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

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- Definition

Assumed Discount Rate, Self Insurance Accrual

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- Definition

Self Insurance Coverage Amount

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