Mineral Properties - Mt. Todd, Northern Territory, Australia (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
Mar. 31, 2006	Mar. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Mineral Properties, Net		$ 2,650	$ 2,146
Capitalization of mine development costs		504
Mt Todd, Australia
Property, Plant and Equipment [Line Items]
Mineral Properties, Net		$ 2,650	$ 2,146
Acquisition Costs, Period Cost	$ 2,146

The capitalized costs incurred during the period (excluded from amortization) to purchase, lease or otherwise acquire an unproved property, including costs of lease bonuses and options to purchase or lease properties, the portion of costs applicable to minerals when land including mineral rights is purchased in fee, brokers' fees, recording fees, legal costs, and other costs incurred in acquiring properties.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 932
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-10(c)(7)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479664/932-10-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 932
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-10(c)(3)(ii)(A))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479664/932-10-S99-1

Name:	us-gaap_AcquisitionCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration