accounting Policies (Self-Insurance) (Details) (USD $) | Jan. 31, 2015 | Jan. 31, 2014
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Loss Contingencies [Line Items] |  |
Discount rate | 0.50%virc_AssumedDiscountRateSelfInsuranceAccrual | 0.50%virc_AssumedDiscountRateSelfInsuranceAccrual
Product and General Liability [Member] |  |
Loss Contingencies [Line Items] |  |
Self insurance reserve | 250,000 virc_SelfInsuranceCoverageAmount / us-gaap_LossContingenciesByNatureOfContingencyAxis = virc_ProductAndGeneralLiabilityMember | 250,000 virc_SelfInsuranceCoverageAmount / us-gaap_LossContingenciesByNatureOfContingencyAxis = virc_ProductAndGeneralLiabilityMember
Workers Compensation [Member] |  |
Loss Contingencies [Line Items] |  |
Self insurance reserve | 250,000 virc_SelfInsuranceCoverageAmount / us-gaap_LossContingenciesByNatureOfContingencyAxis = virc_WorkersCompensationMember | 250,000 virc_SelfInsuranceCoverageAmount / us-gaap_LossContingenciesByNatureOfContingencyAxis = virc_WorkersCompensationMember
Automobile Losses [Member] |  |
Loss Contingencies [Line Items] |  |
Self insurance reserve | 50,000 virc_SelfInsuranceCoverageAmount / us-gaap_LossContingenciesByNatureOfContingencyAxis = virc_AutomobileLossesMember | 50,000 virc_SelfInsuranceCoverageAmount / us-gaap_LossContingenciesByNatureOfContingencyAxis = virc_AutomobileLossesMember

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- Details
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- Definition Assumed Discount Rate, Self Insurance Accrual + References No definition available. + Details
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- Details
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