75000 - Document - Document And Entity Information
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75010 - Statement - Consolidated Statements of Operations and Comprehensive Income (Loss)
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75020 - Statement - Consolidated Statements of Operations and Comprehensive Income (Loss) 2
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75030 - Statement - Consolidated Statements of Operations and Comprehensive Income (Loss) 3
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75040 - Statement - Consolidated Statements of Operations and Comprehensive Income (Loss) 4
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75050 - Statement - Consolidated Statements of Changes in Stockholders' Equity
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75060 - Statement - Consolidated Statements of Changes in Stockholders' Equity (Parentheticals)
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75070 - Statement - Consolidated Statements of Cash Flows
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75080 - Statement - Consolidated Statements of Cash Flows 2
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75090 - Statement - Consolidated Balance Sheets
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75100 - Statement - Consolidated Balance Sheets 2
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75110 - Statement - Consolidated Balance Sheets (Parentheticals)
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995455 - Disclosure - Note 1-The Company
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995465 - Disclosure - Note 1 - Basis of Preparation of Financial Statements
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995475 - Disclosure - Note 2 - Summary of Significant Accounting Policies
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995485 - Disclosure - Note 2 - Sale of Hecla Quebec Inc. and Discontinued Operations
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995495 - Disclosure - Note 4 - Investments
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995505 - Disclosure - Note 3 - Business Segments and Sales of Products
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995515 - Disclosure - Note 5 - Business Segments, Sales of Products and Significant Customers
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995525 - Disclosure - Note 4 - Income and Mining Taxes
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995535 - Disclosure - Note 5 - Environmental and Reclamation Activities
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995545 - Disclosure - Note 5 - Employee Benefit Plans
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995555 - Disclosure - Note 6 - Employee Benefit Plans
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995565 - Disclosure - Note 6 - Earnings (Loss) Per Common Share
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995575 - Disclosure - Note 7 - Income and Mining Taxes
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995585 - Disclosure - Note 7 - Stockholders' Equity
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995595 - Disclosure - Note 8 - Debt, Credit Agreement and Leases
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995605 - Disclosure - Note 9 - Income (Loss) per Common Share
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995615 - Disclosure - Note 9 - Debt, Credit Facility and Leases
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995625 - Disclosure - Note 9 - Derivative Instruments
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995635 - Disclosure - Note 10 - Fair Value Measurement
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995645 - Disclosure - Note 11 - Derivative Instruments
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995655 - Disclosure - Note 11 - Product Inventories
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995665 - Disclosure - Note 11- Fair Value Measurement
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995675 - Disclosure - Note 12 - Commitments, Contingencies and Obligations
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995685 - Disclosure - Note 13 - Stockholders' Equity
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995695 - Disclosure - Note 13 - Accumulated Other Comprehensive Income (Loss)
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995705 - Disclosure - Note 14 - Product Inventories
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995715 - Disclosure - Note 13 - Recent Accounting Pronouncements
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995725 - Disclosure - Note 14 - Subsequent Events
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995735 - Disclosure - Note 16 - Properties, Plants, Equipment and Mine Development, net, and Lease Commitments
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995745 - Disclosure - Note 17 - Commitments, Contingencies, and Obligations
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995755 - Disclosure - Note 17 - Subsequent Events
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995765 - Disclosure - Note 2 - Summary of Significant Accounting Policies (Policies)
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995775 - Disclosure - Note 2 - Sale of Hecla Quebec Inc. and Discontinued Operations (Tables)
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995785 - Disclosure - Note 3- Business Segments and Sales of Products (Tables)
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995795 - Disclosure - Note 5 - Business Segments, Sales of Products and Significant Customers (Tables)
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995805 - Disclosure - Note 4 - Income and Mining Taxes (Tables)
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995815 - Disclosure - Note 5 - Environmental and Reclamation Activities (Tables)
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995825 - Disclosure - Note 5 - Employee Benefit Plans (Tables)
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995835 - Disclosure - Note 6 - Earnings (Loss) Per Common Share (Tables)
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995845 - Disclosure - Note 6 - Employee Benefit Plans (Tables)
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995855 - Disclosure - Note 7 - Stockholders' Equity (Tables)
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995865 - Disclosure - Note 7 - Income and Mining Taxes (Tables)
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995875 - Disclosure - Note 8 - Debt, Credit Agreement and Leases (Tables)
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995885 - Disclosure - Note 9 - Debt, Credit Facility and Leases (Tables)
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995895 - Disclosure - Note 9 - Income (Loss) per Common Share (Tables)
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995905 - Disclosure - Note 9 - Derivative Instruments (Tables)
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995915 - Disclosure - Note 10 - Fair Value Measurement (Tables)
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995925 - Disclosure - Note 11 - Derivative Instruments (Tables)
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995935 - Disclosure - Note 11 - Fair Value Measurement (Tables)
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995945 - Disclosure - Note 11. Product Inventories (Tables)
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995955 - Disclosure - Note 13 - Stockholders' Equity (Tables)
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995965 - Disclosure - Note 13 - Accumulated Other Comprehensive Income (Loss) (Tables)
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995975 - Disclosure - Note 14 - Product Inventories (Tables)
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995985 - Disclosure - Note 16 - Properties, Plants, Equipment and Mine Development, net, and Lease Commitments (Tables)
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995995 - Disclosure - Note 2 - Summary of Significant Accounting Policies (Details Textual)
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996005 - Disclosure - Note 4 - Investments (Additional Information) (Details)
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996015 - Disclosure - Note 4 -Business Segments, Sales of Products and Significant Customers (Additional Information) (Details)
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996025 - Disclosure - Note 4 -Business Segments, Sales of Products and Significant Customers - Schedule of Information About Reportable Segments (Details)
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996035 - Disclosure - Note 4 -Business Segments, Sales of Products and Significant Customers - Schedule of Information About Reportable Segments (Parenthetical) (Details)
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996045 - Disclosure - Note 4 -Business Segments, Sales of Products and Significant Customers - Schedule of Long-lived Assets by Geographic Area (Details)
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996055 - Disclosure - Note 4 -Business Segments, Sales of Products and Significant Customers - Schedule of Sales Contributed by Each Segment (Details)
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996065 - Disclosure - Note 4 -Business Segments, Sales of Products and Significant Customers - Schedule of Sales of Products by Metal (Details)
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996075 - Disclosure - Note 4 -Business Segments, Sales of Products and Significant Customers - Schedule of Sales Information by Geographic Area (Details)
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996085 - Disclosure - Note 4 -Business Segments, Sales of Products and Significant Customers - Schedule of Sales from Continuing Operations to Significant Metals Customers (Details)
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996095 - Disclosure - Note 4 -Business Segments, Sales of Products and Significant Customers - Summary of Trade Accounts Receivable (Details)
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996105 - Disclosure - Note 5 - Environmental and Reclamation Activities - Schedule of Reclamation and Closure Costs Liabilities (Details)
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996115 - Disclosure - Note 5 - Environmental and Reclamation Activities - Schedule of Reclamation and Closure Costs Activities (Details)
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996125 - Disclosure - Note 5 - Environmental and Reclamation Activities - Schedule of Change in Asset Retirement Obligation (Details)
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996135 - Disclosure - Note 5 - Environmental and Reclamation Activities - Additional Information (Details)
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996145 - Disclosure - Note 6 - Employee Benefit Plans (Details Textual)
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996145 - Disclosure - Note 6 - Employee Benefit Plans (Details Textual) [Default]
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996155 - Disclosure - Note 6 - Employee Benefit Plans - Change in Benefit Obligation (Details)
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996165 - Disclosure - Note 6 - Employee Benefit Plans - Amounts Recognized in the Consolidated Balance Sheets (Details)
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996175 - Disclosure - Note 6 - Employee Benefit Plans - Benefit Obligation and Prepaid Benefit Costs Assumptions (Details)
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996185 - Disclosure - Note 6 - Employee Benefit Plans - Net Periodic Pension Cost (Details)
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996195 - Disclosure - Note 6 - Employee Benefit Plans - Investment Policy Allocation (Details)
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996205 - Disclosure - Note 6 - Employee Benefit Plans - Fair Value by Asset Category (Details)
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996215 - Disclosure - Note 6 - Employee Benefit Plans - Future Benefit Payments (Details)
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996225 - Disclosure - Note 6 - Employee Benefit Plans - Accumulated Benefit Obligations (Details)
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996235 - Disclosure - Note 6 - Employee Benefit Plans - Pension and Benefit Plan Amounts Included in Accumulated Other Comprehensive Income (Details)
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996245 - Disclosure - Note 7 - Income and Mining Taxes - Schedule of Components of Income and Mining Tax Benefit (Provision) (Details)
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996255 - Disclosure - Note 7 - Income and Mining Taxes - Schedule of Domestic and Foreign Components of Income (Loss) Before Income and Mining Taxes (Details)
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996265 - Disclosure - Note 7 - Income and Mining Taxes - Schedule of Effective Income Tax Reconciliation (Details)
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996275 - Disclosure - Note 7 - Income and Mining Taxes - Schedule of Components of Net Deferred Tax Assets and Liabilities (Details)
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996285 - Disclosure - Note 7 - Income and Mining Taxes - Schedule of Income And Mining Tax Payments Net of Refunds (Details)
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996295 - Disclosure - Note 7 - Income and Mining Taxes - Schedule of Changes in Valuation Allowance (Details)
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996305 - Disclosure - Note 7 - Income and Mining Taxes - Additional Information (Details)
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996315 - Disclosure - Note 9 - Income (Loss) per Common Share (Details Textual)
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996325 - Disclosure - Note 9 - Income (Loss) per Common Share - Net Income (Loss) Per Share (Details)
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996335 - Disclosure - Note 9 - Debt, Credit Facility and Leases (Details Textual)
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996345 - Disclosure - Note 9 - Debt, Credit Facility and Leases - Debt Summary (Details)
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996355 - Disclosure - Note 9 - Debt, Credit Facility and Leases - Future Payments of Long-term Debt (Details)
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996365 - Disclosure - Note 9 - Debt, Credit Facility and Leases - Maturities of Finance Lease (Details)
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996375 - Disclosure - Note 9 - Debt, Credit Facility and Leases - Maturities of Operating Lease (Details)
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996385 - Disclosure - Note 9 - Debt, Credit Facility and Leases - Maturities of Operating Lease (Details) 2
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996395 - Disclosure - Note 11 - Derivative Instruments (Details Textual)
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996405 - Disclosure - Note 11 - Derivative Instruments - Foreign Currency (Details)
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996415 - Disclosure - Note 11 - Derivative Instruments - Summary of Forward Sales Contracts (Details)
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996425 - Disclosure - Note 11 - Derivative Instruments - Fair Value of Forward and Put Option Contracts (Details)
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996425 - Disclosure - Note 11 - Derivative Instruments - Fair Value of Forward and Put Option Contracts (Details) [Default]
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996435 - Disclosure - Note 11 - Fair Value Measurement (Details Textual)
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996445 - Disclosure - Note 11 - Fair Value Measurement - Details of Fair Value Adjustment (Details)
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996455 - Disclosure - Note 11 - Fair Value Measurement - Assets and Liabilities Accounted for at Fair Value (Details)
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996465 - Disclosure - Note 13 - Stockholders' Equity (Details Textual)
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996475 - Disclosure - Note 13 - Stockholders' Equity - Unvested Restricted Stock (Details)
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996485 - Disclosure - Note 13 - Stockholders' Equity - Unvested Performance-based Shares (Details)
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996495 - Disclosure - Note 13 - Stockholders' Equity - Details of Warrants Outstanding (Details)
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996505 - Disclosure - Note 13- Accumulated Other Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive Loss (Details)
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996515 - Disclosure - Note 14 - Product Inventories - Schedule of Our Major Components of Product Inventories (Details)
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996525 - Disclosure - Note 16 - Properties, Plants, Equipment and Mine Development, net, and Lease Commitments - Major Components of Property, Plants, Equipment and mine development (Details)
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996535 - Disclosure - Note 16 - Properties, Plants, Equipment and Mine Development, net, and Lease Commitments - Major Components of Property, Plants, Equipment and mine development (Details) 2
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996545 - Disclosure - Note 16 - Properties, Plants, Equipment and Mine Development, net, and Lease Commitments (Details textual)
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996555 - Disclosure - Note 17: Commitments, Contingencies, and Obligations (Details Textual)
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996565 - Disclosure - Note 1 - Basis of Preparation of Financial Statements (Additional Information) (Details)
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996575 - Disclosure - Note 2 - Sale of Hecla Quebec Inc. and Discontinued Operations (Additional Information) (Details)
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996585 - Disclosure - Note 2 - Sale of Hecla Quebec Inc. and Discontinued Operations - Statement of Discountinued Operation (Details)
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996595 - Disclosure - Note 2 - Sale of Hecla Quebec Inc. and Discontinued Operations - Reconciliation of Assets and Liabilities (Details)
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996605 - Disclosure - Note 3 - Business Segments and Sales of Products (Details Textual)
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996615 - Disclosure - Note 3 - Business Segments and Sales of Products - Information About Reportable Segments (Details)
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996625 - Disclosure - Note 3 - Business Segments and Sales of Products - Sales of Products (Details)
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996635 - Disclosure - Note 4 - Income and Mining Taxes - Major Components of Income Tax Provision (Benefit) (Details)
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996645 - Disclosure - Note 5 - Employee Benefit Plans (Details Textual)
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996645 - Disclosure - Note 5 - Employee Benefit Plans (Details Textual) [Default]
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996655 - Disclosure - Note 5 - Employee Benefit Plans - Net Periodic Pension Cost (Details)
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996665 - Disclosure - Note 6 - Earnings (Loss) Per Common Share - Net Income Per Common Share (Details)
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996675 - Disclosure - Note 7 - Stockholders' Equity (Details Textual)
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996685 - Disclosure - Note 7 - Stockholders' Equity - Schedule of Accumulated other comprehensive income (loss) (Details)
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996695 - Disclosure - Note 8 - Debt, Credit Agreement and Leases (Details Textual)
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996705 - Disclosure - Note 8 - Debt, Credit Agreement and Leases - Debt Summary (Details)
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996715 - Disclosure - Note 8 - Debt, Credit Agreement and Leases - Future Payments of Long-term Debt and Finance and Operating Leases (Details)
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996725 - Disclosure - Note 9 - Derivative Instruments (Details Textual)
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996735 - Disclosure - Note 9 - Derivative Instruments - Foreign Currency (Details)
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996745 - Disclosure - Note 9 - Derivative Instruments - Summary of Forward Sales Contracts (Details)
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996755 - Disclosure - Note 9 - Derivative Instruments - Fair Value of Forward and Put Option Contracts (Details)
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996765 - Disclosure - Note 10 - Fair Value Measurement (Details Textual)
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996775 - Disclosure - Note 10 - Fair Value Measurement - Details of Fair Value Adjustment (Details)
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996785 - Disclosure - Note 10 - Fair Value Measurement - Assets and Liabilities Accounted for at Fair Value (Details)
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996795 - Disclosure - Note 11 - Product Inventories - Schedule of Our Major Components of Product Inventories (Details)
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996805 - Disclosure - Note 12 - Commitments, Contingencies and Obligations (Details Textual)
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996815 - Disclosure - Note 14- Subsequent Events (Additional Information) (Details)
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Line of Credit Facility [Line Items]
Fair Value, Asset (Liability), Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]
Unrealized gain on equity securities investments
In-process [Member]
In-process [Member]
In-process
Summary of Significant Accounting Policies
Basis of Presentation and Significant Accounting Policies [Text Block]
Scenario [Axis]
Reduction in future payments, Percentage
Reduction in Future Payments, Rate
Reduction in Futute Payments, Rate
Gross Profit
Gross profit
Gross profit
Convertible Preferred Stock, Shares Issued upon Conversion
Convertible Preferred Stock, Shares
Common Stock, Dividends, Per Share, Cash Paid
Common Stock, Dividends, Per Share, Cash Paid
Common stock dividends declared, per common share (in dollars per share)
Debt Conversion, Name [Domain]
Gold Two Thousand Twenty Six Settlements For Provisional Sales [Member]
Gold Two Thousand Twenty Six Settlements For Provisional Sales [Member]
Gold 2026 Settlements For Provisional Sales [Member]
Common Stock, Capital Shares Reserved for Future Issuance
Number of shares reserve for future issuance
Schedule of Reclamation and Closure Costs Liabilities
Schedule of Accrued Liabilities [Table Text Block]
Preferred Stock, Shares Issued
Series B preferred stock, shares issued (in shares)
Underlying, Derivative Mass
Underlying, Derivative Mass
Underlying, Derivative Mass
Debt, Credit Facility and Leases
Debt Disclosure [Text Block]
Operating Lease, Liability
Operating lease liability
Operating lease liability
Interest expense, net
Interest Expense, Total
Interest Expense, Operating and Nonoperating
Interest expense
Interest expense
Quebec Ministry of Natural Resources and Forests [Member]
Quebec Ministry of Natural Resources and Forests [Member]
Deferred Tax Assets, Operating Loss Carryforwards, Foreign
Foreign net operating losses
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest, Total
Comprehensive loss from discontinued operations
Less: Income (loss) from discontinued operations, net of taxes
Subsidiary or Equity Method Investee [Line Items]
Defined Benefit Plan, Benefit Obligation, Benefits Paid
Benefits paid
Effective Income Tax Rate Reconciliation US Mining And Other Taxes, Percentage
US Mining and other taxes, Percentage
Effective Income Tax Rate Reconciliation US Mining And Other Taxes, Percentage
Long-Term Line of Credit, Total
Long-Term Line of Credit
Long-term line of credit
Zinc Two Thousand Twenty Five Settlements For Provisional Sales [Member]
Zinc Two Thousand Twenty Five Settlements For Provisional Sales [Member]
Zinc 2025 Settlements For Provisional Sales [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis, Gain (Loss) Included in Earnings, Total
Fair Value, Assets and Liabilities Measured on Recurring Basis, Gain (Loss) Included in Earnings
Loss (gain) on derivative contracts
(Loss) gain on derivative contracts
Derivative, Loss, Statement of Income or Comprehensive Income [Extensible Enumeration]
Derivative, loss, statement of income or comprehensive income [Extensible Enumeration]
Long-Term Debt, Maturity, Year Three
2028
Costs applicable to sales - temporarily suspended operations
Costs Applicable To Sales Temporarily Suspended Operations
Costs Applicable To Sales Temporarily Suspended Operations
Spread over the London Interbank Offered Rate
Debt Instrument, Basis Spread on Variable Rate
Debt instrument, basis spread on variable rate
U.S. Fixed Income [Member]
Fixed Income Funds [Member]
Commitments and Contingencies
Commitments and contingencies (Notes 5, 6, 9, 10, 14, 15, and 16)
Commodity Contract [Member]
Weighted average number of common shares outstanding - diluted
Weighted Average Number of Shares Outstanding, Diluted
Diluted weighted average common shares
Weighted average number of common shares outstanding - diluted
Not Designated as Hedging Instrument [Member]
Stock Repurchased During Period, Shares
Stock Repurchased During Period, Shares (in shares)
Other Receivables, Net, Current
Other Receivables, Net, Current, Total
Other, net
Asset Acquisition [Axis]
Stock-based compensation expense
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition, Total
Stock-based compensation expense
Schedule of fair values of plan by asset category
Schedule of fair value of plan assets by category.
Fair Value of Plan Assets by Category [Table Text Block]
Minimum [Member]
Minimum [Member]
San Sebastian [Member]
Reporting segment classified as San Sebastian.
San Sebastian [Member]
Defined Benefit Plan, Expected Future Benefit Payment, Year One
2026
Proceeds from sale of Minera Hecla
Proceeds from sale of Minera Hecla
Proceeds from sale of Minera Hecla
Long-Term Debt, Maturity, Year Two
2027
Liability, Defined Benefit Plan, Current
Accrued benefit liability
Letter of Credit [Member]
Preferred Stock, Shares Outstanding, Ending Balance
Preferred Stock, Shares Outstanding, Beginning Balance
Preferred Stock, Shares Outstanding
Series B preferred stock, shares outstanding (in shares)
Inventory [Axis]
Accrued Reclamation Costs, Current
Accrued reclamation and closure costs
Customer K [Member]
Customer K [Member]
Customer K [Member]
Fair Value, Recurring [Member]
Document Financial Statement Restatement Recovery Analysis [Flag]
Silver 2025 Settlements For Provisional Sales [Member]
Silver Two Thousand Twenty Five Settlements For Provisional Sales [Member]
Silver Two Thousand Twenty Five Settlements For Provisional Sales [Member]
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]
Accrued Environmental Loss Contingencies, Noncurrent
Reclamation and closure costs, non-current
Issuance of Common Share
Common Stock, Shares, Issued
Segment Reporting [Line Items]
Represents the 2024 settlements for forecasted sales of silver.
Silver 2024 Settlements for Forecasted Sales [Member]
Silver 2024 Settlements for Forecasted Sales [Member]
hl_AverageRealizedSilverPricePerOunce
Represents the average silver price realized during the period.
Average Realized Silver Price Per Ounce (in dollars per share)
Discontinued Operation of Inventories [Abstract]
Discontinued Operation of Inventories [Abstract]
Inventories:
Debt Instrument, Face Amount
Debt instrument, face amount
Total benefit (provision), Amount
Income Tax Expense (Benefit)
Total benefit (provision), Amount
Income and mining tax (provision) benefit
Income and mining tax provision
Provision for income taxes
Total income and mining tax provision
Environmental Loss Contingency, Current, Statement of Financial Position [Extensible Enumeration]
Property, Plant and Equipment [Member]
Plant And Equipment [Member]
Counterparty Name [Domain]
Schedule of allocation of assets
Schedule of investment policy allocation.
Investment Policy Allocation [Table Text Block]
Repayments of Debt
Repayments of debt
Repayment of debt
Restricted Stock Units (RSUs) [Member]
Common stock issued under ATM program , shares
Common stock issued under ATM program , shares
Common stock issued under ATM program , shares
Schedule of estimates of future benefit payments
Schedule of Expected Benefit Payments [Table Text Block]
Stock Issued During Period, Value, Conversion of Units
Common stock issued upon conversion
Effective Income Tax Rate Reconciliation US Mining and Other Taxes Amount
Effective Income Tax Rate Reconciliation US Mining and Other Taxes Amount
US Mining and other taxes, Amount
Customer C [Member]
Customer C [Member]
Customer C [Member]
Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net
Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net
Price Risk Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net
Price Risk Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net
Class of Warrant or Right, Number of Securities Called by Warrants or Rights
warrant holder
Deferred tax assets:
Deferred Tax Assets, Net [Abstract]
Deferred tax liabilities
Deferred Tax Liabilities, Net
Net deferred tax liability
Net deferred tax liability
Subsidiary or Equity Method Investee, Sale of Stock [Table]
Debt, Current
Debt, Current, Total
Current debt
Less: current debt
The value of stock issued during period for a 401k match.
Stock issued for 401(k) match
Common stock issued for 401(k) match
Represents the IQ notes.
IQ Notes [Member]
IQ Notes [Member]
Operating Segments [Member]
Schedule of changes in the plans' benefit obligations and fair value of assets
Schedule of Defined Benefit Plans Disclosures [Table Text Block]
Other Postretirement Benefits, Individual Contracts, Type of Deferred Compensation [Domain]
Accounts receivable related to working capital adjustments
Accounts Receivable Related To Working Capital Adjustments
Accounts Receivable Related To Working Capital Adjustments
Line of Credit Facility, Maximum Borrowing Capacity
Line of credit facility, maximum borrowing capacity
Income Tax Authority, Name [Axis]
Accrued Environmental Loss Contingencies, Current
Reclamation and closure costs, current
Zinc 2024 Settlements for Forecasted Sales [Member]
Zinc 2024 Settlements for Forecasted Sales [Member]
Zinc 2024 Settlements for Forecasted Sales
Deferred Tax Assets, Tax Credit Carryforwards
Deferred Tax Assets, Tax Credit Carryforwards, Total
Deferred tax assets, tax credit carryforwards
Amount of net periodic benefit cost (credit) except service cost for defined benefit plan.
hl_DefinedBenefitPlanNetPeriodicBenefitCostCreditExceptServiceCost
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Except Service cost
Concentrates [Member]
Concentrates [Member]
Concentrates
Table Text Block [Abstract]
Notes Tables
Aggregate Penalties Costs And Contributions
Aggregate Penalties Costs And Contributions
Aggregate penalties, costs and contributions
Discount rate: net periodic pension cost
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate
Subsequent Event Type [Domain]
Segment Reporting, Long-Lived Asset, Expenditure for Addition
Capital additions
Benefit obligation at beginning of year
Defined Benefit Plan, Benefit Obligation
Benefit obligation at end of year
Inventory [Domain]
Cost of Product and Service Sold
Total cost of sales
Total cost of sales
Reclassification from AOCI to cost of goods sold
Accrual for Environmental Loss Contingencies, Payments
Payment of reclamation obligations
Stock-based compensation distributed
Stock Based Compensation Unit Share
Stock Based Compensation Unit Share
Documents Incorporated by Reference
Documents Incorporated by Reference [Text Block]
Percentage price of original principal amount of debt, including accrued and unpaid interest, at which debt can be redeemed by the issuer.
hl_DebtInstrumentRedemptionPricePercentageIncludingAccruedAndUnpaidInterest
Debt instrument, redemption price, percentage, including accrued and unpaid interest
Lessee, Operating Lease, Liability, Undiscounted Excess Amount
Less: Effect of discounting, operating lease
Less: effect of discounting
Conversion of Stock, Type of Stock Converted
Conversion of Stock
Defined Benefit Plan [Abstract]
Provision for closed operations and environmental matters
Environmental Remediation Expense, before Recovery
Environmental remediation expense
State taxes, net of federal tax benefit, Amount
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount
State taxes, net of federal tax benefit, Amount
Property, Plant, and Equipment [Text Block]
Properties, Plants, Equipment and Mine Development, net, and Lease Commitments
Other Adjustments to Income, Discontinued Operations
Other Adjustments To Income Discontinued Operations
Metals Contained In Concentrates
Metals contained in concentrates (Ounce)
Represents the metals contained in concentrates.
Debt Instrument, Payment Terms
Debt Instrument, Payment Terms
Total other expense:
Nonoperating Income (Expense)
Income Tax Paid, Federal, after Refund Received
Income Tax Paid, Federal, after Refund Received, Total
Customer H [Member]
Customer H [Member]
Customer H [Member]
Distributed
Distributed Earnings
Distributed Earnings, Total
Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of deferred shares.
hl_IncrementalCommonSharesAttributableToDilutiveEffectOfDeferredShares
Incremental Common Shares Attributable to Dilutive Effect of Deferred Shares (in shares)
Tax credit carryforward term
Tax credit carryforward term
Tax credit carryforward term
Purchase of Silver Puts
Purchase of Silver Puts
Purchase of silver puts
Tax credit carryforward, expiration date
Tax Credit Carryforward, Expiration Date
General and administrative
General and Administrative Expense, Total
General and Administrative Expense
Silver Two Thousand Twenty Four Settlements For Provisional Sales [Member]
Silver Two Thousand Twenty Four Settlements For Provisional Sales [Member]
Silver 2024 Settlements For Provisional Sales [Member]
Rate differential on foreign earnings, Percentage
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent
Represents warrants with expiration date in April 2032.
Warrants Expiring in April 2032 [Member]
Income Statement [Abstract]
Represents annual yield for measurement input.
Measurement Input, Annual Yield [Member]
Discontinued Operation, Loss on disposal of Hecla Quebec Inc.
Disposal Group, Including Discontinued Operation, Loss on disposal of Business
Disposal Group, Including Discontinued Operation, Loss on disposal of Business
Document Financial Statement Error Correction [Flag]
Information related to the Senior Notes due in 2028.
The 2028 Senior Notes [Member]
Discontinued Operation, Deferred tax liabilities
Disposal Group, Including Discontinued Operation, Deferred Tax Liabilities
Disposal Group, Including Discontinued Operation, Revenue
Discontinued Operation, Sales
Comprehensive Income (Loss) Note [Text Block]
Accumulated Other Comprehensive Income (Loss)
Long-Term Debt, Maturities, Repayments of Principal in Rolling Year Two
2028
Income Tax Jurisdiction [Axis]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period
Forfeited, shares (in shares)
Debt Instrument, Unamortized Discount, Total
Debt Instrument, Unamortized Discount
Debt instrument, unamortized discount
Long term debt maturities repayments due
Long Term Debt Maturities Repayments Due
Total, long term Debt
Total, long term Debt
Cash Provided by (Used in) Investing Activity, Continuing Operation
Cash Provided by (Used in) Investing Activity, Continuing Operation, Total
Net cash provided by (used in) investing activities of continuing operations
Cash used in investing activities of continuing operations
Absolute Return [Member]
Refers to information regarding absolute return.
ICFR Auditor Attestation Flag
Debt Instrument, Measurement Input
Debt Instrument, Measurement Input
Earnings Per Share, Basic
Basic net income (loss) per common share after preferred dividends
Basic net income (loss) per common share after preferred dividends
Basic (loss) earnings per common share after preferred dividends
At the market equity distribution agreement.
At The Market Equity Distribution Agreement [Member]
ATM Equity Distribution Agreement [Member]
Document Period End Date
Period End Date
Derivative liability, measurement input
Derivative Liability, Measurement Input
Fair Value, Asset (Liability), Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]
Gain (loss) on derivative contracts
Document Information [Table]
Document Information
Finance Lease, Interest Expense
Finance lease, interest expense
Series B Preferred Stock [Member]
Agreement.
Agreement [Domain]
Period within which forecasted CAD (Canadian dollar) denominated operating costs will be hedged.
hl_ForecastedCADDenominatedOperatingCostsToBeHedgedTerm
Forecasted CAD-denominated Operating Costs to be Hedged, Term (Year)
Capital additions (excluding non-cash items)
Payments to Acquire Property, Plant, and Equipment, Total
Payments to Acquire Property, Plant, and Equipment
Additions to property, plant and equipment and mine development
Debt Instrument [Line Items]
Mine Reclamation and Closing Liability, Noncurrent
Accrued reclamation and closure costs
Represents the cumulative number of shares that have been repurchased up to a certain date.
hl_CumulativeStockRepurchased
Cumulative Stock Repurchased (in shares)
Valuation Allowance by Deferred Tax Asset [Axis]
Common stock, shares authorized (in shares)
Common Stock, Shares Authorized
Assets Needed for Immediate Settlement, Aggregate Fair Value
Assets Needed for Immediate Settlement, Aggregate Fair Value
Disposal Group, Including Discontinued Operation, Finance And Operating Lease Liability Current
Disposal Group, Including Discontinued Operation, Finance And Operating Lease Liability Current
Discontinued Operation, Finance leases
Statement of Stockholders' Equity [Abstract]
Measurement Input, Inflation Rates [Member]
Measurement Input, Inflation Rates [Member]
Schedule of Investments [Abstract]
Share-Based Payment Arrangement, Performance Shares, Activity
Share-Based Payment Arrangement, Performance Shares, Activity [Table Text Block]
Finance Lease, Right-of-Use Asset, after Accumulated Amortization, Total
Finance Lease, Right-of-Use Asset, after Accumulated Amortization
Finance lease right-of-use asset
Incentive Compensation Units Shares
Incentive compensation units shares
Incentive Compensation Units Shares
The value of stock issued during period to directors.
Stock issued to directors
Common stock issued to directors
Foreign Currency
Foreign Currency Transactions and Translations Policy [Policy Text Block]
Debt Conversion Description [Axis]
Stockpiled ore [Member]
Stockpiled ore [Member]
Stockpiled ore
Dividends [Domain]
Statement of Financial Positions Location, Balance [Domain]
Statement of Financial Positions Location, Balance [Domain]
Investments [Domain]
Discontinued operations
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Basic Share
Income (loss) from discontinued operations
Other Comprehensive Income (Loss), Net of Tax
Net current year other comprehensive income (loss)
Disposal Group, Including Discontinued Operation, Inventory
Discontinued Operation, Product inventories
Recent Accounting Pronouncements
Accounting Standards Update and Change in Accounting Principle [Text Block]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent, Total
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent
Unrealized (loss) gain on derivative contracts designated as hedge transactions
Related to carbon.
Carbon
Debt Instrument, Interest Rate, Stated Percentage
Debt instrument, interest rate, stated percentage
Carrying and fair value
Fair Value, Option, Ineligible Items, Carrying Amount
Represents the amount of surety bonds in place as of a specified date. Such surety bonds may be for the purpose of, but not limited to, financial support for future reclamation and closure costs, self-insurance, and employee benefit plans.
hl_SuretyBonds
Surety bonds
Deferred Tax Liabilities, Gross, Total
Deferred Tax Liabilities, Gross
Total deferred tax liabilities
Information related to warrants in connection with the Klondex Mines Acquisition.
Warrants in Connection with Klondex Mines Acquisition [Member]
Defined Benefit Plan, Expected Future Benefit Payment, Year Two
2027
Adjustments to Additional Paid in Capital, Fair Value
Number of shares of stock issued during the period pursuant to prepayment of debt.
Common stock issued for prepayment of debt , shares (in shares)
Total assets
Identifiable assets
Assets
Total assets
Other Countries [Member]
Other Countries
Other
Title of 12(b) Security
CHINA
CHINA
2010 stock incentive plan [member
2010 Stock Incentive Plan [Member]
Preferred Stock, Value, Issued
Preferred stock, 5,000,000 shares authorized: Series B preferred stock, $0.25 par value, 2025 - 153,956 shares issued and outstanding and 2024 - 157,756 shares, liquidation preference - $7,698
Proceeds from Sale of Productive Assets
Proceeds from Sale of Productive Assets, Total
Proceeds from disposition of assets
Stock-based compensation units distributed (in shares)
Stock-based compensation units distributed in share
Stock-based compensation units distributed in share
Payments for Repurchase of Common Stock
Acquisition of treasury shares from employee equity awards
Hecla Plans [Member]
Hecla Plans
Hecla Plans [Member]
Unvested units expected to vest (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Unvested, shares (in shares)
Unvested, shares (in shares)
Reclassifications
Reclassification, Comparability Adjustment [Policy Text Block]
Represents information related to business acquisition.
Business Acquisition [Member]
Investments Measured At Net Asset Value [Member]
Investments measured at net asset value.
Discontinued Operation, Additional Disclosures [Abstract]
The entity Teck Metals Ltd.
Teck Metals Ltd [Member]
Derivative, Notional Amount
Derivative, Notional Amount
Customer Concentration Risk [Member]
Customer Concentration Risk [Member]
Schedule of net periodic pension cost
Schedule of Net Benefit Costs [Table Text Block]
Adjustments For Pension Plans [Member]
Adjustments For Pension Plans [Member]
Adjustments For Pension Plans [Member]
Effective Income Tax Rate Reconciliation, Percent
Total (provision) benefit, Percentage
Receivables, Net, Current [Abstract]
Accounts receivable:
Represents the amount of common stock issued, in noncash financing activities, for 401(k) match.
Common stock issued for 401(k) match
Common stock issued for 401(k) match
The value of common stock contributed to pension plans.
Common stock contributed to pension plans
Common stock contributed to pension plans
Variable Rate [Axis]
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Canceled In Period
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Canceled In Period
Cancelled, shares (in shares)
Interest Paid, Excluding Capitalized Interest, Operating Activity
Interest
Interest
Payments for Royalties
Royalty payments
Prior Credit Agreement [Member]
Prior Credit Agreement [Member]
Borrowings of debt
Proceeds from Issuance of Long-Term Debt, Total
Proceeds from Issuance of Long-Term Debt
Proceeds from issuance of long-term debt
Location, Statement of Financial Position, Balance [Axis]
Disposal Group, Including Discontinued Operation, Prepaid and Other Assets
Discontinued Operation, Prepaid expenses
Canada - provincial mining taxes
Deferred Other Tax Expense (Benefit)
Canada - provincial mining taxes
Mining and other taxes, Percentage
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to mining and other taxes.
Mining taxes, Percentage
Disposal Group, Including Discontinued Operation, Non operating Income Expense
Disposal Group, Including Discontinued Operation, Non operating Income Expense
Discontinued Operation, Total other expense
Disposal Group, Including Discontinued Operation, Total other (expense) income
Finance Lease, Right-of-Use Asset, Accumulated Amortization
Finance Lease, Right-of-Use Asset, Accumulated Amortization
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]
Schedule of Information About Reportable Segments
Segment Reporting [Table Text Block]
Currency remeasurement, Percentage
Effective Income Tax Rate Reconciliation Currency Remeasurement, Percentage
Effective Income Tax Rate Reconciliation Currency Remeasurement, Percentage
Customer F [Member]
Customer F [Member]
Customer F [Member]
Liabilities of discontinued operations
Disposal Group, Including Discontinued Operation, Liabilities, Current
Liabilities of discontinued operations, current
Securities Investment [Member]
Discontinued Operation, Other Operating Expenses:
Discontinued Operation, Other Operating Expenses [Abstract]
Discontinued Operation, Other Operating Expenses [Abstract]
Represents doré and metals from doré, a doré bar is a semi-pure alloy of gold and silver, usually created at the site of a mine. It is then transported to a refinery for further purification.
Dore and Metals from Dore
Fair Value of Assets Acquired
Consideration of Fair Value
Cash
Cash
Lessee, Operating Lease, Liability, to be Paid, after Rolling Year Five
More than 5 years, operating lease
Thereafter
Disposal Group, Including Discontinued Operation, Accounts Payable and Accrued Liabilities, Current
Disposal Group, Including Discontinued Operation, Accounts Payable and Accrued Liabilities, Current, Total
Discontinued Operation, Accounts payable and accrued liabilities
Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt including interest. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.
hl_LongtermDebtObligationsIncludingInterest
Total
Environmental Remediation Past Response Costs [Member]
Environmental Remediation Past Response Costs [Member]
Environmental Remediation Past Response Costs
The number of warrants or rights issued during period.
hl_ClassOfWarrantOrRightIssuedDuringPeriod
Class of Warrant or Right, Issued During Period (in shares)
Disposal Group, Including Discontinued Operation, Other Operating Expenses
Disposal Group, Including Discontinued Operation, Other Operating Expenses
Discontinued Operation, Total costs and expenses
Earnings Per Share, Diluted [Abstract]
Diluted:
Balance
Total shareholders' equity
Total stockholders’ equity
Equity, Attributable to Parent
Balance
Total fair value
Defined Benefit Plan, Plan Assets, Amount
Fair value of plan assets at end of year
Fair value of plan assets at beginning of year
Small Cap US Equity
Small Cap US Equity [Member]
Treasury Stock, Common [Member]
Treasury Stock
Finance Lease, Liability, to be Paid, Rolling Year Five
2031
Entity Address, Address Line Two
Other non-current assets
Other Assets, Noncurrent
Income and Mining Taxes
Income Tax Disclosure [Text Block]
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Table Text Block]
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings
Income Tax Jurisdiction, Domestic State and Local [Member]
Mexico
Defined Benefit Plan, Pension Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Projected Benefit Obligation
Projected benefit obligation
Previously Outstanding
Previously Outstanding
Previously outstanding
Earnings Per Share [Text Block]
Income (Loss) per Common Share
Notes Payable, Fair Value Disclosure
Notes Payable, Fair Value Disclosure
September 2022 through December 31, 2023 [Member]
September Two Thousand Twenty Two through December Thirty One Two Thousand Twenty Three [Member]
September Two Thousand Twenty Two through December Thirty One Two Thousand Twenty Three [Member]
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Diluted Share
Discontinued operations
Income (loss) from discontinued operations
Represents the estimated amount of response costs that have been incurred by the EPA in cleaning up a site.
hl_EstimatedResponseCosts
Estimated response costs
Discontinued Operations, Policy [Policy Text Block]
Discontinued Operations
Number of Reportable Segments
Number of reportable segments
Gold Two Thousand Twenty Six Settlements For Forecasted Sales [Member]
Gold Two Thousand Twenty Six Settlements For Forecasted Sales [Member]
Gold 2026 Settlements For Forecasted Sales [Member]
Stockholders' Equity Note [Abstract]
Revenue Benchmark [Member]
Revenue Benchmark [Member]
Shares Withheld for Tax Withholding Obligation, Price Per Share (in dollars per share)
hl_SharesWithheldForTaxWithholdingObligationPricePerShare
Per share or per unit amount of shares withheld for tax withholding obligation.
Auditor Name
Defined Benefit Plan, Expected Future Benefit Payment, Year Four
2029
Long-term debt including finance leases
Notes Payable, Noncurrent, Total
Notes Payable, Noncurrent
Finance Leases:
Finance Lease, Liability, to be Paid, Rolling Maturity [Abstract]
Current Foreign Tax Expense (Benefit)
Canada
Canada
Disposal Group, Including Discontinued Operation, General and Administrative Expense
Discontinued Operation, General and administrative
Unamortized prior service cost
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), after Tax
Finance Lease, Liability, to be Paid, Next Rolling 12 Months
2026, finance lease
2027
Long-term debt balance
Long-Term Debt
Long-term debt
Credit Facility [Axis]
Effective Income Tax Rate Reconciliation [Table]
Finance Lease, Liability, Undiscounted Excess Amount
Less: effect of interest, finance lease
Finance lease, liability, undiscounted excess amount
Transfer Pricing Allocation, Percentage
Transfer Pricing Allocation, Percentage
Transfer Pricing Allocation, Percentage
Increase Due to Uncertainty of Recovery [Member]
Increase Due to Uncertainty of Recovery
Lead Two Thousand Twenty Five Settlements For Provisional Sales [Member]
Lead 2025 Settlements For Provisional Sales [Member]
Lead Two Thousand Twenty Five Settlements For Provisional Sales [Member]
Stock, Class of Stock [Table]
Related to a conversion.
Conversion of Series 2018A Senior Notes Into Common Stock [Member]
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation [Abstract]
Reconciliation of cash and cash equivalents and restricted cash and cash equivalensts above to where reported on the consolidated balance sheet
Reclassification from AOCI, Current Period, before Tax, Attributable to Parent
Reclassification from AOCI to earnings
Inventories
Inventory, Policy [Policy Text Block]
Disposal Group, Including Discontinued Operation, Other Liabilities, Current
Discontinued Operation, Other current liabilities
Asset Acquisition, Price of Acquisition, Expected
Asset Acquisition, Price of Acquisition, Expected
Contractual Obligation, Total
Contractual Obligation
Contractual obligation
Revolving Credit Facility [Member]
Discontinued Operation, Net (loss) income from discontinued operations
Disposal Group, Including Discontinued Operation, Net Income Loss Available To Common Stockholders Basic
Disposal Group, Including Discontinued Operation, Net Income Loss Available To Common Stockholders Basic
Discontinued Operation, (Loss) income from discontinued operations
Distributed (vested), weighted average fair value per share (in dollars per share)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value
Document Annual Report
Geographical [Domain]
Schedule of Reclamation and Closure Costs Activities
Tabular disclosure of accrued reclamation and closure cost liability activity.
Accrued Reclamation and Closure Cost Liability Activity [Table Text Block]
Disposal Group, Including Discontinued Operation, Assets, Noncurrent
Disposal Group, Including Discontinued Operation, Assets, Noncurrent, Total
Assets of discontinued operations
Increase (Decrease) in Accrued Salaries
Accrued payroll and related benefits
Schedule of Maturities of Long-Term Debt [Table Text Block]
Scheduled of Annual Future Payments, Including Interest
Statistical Measurement [Axis]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Comprehensive income (loss):
Stock Based Compensation
Share-Based Payment Arrangement [Policy Text Block]
Foreign Currency Contracts, Liability, Fair Value Disclosure
Foreign exchange contracts
Entity Interactive Data Current
Stock issued for incentive compensation
Stock Issued For Incentive Compensation
Stock Issued for Incentive Compensation
Current Federal Tax Expense (Benefit)
United States
United States
Deferred exploration.
hl_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDeferredExploration
Deferred exploration
Contingent Consideration Payment Fair Value
Contingent Consideration Payment Fair Value
Contingent Consideration Payment Fair Value
Gain (Loss) on Extinguishment of Debt
Gain (Loss) on Extinguishment of Debt, Total
Loss on Extinguishment
Represents the Hecla charitable foundation.
Hecla Charitable Foundation [Member]
ABO Exceed Plan Assets [Member]
ABO Exceed Plan Assets [Member]
Disposal Group, Including Discontinued Operation, Costs of Goods Sold
Discontinued Operation, Costs applicable to sales
Schedule of Price Protection on Forecasted Silver Production
Schedule of Price Protection on Forecasted Silver Production [Table Text Block]
Schedule of Price Protection on Forecasted Silver Production [Table Text Block]
Common Stock, Value, Issued
Common Stock Value
Common stock, $0.25 par value, authorized 1,250,000,000 shares; issued 2025 - 679,220,408 shares and 2024 - 640,547,918 shares
Lead 2023 Settlements for Provisional Sales [Member]
LeadTwoThousandTwentyThreeSettlementsForProvisionalSales[Member]
LeadTwoThousandTwentyThreeSettlementsForProvisionalSales[Member]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Schedule of Earnings Per Share Basic and Diluted
Inventory [Line Items]
Segment Reporting, Descriptive Information [Abstract]
Represents silver concentrate.
Silver Concentrate
Taxes Payable, Current, Total
Taxes Payable, Current
Accrued taxes
Disposal Group, Including Discontinued Operation, Gross Profit (Loss)
Discontinued Operation, Gross profit
Discontinued Operation, Gross profit
Properties, Plants, Equipment and Mineral Interests
Property, Plant, and Equipment [Policy Text Block]
Stock Issued For Incentive Compensation Unit
Stock Issued for Incentive Compensation Unit
Stock issued for incentive compensation
Risk Management Contracts
Risk Management Contracts
Risk Management Contracts [Policy Text Block]
Entity Public Float
Total liabilities
Liabilities
Total liabilities
Lucky Friday [Member]
Reporting segment classified as Lucky Friday.
Lucky Friday [Member]
Fair Value, Asset (Liability), Recurring Basis, Still Held, Unrealized Gain (Loss)
Unrealized gain (loss) on investments in equity securities
Foreign Currency Transaction Gain (Loss), before Tax, Total
Gain (Loss), Foreign Currency Transaction, before Tax
Foreign exchange (gain) loss
Information related to the Senior Notes due in 2021.
The 2021 Senior Notes [Member]
Unamortized discount/premium and issuance costs
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net, Total
Unamortized discount/premium and issuance costs
Disposal Groups, Including Discontinued Operations [Table Text Block]
Schedule of Discontinued Operations and Comprehensive Loss.
Senior Notes [Member]
Senior Notes
Other Noncash Income (Expense), Total
Other Noncash Income (Expense)
Other non-cash items, net
Deferred tax assets, valuation allowance
Balance at end of year
Deferred Tax Assets, Valuation Allowance
Balance at beginning of year
Valuation allowance
Preferred Stock, Dividend Rate, Per-Dollar-Amount
Preferred Stock, Dividend Rate, Per-Dollar-Amount (in dollars per share)
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis
Product and Service [Axis]
Reportable Segment, Aggregation before Other Operating Segment [Member]
Total Reportable Segments [Member]
Accumulated deficit
Retained Earnings (Accumulated Deficit), Total
Accumulated deficit
Retained Earnings (Accumulated Deficit)
Valuation allowance, deferred tax asset
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount
Valuation allowance, deferred tax asset, increase (decrease)
Convertible Preferred Stock [Member]
Convertible Preferred Stock [Member]
Fair Value, Inputs, Level 3 [Member]
Lead Two Thousand Twenty Six Settlements For Forecasted Sales [Member]
Lead Two Thousand Twenty Six Settlements For Forecasted Sales [Member]
Schedule of Notional Amounts of Outstanding Derivative Positions
Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block]
Percentage price of original principal amount of debt at which debt can be redeemed by the issuer, net of cash proceeds of equity offerings.
hl_DebtInstrumentRedemptionPricePercentageNetOfCashProceedsOfEquityOfferings
Debt instrument, redemption price, percentage, net of cash proceeds of equity offerings
Decrease Related to Utilization and Expiration
Decrease Related to Utilization and Expiration [Member]
Operating Expenses
Total costs and expenses
Common stock issued upon conversion of series B preffered stock
Conversion of Stock, Shares Issued
Common Stock, Dividends, Per Share, Declared
Common Stock, Dividends, Per Share, Declared (in dollars per share)
Share Price
Share Price (in dollars per share)
Fair Value, by Balance Sheet Grouping [Table]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]
Common stock issued to Alexco Resource Corp. shareholders ( in shares)
Common stock issued to Alexco Resource Corp. shareholders ( in shares)
Common stock issued to Alexco Resource Corp. shareholders ( in shares)
Stock Issued for Deferred Compensation
Stock Issued for Deferred Compensation
Stock issued for deferred compensation
Common stock issued to Alexco Resource Corp Shares
Common stock issued to Alexco Resource Corp Shares
Common stock issued to Alexco Resource Corp. shareholders (17,992,875 shares), Shares
Fair value adjustments, net
Nonoperating Gains (Losses), Total
Nonoperating Gains (Losses)
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
The Company
Rate of compensation increase: net periodic pension cost
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract]
Changes in assets and liabilities:
Schedule of Stockholders' Equity Note, Warrants or Rights
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
O2022Q4Dividends [Member]
O2022Q4Dividends [Member]
Zinc Two Thousand Six Settlements For Forecasted Sales [Member]
Zinc Two Thousand Six Settlements For Forecasted Sales [Member]
Accrued benefit asset
Pension and Other Postretirement Defined Benefit Plans Non Current Asset
Pension and other postretirement defined benefit plans non current asset
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Table]
Stock Issued During Period, Shares, New Issues
Stock Issued During Period, Shares, New Issues (in shares)
Compensation, Percentage
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Percent
Cascadia [Member]
Cascadia Member
Cascadia [Member]
Auditor Location
Lead Two Thousand Twenty Four Settlements For Provisional Sales Member
Lead Two Thousand Twenty Four Settlements For Provisional Sales Member
Lead 2024 Settlements for Provisional Sales[Member]
Other Comprehensive Net (loss) Income from discontinued Operations
Other Comprehensive Net (loss) Income from discontinued Operations
Income (loss) from discontinued operations
Comprehensive income (loss) from discontinued operations
Deferred Income Tax Liabilities, Net
Deferred tax liability
Number of warrants (in shares)
Class of Warrant or Right, Outstanding
Customer E [Member]
Customer E [Member]
Customer E [Member]
Incentive Compensation Distributed Share
Incentive Compensation Distributed Share
Incentive Compensation Distributed (in Share)
Long-Term Debt, Maturities, Repayments of Principal in Rolling Year Four
2030
Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net
Disposal Group, Including Discontinued Operation, Accounts Receivable
Discontinued Operation, Accounts receivable
Variable Rate [Domain]
Subpart F, Percentage
Subpart F, Percentage
Subpart F, Percentage
Represents the at-the-market offering.
At-the-market Offering [Member]
Customer A [Member]
Customer A [Member]
Customer A [Member]
Customer A [Member]
SERP assets to non-current investments
SERP assets to non-current investments
SERP assets to non-current investments
Deferred Tax Assets, Operating Loss Carryforwards, Domestic
Domestic net operating losses
Stock Repurchased During Period, Value
Stock Repurchased During Period, Value
Written Communications
Written Communications
Accumulated Defined Benefit Plans Adjustment, Net Transition Attributable to Parent [Member]
Adjustments for pension plane [Member]
Continuing Operations [Member]
Zinc 2025 Settlements For Forecasted Sales [Member]
Zinc2025 Settlements For Forecasted Sales Member
Zinc 2025 Settlements for Forecasted Sales [Member]
Stock Issued During Period, Shares, Issued for Services
Common stock issued to ATAC Resources Ltd. Shares
Common stock issued to ATAC Resources Ltd.
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Ending Balance
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Beginning Balance
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Total
Property, Plant, and Equipment, Accumulated Depreciation, Depletion, and Amortization
Less accumulated depreciation, depletion and amortization
Derivative Liability, Total
Derivative Liability
Metal forward contracts
Alaska
ALASKA
Derivative Liability, Statement of Financial Position [Extensible Enumeration]
Metal forward contracts
Incentive compensation distributed
Incentive compensation distributed
Incentive Compensation Distributed
Environmental and Reclamation Activities [Abstract]
Environmental and Reclamation Activities [Abstract]
Disposal Group, Including Discontinued Operation, Liabilities, Current [Abstract]
Current liabilities:
Long-Lived Asset, Class [Axis]
Disposal Group, Including Discontinued Operation, Assets
Assets of discontinued operations
Total assets
Income and Mining Taxes
Income Tax, Policy [Policy Text Block]
Subsequent Events [Text Block]
Subsequent Events
Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations, Total
Effect of exchange rates on cash
Effect of exchange rates on cash
Defined Benefit Plan, Service Cost
Service cost
Disposal Group, Including Discontinued Operation, Exploration and Pre-Development
Disposal Group, Including Discontinued Operation, Exploration and Pre-Development
Discontinued Operation, Exploration and pre-development
Greens Creek [Member]
Reporting segment classified as Greens Creek.
Greens Creek [Member]
Fair Value Hierarchy and NAV [Axis]
Statement of Financial Positions Location, Balance [Axis]
Statement of Financial Positions Location, Balance [Axis]
Defined Benefit Plan [Table]
Disposal Group, Including Discontinued Operation, Depreciation and Amortization
Discontinued Operation, Depreciation, depletion and amortization
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Plan Assets
Fair value of plan assets
Deferred Tax Assets, Gross
Total deferred tax assets
Weighted Average Number of Shares Outstanding, Diluted, Adjustment, Total
Weighted Average Number of Shares Outstanding, Diluted, Adjustment
Dilutive units
Inventory, Current [Table]
Environmental and Reclamation Activities [Table]
Environmental and Reclamation Activities [Table]
Represents the maximum percentage of CAD (Canadian dollar) denominated operating costs to be hedged in the future.
hl_MaximumAllocationOfForecastedCADDemonimatedOperatingCosts
Maximum Allocation of Forecasted CAD-demonimated Operating Costs
General Fair Value Hedge Information Minimum R Square
General Fair Value Hedge Information Minimum R Square
General FairValue Hedge Information Minimum R Square
Asset Acquisition [Table]
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]
Operating lease, liability, statement of financial position [Extensible Enumeration]
Proceeds From Sale Of Hecla Quebec, Net Of Transaction Costs
Proceeds From Sale Of Hecla Quebec, Net Of Transaction Costs
Proceeds from sale of Hecla Quebec, net of transaction costs
Payments of Stock Issuance Costs
Payments of Stock Issuance Costs
The economic value of the estimated cash flows of a mining asset beyond that asset's proven and probable reserves.
hl_MiningAssetsValueBeyondProvenAndProbableReservesVBPP
Mining Assets, Value Beyond Proven and Probable Reserves (VBPP)
Schedule of Sales Contributed by Each Segment
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]
Base Rate [Member]
Non-operating properties
Non-Operating Properties [Member]
Operating Lease, Liability, Current
Operating lease liability, current
September Two Thousand Twenty Two through December Thirty One Two Thousand Twenty Four [Member]
September Two Thousand Twenty Two through December Thirty One Two Thousand Twenty Four [Member]
September 2022 through December 31, 2024 [Member]
Stock Issued During Period, Value, Issued for Services
Common stock issued to ATAC Resources Ltd.
Option Indexed to Issuer's Equity, Type [Domain]
Concentration Risk Type [Domain]
The number of shares of stock issued during period to directors.
Stock issued to directors, shares (in shares)
Common stock issued to directors
Casa Berardi & Keno Hill [Member]
Casa Berardi & Keno Hill [Member]
Casa Berardi & Keno Hill [Member]
Auditor Firm ID
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value
Unvested, weighted average fair value per share (in dollars per share)
Unvested, weighted average fair value per share (in dollars per share)
Share Repurchase Program [Axis]
Customer [Domain]
Derivative [Line Items]
Environmental Remediation Services [Member]
Environmental Remediation Services [Member]
Environmental Remediation Services [Member]
Common stock issued to settle the acquired silver stream, Shares
Common stock issued to settle the acquired silver stream, Shares
Common stock issued to settle the acquired silver stream (34,800,990 shares), Shares
Liabilities and Equity
Total liabilities and shareholders' equity
Total liabilities and stockholders’ equity
MEXICO
Lessee, Operating Lease, Liability, to be Paid, Rolling Year Five
2030, operating lease
2031
Schedule of Sales of Products by Metal
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Table Text Block]
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent
Net income from continuing operations
Net income from continuing operations
Income (loss) from continuing operations
Net income from continuing operations
Measurement period used to value performance-based share awards. The value of the awards will be based on the ranking of the market performance of common stock relative to the performance of the common stock of a group of peer companies.
hl_ShareBasedCompensationArrangementByShareBasedPaymentAwardMeasurementPeriodUsedToValuePerformanceBasedAwards
Share-based Compensation Arrangement by Share-based Payment Award, Measurement Period Used to Value Performance-based Awards (Year)
Lessee, Operating Lease, Liability, to be Paid, Rolling Year Three
2028, operating lease
2029
Entity Voluntary Filers
The percentage of principal of the premium on the debt instrument at the time of issuance.
hl_DebtInstrumentUnamortizedPremiumPercentageOfPrincipal
Debt instrument, unamortized premium, percentage of principal
Assumed long term rate basis spread for defined benefit plan.
hl_DefinedBenefitPlanAssumedLongTermRateBasisSpread
Defined Benefit Plan Assumed Long Term Rate Basis Spread
Credit Agreement [Member]
Credit Agreement [Member]
Document Fiscal Period Focus
Derivative Asset, Noncurrent
Other non-current assets
Other non-current assets
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax
Recognized loss
Long Term Debt Maturities Repayments Effect of Discounting
Long Term Debt Maturities Repayments Effect of Discounting
Less: effect of discounting
Property Plant And Mine Development Member
Property Plant And Mine Development (Member)
Property Plant And Mine Development (Member)
Amount of increase (decrease) in benefit obligation of defined benefit plan from change in mortality rate.
hl_DefinedBenefitPlanBenefitObligationChangeInMortalityRate
Change due to mortality change
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)
Actuarial return
Finance Lease, Liability, to be Paid, Rolling Year Four
2029, finance lease
2030
Schedule of Our Major Components of Product Inventories
Schedule of Inventory, Current [Table Text Block]
Rate of compensation increase: projected benefit obligation
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase
Depreciation Amortization And Depletion
Depreciation Amortization And Depletion
Depreciation, depletion and amortization
Leverage Ratio Applicable Margin [Member]
Leverage Ratio Applicable Margin [Member]
Schedule of Domestic and Foreign Components of Income (Loss) Before Income and Mining Taxes
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]
New Credit Agreement [Member]
New Credit Agreement [Member]
Performance Shares [Member]
Exchange Rate
Forcasted Exchange Rate
Forcasted Exchange Rate
Line of Credit Facility, Current Borrowing Capacity
Letters of credit, drawn amount
Acquisitions, net
Payments to Acquire Businesses, Net of Cash Acquired
Payments to Acquire Businesses, Net of Cash Acquired, Total
Acquisition, net
Nevada Operations [Member]
Represents information about Nevada Operations.
Nevada Operations [Member]
Letters of Credit Outstanding, Amount
Letters of Credit Outstanding, Amount
Letters of credit outstanding, amount
CANADA
Canada
Sale of Stock [Axis]
Gold Two Thousand Twenty Four Settlements For Provisional Sales [Member]
Gold Two Thousand Twenty Four Settlements For Provisional Sales Member
Gold 2024 Settlements For Provisional Sales [Member]
Common Stock Issued for Warrant Conversion Value
Common Stock Issued for Warrant Conversion Value
Common stock issued for warrant conversion
NETHERLANDS
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation
Net increase (decrease) in cash and cash equivalents and restricted cash and cash equivalents
Entity Current Reporting Status
Capitalized drilling costs.
hl_CapitalizedDrillingCosts
Capitalized Drilling Costs
Assumptions and Use of Estimates
Use of Estimates, Policy [Policy Text Block]
Disposal Group, Including Discontinued Operation, Operating Expense
Discontinued Operation, Other operating expense, net
Purchase Commitment, Excluding Long-Term Commitment [Axis]
Fair Value, Inputs, Level 1 [Member]
Class of Stock [Domain]
Responsibility under CERCLA for environmental remediation and past costs the EPA has incurred related to the Carpenter Snow Creek Superfund Site, Cascade County, Montana.
Carpenter Snow Creek Superfund Site, Cascade County, Montana [Member]
Expected rate of return on plan assets
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-Term Rate of Return on Plan Assets
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets
Reconciliation of Sales [Member]
Reconciliation of Sales [Member]
Reconciliation of Sales [Member]
QUEBEC
Quebec
Revenue from Contract with Customer Benchmark [Member]
Revenue from Contract with Customer Benchmark [Member]
Pre-commencement Tender Offer
Pre-commencement Tender Offer
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Accumulated Benefit Obligation
Accumulated benefit obligation
Realized Investment Gains (Losses)
Realized Investment Gains (Losses), Total
Realized Investment Gains
Investment Type [Axis]
Investment
Financial Instrument [Axis]
Disposal Group, Including Discontinued Operation, Property, Plant, and Equipment
Discontinued Operation, Property, plants, equipment and mine development, net
Assets, Fair Value Disclosure, Total
Assets, Fair Value Disclosure
Total assets
Document Transition Report
KOREA
KOREA, DEMOCRATIC PEOPLE'S REPUBLIC OF
Liability Class [Axis]
Represents precious metals concentrate.
Precious Metals Concentrate
Commitments and Contingencies Disclosure [Abstract]
Defined Benefit Plan, Expected Return (Loss) on Plan Assets
Expected return on plan assets
Subsequent Event [Line Items]
Long-Term Debt, Maturities, Repayments of Principal in Rolling Year Three
2029
Increase (Decrease) in Inventories, Total
Increase (Decrease) in Inventories
Inventories
Cash Provided by (Used in) Financing Activity, Continuing Operation
Cash Provided by (Used in) Financing Activity, Continuing Operation, Total
Cash (used in) provided by financing activities of continuing operations
Class of Warrant or Right [Axis]
Deferred Cash Consideration
Deferred Cash Consideration
Deferred cash consideration
Provincial taxes, Percentage
Effective Income Tax Rate Reconciliation Provincial Taxes Percentage
Effective Income Tax Rate Reconciliation Provincial Taxes Percentage
Represents the 2024 settlements for forecasted sales of gold.
Gold 2024 Settlements for Forecasted Sales [Member]
Gold 2024 Settlements for Forecasted Sales [Member]
Liabilities, Current [Abstract]
Current liabilities:
Deferred Tax Assets, Tax Credit Carryforwards, Foreign
Foreign tax credit carryforward
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay
Operating properties
Operating Properties [Member]
Decrease related to release of valuation allowance.
Decrease Related to Release of Valuation Allowance [Member]
Common Stock Issued for Warrant Exercises Value
Common Stock Issued for Warrant Exercises Value
Common Stock Issued for Warrant Exercises Value
Number of series B preffered stock coverted
Conversion of Stock, Shares Converted
The costs related to goods produced and sold during the reporting period, before depreciation, depletion, and amortization.
Cost of sales and other direct production costs
Costs applicable to sales
Lead 2024 Settlements for Forecasted Sales [Member]
Lead 2024 Settlements for Forecasted Sales
Lead 2024 Settlements for Forecasted Sales [Member]
Schedule of Change in Asset Retirement Obligation
Schedule of Change in Asset Retirement Obligation [Table Text Block]
Cash provided by operating activities of discontinued operations
Cash Provided by (Used in) Operating Activity, Discontinued Operation
Cash provided by operating activities of discontinued operations
Common Stock
Common Stock [Member]
Retirement Plan Type [Axis]
Derivative Instruments and Hedging Activities Disclosure [Text Block]
Derivative Instruments
Derivative Instruments
Represents information related to silver contracts.
Silver Contracts [Member]
Silver [Member]
Preferred stock, conversion price.
hl_PreferredStockConversionPrice
Preferred Stock Conversion Price (in dollars per share)
O2023Q4Dividends [Member]
O2023Q4Dividends [Member]
Proceeds from Lines of Credit, Total
Proceeds from Lines of Credit
Proceeds from lines of credit
Investments
Investment [Text Block]
Credit Facility [Domain]
Cost, Depreciation, Amortization and Depletion, Total
Cost, Depreciation, Amortization and Depletion
Depreciation, depletion and amortization
State taxes, net of federal tax benefit, Percentage
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent
Statistical Measurement [Domain]
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent
Minimum Effective Tax Rate
Increase (Decrease) in Inventories and Other Operating Assets
Product inventory change
Information on lease commitments.
Lease Commitments [Member]
Represents the forward and put option contracts.
Forward and Put Option Contracts [Member]
Environmental Remediation Contingency [Axis]
Other expense:
Nonoperating Income (Expense) [Abstract]
Sales and Input Tax Credits [Member]
Sales and Input Tax Credits [Member]
Sales and Input Tax Credits [Member]
Notes Payable, Total
Notes Payable
Notes Payable, Total
The maximum number of shares to be sold under the equity distribution agreement.
hl_EquityDistributionAgreementMaximumNumberOfSharesToBeSold
Equity Distribution Agreement, Maximum Number of Shares to be Sold (in shares)
Stock Issued During Period, Shares, Employee Benefit Plan
Stock Issued During Period, Shares, Employee Benefit Plan
Common stock issued as incentive compensation
Equity, Attributable to Parent [Abstract]
STOCKHOLDERS' EQUITY
Weighted Average Number of Shares Outstanding, Basic, Total
Weighted Average Number of Shares Outstanding, Basic
Weighted average number of common shares outstanding - basic
Basic weighted average common shares
Income (Loss) from Continuing Operations, Per Diluted Share
Continuing operations
Income from continuing operations after preferred dividends
Property, Plant, and Equipment [Abstract]
Inventory, Net [Abstract]
Inventories:
Mutual Funds
Mutual Funds [Member]
Environmental and Reclamation Activities
The entire disclosure for environmental and reclamation activities.
Environmental and Reclamation Activities [Text Block]
Gold 2025 Settlements For Forecasted Sales [Member]
Gold2025 Settlements For Forecasted Sales Member
Gold 2025 Settlements For Forecasted Sales [Member]
Discontinued Operation of Other Expenses
Discontinued Operation of Other Expenses
Discontinued Operation Other (expense) income:
Operating Lease, Expense
Operating lease expense
Accounts Payable and Accrued Liabilities, Current
Accounts payable and accrued liabilities
Accounts Payable and Accrued Liabilities, Current, Total
Entity Central Index Key
CIK
Schedule of Potential Per Share Dividend Amounts Quarterly Price Levels
Tabular disclosure of the potential per share dividend amounts at different quarterly average realized price levels.
Schedule of Potential Per Share Dividend Amounts Quarterly Price Levels [Table Text Block]
Zinc and Lead Contract 2023 [Member]
Zinc and Lead Contract Two Thousand Twenty Three [Member]
Zinc and Lead Contract Two Thousand Twenty Three [Member]
Line of Credit Facility [Table]
Other Liabilities, Current
Other current liabilities
Consolidation Items [Axis]
Current Fiscal Year End Date
Derivative [Table]
Class of Warrant or Right [Domain]
Represents emerging markets debt.
Emerging Market Debt [Member]
Information pertaining to the Director's Stock Plan.
Directors Stock Plan [Member]
Republic
Republic [Member]
Consideration Closing Date
Consideration Closing Date
Consideration closing date
Summary of Trade Accounts Receivable
Trade Accounts Receivable [Table Text Block]
Trade Accounts Receivable [Table Text Block]
Common Stock Issued to Directors
Common Stock Issued to Directors
Common stock issued to directors
Environmental Remediation Site [Axis]
Fair Value, Inputs, Level 2 [Member]
Intersegment Sales [Member]
Intersegment Sales [Member]
Intersegment Sales [Member]
Schedule of indication of whether pension plans had accumulated benefit obligations (ABO) in excess of plan assets, or plan assets exceeded ABO
Schedule of Net Funded Status [Table Text Block]
Unrealized Gain (Loss) on Investments
Unrealized gain (losses) on investment
Unrealized Losses on Investment
Cash Provided by (Used in) Operating Activity, Continuing Operation
Cash Provided by (Used in) Operating Activity, Continuing Operation, Total
Cash provided by operating activities of continuing operations
Ending balance at December 31
Beginning Balance at January 1
Asset Retirement Obligation, Total
Asset Retirement Obligation
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation
Cash provided by operating activities
Net cash provided by operating activities
Entity Incorporation, State or Country Code
Actual Costs of Work Performed
Actual Costs of Work Performed
Actual Costs of Work Performed
Non-current derivatitive liabilities
Derivative Liability, Noncurrent
Other non-current assets, liability position
Derivatives liabilities
Common Stock Issued for Warrant Exercises
Common Stock Issued for Warrant Exercises
Common Stock Issued for Warrant Exercises
Lucky Friday plan [Member]
Lucky Friday plan [Member]
Lucky Friday plan
Earnings Per Share, Diluted
Diluted net income (loss) per common share after preferred dividends
Diluted net income (loss) per common share after preferred dividends
Diluted (loss) earnings per common share after preferred dividends
Compensation, Amount
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Amount
Compensation, Amount
Sale of Stock, Number of Shares Issued in Transaction
Equity consideration common shares
Dividends, Total
Dividends
Common stock and Series B Preferred stock dividends declared
Common stock ($0.00625 per share) and Series B Preferred Stock ($0.875 per share) dividends declared
Defined Contribution Plan Disclosure [Line Items]
Preferred Stock, Par or Stated Value Per Share
Series B preferred stock, par value (in dollars per share)
Operating Lease, Weighted Average Discount Rate, Percent
Operating lease, weighted average discount rate, percent
Net loss
Net income (loss)
Net income
Conversion of warrants
Warrants and Rights Outstanding
Related to the segment operating in Quebec.
Hecla Quebec. Inc [Member]
Hecla Quebec Inc. [Member]
Option Indexed to Issuer's Equity, Type [Axis]
Preferred Stock, Redemption Price Per Share
Preferred Stock, Redemption Price Per Share (in dollars per share)
Increase (Decrease) in Other Operating Assets, Total
Increase (Decrease) in Other Operating Assets
Other current and non-current assets
Commitments and Contingencies Disclosure [Text Block]
Commitments, Contingencies, and Obligations
Disposal Group, Including Discontinued Operation, Consideration
Amount of consideration receivable
Long-Lived Asset, Class [Domain]
Restricted Cash and Cash Equivalents, Noncurrent, Total
Restricted Cash and Cash Equivalent, Noncurrent
Restricted cash and cash equivalents
Non-current restricted cash and cash equivalents
Debt Instrument, Unamortized Premium, Total
Debt Instrument, Unamortized Premium
Debt instrument, unamortized premium
Stock Repurchase Program Number of Shares Authorized to be Repurchased
Stock Repurchase Program, Number of Shares Authorized to be Repurchased (in shares)
Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member]
Deferred Tax Assets, Other
Miscellaneous
Silver 2025 Settlements For Forecasted Sales [Member]
Silver2025 Settlements For Forecasted Sales Member
Silver 2025 Settlements For Forecasted Sales [Member]
Common stock issued to stockholders
Common stock issued to Alexco Resource Corp. stockholders
Common stock issued to stockholders
Common stock issued to ATAC Resources Ltd. stockholders
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration]
Other current assets
Other comprehensive income
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent
Total change in accumulated other comprehensive income (loss), net
Computed "statutory" benefit (provision), Amount
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount
Income and mining tax (provision) / benefit at statutory rate, Amount
Operating loss carryforwards, Indefinite period
Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws that has an indefinite carryforward period.
hl_OperatingLossCarryforwardsIndefiniteCarryforwardPeriod
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Comprehensive loss
Comprehensive income (loss)
Long-Term Debt, Maturities, Repayments of Principal in Rolling after Year Five
Thereafter
IDAHO
Idaho
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue [Table Text Block]
Schedule Of Metal Sales Information By Geographic Area Based on the Location of Smelters and Metal Traders
Other Noncurrent Asset [Member]
Other Noncurrent Asset [Member]
Other non-current assets [Member]
Other non-current assets
Income Tax Jurisdiction [Domain]
Stock Issued During Period Shares Compensation To Interim CEO
Stock Issued During Period Shares Compensation To Interim CEO
Stock Issued During Period Shares Compensation To Interim CEO
Zinc is a chemical element with the periodic table symbol Zn and atomic number 30.
Zinc [Member]
Preferred Stock, Liquidation Preference, Value
Series B preferred stock, liquidation preference
Effective Income Tax Rate Reconciliation Provincial Currency Remeasurement Amount
Effective Income Tax Rate Reconciliation Provincial Currency Remeasurement Amount
Provincial - Currency remeasurement, Amount
Measurement Frequency [Domain]
Scenario [Domain]
Allowance for doubtful accounts
Accounts Receivable, Allowance for Credit Loss
Accounts Receivable, Allowance for Credit Loss, Ending Balance
Accounts Receivable, Allowance for Credit Loss, Beginning Balance
Equity Components [Axis]
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract]
Investing activities:
Statement of Cash Flows [Abstract]
Satisfy Withholding Obligations
Satisfy Withholding Obligations [Member]
Fair Value Hierarchy and NAV [Domain]
Income Tax Disclosure [Abstract]
Line of Credit Facility, Commitment Fee Percentage
Line of credit facility, commitment fee percentage
Revenue Recognition and Trade Accounts Receivable
Revenue [Policy Text Block]
Schedule of Investments [Line Items]
Schedule of Investments [Line Items]
Represents the estimated future response cost that the EPA may ultimately incur related to a site.
hl_EstimatedFutureResponseCost
Estimated future response cost
Deferred cash consideration
Cash and Cash Equivalents, at Carrying Value, Including Discontinued Operations
Cash and Cash Equivalents, at Carrying Value, Including Discontinued Operations, Total
Represents the quarterly dividends.
Quarterly Dividends [Member]
Changes in fair value of derivative contracts designated as hedge transactions [Member]
Changes in fair value of derivative contracts designated as hedge transactions [Member]
Changes in fair value of derivative contracts designated as hedge transactions [Member]
Unrealized Gain (Loss) on Derivatives
Unrealized Gain (Loss) on Derivatives
Preferred Stock, Liquidation Preference Per Share
Preferred Stock, Liquidation Preference Per Share (in dollars per share)
Deferred Tax Liabilities, Other
Miscellaneous
Fair Value Measurement
Fair Value Disclosures [Text Block]
Fair Value Measurement
All Other Sites
All Other Sites [Member]
Finance leases
Finance lease liability, noncurrent
Finance Lease, Liability, Noncurrent
Depreciation, Depletion and Amortization, Total
Depreciation, Depletion and Amortization
Depreciation, Depletion and Amortization, Total
Depreciation, depletion and amortization
Lead Two Thousand Twenty Seven Settlements For Forecasted Sales [Member]
Lead Two Thousand Twenty Seven Settlements For Forecasted Sales [Member]
Lead 2027 Settlements For Forecasted Sales [Member]
Pre-commencement Issuer Tender Offer
Pre-commencement Issuer Tender Offer
Defined Benefit Plan, Plan Assets, Category [Axis]
Canceled, weighted average fair value per share (in dollars per share)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Canceled, Weighted Average Grants Date Fair Value
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Canceled, Weighted Average Grants Date Fair Value
Equity Securities, FV-NI, Total
Equity Securities, FV-NI
Equity securities
Long-Term Investments, Total
Long-Term Investments
Non-current investments
Preferred Stock, Shares Authorized
Preferred stock, shares authorized (in shares)
Gold [Member]
Gold
Represents the information pertaining to Series 2018-A Senior Notes.
Series 2018-A Senior Notes [Member]
Other Noncurrent Liability [Member]
Other Noncurrent Liability [Member]
Other non-current liabilities
Soliciting Material
Soliciting Material
Reclassification from AOCI to fair value adjustments
Other Comprehensive Income (Loss), Financial Liability, Fair Value Option, Reclassification Adjustment from AOCI for Derecognition, after Tax
Line of Credit Facility [Abstract]
Derivative Contract [Domain]
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Changes in fair value of derivative contracts designated as hedge transactions
Other operating expense
Other Cost and Expense, Operating
Other direct production costs
Class of Stock [Axis]
Warrants exerciseable
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Amortization of prior service benefit
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)
Lessee, Operating Lease, Liability, to be Paid, Rolling Year Four
2029, operating lease
2030
Counterparty Name [Axis]
Transfer Pricing Allocation
Transfer Pricing Allocation
Transfer Pricing Allocation, Amount
Keno Hill [Member]
Keno Hill [Member]
Keno Hill
Disposal Group, Including Discontinued Operation, Assets [Abstract]
ASSETS
Income Tax Paid, by Individual Jurisdiction [Table]
Mining and other taxes, Amount
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to mining and other taxes.
hl_EffectiveIncomeTaxRateReconciliationMiningAndOtherTaxesAmount
Mining taxes, Amount
Represents the information pertaining to zinc concentrate.
Zinc Concentrate
Accumulated Other Comprehensive Income (Loss), net
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss), Net
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)
Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position, Location
Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position, Location [Table Text Block]
Increase (Decrease) in Accounts Payable and Accrued Liabilities, Total
Increase (Decrease) in Accounts Payable and Accrued Liabilities
Accounts payable, accrued and other current liabilities
Hedge Funds [Member]
Cash Equivalent, Certificate of Deposit, Carrying Value
Certificates of deposit and other deposits
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)
Finance Lease, Liability, to be Paid, Maturity [Table Text Block]
Schedule of Annual Maturities of Finance Lease Commitments, Including Interest
Debt Instrument, Redemption Price, Percentage
Debt instrument, redemption price, percentage
Inventories: Concentrates, dore, and stockpiled ore
Inventory, Net
Inventory, Net, Total
Product inventories
Accumulated other comprehensive loss
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax, Total
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax
Disposal Group, Including Discontinued Operation, Cash and Cash Equivalents
Disposal Group, Including Discontinued Operation, Cash
Discontinued Operation, Cash and cash equivalents
Derivative, Net Liability Position, Aggregate Fair Value
Derivative net liability position fair value
Common stock issued to Alexco Resource Corp. shareholders
Common stock issued to Alexco Resource Corp. shareholders
Common stock issued to Alexco Resource Corp. stockholders
Foreign Exchange Contract [Member]
Interest-Bearing Deposits [Member]
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]
Finance lease, right-of-use asset, statement of financial position [Extensible Enumeration]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract]
Concentration Risk Benchmark [Domain]
Common stock repurchase program [member
Common Stock Repurchase Program [Member]
Income Tax Paid, by Individual Jurisdiction [Line Items]
Stock Issued During Period, Shares, Treasury Stock Reissued
Stock Issued During Period, Shares, Treasury Stock Reissued (in shares)
Deferred Tax Asset [Domain]
Accrued Liability
Accrued Liabilities, Current
Accrued Liabilities, Current, Total
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number, Ending Balance
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number, Beginning Balance
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance (in shares)
Customer [Axis]
Environmental Loss Contingency, Noncurrent, Statement of Financial Position [Extensible Enumeration]
Hedging Designation [Axis]
Hedging Designation [Domain]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Dividends, Common Stock, Total
Dividends, Common Stock
Dividends, Common Stock, Total
Document Type
Document Type
The entity Korea Zinc.
Korea Zinc [Member]
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, after Tax
Unrealized (loss) gain and amortization of prior service on pension plans
Defined Benefit Plan Disclosure [Line Items]
Cash and Cash Equivalents
Cash and Cash Equivalents, Policy [Policy Text Block]
Common shares and royalty asset received for sale of Hecla Quebec
Common Shares And Royalty Asset Received For Sale Of Hecla Quebec
Common Shares And Royalty Asset Received For Sale Of Hecla Quebec
Real Estate [Member]
Operating activities:
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract]
Disposal Group, Including Discontinued Operations [Line Items]
Capital additions (excluding non-cash items)
Payments to Acquire Productive Assets
Payments to Acquire Productive Assets, Total
Mining properties, including asset retirement obligations
Mining Properties Including Asset Retirement Obligations
Mining Properties Including Asset Retirement Obligations [Member]
Long-Term Debt, Maturities, Repayments of Principal in Next Rolling 12 Months
2027
Change due to discount rate change
Amount of increase (decrease) in benefit obligation of defined benefit plan from the change of the discount rate of the existing plan.
hl_DefinedBenefitPlanBenefitObligationIncreaseDecreaseForDiscountRateChange
Change due to discount rate change
Subsequent Event [Member]
Subsequent Event
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]
Income from operations
Income (loss) from operations
Operating Income (Loss)
Income from operations
Total cost of sales
Amount of noncash adjustments to fair values.
hl_FairValueAdjustmentsNet
Fair value adjustments, net
Fair value adjustments, net
Income Tax [Table]
Income Tax [Table]
Changes in obligations due to changes in reclamation plans
Asset Retirement Obligation, Revision of Estimate
Measurement Input, Risk Free Interest Rate [Member]
Internal Credit Assessment [Axis]
Common stock issued to pension plans
Stock Issued During Period, Value, Employee Benefit Plan
Line Of Credit Facility Principal Payment Including Interest
Line Of Credit Facility Principal Payment Including Interest
Line of credit facility total payment including interest
Effective Income Tax Rate Reconciliation Currency Remeasurement, Amount
Effective Income Tax Rate Reconciliation Currency Remeasurement, Amount
Currency remeasurement, Amount
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Schedule of Accumulated other comprehensive income (loss), net
Total Metal [Member]
Total Metal [Member]
Total Metal [Member]
Metal sales
Accumulated Distributions in Excess of Net Income [Member]
Accumulated Distributions in Excess of Net Income [Member]
Schedule of Sales from Continuing Operations to Significant Metals Customers
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Customer, Extent of Reliance [Table Text Block]
Segment Reporting [Table]
Asset Class [Domain]
Zinc Two Thousand Twenty Six Settlements For Provisional Sales [Member]
Zinc Two Thousand Twenty Six Settlements For Provisional Sales [Member]
Zinc 2026 Settlements for Provisional Sales [Member]
Entity File Number
Entity File Number
Defined Benefit Plan, Amortization of Gain (Loss)
Amortization of net loss (gain)
hl_DebtInstrumentEffectiveAnnualYield
The effective annual yield of the debt instrument.
Debt instrument, effective annual yield
Represents the information pertaining to Klondex Mines Ltd.
Klondex Mines Ltd [Member]
Klondex Mines Ltd
Common stock issued to settle the acquired silver stream
Common stock issued to settle the acquired silver stream
Common stock issued to settle the acquired silver stream
Finance and operating leases
Present value of lessee's discounted obligation for lease payments from finance and operating leases, classified as current.
Finance leases
Finance leases
Income Tax Jurisdiction, Domestic Federal [Member]
United States
Notice Of Assessment [Member]
Notice Of Assessment [Member]
Notice Of Assessment [Member]
Retirement Plan Type [Domain]
Information related to the Troy Mine.
Troy Mine [Member]
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]
Schedule of Annual Maturities of Undiscounted Operating Lease Payments
Operating Activities [Domain]
Location, Statement of Income, Balance [Axis]
Basis of Preparation of Financial Statements
Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block]
Asset Retirement Obligation, Accretion Expense
Accretion expense
Accumulated Deficit
Retained Earnings [Member]
Environmental Services [Member]
Environmental Services [Member]
Commitments relating to performance obligations.
Performance Obligation Commitments [Member]
Accrued interest
Interest Payable, Current
Derivative Instrument Detail [Abstract]
Large cap U.S. equities [Member]
Large Cap US Equity
Large Cap US Equity [Member]
Common Stock Issued to Interim CEO
Common Stock Issued to Interim CEO
Common stock issued to interim CEO
Entity Registrant Name
Registrant Name
Current Income Tax Expense (Benefit), Total
Current Income Tax Expense (Benefit)
Total current income and mining tax provision
Accruals For Estimated Costs
Accruals for estimated costs
Accruals For Estimated Costs
Purchase Orders and Commitment [Member]
Information on purchase orders and commitments.
Rate differential on foreign earnings, Amount
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount
Rate differential on foreign earnings, Amount
Accounting Policies [Abstract]
Write-down of property, plant and equipment
Depreciation
Depreciation, Total
Reduction in Futute Deferred Cash Payments
Reduction in Futute Deferred Cash Payments, Rate
Reduction in Futute Deferred Cash Payments, Rate
Reclamation and Remediation Costs (Asset Retirement Obligations)
Reclamation and remediation cost.
Reclamation and Remediation Cost [Policy Text Block]
Defined Benefit Plan, Plan Assets, Contributions by Employer
Defined Contribution Plan, Employer Discretionary Contribution Amount
Other Operating Segment [Member]
Other [Member]
Land
Land [Member]
Shares Acquired, Average Cost Per Share
Treasury Stock Acquired, Average Cost Per Share (in dollars per share)
Derivative, Gain, Statement of Income or Comprehensive Income [Extensible Enumeration]
Effective Income Tax Rate Reconciliation, NCTI, Percent
Global intangible low-taxed income, Percentage
Entity Address, Address Line One
Stock Issued for Deferred Compensation, Unit
Stock Issued for Deferred Compensation, Unit
Other Receivables
Receivables from provisional concentrate sales
Other, net
Sale of Hecla Quebec Inc. and Discontinued Operations
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]
Derivative, Number of Instruments Held, Total
Derivative, Number of Instruments Held
Derivative, Number of Instruments Held, Total
UNITED STATES
United States
Agreement.
Agreement [Axis]
Defined Benefit Plan, Expected Future Benefit Payment, Year Five
2030
Number of distributed shares
Treasury Stock, Shares, Retired
Proceeds from Issuance or Sale of Equity
Proceeds from Issuance or Sale of Equity
Proceeds from Issuance or Sale of Equity, Total
Assets, Current
Total current assets
Total current assets
Lessee, Operating Lease, Liability, to be Paid, Next Rolling 12 Months
2026, operating lease
2027
Canada
Income Tax Jurisdiction, Foreign [Member]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)
Net periodic pension (benefit) cost
Fair Value, Recurring and Nonrecurring [Table]
Mineral interests
Mineral interests [member
Mineral Interests [Member]
Effective Income Tax Rate Reconciliation Provincial Taxes Amount
Effective Income Tax Rate Reconciliation Provincial Taxes Amount
Provincial taxes, Amount
Percentage depletion, Percentage
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Depletion, Percent
Stock Issued During Period Shares, Restricted stock units and performance stock units distributed
Stock Issued During Period Shares, Restricted stock units and performance stock units distributed
Restricted stock units and performance stock units distributed (1,789,042 shares) ,Shares
Total number of common shares of an entity that have been sold or granted to shareholders (excluding those common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.
Common stock, shares issued (in shares)
Common stock, shares issued (in shares)
Environmental and Reclamation Activities [Line Items]
Environmental and Reclamation Activities [Line Items]
Writedown Of Plant And Equipment
Writedown of plant and equipment.
Writedown of property, plant and equipment
Write-down of property, plant and equipment
Basic and Diluted Income (Loss) Per Common Share
Earnings Per Share, Policy [Policy Text Block]
Current State and Local Tax Expense (Benefit)
State and state mining taxes
State income and state mining taxes
Segments [Axis]
Disposal Group, Including Discontinued Operation,Foreign Currency Transaction Gain Loss Realized
Disposal Group, Including Discontinued Operation,Foreign Currency Transaction Gain Loss Realized
Discontinued Operation, Net foreign exchange loss
Income Tax Authority, Name [Domain]
Loss Contingencies [Line Items]
Supplemental Cash Flow Information [Abstract]
Supplemental disclosure of cash flow information:
The amount of required settlement obligation under the agreements at termination.
hl_DerivativeFairValueObligationsUnderTheAgreements
Derivative, Fair Value, Obligations Under the Agreements
Long-Term Debt, Maturities, Repayments of Principal in Rolling Year Five
2030, finance lease
2031
Deferred Income Tax Expense (Benefit)
Deferred Income Tax Expense (Benefit), Total
Total deferred income and mining tax provision
Entity Small Business
At the market Offering [Member]
At the market Offering.
Casa Berardi and Keno Hill [Member]
Casa Berardi and Keno Hill [Member]
Casa Berardi and Keno Hill [Member]
Other Commitments [Domain]
Pension plans
Pension Plan [Member]
Asset Acquisition, Amount
Asset Acquisition, Indemnification Asset, Amount
Increase (Decrease) in Property and Other Taxes Payable
Accrued taxes
The minimum average realized silver price per ounce that must be met for the silver-price-linked component of dividends to be declared.
hl_AverageRealizedSilverPriceMinimumDividendThreshold
Average Realized Silver Price, Minimum Dividend, Threshold (in dollars per share)
Customer D [Member]
Customer D [Member]
Customer D [Member]
Metal Sales [Member]
Metal Sales [Member]
Metal Sales [Member]
Net (loss) income from discontinued operations, net of taxes
Net (loss) income from discontinued operations, net of taxes
Income (loss) from discontinued operations, net of income and mining taxes
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value
Forfeited, weighted average fair value per share (in dollars per share)
Lease Obligation Incurred
Addition of finance lease obligations and right-of-use assets
Long-Term Debt, Type [Axis]
Retirement Plan Name [Axis]
Summary of Dividends Declared Pursuant to Dividend Policy
Schedule of Dividends Payable [Table Text Block]
Trade
Accounts Receivable, after Allowance for Credit Loss, Current, Total
Accounts Receivable, after Allowance for Credit Loss, Current
Cash to be received
Consolidation Items [Domain]
Disposal Group, Including Discontinued Operation, Other Income
Discontinued Operations, Other income
Stock Based Compensation Distributed
Stock Based Compensation Distributed
Stock-based compensation distributed
Customer G [Member]
Customer G [Member]
Customer G [Member]
Other Assets
Total assets of reportable segments
Accrued payroll and related benefits
Employee-related Liabilities, Current, Total
Employee-related Liabilities, Current
Derivative, Nonmonetary Notional Amount, Mass
Production Protected
Derivative, Nonmonetary Notional Amount, Mass
Schedule of Long-Term Debt Instruments [Table Text Block]
Schedule of Long-term Debt
Orezone Gold Corporation [Member]
Orezone Gold Corporation [Member]
Orezone Gold Corporation [Member]
Tax credit carryforward, limitations on use
Tax Credit Carryforward, Limitations on Use
Redemption of Debt
Redemption of Debt
Redemption of debt
Amount of asset (liability), recognized in statement of financial position, including accumulated other comprehensive income before tax, for defined benefit pension and other postretirement plans.
hl_DefinedBenefitPlanAmountsRecognizedInBalanceSheetIncludingAccumulatedOtherComprehensiveIncomeBeforeTax
Net amount recognized
Defined Benefit Plan, Plan Assets, Contributions by Employer
Defined Benefit Plan, Plan Assets, Contributions by Employer
Employer contributions
Investment policy allocation
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage
Represents the underwriting discount on senior notes.
hl_UnderwritingDiscountOnSeniorNotes
Underwriting discount on senior notes
Other Commitments [Axis]
Earnings Per Share [Abstract]
Net income per common share
Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award
Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block]
Price Risk Cash Flow Hedge Unrealized Gain (Loss) to be Reclassified During Next 12 Months
Price Risk Cash Flow Hedge Unrealized Gain (Loss) to be Reclassified During Next 12 Months
Provision for income taxes
Other Comprehensive Income (Loss), before Reclassifications, Provision for income taxes
Other comprehensive income (Loss), before reclassifications, provision for income taxes
Investments
Investment, Policy [Policy Text Block]
Derivative Asset, Total
Derivative Asset
Metal forward contracts
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent, Total
Change, Tax
Other Operating Income (Expense), Net
Other operating (income) expense
Other operating expense (income), net
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months
Disposal Group, Income of discontinued operations
Disposal Group, Income of discontinued operations
Disposal Group, Income of discontinued operations
Discontinued Operation, Income of discontinued operations
Payment of Interest
Debt Instrument, Periodic Payment, Interest
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)
Actual return on plan assets
Defined Benefit Plan, Plan Assets, Benefits Paid
Benefits paid
Proceeds from Warrant Exercises
Common stock issued for warrant exercises
Represents care and maintenance expenses.
Care and maintenance costs
Care and maintenance costs
Effective Income Tax Rate Reconciliation [Line Items]
The costs of extracting metal from ore.
hl_SmelterAndRefiningCharges
Less: Smelter and refining charges
Entity Well-known Seasoned Issuer
Forcasted Cash Operating Expenditures
Forcasted Cash Operating Expenditures
Cash Operating Expenditure
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Long-Lived Asset [Table Text Block]
Schedule Of Long-Lived Assets by Geographic Area
Total amount of realized gain (loss) and unrealized gain (loss) recognized in income from asset (liability) measured at fair value on recurring basis using unobservable input (level 3) and still held.
Total fair value adjustments, net
Total fair value adjustments, net
Zinc Two Thousand Twenty Six Settlements For Forecasted Sales [Member]
Zinc Two Thousand Twenty Six Settlements For Forecasted Sales [Member]
Derivative Liability, Subject to Master Netting Arrangement, before Offset of Collateral, Total
Derivative Liability, Subject to Master Netting Arrangement, before Offset of Collateral
Derivative Liability, Fair Value, Amount Not Offset Against Collateral, Total
Plan Name [Axis]
Deferred tax liabilities:
Deferred Tax Liabilities, Net [Abstract]
Subsequent Event Type [Axis]
Equity [Abstract]
Disposal Group, Including Discontinued Operation, Accrued Income Tax Payable
Discontinued Operation, Accrued taxes
Product and Service [Domain]
Share-Based Payment Arrangement [Member]
Equity [Text Block]
Stockholders' Equity
Measurement Frequency [Axis]
Plan Assets Exceed ABO [Member]
Plan Assets Exceed ABO [Member]
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]
Financing activities:
Fair Value by Liability Class [Domain]
Finance Lease, Liability, to be Paid, Rolling Year Three
2028, finance lease
2029
Finance Lease, Liability, to be Paid, Rolling Year Two
2027, finance lease
2028
Materials, Supplies, and Other
Materials and supplies
Debt Instrument, Repaid, Principal
Debt instrument total payment
Properties, Plants, Equipment and Mine Development Additions in Accounts Payable and Accrued Liabilities
Properties, Plants, Equipment and Mine Development Additions in Accounts Payable and Accrued Liabilities
Properties, plants, equipment and mine development additions in accounts payable and accrued liabilities
Zinc Contract 2022 [Member]
Zinc Contract 2022 [Member]
Zinc Contract 2022 [Member]
Mexican Tax Authority [Member]
Disposal Group, Including Discontinued Operation, Other Assets, Noncurrent
Discontinued Operation, Other non-current assets
Derivative Assets (Liabilities), at Fair Value, Net, Total
Derivative Assets (Liabilities), at Fair Value, Net
Net asset (liability)
Entity Tax Identification Number
Exploration and pre-development
Represents the amount of exploration and pre-development costs recorded during the period related to mining activities.
Exploration and pre-development
Treasury Stock, Common, Shares
Treasury stock common Share
Customer B [Member]
Customer B [Member]
Customer B [Member]
Trade Accounts Receivable [Member]
Accounts Receivable [Member]
Stock-based compensation units distributed
Stock-based compensation units distributed
Stock Based Compensation Units Distributed
Disposal Group, Including Discontinued Operation, Non operating Gains Losses
Disposal Group, Including Discontinued Operation, Non operating Gains Losses
Discontinued Operation, Fair value adjustments, net
Business interruption insurance proceeds received
Proceeds from Business Interruption Insurance Policy
Proceeds from Business Interruption Insurance Policy
Derivative Instrument [Axis]
Equity Component [Domain]
Operating Activities [Axis]
Common stock issued under ATM program
Common stock issued under ATM program
Common stock issued under ATM program
Derivative [Member]
Entity Address, City or Town
Debt Instrument Partially Redeemed Amount
Debt Instrument Partially Redeemed Amount
Partially redeemed amount
Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation (in shares)
Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation
Finance Lease, Right-of-Use Asset, before Accumulated Amortization
Finance Lease, Right-of-Use Asset, before Accumulated Amortization
Business Combination [Axis]
Measurement Input Type [Domain]
Long-Term Debt, Maturity, Year One
2026
Environmental Expense and Liabilities
Provision for reclamation and closure costs
Environmental Expense and Liabilities, Total
Income Tax Paid, after Refund Received
Income and mining taxes, net of refunds
Total
Disposal Group, Including Discontinued Operation, Interest Expense
Discontinued Operation, Interest expense
Discontinued Operation, Interest expense
Segments [Domain]
The inflation rate uses to valuing asset retirement obligations asset and liability.
hl_InflationRateAssetRetirementObligation
Inflation Rate, Asset Retirement Obligation
Entity Common Stock, Shares Outstanding
Equity Method Investments
Additonal Investment Amount
Equity method investments
Concentration Risk Type [Axis]
Inventory adjustments
Inventory Write-down
Write-down of inventory
Schedule of Components of Income and Mining Tax Benefit (Provision)
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Entity [Domain]
All Entities
Hecla mining company retirement plan [member
Hecla Mining Company Retirement Plan [Member]
Real Return [Member]
Real Return
Company Stock/Real Return [Member]
Put Option [Member]
Put Option [Member]
Other [Member]
Other [Member]
Other [Member]
Payments to Acquire Marketable Securities
Payments to acquire marketable securities
The percentage of shareholders who must give consent before any class or series of stock is created or issued that ranks senior to the Series B preferred stock as to dividends or amounts due upon liquidation, dissolution or winding up.
hl_PercentOfShareholdersConsentNeededToCreateOrIssueStockRankingSeniorToSeriesBPreferredStock
Percent of Shareholders' Consent Needed to Create or Issue Stock Ranking Senior to Series B Preferred Stock
Statement [Table]
Shares Issued, Shares, Share-Based Payment Arrangement, before Forfeiture
Shares Issued, Shares, Share-based Payment Arrangement, before Forfeiture (in shares)
Share-Based Payment Arrangement, Expense
Share-based Payment Arrangement, Expense
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest
(Loss) income before income and mining taxes
Loss before income and mining taxes
Total
Income (loss) before income and mining taxes
Notes:
Long-Term Debt, Rolling Maturity [Abstract]
Gold 2023 Settlements for Provisional Sales [Member]
Gold TwoThousandTwentyThreeSettlementsForProvisionalSales [Member]
Gold TwoThousandTwentyThreeSettlementsForProvisionalSales [Member]
Copper [Member]
Copper [Member]
Copper [Member]
Entity Shell Company
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation
Net cash used in investing activities
Net cash used in investing activities
Pension liability
Liability, Defined Benefit Plan, Noncurrent, Total
Liability, Defined Benefit Plan, Noncurrent
Accrued current benefit liability
Disposal Group, Including Discontinued Operation, Employee Related Liabilities Current
Disposal Group, Including Discontinued Operation, Employee Related Liabilities Current
Discontinued Operation, Accrued payroll and related benefits
Statement [Line Items]
Disposal Group, Including Discontinued Operation, Operating Income (Loss)
Discontinued Operation, Income from discontinued operations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period
Vested
Maximum [Member]
Maximum [Member]
Derivative, loss on derivative
Derivative, Loss on Derivative
JAPAN
JAPAN
Other, Amount
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount, Total
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount
Other, Amount
Change in valuation allowance, Amount
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount
Change in valuation allowance, Amount
Finance Lease, Liability, to be Paid
Total, finance lease
Finance lease, liability, payment, due
Sale of Stock [Domain]
Business Combination, Contingent Consideration, Asset
Business Combination, Contingent Consideration, Asset, Total
Contingent Consideration
Tabular disclosure of unvested shares and that dates that they are expected to vest.
Schedule of Share-based Compensation, Unvested Shares Expected to Vest [Table Text Block]
Increase (Decrease) in Deferred Income Taxes
Deferred income taxes
Cash Provided by (Used in) Financing Activity, Discontinued Operation
Cash used by financing activities of discontinued operations
Disposal Groups, Including Discontinued Operations [Table]
Zinc Two Thousand Twenty Seven Settlements For Forecasted Sales [Member]
Zinc Two Thousand Twenty Seven Settlements For Forecasted Sales [Member]
Zinc 2027 Settlements For Forecasted Sales [Member]
Number of directors
Number of Directors
Number of Directors
Business Combination [Domain]
Disposal of Minera Hecla
Disposal of Subsidiary
Disposal of Subsidiary
Construction in progress
Construction in Progress [Member]
AOCI Tax, Attributable to Parent
Balance, beginning
Balance, ending
Stock Issued During Period Value Compensation To Interim CEO
Stock Issued During Period Value Compensation To Interim CEO
Stock Issued During Period Value Compensation To Interim CEO
Disposal Group, Including Discontinued Operation, Liabilities [Abstract]
LIABILITIES
Concentration Risk Benchmark [Axis]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent
Income and mining tax (provision) / benefit at statutory rate, Percentage
Median [Member]
Derivative Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]
Other non current liabilities
Other Comprehensive Income (Loss) From Continuing Operations
Other Comprehensive Income (Loss) From Continuing Operations
Net income from continuing operations
Comprehensive income (loss) from continuing operations
Comprehensive income from continuing operations
Disposal Group, Including Discontinued Operation, Income and mining tax provision
Disposal Group, Including Discontinued Operation, Income and mining tax provision
Discontinued Operation, Income and mining tax provision
Income and mining tax provision
Subpart F Amount
Subpart F
Subpart F, Amount
Lead is a chemical element with atomic number 82 and periodic table symbol Pb (after the Latin, plumbum).
Lead [Member]
Principles of Consolidation, Basis of Presentation and Other Information
Consolidation, Policy [Policy Text Block]
Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation
Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation
Silver Two Thousand Twenty Six Settlements For Provisional Sales[Member]
Silver Two Thousand Twenty Six Settlements For Provisional Sales[Member]
Silver 2026 Settlements For Provisional Sales [Member]
Subsequent Events [Abstract]
Other, Percentage
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Percent
Asset Class [Axis]
Schedule of Components of Net Deferred Tax Assets and Liabilities
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Foreign Exchange Forward [Member]
Derivative, Forward Exchange Rate
Derivative, Forward Exchange Rate
Description of Fair Value Hedge Activity
Description of hedge activity
Granted (unvested), weighted average fair value per share (in dollars per share)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
Grant date fair value per share
Basic:
Earnings Per Share, Basic [Abstract]
Accrued reclamation costs.
hl_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReclamationCosts
Accrued reclamation costs
Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block]
Schedule of the Quantities of Metals Committed
Assets, Current [Abstract]
Current assets:
Finance Lease, Liability, Current
Finance lease liability, current
Liabilities, Fair Value Disclosure, Total
Liabilities, Fair Value Disclosure
Total liabilities
Dividends Payable, Amount Per Share
Dividend per share
Other Comprehensive Income (Loss), before Reclassifications, before Tax
Other comprehensive income (loss) before reclassification
The number of shares of stock issued during period for a 401k match.
Common stock issued for 401(k) match, shares (in shares)
Common stock issued for 401(k) match, shares (in shares)
Johnny M [Member]
Responsibility under CERCLA for environmental remediation and past costs the EPA has incurred related to the Johnny M Mine Area near San Mateo, McKinley County, New Mexico.
Johnny M Mine Area near San Mateo, New Mexico [Member]
Restricted stock units granted
Stock Issued During Period, Value, Restricted Stock Award, Gross
Restricted Stock Units Vested
Document Fiscal Year Focus
Schedule Of Income And Mining Tax Payments Net of Refunds Received TableTextBlock
Schedule Of Income And Mining Tax Payments Net of Refunds Received TableTextBlock
Schedule Of Income And Mining Tax Payments Net Of Refunds Received
Income Tax Disclosure [Line Items]
Income Tax Disclosure [Line Items]
Common Stock, Shares, Outstanding
Common Stock, Shares, Outstanding, Ending Balance
Common Stock, Shares, Outstanding, Beginning Balance
Silver 2023 Settlements for Provisional Sales [Member]
Silver Two Thousand Twenty Three Settlements For Provisional Sales [Member]
Silver TwoT housand TwentyT hree Settlements For Provisional Sales [Member]
Lucky Friday Pension Plan
Lucky Friday Pension Plan [Member]
Other Tax Expense (Benefit)
Canada - provincial mining taxes
Canada - provincial mining taxes
Asset Acquisition, Average Gold Price
Asset Acquisition, Average Gold Price
Average gold price
Environmental Exit Costs, Name of Property [Domain]
Foreign exchange loss
Deferred Tax Assets, Unrealized Currency Losses
Alexco Resource Corp Member
Alexco Resource Corp [Member]
Alexco Resource Corp [Member]
Lead 2026 Settlements For Forecasted Sales [Member]
Lead 2026 Settlements For Forecasted Sales Member
Lead 2026 Settlements For Forecasted Sales [Member]
Schedule of the amounts recognized in the consolidated balance sheets
Schedule of pension benefits recognized balance sheet location.
Pension Benefits Recognized Balance Sheet Location [Table Text Block]
Financial Instruments [Domain]
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax
Unamortized net loss
Foreign Currency Contract, Asset, Fair Value Disclosure
Foreign exchange contracts
Forecast [Member]
Entity Ex Transition Period
Defined Contribution Plan [Table]
Deferred Foreign Income Tax Expense (Benefit)
Canada
Canada
Foreign
Foreign
Financing Receivable, Past Due [Line Items]
Operating Lease, Liability, Noncurrent
Operating leases
Operating lease liability, noncurrent
Materials and consumables
Materials and Consumables Expenses
Materials and Consumables Expenses
Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Remaining
Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Remaining
Accounts receivable related to working capital remaining
Real Estate Investments
Real Estate Investments [Member]
Revision of Prior Period [Domain]
Total, operating lease
Lessee, Operating Lease, Liability, to be Paid
Lessee, operating lease, liability, to be paid
Disposal Group, Including Discontinued Operation, Other Liabilities, Noncurrent
Other non-current liabilities
Schedule of amounts included in "Accumulated other comprehensive loss, net"
Schedule of Defined Benefit Plan Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]
Treasury Stock, Value, Total
Treasury Stock, Value
Less treasury stock, at cost; 2025 - 8,920,348 and 2024 - 8,813,127 shares issued and held in treasury
Less treasury stock, at cost; June 30, 2025 - 8,768,372 and December 31, 2024 - 8,813,127 shares issued and held in treasury
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component
Security Exchange Name
Measurement Input Type [Axis]
Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration]
Other non-current assets
Revenues
Revenues
Revenues, Total
Finance Lease, Weighted Average Discount Rate, Percent
Finance lease, weighted average discount rate, percent
New Accounting Pronouncements
New Accounting Pronouncements, Policy [Policy Text Block]
Derivative, Gain (Loss) on Derivative, Net, Total
Derivative, Gain (Loss) on Derivative, Net
Derivative, Gain (Loss) on Derivative, Net, Total
Gold Two Thousand Twenty Five Settlements For Provisional Sales [Member]
Gold Two Thousand Twenty Five Settlements For Provisional Sales [Member]
Gold 2025 Settlements For Provisional Sales [Member]
Effective Income Tax Rate Reconciliation, NCTI, Amount
Global intangible low-taxed income, Amount
Global intangible low-taxed income, Amount
Restricted stock unit distributions shares.
Restricted stock unit distributions, shares (in shares)
Assets of discontinued operations
Disposal Group, Including Discontinued Operation, Assets, Current
Discontinued Operation, Assets of discontinued operations, current
Class of Warrant or Right, Exercise Price of Warrants or Rights
Warrants exercise price per share
Operating loss carryforwards expiration period (Year)
Operating loss carryforwards expiration period.
hl_OperatingLossCarryforwardsExpirationPeriod
Common stock investments
Investments in Common stock
Investments in Common stock
Others [Member]
Others [Member]
Others
Entity Address, State or Province
September Two Thousand Twenty Two through December Thirty One Two Thousand Twenty Five [Member]
September Two Thousand Twenty Two through December Thirty One Two Thousand Twenty Five [Member]
September 2022 through December 31, 2025 [Member]
Current:
Current Federal, State and Local, Tax Expense (Benefit) [Abstract]
Production-Based Royalty Payments [Member]
Production-Based Royalty Payments [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition
Discontinued Operation, Cost Of Goods And Services Sold
Discontinued Operation, Cost Of Goods And Services Sold
Discontinued Operation, Total cost of sales
Designated as Hedging Instrument [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)
Senior Notes
Senior Notes, Total
Redeem of Senior Notes
Disclosure Text Block [Abstract]
Notes to Financial Statements
Supplemental Employee Retirement Plan [Member]
Operating Lease, Right-of-Use Asset
Operating lease right-of-use assets
Operating lease right-of-use asset
Reclassification from AOCI to cost of goods sold
Reclassification from AOCI to cost of goods sold
Reclassification from AOCI to cost of goods sold
Amendment Flag
Amendment
Loss Contingencies [Table]
Recognition of operating lease liabilities and right-of-use assets
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability
Unrecognized Tax Benefits, Interest on Income Taxes Expense
Unrecognized Tax Benefits, Interest on Income Taxes Expense
Retirement Plan Name [Domain]
Percentage of sales
Concentration Risk, Percentage
Percentage of accounts receivable
Elimination of Intersegment Sales [Member]
Elimination of Intersegment Sales [Member]
Elimination of Intersegment Sales [Member]
Environmental Remediation Contingency [Domain]
Interest Expense, Debt, Total
Interest Expense, Debt
Interest expense debt
CIBC [Member]
The entity CIBC.
Debt Instrument [Axis]
Other Nonoperating Income (Expense), Total
Other Nonoperating Income (Expense)
Other income
Other (expense) income, net
Tax credit carryforward, valuation allowance
Tax Credit Carryforward, Valuation Allowance
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]
Financing Receivable, Past Due [Table]
Disposal Group, Including Discontinued Operation, Materials and Supplies
Disposal Group, Including Discontinued Operation, Materials and Supplies
Discontinued Operation, Materials and supplies
Debt Instrument Call Premium
Debt Instrument Call Premium
Debt instrument call premium
City Area Code
Lessee, Operating Lease, Liability, to be Paid, Rolling Year Two
2027, operating lease
2028
Internal Credit Assessment [Domain]
Preferred stock, dividends declared (Quarterly)
Dividends, Preferred Stock, Total
Dividends, Preferred Stock
Preferred stock dividends
Preferred stock dividends
Preferred stock dividends
Interest expense
Interest Expense, Nonoperating
Interest Expense, Nonoperating, Total
Series B Preferred Stock
Preferred Stock [Member]
Unrecognized tax benefits
Unrecognized Tax Benefits, Ending Balance
Unrecognized Tax Benefits, Beginning Balance
Unrecognized Tax Benefits
Fair Value Measured at Net Asset Value Per Share [Member]
Provision for Other Losses
Equity Losses
Ending balance
Beginning balance
Reclamation and closure costs
Accrual for Environmental Loss Contingencies, Total
Accrual for Environmental Loss Contingencies
Comprehensive Income (Loss)
Comprehensive Income, Policy [Policy Text Block]
Proceeds from issuance of common stock, net of offering costs
Proceeds from Issuance of Common Stock
Proven and probable ore reserves.
Proven and Probable Ore Reserves [Policy Text Block]
Proven and Probable Mineral Reserves
Amount of accretion expense related to accrual for environmental loss contingencies.
Accretion expense
Schedule of Investments [Table]
Restricted Cash and Investments
Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]
Gain (Loss) on Derivative Instruments Held for Trading Purposes, Net
Losss on derivative instruments
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]
Represents Ocean Partners, a major customer of the company.
Ocean Partners [Member]
Other operating expenses:
Operating Expenses [Abstract]
Purchase Commitment, Excluding Long-Term Commitment [Domain]
Inventory Disclosure [Text Block]
Product Inventories
Change in valuation allowance, Percentage
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent
The entity Scotia.
Scotia [Member]
Tabular disclosure of maturity and sinking fund requirement for long-term debt and the undiscounted cash flows of finance and operating lease liability.
Schedule of Maturities of Long Term Debt and Finance and Operating Lease Liabilities [Table Text Block]
Schedule of Maturities of Long Term Debt and Finance and Operating Lease Liabilities
Environmental Exit Cost by Property [Axis]
Asset Acquisition, Consideration Transferred, Contingent Consideration
Contingent Consideration
Disposal Group, Including Discontinued Operation, Mine Reclamation And Closing Liability Non current
Disposal Group, Including Discontinued Operation, Mine Reclamation And Closing Liability Noncurrent
Discontinued Operation, Accrued reclamation and closure costs
Common Collective Funds
Common Collective Funds [Member]
Plants and equipment
Plant nd equipment [member]
Plant and Equipment [Member]
Impairment of Long-lived Assets
Long-Lived Asset, Including Intangible Asset and Goodwill, Impairment and Disposal [Policy Text Block]
Discontinued Operation, Before Income And Mining Tax Provision
Discontinued Operation, Before Income And Mining Tax Provision
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax
Payments to Employees
Salaries, wages and other benefits
Retirement Benefits [Text Block]
Employee Benefit Plans
Income (Loss) from Continuing Operations, Per Basic Share
Continuing operations
Income from continuing operations after preferred dividends
Common Stock, Par or Stated Value Per Share
Common stock, par value (in dollars per share)
Common Shares Value Per Share
Legal Entity [Axis]
Legal Entity:
Effective Income Tax Rate Reconciliation Provincial Change in Valuation Allowance Percentage
Effective Income Tax Rate Reconciliation Provincial Change in Valuation Allowance Percentage
Provincial - Change in valuation allowance, Percentage
Fed Funds Effective Rate Overnight Index Swap Rate [Member]
Represents warrants with expiration date in February 2029.
Warrant Expiring in February 2029 [Member]
Leases
Lessee, Leases [Policy Text Block]
Discount rate: projected benefit obligation
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate
Numerator for calculating award per participant.
hl_ShareBasedCompensationArrangementByShareBasedPaymentAwardMethodOfMeasuringCostOfAwardParticipantNumerator
Share-Based Compensation Arrangement by Share-Based Payment Award, Method of Measuring Cost of Award Participant, Numerator
Liabilities, Current
Total current liabilities
Total current liabilities
Silver Two Thousand Twenty Six Settlements For Forecasted Sales [Member]
Silver Two Thousand Twenty Six Settlements For Forecasted Sales [Member]
Silver 2026 Settlements For Forecasted Sales [Member]
Disposal Group, Including Discontinued Operation, Other Assets, Current
Discontinued Operation, Other current assets
Deferred Tax Assets, Net of Valuation Allowance
Total deferred tax assets
Payment to Contractors
Payment to Contractors
Contractors
Property, Plant and Equipment, Gross, Ending Balance
Property, Plant and Equipment, Gross, Beginning Balance
Property, Plant and Equipment, Gross, Total
Property, Plant, and Equipment, before Accumulated Depreciation, Depletion, and Amortization
Property, Plant and Equipment
Preferred Stock, Dividends Per Share, Declared
Preferred Stock, Dividends Per Share, Declared
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation
Cash and cash equivalents and restricted cash and cash equivalents at end of year
Cash and cash equivalents and restricted cash and cash equivalents at beginning of year
Total cash and cash equivalents and restricted cash and cash equivalenst as reported on the consolidated cash flow statement
Auditor Opinion
Auditor Opinion [Text Block]
Deferred Federal Income Tax Expense (Benefit)
United States
Domestic
Deposits, Money Market Deposits
Money market funds and other bank deposits
Business Segments, Sales of Products and Significant Customers
Segment Reporting [Text Block]
Development costs
Mine Development [Member]
Long-Term Debt, Maturity, Year Four
2029
Environmental Remediation Site [Domain]
Trading Symbol
Share Repurchase Program [Domain]
Finance Lease, Weighted Average Remaining Lease Term
Finance lease, weighted average remaining lease term (year)
Realized Gain (Loss), Foreign Currency Transaction, before Tax
Foreign exchange (loss) gain, net
Finance Lease, Right-of-Use Asset, Amortization
Finance lease right-of-use asset, amortization
Geographical [Axis]
Property, Plant, and Equipment [Table Text Block]
Schedule of properties, plants, equipment, and mine development
The cash inflow associated with the sale of investments.
Proceeds from sale or exchange of investments
Proceeds from sale or exchange of investments
Operating Leases:
Lessee, Operating Lease, Liability, to be Paid, Rolling Maturity [Abstract]
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]
Finance lease, liability, statement of financial position [Extensible Enumeration]
Real Estate Properties [Domain]
Sales
Revenue from Contract with Customer, Including Assessed Tax
Total consolidated sales
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration]
Other current liabilities
Reclassification from AOCI to Cost of Sales and Other Direct Production Costs
Reclassification from AOCI to Cost of Sales and Other Direct Production Costs
Reclassification from AOCI to cost of sales and other direct production costs
Subsequent Event [Table]
Effective Income Tax Rate Reconciliation Provincial Currency Remeasurement Percentage
Effective Income Tax Rate Reconciliation Provincial Currency Remeasurement Percentage
Provincial - Currency remeasurement, Percentage
Granted, shares (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period
Number of Shares granted awarded, Shares
Entity Emerging Growth Company
Schedule of Foreign Exchange Contracts, Statement of Financial Position
Schedule of Foreign Exchange Contracts, Statement of Financial Position [Table Text Block]
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years
Years 2031-2035
Capital Surplus
Additional Paid-In Capital
Additional Paid-in Capital [Member]
Operating loss carryforwards
Operating Loss Carryforwards
Defined Benefit Plan, Plan Assets, Category [Domain]
Dividends [Axis]
Deferred State and Local Income Tax Expense (Benefit)
State and state mining taxes
Zinc 2023 Settlements for Provisional Sales [Member]
ZincTwoThousandTwentyThreeSettlementsForProvisionalSales [Member]
ZincTwoThousandTwentyThreeSettlementsForProvisionalSales [Member]
Treasury Stock, Preferred, Shares
Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture, Total
Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture
Lead Contract 2023 [Member]
Lead Contract 2023 [Member]
Lead Contract 2023 [Member]
Principal
Long-Term Debt, Gross
Plan Name [Domain]
Forecasted future concentrate contracts [member
Forecasted Future Concentrate Contracts [Member]
Effective Income Tax Rate Reconciliation Provincial Change in Valuation Allowance Amount
Effective Income Tax Rate Reconciliation Provincial Change in Valuation Allowance Amount
Provincial - Change in valuation allowance, Amount
Other non-current liabilities
Other Liabilities, Noncurrent
Debt Instrument, Basis Spread on Variable Rate, Applicable Margin
Debt Instrument, Basis Spread on Variable Rate, Applicable Margin
Debt instrument, basis spread on variable rate, applicable margin
Net finance lease obligation
Net finance lease obligation
Finance Lease, Liability
Finance lease liability
Payments of Dividends, Total
Payments of Dividends
Dividends paid to common and preferred stockholders
Defined Benefit Plan, Funded (Unfunded) Status of Plan
Funded status at end of year
Stock Issued During Period, Shares, Employee Stock Purchase Plans
Percentage depletion, Amount
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Depletion, Amount
Percentage depletion, Amount
Revision of Prior Period [Axis]
Asset Retirement Obligation, Cash Paid to Settle
Payment of asset retirement obligations
Closure plan cost
Accrued Capping, Closure, Post-closure and Environmental Costs
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Non-cash investing and financing activities:
Defined Benefit Plan, Expected Future Benefit Payment, Year Three
2028
Cover [Abstract]
Cover
Defined Benefit Plan, Interest Cost
Interest cost
Common stock issued to Alexco Resource Corp. stockholders [Member]
Common stock issued to Alexco Resource Corp. stockholders
Common Stock Issued To Alexco Resource Corp. Stockholders [Member]
Segment Reporting, Other Segment Item, Amount
Other segment items
Permit Receipt Payment [Member]
Permit Receipt Payment [Member]
Zinc 2026 Settlements For Forecasted Sales [Member]
Zinc 2026 Settlements For Forecasted Sales [Member]
Zinc 2026 Settlements For Forecasted Sales [Member]
Total debt
Debt Instrument Carrying Amount After Unamortized Discount Premium And Issuance Costs
Debt Instrument Carrying Amount After Unamortized Discount Premium And Issuance Costs
Other current asset [Member]
Other current assets [Member]
Other Current Asset [Member]
Other current assets
Lead Two Thousand Twenty Six Settlements For Provisional Sales [Member]
Lead Two Thousand Twenty Six Settlements For Provisional Sales [Member]
Lead 2026 Settlements For Provisional Sales [Member]
Primary financial statement caption encompassing current derivatives liability.
Other Current Liabilities [Member]
Current Derivatives Liability [Member]
Current derivatives liability
Increase decrease in accrued reclamation and closure costs and other non-current liabilities.
hl_IncreaseDecreaseInAccruedReclamationAndClosureCostsAndOtherNonCurrentLiabilities
Accrued reclamation and closure costs and other non-current liabilities
Lead 2025 Settlements for Forecasted Sales [Member]
Lead 2025 Settlements For Forecasted Sales [Member]
Lead2025 Settlements For Forecasted Sales Member
Tax Credit Carryforward, Amount
Tax credit carryforward, amount
Zinc Two Thousand Seven Settlements For Forecasted Sales [Member]
Zinc Two Thousand Seven Settlements For Forecasted Sales [Member]
Deferred Tax Liabilities, Property, Plant and Equipment
Properties, plants and equipment
Operating Lease, Weighted Average Remaining Lease Term
Operating lease, weighted average remaining lease term (year)
Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity
Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]
Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent
Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent, Total
Liabilities of discontinued operations
Payments to Acquire Investments, Total
Payments to Acquire Investments
Purchases of investments
Derivative Liability, Current
Other current assets, liability position
Contracts in a liability position
Current derivative liabilities
Current derivative liabilities
Common stock issued to ATAC Resources Ltd. stockholders
Common Stock Issued to ATAC Resources Ltd. Stockholders [Member]
Common Stock Issued To ATAC Resources Ltd. Stockholders [Member]
Long-Term Debt, Type [Domain]
Defined Contribution Plan, Employer Matching Contribution, Percent of Match
Defined Contribution Plan, Employer Matching Contribution, Percent of Match
Notes To Financial Statements [Abstract]
Notes To Financial Statements Abstract
Accumulated other comprehensive income (loss), net
Accumulated Other Comprehensive Income (Loss), Net of Tax, Total
Accumulated Other Comprehensive Income (Loss), Net of Tax
Accumulated other comprehensive loss, net
Other Postretirement Benefits, Individual Contracts, Type of Deferred Compensation [Axis]
Common stock issued to settle the acquired silver stream (in shares)
Common stock issued to settle the acquired silver stream (in shares)
Common stock issued to settle the acquired silver stream (in shares)
Property, Plant, and Equipment, Useful Life
Property, Plant and Equipment, Useful Life (Year)
Sales revenue goods excluding gain loss on forward contracts.
hl_SalesRevenueGoodsExcludingGainLossOnForwardContracts
Sales by geographical area
Total, excluding gains/losses on derivative contracts
Share-Based Payment Arrangement, Noncash Expense, Total
Share-Based Payment Arrangement, Noncash Expense
Stock-based compensation
Stock-based compensation expense
Capital surplus
Additional Paid in Capital, Total
Additional Paid in Capital
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract]
Non-cash elements included in net income (loss):
Reclassification from AOCI to other expense (income)
Reclassification from AOCI, Current Period, Tax
Reclassification from AOCI, Current Period, Tax, Total
Short-Term Investments
Short-Term Investments, Total
Current investments
Fair Value Disclosures [Abstract]
Cash and cash equivalents
Cash and Cash Equivalents, at Carrying Value, Total
Cash and Cash Equivalent
Casa Berardi [Member]
Reporting segment classified as Casa Berardi.
Casa Berardi [Member]
Canada Revenue Agency [Member]
Canada Revenue Agency [Member]
Payments of Debt Issuance Costs
Debt issuance and credit facility fees paid
Payments of debt issuance costs
Deferred:
Deferred Federal, State and Local, Tax Expense (Benefit) [Abstract]
Zinc Two Thousand Twenty Four Settlements for Provisional Sales [Member]
Zinc Two Thousand Twenty Four Settlements for Provisional Sales [Member]
Zinc 2024 Settlements for Provisional Sales [Member]
Common Stock Issued as Incentive Compensation
Common Stock Issued as Incentive Compensation
Common Stock Issued as Incentive Compensation
Disposal Group, Including Discontinued Operation, Liabilities
Total liabilities
Accumulated Other Comprehensive Income (Loss) [Table]
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation
Net cash (used in) provided by financing activities
O2024Q4Dividends [Member]
O2024Q4Dividends [Member]
Discontinued Operations and Disposal Groups [Abstract]
Unsettled concentrate sales contracts [member
Unsettled Concentrate Sales Contracts [Member]
Represents Properties, Plants, Equipment and Mineral Interests.
Properties, Plants, Equipment and Mineral Interests [Member]
Net Income (Loss) Available to Common Stockholders, Basic
Loss applicable to common shareholders
Net income (loss) applicable to common stockholders
Net income applicable to common stockholders
Asset Retirement Obligation
Asset Retirement Obligation [Member]
Entity Filer Category
Debt Instrument, Name [Domain]
Distribution of Assets, Liabilities and Stockholders' Equity [Table Text Block]
Schedule of Assets and Liability of Discountinued Operation
Derivative Asset, Current
Other current assets
Contracts in an asset position
Schedule of assumptions related to benefit obligation and prepaid benefit costs
Defined Benefit Plan, Assumptions [Table Text Block]
Cash Provided by (Used in) Investing Activity, Discontinued Operation
Cash used in investing activities of discontinued operations
Capital Accumulation 401(K) Plan
Capital Accumulation 401(K) Plan [Member]
Orezone [Member]
Orezone [Member]
Orezone [Member]
Finance Lease, Liability, to be Paid, after Rolling Year Five
Thereafter
Increase (Decrease) in Accounts Receivable
Accounts receivable
Related to reclamation and abandonment costs.
Reclamation and Abandonment Costs [Member]
Price Risk Derivative [Member]
Long-lived assets
Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization
Net carrying value
Properties, plants, equipment and mine development, net
Investment Owned, Fair Value
Investment Owned, Fair Value, Ending Balance
Investment Owned, Fair Value, Beginning Balance
Investment Owned At Fair Value
Derivative, Premium Paid
Premium paid
Real Estate Property Ownership [Axis]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax
Change in fair value of derivative contracts designated as hedge transactions and other
Inventory Disclosure [Abstract]
Derivative Asset, Statement of Financial Position [Extensible Enumeration]
Metal forward contracts
Asset Acquisition [Domain]
Settlement Under Collars [Member]
Settlement Under Collars [Member]
Settlement Under Collars [Member]
Document Information [Line Items]
Document Information:
Non-U.S. equity [Member]
Debt Security, Government, Non-US [Member]
Segment Reporting [Abstract]
Debt Instrument, Participation Fee, Percent
Debt Instrument, Participation Fee, Percent
Debt instrument, participation fee, percent
Business Combination, Contingent Consideration, Description
Contingent Consideration, Description
Schedule of Effective Income Tax Reconciliation
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Summary of Income Tax Contingencies [Table Text Block]
Schedule of Changes in Valuation Allowance
Other current assets
Other Assets, Current
Entity Address, Postal Zip Code
Statement of Financial Position [Abstract]
Finance Lease, Principal Payments
Repayments of finance leases and other
Local Phone Number
Depreciation, Depletion and Amortization
Regulatory Depreciation and Amortization, Policy [Policy Text Block]