Mineral Properties, Plant and Equipment, Net - Additional Information (Details) - Thacker Pass [Member] - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2025	Dec. 31, 2024
Restricted Stock Units (RSUs) [Member]
Property, Plant and Equipment [Line Items]
Stock-based compensation, capitalized	$ 345	$ 546
Performance Share Units (PSUs) [Member]
Property, Plant and Equipment [Line Items]
Stock-based compensation, capitalized	$ 0	$ 60

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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 7A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-7A

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