XML 36 R32.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Nature of Operations (Details) | 3 Months Ended |
--- | --- | ---
Sep. 30, 2013 | Oct. 18, 2013
Nature Of Operations And Basis Of Presentation [Abstract] |  |
Sale of Stock, Percentage of Ownership after Transaction | 24.90% |
Percentage Ownership Possible Through Earn In | 80.00% | 62.50%

X
- Details
Name: | us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of subsidiary's or equity investee's stock owned by parent company after stock transaction. + References No definition available. + Details
Name: | us-gaap_SaleOfStockPercentageOfOwnershipAfterTransaction
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The percentage ownership in a project that is possible for a third party to achieve through an earn-in agreement. + References No definition available. + Details
Name: | vgz_PercentageOwnershipPossibleThroughEarnIn
Namespace Prefix: | vgz_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant