XML 33 R21.htm IDEA: XBRL DOCUMENT v3.10.0.1

Nature of Operations and Basis of Presentation (Details) - USD ($)	6 Months Ended
	Jun. 30, 2018	Jan. 31, 2018
Midas Gold Shares [Member]
Property, Plant and Equipment [Line Items]
Ownership investment (as a percent)	4.20%
Mt Todd, Australia [Member]
Property, Plant and Equipment [Line Items]
Percentage of ownership in project	100.00%
Gold price (USD per ounce)		$ 1,300

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571

+ Details

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Balance Type:	na
Period Type:	instant

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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X

- Definition

Represents the gold price per ounce.

+ References

No definition available.

+ Details

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Namespace Prefix:	vgz_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Represents the percentage of ownership by the entity in the project.

+ References

No definition available.

+ Details

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X

- Details

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X

- Details

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