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Mineral Properties (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	135 Months Ended
	Mar. 31, 2012	Mar. 31, 2013
Mineral Properties [Abstract]
Gain on disposal of mineral property, net	$ 934	$ 79,766

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- Details

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- Definition

The gains (losses) included in results of operations resulting from the sale or disposal of mineral property, net of transaction costs, which do not qualify for treatment as discontinued operations. This item does not include any gain (loss) recognized on the sale of oil and gas property or timber property.

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No definition available.

+ Details

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