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Nature of Operations and Basis of Presentation (Details)	9 Months Ended
	Sep. 30, 2016
Midas Gold Shares [Member]
Holding percentage	4.40%

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- 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

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

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- Details

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