XML 59 R48.htm IDEA: XBRL DOCUMENT v3.20.4

COVID-19 (Details)	Dec. 14, 2020
Unusual or Infrequent Items, or Both [Abstract]
Current staffing level at Torrance facility (percent)	50.00%

X

- References

No definition available.

+ Details

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

X

- Definition

Current Staffing Level at Facility, Percent

+ References

No definition available.

+ Details

Name:	virc_CurrentStaffingLevelatFacilityPercent
Namespace Prefix:	virc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration