XML 13 R39.htm IDEA: XBRL DOCUMENT v3.2.0.727

Research and Development Grant (Details) - Jun. 30, 2015 AUD in Thousands, $ in Thousands	AUD	USD ($)	USD ($)	USD ($)
Research and Development Grant
R&D tax incentive refund	AUD 7,562	$ 5,863	$ 5,863	$ 5,863

X

- References

No definition available.

+ Details

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

X

- Definition

A tax incentive credit or grant from a government or taxing authority for research and development activity.

+ References

No definition available.

+ Details

Name:	vgz_TaxIncentiveCreditsResearchAndDevelopment
Namespace Prefix:	vgz_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration