Document and Entity Information Document Type Document Quarterly Report Document Period End Date Document Transition Report Securities Act File Number Entity Registrant Name Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Address, Address Line One Entity Address, Address Line Two Entity Address, City or Town Entity Address, State or Province Entity Address, Country Entity Address, Postal Zip Code City Area Code Local Phone Number Title of 12(b) Security Trading Symbol Security Exchange Name 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 Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Period Focus Entity Central Index Key Amendment Flag CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) Statement [Table] Statement Statement [Line Items] Statement Revenues [Abstract] REVENUE: Revenues Revenue Revenue from gold and silver sales Operating Expenses [Abstract] OPERATING EXPENSES: Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization Production costs applicable to sales Cost, Depreciation, Amortization and Depletion Depreciation and depletion Gross Profit Gross profit Costs and Expenses [Abstract] OTHER OPERATING INCOME (EXPENSES): The amount of advanced project cost. Advanced Project Cost Advanced projects Advanced projects Oil and Gas, Full Cost Method, Capitalized Cost Excluded from Amortization, Exploration Cost, Period Cost Exploration General and Administrative Expense General and administrative General and administrative (Note 19) General and Administrative Expense, Total Amount of income (loss) for equity investments. Income (Loss) from Equity Investments Income (loss) from equity method investments (Note 9) Loss from investment in McEwen Copper Income (loss) from equity method investments Depreciation, Nonproduction Depreciation Gross amount of expense recognized during the period that is associated with an asset retirement obligation. Asset Retirement Obligation Reclamation Gross Reclamation and remediation Costs and Expenses Other operating expenses Total other operating expenses Operating Income (Loss) Operating income (loss) Nonoperating Income (Expense) [Abstract] OTHER INCOME (EXPENSES): Interest Income (Expense), Operating Interest and other finance expenses Interest and other income (expenses) Other Nonoperating Income (Expense) Other income (expenses) (Note 3) Total other income (expenses) Other income The dilution gain (loss) associated with the equity method investment., reduction in the investor's carrying amount of an equity method investment resulting from a decrease in its ownership percentage, when the investee issues additional equity and the investor does not maintain its proportional interest. Dilution Gain (Loss) From Equity method Investments Dilution loss from investments in Paragon Advanced Labs Inc. (Note 9) Dilution gain (loss) Nonoperating Income (Expense) Total other income (expenses) Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income (loss) before income and mining taxes Income Tax Expense (Benefit) Income and mining tax recovery (Note 17) Income tax recovery (expense) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net income (loss) after income and mining taxes Net income (loss) NET INCOME (LOSS) PER SHARE Net income (loss) per share (Note 13): Earnings Per Share, Basic Basic (in dollars per share) Basic net income (loss) per share Earnings Per Share, Diluted Diluted (in dollars per share) Diluted net income (loss) per share Weighted Average Number of Shares Outstanding, Diluted [Abstract] Weighted average common shares outstanding (thousands) (Note 13): Weighted Average Number of Shares Outstanding, Basic Basic (in shares) Weighted average common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Diluted (in shares) Weighted average diluted shares (in shares) Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] OTHER COMPREHENSIVE INCOME: Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent Change in foreign currency translation adjustments (Note 9) Change in foreign currency translation adjustments Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive income (loss) CONSOLIDATED BALANCE SHEETS Assets [Abstract] ASSETS Assets, Current [Abstract] Current assets: Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Cash and cash equivalents (Note 4) Marketable Securities, Current Marketable securities (Note 5) Marketable securities The total amount due to the entity within one year of the balance sheet date (or one operating cycle, if longer) from outside sources, including trade accounts receivable, notes and loans receivable, as well as any other types of receivables, net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value, prepaids and other current assets. Receivables, Prepaids, Other Assets Net, Current Receivables, prepaids and other current assets (Note 6) Receivables, prepaids and other current assets Other Receivables, Net, Current Due from McEwen Copper Inc. (Note 14) Other Receivable, after Allowance for Credit Loss, Current, Related Party [Extensible Enumeration] Inventory, Net Inventories (Note 7) Current portion Assets, Current Current assets Total current assets Net carrying value of mineral property interests and plant and equipment. Mineral Property Interests And Plant And Equipment Net Mineral property interests and plant and equipment, net (Note 8) Equity Method Investments. Equity method investments (Note 9) Total equity method investments Initial carrying amount of the equity investment Other Receivable, after Allowance for Credit Loss, Noncurrent Loan receivable from McEwen Copper Inc. (Note 14) Other Receivable, after Allowance for Credit Loss, Noncurrent, Related Party [Extensible Enumeration] Deferred Income Tax Assets, Net Deferred tax assets Inventory, Noncurrent Inventories (Note 7) Restricted Cash, Noncurrent Restricted cash (Note 4) Restricted cash in non-current assets Other Assets, Noncurrent Other assets Assets Total assets TOTAL ASSETS Liabilities and Equity [Abstract] LIABILITIES & SHAREHOLDERS' EQUITY Liabilities, Current [Abstract] Current liabilities: Accounts Payable and Accrued Liabilities, Current Accounts payable and accrued liabilities Accounts payable and accrued liabilities Business Combination, Contingent Consideration, Liability, Current Consideration payable for Canadian Gold Corp. acquisition (Note 14) Long-Term Debt, Current Maturities Less: current maturities of debt Long-term debt, current portion (Note 10) Asset Retirement Obligation, Current Reclamation and remediation liabilities (Note 11) Less: current portion Contract with Customer, Liability, Current Contract liability (Note 16) Current portion of the liability for flow-through share premium. Flow-through shares (FTSs) may be issued by certain corporations in the mining, oil and gas, and renewable energy and energy conservation sectors may issue FTSs to help finance their exploration and project development activities. Flow-through shares must be newly issued shares that have the attributes generally attached to common shares. Flow Through Share Premium Current Flow-through share premium (Note 12) Taxes Payable, Current Tax liabilities Amount of lease liability due within one year or the normal operating cycle, if longer. Lease Liability , Current Lease liabilities Liabilities, Current Current liabilities Current liabilities Total current liabilities Long-Term Debt, Excluding Current Maturities Long-term debt, net of issuance costs (Note 10) Long-term debt Asset Retirement Obligations, Noncurrent Reclamation and remediation liabilities (Note 11) Long-term portion Deferred Income Tax Liabilities, Net Deferred income tax liability Deferred tax liabilities Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date. Lease Liability , Non-current Lease liabilities Other Liabilities, Noncurrent Other liabilities Liabilities Total liabilities Total liabilities Total liabilities Equity, Attributable to Parent [Abstract] Shareholders' equity: Common Stock, Value, Issued Common shares: 59,453 as at March 31, 2026 (in thousands) (Note 12) Retained Earnings (Accumulated Deficit) Accumulated deficit Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive income Equity, Including Portion Attributable to Noncontrolling Interest Balance Balance Total shareholders' equity Liabilities and Equity TOTAL LIABILITIES & SHAREHOLDERS' EQUITY Boolean flag that represents number of shares not disclosed. Number Of Authorized Shares Not Disclosed Number of authorized shares Common Stock, Shares, Issued Common, shares issued Common Stock, Shares, Outstanding Common, shares outstanding CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY Equity Components [Axis] Equity Component [Domain] Stock that is subordinate to all other stock of the issuer and excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Common Stock [Member] Common Stock and Additional Paid-in Capital Retained Earnings [Member] Accumulated Deficit AOCI Attributable to Parent [Member] Accumulated Other Comprehensive Income Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Shareholders' Equity Shares, Issued Balance (in shares) Balance (in shares) Stock Issued During Period, Value, Purchase of Assets Investment in Canadian Gold Corp. (Note 18) Stock Issued During Period, Shares, Purchase of Assets Shares issued for acquisition of mineral property interests (in shares) Investment in Canadian Gold Corp. (Note 18) (in shares) Stock Issued During Period, Value, New Issues Value of shares issued for consideration for maintenance, continuation, and extension of maturity date Sales of flow-through shares (Note 12) Net proceeds Stock Issued During Period, Shares, New Issues Shares issued for consideration for maintenance, continuation, and extension of maturity date Sales of flow-through shares (Note 12) (in shares) Shares issued Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Stock-based compensation Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Stock-based compensation (in shares) Value of shares of stock issued during the period as part of a transaction to acquire investments. tock Issued During Period, Value, Purchase of Investments Investments in Goliath Resources Limited Number of shares of stock issued during the period as part of a transaction to acquire investments. Stock Issued During Period, Shares, Purchase of Investments Investments in Goliath Resources Limited (in shares) Number of shares exchanged Amount of decrease in additional paid-in capital (APIC) from using of net proceeds from the offering of the Convertible Notes to pay the cost of the Capped Call Transactions. Adjustment to Additional Paid-in Capital, Purchase of Capped Call Options Purchase of capped call options Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax Change in foreign currency translation adjustments (Note 9) CONSOLIDATED STATEMENTS OF CASH FLOWS Net Cash Provided by (Used in) Operating Activities [Abstract] Cash flows from operating activities: Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income (loss) from operating activities: Income (Loss) from Equity Method Investments (Income) loss from equity method investments (Note 9) Income (loss) from equity method investment Proceeds from Dividends Received Dividends received from Minera Santa Cruz S.A. (Note 9) Depreciation, Depletion and Amortization Depreciation, amortization and depletion Marketable Security, Unrealized Gain (Loss) Loss (gain) on marketable securities (Note 5) Amount of reclamation accretion and adjustments, which includes, but is not limited to, accretion expense from asset retirement obligations, environmental remediation obligations, and other contingencies. Reclamation Accretion And Adjustments, Total Reclamation accretion and adjustments to estimate Income Tax Credits and Adjustments Deferred income and mining tax (recovery) expense (Note 17) Amount of amortization expense attributable to flow through premium Flow Through Premium (Discount) Amortization Flow-through premium amortization (Note 12) Other Noncash Income (Expense) Other Increase (Decrease) in Operating Capital [Abstract] Changes in non-cash working capital items: Increase (Decrease) in Inventories Change in inventories Increase (Decrease) in Other Operating Assets Change in other assets related to operations Increase (Decrease) in Accounts Payable and Accrued Liabilities Change in accounts payable and accrued liabilities Increase (Decrease) in Contract with Customer, Liability Change in contract liability Increase (Decrease) in Other Operating Liabilities Change in other liabilities related to operations Net Cash Provided by (Used in) Operating Activities Cash provided by (used in) operating activities Net Cash Provided by (Used in) Investing Activities [Abstract] Cash flows from investing activities: Payments to Acquire Mining Assets Additions to mineral property interests and plant and equipment Origination of Notes Receivable from Related Parties Loan receivable from McEwen Copper Inc. (Note 14) Dividends received on equities and other investments during the current period. Proceeds from Dividends Received 1 Dividends received from Minera Santa Cruz S.A. (Note 9) Payments to Acquire Marketable Securities Investment in marketable securities (Note 5) Proceeds from Sale of Other Assets, Investing Activities Other Payments to Acquire Equity Method Investments Investment in McEwen Copper Inc. (Note 9) Investment in paragon Net Cash Provided by (Used in) Investing Activities Cash used in investing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Cash flows from financing activities: The cash inflow from the additional capital contribution to the entity related to flow-through common stock. Flow-through shares (FTSs) may be issued by certain corporations in the mining, oil and gas, and renewable energy and energy conservation sectors may issue FTSs to help finance their exploration and project development activities. Flow-through shares must be newly issued shares that have the attributes generally attached to common shares. Proceeds From Issuance Of Flow Through Common Stock Issuance of flow-through common shares, net of issuance costs (Note 12) Proceeds from Convertible Debt Proceeds from senior convertible notes (Note 10) The cash outflow for capped call options which are classified as financing activities. Payments to Acquire Capped Call Options Purchase of capped call options (Note 10) Purchase of capped call options Payments of Financing Costs Convertible notes financing costs (Note 10) Repayments of Long-Term Debt Principal repayment on long-term debt (Note 10) Finance Lease, Principal Payments Payment of finance lease obligations Net Cash Provided by (Used in) Financing Activities Cash provided by financing activities Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations Effect of exchange rate change on cash and cash equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Increase in cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations Cash, cash equivalents and restricted cash, end of period Cash, cash equivalents and restricted cash, beginning of period Total cash and cash equivalents and restricted cash Supplemental Cash Flow Information [Abstract] Supplemental disclosure of cash flow information: Interest Paid, Excluding Capitalized Interest, Operating Activities Interest paid Interest Income, Other Interest received Income Taxes Paid, Net Taxes paid Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Non-cash investing activities: Liabilities Assumed Mineral property additions in accounts payable and accrued liabilities Represents the fair value of equity instruments (such as warrants) received by the reporting entity from a related party in connection with the issuance of a loan, recognized as a non-cash investing activity in the statement of cash flows. Receipt of Warrants In Connection With Loan to Related Party Receipt of warrants in connection with loan to McEwen Copper Inc. (Note 14) Receipt of warrants in connection with loan NATURE OF OPERATIONS AND BASIS OF PRESENTATION Business Description and Basis of Presentation [Text Block] NATURE OF OPERATIONS AND BASIS OF PRESENTATION OPERATING SEGMENT REPORTING Segment Reporting Disclosure [Text Block] OPERATING SEGMENT REPORTING OTHER INCOME (EXPENSES) Other Nonoperating Income and Expense [Text Block] OTHER INCOME (EXPENSES) CASH AND CASH EQUIVALENTS AND RESTRICTED CASH Cash and Cash Equivalents Disclosure [Text Block] CASH AND CASH EQUIVALENTS AND RESTRICTED CASH MARKETABLE SECURITIES Investments in Debt and Equity Instruments, Cash and Cash Equivalents, Unrealized and Realized Gains (Losses) [Text Block] MARKETABLE SECURITIES Receivables Prepaids And Other Assets [Abstract] RECEIVABLES, PREPAIDS AND OTHER CURRENT ASSETS The entire disclosure for receivables and other current assets. Receivables And Other Current Assets [Text Block] RECEIVABLES, PREPAIDS AND OTHER CURRENT ASSETS INVENTORIES Inventory Disclosure [Text Block] INVENTORIES No definition available. MINERAL PROPERTY INTERESTS AND PLANT AND EQUIPMENT The entire disclosure for mineral property interests and plant and equipment. Mineral Property Interests And Plant And Equipment [Text Block] MINERAL PROPERTY INTERESTS AND PLANT AND EQUIPMENT EQUITY METHOD INVESTMENTS Equity Method Investments and Joint Ventures Disclosure [Text Block] EQUITY METHOD INVESTMENTS DEBT Debt Disclosure [Text Block] DEBT RECLAMATION AND REMEDIATION LIABILITIES Asset Retirement Obligation Disclosure [Text Block] RECLAMATION AND REMEDIATION LIABILITIES