XML 35 R23.htm IDEA: XBRL DOCUMENT v3.5.0.2

Nature of Operations and Basis of Presentation (Details)	4 Months Ended
	Jun. 30, 2016
Midas Gold Shares [Member]
Holding percentage	4.40%

X

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the cost method of accounting.

+ References

No definition available.

+ Details

Name:	vgz_CostMethodInvestmentOwnershipPercentage
Namespace Prefix:	vgz_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=vgz_MidasGoldSharesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: