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Plant And Equipment (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013
Property, Plant and Equipment [Line Items] |  |
Net | $ 2,842 us-gaap_PropertyPlantAndEquipmentNet | $ 3,698 us-gaap_PropertyPlantAndEquipmentNet
Commissions And Other Costs To Sell Mill Equipment | 800 vgz_CommissionsAndOtherCostsToSellMillEquipment |
Property, Plant, and Equipment, Salvage Value | 7,300 us-gaap_PropertyPlantAndEquipmentSalvageValue |
Los Cardones, Mexico [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Cost | 17 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_StatementGeographicalAxis = vgz_ConcordiaMexicoMember | 17 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_StatementGeographicalAxis = vgz_ConcordiaMexicoMember
Accumulated depreciation and write downs | 8 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / us-gaap_StatementGeographicalAxis = vgz_ConcordiaMexicoMember | 5 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / us-gaap_StatementGeographicalAxis = vgz_ConcordiaMexicoMember
Net | 9 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = vgz_ConcordiaMexicoMember | 12 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = vgz_ConcordiaMexicoMember
Mt. Todd, Australia [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Cost | 5,483 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_StatementGeographicalAxis = vgz_MtToddAustraliaMember | 5,476 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_StatementGeographicalAxis = vgz_MtToddAustraliaMember
Accumulated depreciation and write downs | 2,756 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / us-gaap_StatementGeographicalAxis = vgz_MtToddAustraliaMember | 1,993 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / us-gaap_StatementGeographicalAxis = vgz_MtToddAustraliaMember
Net | 2,727 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = vgz_MtToddAustraliaMember | 3,483 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = vgz_MtToddAustraliaMember
Guadalupe de los Reyes, Mexico [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Cost | 403 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_StatementGeographicalAxis = vgz_GuadalupeDeLosReyesMexicoMember | 780 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_StatementGeographicalAxis = vgz_GuadalupeDeLosReyesMexicoMember
Accumulated depreciation and write downs | 297 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / us-gaap_StatementGeographicalAxis = vgz_GuadalupeDeLosReyesMexicoMember | 577 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / us-gaap_StatementGeographicalAxis = vgz_GuadalupeDeLosReyesMexicoMember
Net | 106 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = vgz_GuadalupeDeLosReyesMexicoMember | 203 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = vgz_GuadalupeDeLosReyesMexicoMember
Corporate, United States [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Cost | 5,903 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_StatementGeographicalAxis = vgz_CorporateUnitedStatesMember | 6,273 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_StatementGeographicalAxis = vgz_CorporateUnitedStatesMember
Accumulated depreciation and write downs | 3,061 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / us-gaap_StatementGeographicalAxis = vgz_CorporateUnitedStatesMember | 2,575 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / us-gaap_StatementGeographicalAxis = vgz_CorporateUnitedStatesMember
Net | $ 2,842 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = vgz_CorporateUnitedStatesMember | $ 3,698 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_StatementGeographicalAxis = vgz_CorporateUnitedStatesMember

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- Definition Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.14) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 14 -Article 5 + Details
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- Definition Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph a -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 7 + Details
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- Definition The estimated or actual value of the asset at the end of its useful life or when it is no longer serviceable (cannot be used for its original purpose). + References No definition available. + Details
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- Definition Commissions And Other Costs To Sell Mill Equipment + References No definition available. + Details
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