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v3.23.1

Summary of Business and Significant Accounting Policies (Manufacturing Operations and Shipping Fees) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Jan. 31, 2023 | Jan. 31, 2022
Accounting Policies [Abstract] |  |
Shipping and classroom delivery costs | $ 23,800 | $ 18,800

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Shipping and Classroom Delivery Costs + References No definition available. + Details
Name: | virc_ShippingandClassroomDeliveryCosts
Namespace Prefix: | virc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration