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v3.20.1

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, 2020 | Jan. 31, 2019
Accounting Policies [Abstract] |  |
Shipping and classroom delivery costs | $ 20,552 | $ 22,150

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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- Definition Shipping and Classroom Delivery Costs + References No definition available. + Details
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Namespace Prefix: | virc_
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Balance Type: | debit
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