The effective interest rate at the end of the reporting period.

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 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

Name:	us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_LineOfCreditFacilityLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The percentage points added to the reference rate or index during the adjustment period to compute the variable [fully indexed] rate on the loans receivable realized during the reporting period. This may be an effective margin for the period depending on the specific terms of the underlying loan agreement (for example, an annual disclosure for a loan with a quarterly adjustment period).

+ References

No definition available.

+ Details

Name:	us-gaap_LoansReceivableBasisSpreadOnVariableRateDuringPeriod
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Provision to reduce borrowings under line of credit facility for period.

+ References

No definition available.

+ Details

Name:	virc_ProvisionToReduceBorrowingsUnderLineOfCreditFacilityForPeriod
Namespace Prefix:	virc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Provision to requires reduce borrowings under line of credit facility.

+ References

No definition available.

+ Details

Name:	virc_ProvisionToRequiresReduceBorrowingsUnderLineOfCreditFacility
Namespace Prefix:	virc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_LineOfCreditFacilityAxis=virc_PNCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TradingActivityByTypeAxis=virc_AlternateBaseRateLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_EurodollarMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Debt (Narrative) (Details) (USD $)	3 Months Ended	9 Months Ended
Debt (Narrative) (Details) (USD $)	Apr. 30, 2015	Oct. 31, 2014	Apr. 15, 2014
Line of Credit Facility [Line Items]
Line of Credit Facility, Interest Rate at Period End	4.00%
Provision to reduce borrowings under the line	$ 6,000,000
Provision to reduce borrowings under the line, period	60 days
PNC [Member] \| Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Remaining borrowing capacity	8,407,000
PNC [Member] \| Revolving Credit Facility [Member] \| Amendment No. 7 To The Credit Agreement [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity			$ 50,000,000
Eurodollar [Member] \| Minimum [Member]
Line of Credit Facility [Line Items]
Revolving credit facility bears interest range of		1.75%
Eurodollar [Member] \| Maximum [Member]
Line of Credit Facility [Line Items]
Revolving credit facility bears interest range of	2.75%
Alternate Base Rate Loans [Member] \| London Interbank Offered Rate LIBOR [Member] \| Minimum [Member]
Line of Credit Facility [Line Items]
Revolving credit facility bears interest range of	0.75%
Alternate Base Rate Loans [Member] \| London Interbank Offered Rate LIBOR [Member] \| Maximum [Member]
Line of Credit Facility [Line Items]
Revolving credit facility bears interest range of	1.75%