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v3.20.4

New Accounting Pronouncements (Details) $ in Thousands | 9 Months Ended
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Oct. 31, 2020 USD ($)
COVID-19 [Member] |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |
Reduction In Variable Lease Expense | $ 136

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration

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- Definition Reduction In Variable Lease Expense + References No definition available. + Details
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Namespace Prefix: | virc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |