Represents the amount of the initial estimate for the Demonstration Plant.

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Represents the amount of potential funding to be received.

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The period of operations to process and separate rare earth elements from the stockpiled sample in demonstration plant project.

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Represents the number of gold targets within the area

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The cash outflow for payment of costs associated with demonstration plant project.

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Represents the percentage of the total estimated cost for the project covered by outside funding.

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The authorized gross proceeds under the rights offering.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Carrying amount as of the balance sheet date of amounts due under the terms of governmental, corporate, or foundation grants.

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Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

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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.

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Percentage of subsidiary's or equity method investee's stock owned by parent immediately after all stock transactions.

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NATURE OF OPERATIONS (Details) $ in Thousands	3 Months Ended
NATURE OF OPERATIONS (Details) $ in Thousands	Mar. 31, 2023 USD ($) item	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Oct. 01, 2021 USD ($)
Nature of Operations
Amount of potential DoE funding					$ 21,900
Percentage of total estimated cost for the project covered by DoE funding	50.00%				50.00%
Rights offering authorized amount				$ 25,400
Amount of initial estimate for the Demonstration Plant					$ 43,800
Cash and cash equivalents	$ 13,992		$ 15,523
Cash used in operations	1,543	$ 3,481
Payments for demonstration plant project costs	$ 1,000
Wyoming Energy Authority
Nature of Operations
Grants Receivable					$ 4,400
Minimum
Nature of Operations
Additional period for operation processes from samples	8 months
Maximum
Nature of Operations
Additional period for operation processes from samples	10 months
Sundance Gold Project
Nature of Operations
Ownership interest (as a percent)	100.00%
Number of gold targets \| item	3
Bear Lodge REE Project
Nature of Operations
Ownership interest (as a percent)	100.00%