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Commitments And Contingencies (Details) - Mt Todd, Australia		12 Months Ended
	Oct. 31, 2020	Dec. 31, 2020
Loss Contingencies [Line Items]
Percentage of ownership in project		100.00%
Scenario, Plan | Jawoyn Association Aboriginal Corporation
Loss Contingencies [Line Items]
Percentage of ownership in project	10.00%
Percentage of royalty on gold		1.00%
Scenario, Plan | Minimum | Jawoyn Association Aboriginal Corporation
Loss Contingencies [Line Items]
Gross Proceeds Royalty, Additional Contingent Gross Proceeds Royalty, Percent		0.125%
Gross Proceeds Royalty, Including Contingent Additional Gross Proceeds Royalty, Percent		1.125%
Scenario, Plan | Maximum | Jawoyn Association Aboriginal Corporation
Loss Contingencies [Line Items]
Gross Proceeds Royalty, Additional Contingent Gross Proceeds Royalty, Percent		2.00%
Gross Proceeds Royalty, Including Contingent Additional Gross Proceeds Royalty, Percent		3.00%

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Cash payment to affiliate as percentage of value of annual gold production from current mining leases.

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Gross proceeds royalty percent in addition to agreed upon gross proceeds royalty percent.

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Royalty payment to affiliate as percentage of the gross proceeds value of annual gold production from current mining leases, including additional gross proceeds.

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

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