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Subsequent Events (Details) - USD ($) $ in Thousands		12 Months Ended
	Jan. 28, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Subsequent Event [Line Items]
Gain on disposal of mineral property interests, net (Note 4)			$ 2,100	$ 6,108
Deferred option gain (Note 4)			383	$ 68
Awak Mas
Subsequent Event [Line Items]
Deferred option gain (Note 4)			$ 383
Awak Mas | Forecast
Subsequent Event [Line Items]
Gain on disposal of mineral property interests, net (Note 4)		$ 2,500
Subsequent Event [Member] | Awak Mas
Subsequent Event [Line Items]
NSR Cancellation Proceeds	$ 2,500
Subsequent Event [Member] | Awak Mas | First 1,250,000 Ounces Produced
Subsequent Event [Line Items]
NSR Royalty Cancellation, Percentage	1.00%
Subsequent Event [Member] | Awak Mas | Next 1,250,000 Ounces Produced
Subsequent Event [Line Items]
NSR Royalty Cancellation, Percentage	1.25%

X

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

Name:	us-gaap_SubsequentEventLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Current amount of gain on the sale of property that does not qualify for gain recognition as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	vgz_DeferredGainOnSaleOfPropertyCurrent
Namespace Prefix:	vgz_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Gain (Loss) On Disposal Of Mineral Property Interests, Net

+ References

No definition available.

+ Details

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

X

- Definition

Amount of proceeds to be received for cancellation of NSR.

+ References

No definition available.

+ Details

Name:	vgz_NsrCancellationProceeds
Namespace Prefix:	vgz_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Percentage of Net Smelter Return to be cancelled from royalty.

+ References

No definition available.

+ Details

Name:	vgz_NsrRoyaltyCancellationPercentage
Namespace Prefix:	vgz_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

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- Details

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Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementScenarioAxis=vgz_First1250000OuncesProducedMember
Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

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