Retirement Plans (Periodic Pension Cost) (Details) - USD ($) $ in Thousands	12 Months Ended
Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2023
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income
Amortization of gain	$ 142	$ (371)
Total recognized in other Comprehensive Income	(1,732)	(1,050)
Combined Employee Retirement Plans [Member]
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income
Net gain	(2,458)	(1,044)
Prior service cost	0	0
Amortization of gain	142	4
Recognized loss due to settlement	0	(375)
Amortization of initial asset	0	0
Total recognized in other Comprehensive Income	(2,316)	(1,415)
Items to be Recognized as a Component of Periodic Pension Cost for next fiscal year
Prior service cost	0	0
Net actuarial gain	(363)	(141)
Net periodic pension cost	(363)	(141)
Projected benefit obligation	26,824	27,385	$ 32,985
Accumulated benefit obligation	26,824	27,385
Fair value of plan assets	21,039	19,111	$ 23,628
Components of Net Cost
Service cost	0	0
Interest cost	1,251	1,410
Expected return on plan assets	(675)	(789)
Amortization of transition amount	0	0
Recognized loss due to settlement	0	375
Amortization of prior service cost	0	0
Recognized net actuarial (gain) loss	(125)	12
Benefit cost	451	$ 1,008
Estimated Future Benefit Payments
FYE 01-31-2026	6,649
FYE 01-31-2027	2,580
FYE 01-31-2028	2,339
FYE 01-31-2029	1,988
FYE 01-31-2030	1,876
FYE 01-31-2031 to 2035	8,318
Total	$ 23,750
Weighted Average Assumptions to Determine Net Periodic Pension Cost
Discount rate		4.85%
Expected return on plan assets	6.00%	6.00%
Minimum \| Combined Employee Retirement Plans [Member]
Weighted Average Assumptions to Determine Benefit Obligations at Year-End
Discount rate	5.55%	5.15%
Weighted Average Assumptions to Determine Net Periodic Pension Cost
Discount rate	5.15%
Maximum \| Combined Employee Retirement Plans [Member]
Weighted Average Assumptions to Determine Benefit Obligations at Year-End
Discount rate	5.60%	5.20%
Weighted Average Assumptions to Determine Net Periodic Pension Cost
Discount rate	5.20%

Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Defined Benefit Plan, Total Estimated Future Benefit Payments

+ References

No definition available.

+ Details

Name:	virc_DefinedBenefitPlanTotalEstimatedFutureBenefitPayments
Namespace Prefix:	virc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Net Periodic Pension Cost

+ References

No definition available.

+ Details

Name:	virc_NetPeriodicPensionCost
Namespace Prefix:	virc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_RetirementPlanTypeAxis=us-gaap_PensionPlansDefinedBenefitMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: