Document and Entity Information Document Type Document Quarterly Report Document Period End Date Document Transition Report Entity File Number Entity Registrant Name Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Address, Address Line One Entity Address, City or Town Entity Address, State or Province Entity Address, Postal Zip Code City Area Code Local Phone Number Title of 12(b) Security Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Small Business Entity Emerging Growth Company Entity Shell Company Entity Common Stock, Shares Outstanding Entity Central Index Key Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Period Focus Amendment Flag CONDENSED CONSOLIDATED BALANCE SHEETS Schedule of Related Party Transactions, by Related Party [Table] Long-Lived Tangible Asset [Axis] Long-Lived Tangible Asset [Domain] Building [Member] Buildings Geological Equipment Equipment Statement [Line Items] Statement ASSETS. ASSETS: CURRENT ASSETS Cash and cash equivalents Cash and cash equivalents Accounts Receivable, after Allowance for Credit Loss, Current Balance of receivables due from General Atomics at end of year Balance of receivables due from General Atomics at beginning of year Due from related party (Note 4) Accounts Receivable, after Allowance for Credit Loss, Current, Related Party [Extensible Enumeration] Prepaid Expense and Other Assets, Current Prepaid expenses and other Assets, Current Total Current Assets Equipment, net (Note 7) Building and equipment, net Restricted Cash, Noncurrent Restricted cash, long-term Restricted cash Operating Lease, Right-of-Use Asset Right of use asset (Note 6) Amount before accumulated depletion of real estate held for productive use, excluding land held for sale. Investment In Land Land Assets Total Assets LIABILITIES. LIABILITIES: CURRENT LIABILITIES Accounts payable and accrued liabilities Accounts payable and accrued liabilities Operating Lease, Liability, Current Lease liability, current (Note 6) Current Liabilities Liabilities, Current Total Current Liabilities Reclamation obligation Reclamation obligation Estimated cost Operating Lease, Liability, Noncurrent Lease liability, long-term (Note 6) Non-Current Liabilities Other Long-Term Debt, Noncurrent Other long-term liabilities Liabilities Total Liabilities Commitments And Contingencies. Commitments and Contingencies (Note 8) SHAREHOLDERS' EQUITY: SHAREHOLDERS' EQUITY: Common Stock Value Common shares, no par value - unlimited shares authorized; shares outstanding at March 31, 2026 and December 31, 2025 of 645,368,390 and 516,134,712, respectively Additional paid in capital. Additional paid-in capital Accumulated deficit. Accumulated deficit Stockholders' Equity Attributable to Parent Ending balance Beginning balance Total Shareholders' Equity Liabilities and Equity Total Liabilities and Shareholders' Equity Common shares, par value Common shares, par value Common shares, authorized Common shares, authorized Common shares, outstanding Common shares, outstanding Common Stock, Shares, Issued CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS Operating income (expense): Operating expenses: Exploration Expense Exploration and evaluation (See Note 4 for related party costs) General and Administrative Expense Corporate administration Depreciation, Depletion and Amortization, Nonproduction Depreciation and amortization Operating Expenses Total operating expenses Non-operating income: Non-operating income (expense): Interest Income, Other Interest income Interest Expense Interest expense Nonoperating Income (Expense) Total non-operating income Net loss Net loss Earnings Per Share, Basic Loss per share - basic (in dollars per share) Earnings Per Share, Diluted Loss per share - diluted (in dollars per share) Weighted Average Number of Shares Outstanding, Basic Weighted average number of shares outstanding (See Note 7) - basic (in shares) Weighted average number of shares outstanding - basic (in shares) Weighted Average Number of Shares Outstanding, Diluted Weighted average number of shares outstanding (See Note 7) - diluted (in shares) Weighted average number of shares outstanding - diluted (in shares) CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS CASH FLOWS FROM OPERATING ACTIVITIES: Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net loss Adjustments to reconcile net loss to net cash used in operating activities: Depreciation Depreciation expense Operating Lease, Right-of-Use Asset, Amortization Expense Right of use asset amortization Stock-based compensation Stock-based compensation Compensation expense for stock option awards Other Noncash Income (Expense) Other The aggregate amount of adjustments to net income or loss necessary to remove the effects of all items whose cash effects are investing or financing cash flows. The aggregate amount also includes all noncash expenses and income items which reduce or increase net income and are thus added back or deducted when calculating cash provided by or used in operating activities. Adjustments To Reconcile Net Income Loss To Cash Used In Provided By Operating Activities Total adjustments to reconcile net loss to net cash used in operating activities Changes in working capital: Increase (Decrease) in Due from Related Parties Due to (from) related party Increase (Decrease) in Prepaid Expenses, Other Prepaid expenses and other Increase (Decrease) in Accounts Payable and Accrued Liabilities Accounts payable and accrued liabilities Increase (Decrease) in Operating Lease Liability Lease liability Net cash used in operating activities Cash used in operations Net cash used in operating activities CASH FLOWS FROM INVESTING ACTIVITIES: Payments to Acquire Machinery and Equipment Purchase of equipment Net Cash Provided by (Used in) Investing Activities Net cash used in investing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] CASH FLOWS FROM FINANCING ACTIVITIES: Proceeds from Issuance of Common Stock Financing transaction, net Gross proceeds Proceeds from Stock Options Exercised Stock option exercise Net Cash Provided by (Used in) Financing Activities Net cash provided by financing activities Cash and Cash Equivalents, Period Increase (Decrease) Net change in cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash, cash equivalents and restricted cash- end of the period Cash, cash equivalents and restricted cash- beginning of the period Total of cash, cash equivalents and restricted cash - end of period Cash and Cash Equivalents [Abstract] Reconciliation of amounts in the Balance Sheet to amounts in the Cash Flow Statement CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY Statement [Table] Equity Components [Axis] Equity Component [Domain] Common Stock Additional Paid in Capital Accumulated Deficit Sale of Stock [Axis] Sale of Stock [Domain] Represents the information pertaining to 2026 Rights Offering. Rights Offering, 2026 [Member] 2026 Rights Offering Shares, Outstanding Ending balance, shares Beginning balance, shares Financing transaction, shares 2026 Rights Offering, shares Common shares issued Financing transaction, amount 2026 Rights Offering, amount Stock option exercise, shares Exercised Exercised Stock option exercise, shares Stock option exercise, amount Stock option exercise, amount Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture Stock-based compensation, amount NATURE OF OPERATIONS Nature of Operations [Text Block] NATURE OF OPERATIONS BASIS OF ACCOUNTING AND PRESENTATION Business Description and Basis of Presentation [Text Block] BASIS OF ACCOUNTING AND PRESENTATION FAIR VALUE OF FINANCIAL INSTRUMENTS Fair Value Disclosures [Text Block] FAIR VALUE OF FINANCIAL INSTRUMENTS RELATED PARTY Related Party Transactions Disclosure [Text Block] RELATED PARTY WYOMING ENERGY AUTHORITY GRANT The entire disclosure for wyoming energy authority grant. WYOMING ENERGY AUTHORITY GRANT [Text Block] WYOMING ENERGY AUTHORITY GRANT LEASES Lessee, Operating Leases [Text Block] LEASES SHAREHOLDERS' EQUITY Shareholders' Equity and Share-based Payments [Text Block] SHAREHOLDERS' EQUITY COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] COMMITMENTS AND CONTINGENCIES GEOGRAPHIC AND SEGMENT INFORMATION Segment Reporting Disclosure [Text Block] GEOGRAPHIC AND SEGMENT INFORMATION SUBSEQUENT EVENTS Subsequent Events [Text Block] SUBSEQUENT EVENTS Loss per Share Loss per Share Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] Schedule of fair value of financial assets and liabilities on a recurring basis Tabular disclosure of related party receivables. Schedule of Related Party Receivables [Table Text Block] Schedule of related party receivables Lessee, Operating Lease, Liability, Maturity [Table Text Block] Schedule of total future minimum lease payments Stock option activity Schedule of stock option activity Non-vested stock option activity Schedule of intrinsic value and weighted average remaining life for stock options Schedule of Research and Development Arrangement, Contract to Perform for Others [Table] Project [Axis] Project [Domain] Represents information related to the Bear Lodge REE Project. Bear Lodge REE Project Bear Lodge REE Project Represent information related to the Sundance Gold Project Sundance Gold Project Sundance Gold Project Counterparty Name [Axis] Counterparty Name [Domain] Represents the information pertaining to General Atomics. General Atomics General Atomics Represents the information pertaining to 2021 Rights Offering. Rights Offering, 2021 [Member] 2021 Rights Offering Represents the information pertaining to 2024 Rights Offering. Rights Offering, 2024 [Member] 2024 Rights Offering Research and Development Arrangement, Contract to Perform for Others [Line Items] NATURE OF OPERATIONS Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions Ownership interest (as a percent) The amount of total estimated budget of Demonstration Plant project. Demonstration Plant Project Total Estimated Budget Projected operating cost The amount of updated budget of Demonstration Plant project. Demonstration Plant Project, Updated Budget Demonstration plant project budget The amount of expected net proceeds from the rights offering. Expected Net Proceeds From The Rights Offering Net proceeds of rights offering Represents the number of gold targets within the area Number Of Gold Targets Number of gold targets Amount of expected monthly on-going costs of the Demonstration Plant during the 2026. Demonstration Plant Project, Expected Monthly On Going Cost Expected monthly on-going cost of the Demonstration Plant during 2026 Antidilutive Security, Excluded EPS Calculation [Table] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] The consideration for subscription right issued under the rights offering. Rights Offering, Subscription Right Issuance Consideration Subscription right issued per share Potentially dilutive securities Fair Value, Recurring and Nonrecurring [Table] Measurement Frequency [Axis] Measurement Frequency [Domain] Recurring Recurring Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Level 1 Level 1 Financial Instrument [Axis] Financial Instruments [Domain] Money Market Funds [Member] Money market funds US Treasury Securities [Member] U.S. Treasury bills Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value Assets, Fair Value Disclosure [Abstract] Assets Assets, Fair Value Disclosure Assets fair value Related Party Transaction [Line Items] RELATED PARTY Represents the amount of potential funding to be received. Amount Of Potential Funding For Project Amount of potential DoE funding Represents the percentage of the total estimated cost for the project covered by outside funding. Percentage Of Total Estimated Cost For Project Covered By Funding Percentage of total estimated cost for the project covered by DoE funding Amount of total allowable costs for planned demonstration funded on cost share basis. Total Allowable Costs For Planned Demonstration Funded On Cost Share Basis Allowable costs for planned demonstration funded on cost share basis Percentage of total cost of the demonstration plant funded by the grant. Percentage Of Expected Total Cost Of Demonstration Plant Funded By The Grant Percentage of total cost of the demonstration plant funded by DoE Percentage of total cost of the demonstration plant funded by the non federal entity. Percentage Of Expected Total Cost Of Demonstration Plant Funded By The Non Federal Entity Percentage of total cost of the demonstration plant funded by non federal entity Other Commitment Commitment amount The percentage of expected total cost of demonstration plant funded under cost share funding agreement. Percent of Expected Total Cost of Demonstration Plant Funded Under Cost Share Funding Agreement Subcontracted services The percentage of increase in the budget of the Demonstration Plant project compared to the original budget submitted to the Department of Energy. Demonstration Plant Project, Budget Increase, Percentage Demonstration plant project budget increase percentage The amount of original budget of Demonstration Plant project submitted to the Department of Energy. Demonstration Plant Project, Original Budget Demonstration plant project original budget The amount of additional cost-share funding commitment. Additional Cost Share Funding Commitment Additional cost-share funding The maximum additional cash advances, while the parties progressed an amended project funding agreement covering the Company's share of the additional non-federal project funding needed for the project's completion. Maximum Additional Cash Advances for Project Funding Agreement for Project Completion Maximum additional cash advances for project funding agreement for project completion The cash outflow associated with advance payments during the period, under the project funding agreement. Payments for Advance Payments under Project Funding Payments for advance payments under project funding The amount of funds returned pursuant to related party transaction during period. Related Party Transaction, Funds Returned Funds returned by General Atomics during the year The cash outflow for payment of costs associated with demonstration plant project. Payments for Demonstration Plant Project Costs Payments for demonstration plant project costs Amount of expense of demonstration plant. Demonstration Plant Project, Amount Expensed Expenses of Demonstration The amount of reimbursable costs incurred by the Company under related party transaction. Reimbursable Costs, Related Party Reimbursable costs invoiced by the Company during the period Presentation of information about wyoming energy authority grant. Wyoming Energy Authority Grant [Table] Legal Entity [Axis] Entity [Domain] Represents the information pertaining to Wyoming Energy Authority. Wyoming Energy Authority [Member] Wyoming Energy Authority Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Represents the information pertaining to funding agreement. Funding Agreement [Member] Funding Agreement 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. Wyoming Energy Authority Grant [Line Items] WYOMING ENERGY AUTHORITY GRANT Grants Receivable Grants receivable Number of milestones during development process under the funding agreement. Funding Agreement, Number Of Milestone During The Development Process Number of milestones during development process Percentage of actual expenses from the invoices that are conditional as a part of grant from Wyoming Energy Authority. Funding Agreement, Percentage Of Actual Expenses Conditional For Grant Percentage of actual expenses The amount of grants invoiced. Grant Amount Invoiced Grant amounts invoiced The cash inflow from grants. Proceeds From Grants Proceeds from grant Amount of grant income not yet recognized. Grant Income, Not Yet Recognized, Amount Grant income Property, Plant and Equipment [Table] Land and Building [Member] Property Lease Scenario [Axis] Scenario [Domain] Forecast Property, Plant and Equipment [Line Items] LEASES Lessee, Operating Lease, Term of Contract Term of contract Lessee, Operating Lease, Existence of Option to Extend [true false] Option to extend Lessee, Operating Lease, Renewal Term Renewal extension term (in years) Operating Lease, Payments Operating lease payments Operating Lease, Expense Operating Lease Operating Lease, Weighted Average Remaining Lease Term Weighted average lease term Operating Lease, Weighted Average Discount Rate, Percent Weighted average discount rate Lessee, Operating Lease, Liability, Payment, Due [Abstract] Lease payments Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year 2026 Lessee, Operating Lease, Liability, to be Paid, Year One 2027 Lessee, Operating Lease, Liability, to be Paid Total lease payments Lessee, Operating Lease, Liability, Undiscounted Excess Amount Less interest Operating Lease, Liability Present value of lease payments Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Represents information pertaining to 10% rolling stock option plan. Ten Percent Rolling Stock Option Plan [Member] 10% Rolling Stock Option Plan Represents information pertaining to 2022 equity incentive plan. Equity Incentive Plan 2022 [Member] 2022 Equity Incentive Plan Share-based Compensation Arrangement by Share-based Payment Award [Line Items] SHAREHOLDERS' EQUITY Options outstanding Outstanding, end of period Outstanding, beginning of period The percentage of vesting provided on rolling stock option plan by the company. Percentage of Vesting On Rolling Stock Percentage of vesting on Rolling Stock Granted Option granted Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period Shares issued Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Term of stock option Intrinsic value of options exercised Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized Maximum share based awards Number of Stock Options Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period Cancelled/Expired Exercisable, end of period Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Outstanding, end of period (in dollars per share) Outstanding, beginning of period (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Exercised (in dollars per share) Cancelled/Expired (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Exercisable, end of period (in dollars per share) Stock options outstanding Intrinsic Value of Stock options outstanding Intrinsic value of options exercisable Intrinsic Value of Stock options exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Weighted Average Remaining life (Years) of Stock options outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Weighted Average Remaining life (Years) of Stock options exercisable Subsidiary or Equity Method Investee, Sale of Stock, Type [Table] Subsidiary, Sale of Stock [Line Items] Number of non-transferable subscription right issued for each common share owned by that shareholder on the record date. Rights Offering, Number Of Subscription Right Issued For Each Common Share Owned Number of non-transferable subscription right issued Class of Warrant or Right, Number of Securities Called by Each Warrant or Right Number of subscription right to purchase Sale of Stock, Consideration Received on Transaction Net proceeds Payments of Stock Issuance Costs Payments of stock Weighted average number of shares outstanding before adjustment for the Rights Offering. Weighted Average Number of Shares Outstanding, Before Adjustment For Rights Offering Weighted average number of shares outstanding before adjustment Other Commitments [Table] Other Commitments [Line Items] COMMITMENTS AND CONTINGENCIES Number of Reportable Segments Number of reportable segments Number of Operating Segments Number of operating segments Revenues Revenue