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v2.4.1.9

Contingencies (Details Textual) (USD $) | 12 Months Ended |
--- | --- | ---
Jan. 31, 2015 | Jan. 31, 2014
Loss Contingencies [Line Items] |  |
Liability retention losses | $ 30,000,000 virc_SelfInsuranceStopLossCoverageAmount |
Expected future losses | 2,130,000 us-gaap_SelfInsuranceReserve | 2,425,000 us-gaap_SelfInsuranceReserve
Estimated payout period | 5 years |
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
Name: | us-gaap_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Carrying amount (including both current and noncurrent portions) of accrued known and estimated losses incurred as of the balance sheet date for which no insurance coverage exists, and for which a claim has been made or is probable of being asserted, typically arising from workmen's compensation-type of incidents and personal injury to nonemployees from accidents on the entity's property. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.24) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_SelfInsuranceReserve
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

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- Definition Self Insurance, Estimated Payout Period + References No definition available. + Details
Name: | virc_SelfInsuranceEstimatedPayoutPeriod
Namespace Prefix: | virc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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

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- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=virc_AutomobileLossesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=virc_ProductAndGeneralLiabilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=virc_WorkersCompensationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |