XML 60 R48.htm IDEA: XBRL DOCUMENT
v3.20.2

COVID-19 (Details) | Jun. 12, 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