Hecla Mining (HL) 8-K 20 May 24 Other Events Financial data

Cover Page

Cover Page	May 20, 2024
Document Information [Line Items]
Entity Central Index Key	0000719413
Entity Registrant Name	HECLA MINING COMPANY
Amendment Flag	true
Document Type	8-K
Document Period End Date	May 20, 2024
Entity File Number	1-8491
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	77-0664171
Entity Address, Address Line One	6500 North Mineral Drive
Entity Address, Address Line Two	Suite 200
Entity Address, City or Town	Coeur d’Alene
Entity Address, State or Province	ID
Entity Address, Postal Zip Code	83815-9408
City Area Code	208
Local Phone Number	769-4100
Entity Emerging Growth Company	false
Written Communications	false
Soliciting Material	false
Pre-commencement Tender Offer	false
Pre-commencement Issuer Tender Offer	false
Amendment Description	Explanatory Note Hecla Mining Company and our affiliates and subsidiaries are filing this Current Report on Form 8-K solely to update portions of our Annual Report on Form 10-K for Hecla Mining Company for the year ended December 31, 2023, filed on February 15, 2024 (“2023 Form 10-K”) to reflect a change in Hecla’s reportable segments. In this exhibit, “we” or “our” or “us” refers to Hecla Mining Company and our affiliates and subsidiaries, unless the context requires otherwise. As previously disclosed in our Quarterly Report on Form 10-Q for the period ended March 31, 2024 (as filed with the SEC on May 9, 2024), effective in the first quarter of our fiscal year 2024, our internal reporting and reportable segments changed to align with a change in the chief operating decision makers’ evaluation of Hecla, effective January 2024. The Nevada Operations, historically reported as a separate segment, is now reported in Other. In accordance with Accounting Standards Codification (“ASC”) 280 guidance, segment information for all periods presented has been revised for these changes. All prior period information has been recast to reflect this change in reportable segments. This will allow us to incorporate the recast financial statements by reference, or otherwise, in future SEC filings. This exhibit updates the information in the following Items as initially filed in order to reflect the change in segment presentation:   Item 1.    Business Item 7.    Management’s Discussion and Analysis of Financial Condition and Results of Operations Item 8.    Financial Statements and Supplementary Data Item 15.    Exhibits and Financial Statement SchedulesNo items in the 2023 Form 10-K other than those identified above are being updated by this exhibit. Information in the 2023 Form 10-K is generally stated as of December 31, 2023, and this exhibit does not reflect any subsequent information or events other than the change in segment reporting noted above. Without limiting the foregoing, this exhibit does not purport to update Management’s Discussion and Analysis of Financial Condition and Results of Operations contained in the 2023 Form 10-K for any information, uncertainties, transactions, risks, events, or trends occurring, or known to management, other than the events described above. For a discussion of events and developments subsequent to the filing of the 2023 Form 10-K, please refer to our SEC filings since that date. More current information is contained in the 2024 Form 10-Q and our other filings with the SEC after February 15, 2024. This exhibit should be read in conjunction with our Annual Reports on 2023 Form 10-K and any other documents we have filed with the SEC subsequent to February 15, 2024. The information contained in this exhibit is not an amendment to, or a restatement of, the 2023 Form 10-K.
Common Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	Common Stock, par value $0.25 per share
Trading Symbol	HL
Security Exchange Name	NYSE
Series B Preferred Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	Series B Cumulative Convertible Preferred Stock, par value $0.25 per share
Trading Symbol	HL-PB
Security Exchange Name	NYSE

Consolidated Statements of Oper

Consolidated Statements of Operations and Comprehensive (Loss) Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Statement [Abstract]
Sales	$ 720,227	$ 718,905	$ 807,473
Depreciation, depletion and amortization	148,774	143,938	171,793
Cost of sales and other direct production costs	458,504	458,811	417,879
Total cost of sales	607,278	602,749	589,672
Gross profit	112,949	116,156	217,801
Other expense:
Fair value adjustments, net	2,925	(4,723)	(35,792)
Foreign exchange gain (loss), net	(3,810)	7,211	417
Other net expense	5,883	7,829	(574)
Interest expense, net	(43,319)	(42,793)	(41,945)
Total other expense:	(38,321)	(32,476)	(77,894)
(Loss) income before income and mining taxes	(82,995)	(44,914)	5,526
Income and mining tax benefit (provision)	(1,222)	7,566	29,569
Net (loss) income	(84,217)	(37,348)	35,095
Preferred stock dividends	(552)	(552)	(552)
Net (loss) income applicable to common stockholders	(84,769)	(37,900)	34,543
Other operating expenses:
General and administrative	42,722	43,384	34,570
Exploration and pre-development	32,512	46,041	47,901
Provision for closed operations and environmental matters	7,575	8,793	14,571
Ramp-up and suspension costs	76,252	24,114	23,012
Other operating (income) expense, net	(1,438)	6,262	14,327
Total other operating expenses	157,623	128,594	134,381
(Loss) income from operations	(44,674)	(12,438)	83,420
Comprehensive (loss) income:
Net Income (Loss)	(84,217)	(37,348)	35,095
Unrealized gain (loss) and amortization of prior service on pension plans	(1,157)	17,067	16,740
Unrealized gain (loss) on derivative contracts designated as hedge transactions	4,546	13,837	(12,307)
Total change in accumulated other comprehensive income (loss), net	3,389	30,904	4,433
Comprehensive (loss) income	$ (80,828)	$ (6,444)	$ 39,528
Basic (loss) income per common share after preferred dividends	$ (0.14)	$ (0.07)	$ 0.06
Diluted (loss) income per common share after preferred dividends	$ (0.14)	$ (0.07)	$ 0.06
Weighted average number of common shares outstanding - basic	605,668	557,344	536,192
Weighted average number of common shares outstanding - diluted	605,668	557,344	542,176

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net Income (Loss)	$ (84,217)	$ (37,348)	$ 35,095
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Depreciation, depletion and amortization	163,672	145,147	172,651
Fair value adjustments, net	(2,925)	24,182	15,040
Inventory adjustments	20,819	2,646	6,524
Provision for reclamation and closure costs	9,658	9,572	11,514
Deferred income taxes	(6,115)	(25,546)	(48,049)
Stock compensation	6,598	6,012	6,082
Foreign exchange (gain) loss	3,810	(9,210)	(79)
Other non-cash items	3,094	3,736	2,663
Increase (Decrease) in Operating Capital [Abstract]
Accounts receivable	25,133	8,669	(5,405)
Inventories	(24,035)	(18,230)	16,919
Other current and non-current assets	(32,456)	(12,388)	(1,678)
Accounts payable and accrued liabilities	598	(24,981)	(795)
Accrued payroll and related benefits	(4,982)	13,732	1,270
Accrued taxes	(571)	(7,927)	6,457
Accrued reclamation and closure costs and other non-current liabilities	(2,582)	11,824	2,128
Net cash provided by operating activities	75,499	89,890	220,337
Net Cash Provided by (Used in) Investing Activities [Abstract]
Additions to properties, plants, equipment and mineral interests	(223,887)	(149,378)	(109,048)
Pre-acquisition advance to Alexco	0	(25,000)	0
Acquisition, net	228	8,953	0
Purchase of carbon credits	0	0	(869)
Proceeds from sale or exchange of investments	0	9,375	1,811
Proceeds from disposition of properties, plants, equipment and mineral interests	1,329	748	1,077
Purchases of investments	(8,962)	(31,971)	0
Net cash used in investing activities	(231,292)	(187,273)	(107,029)
Net Cash Provided by (Used in) Financing Activities [Abstract]
Proceeds from issuance of common stock, net of offering costs	56,684	17,278	0
Dividends paid to common and preferred stockholders	(15,713)	(12,932)	(20,672)
Acquisition of treasury shares from employee equity awards	(2,036)	(3,677)	(4,525)
Borrowings of debt	239,000	25,000	0
Repayments of debt	(111,000)	(25,000)	0
Repayments of finance leases	(10,605)	(7,633)	(7,285)
Other	0	(536)	(116)
Net cash used in financing activities	156,330	(7,500)	(32,598)
Effect of exchange rates on cash	1,095	(273)	(530)
Net (decrease) increase in cash, cash equivalents and restricted cash and cash equivalents	1,632	(105,156)	80,180
Cash, cash equivalents and restricted cash and cash equivalents at beginning of year	105,907	211,063	130,883
Cash, cash equivalents and restricted cash and cash equivalents at end of year	107,539	105,907	211,063
Supplemental Cash Flow Information [Abstract]
Interest	(37,744)	(37,200)	(37,565)
Income and mining taxes	8,907	14,405	12,105
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Addition of finance lease obligations	16,116	11,887	4,870
Recognition of operating lease liabilities and right-of-use assets	203	6,842	4,874
Common stock contributed to pension plans	1,035	9,740	22,250
Common stock issued for 401(k) match	4,608	4,470	4,339
Common stock issued to settle acquired silver stream	0	135,000
Equity securities received from exchange of investments	0	0	3,626
Common stock issued to Alexco Resource Corp. stockholders
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Common stock issued to Alexco Resource Corp. stockholders	0	68,733
Common stock issued to ATAC Resources Ltd. stockholders
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Common stock issued to Alexco Resource Corp. stockholders	$ 18,789	$ 0	$ 0

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 106,374	$ 104,743
Accounts receivable:
Trade	14,740	45,146
Other, net	18,376	10,695
Inventories:
Product inventories	28,823	37,303
Materials and supplies	64,824	53,369
Other current assets	27,125	16,471
Total current assets	260,262	267,727
Assets, Noncurrent [Abstract]
Investments	33,724	24,018
Restricted cash and cash equivalents	1,165	1,164
Properties, plants, equipment and mineral interests, net	2,666,250	2,569,790
Operating lease right-of-use assets	8,349	11,064
Deferred tax assets	2,883	21,105
Other non-current assets	38,471	32,304
Total assets	3,011,104	2,927,172
Current liabilities:
Accounts payable and accrued liabilities	81,737	84,747
Accrued payroll and related benefits	28,240	37,579
Accrued taxes	3,501	4,030
Finance leases	9,752	9,483
Accrued reclamation and closure costs	9,660	8,591
Accrued interest	14,405	14,454
Derivative liabilities	1,144	16,125
Other current liabilities	9,021	3,457
Total current liabilities	157,460	178,466
Liabilities, Noncurrent [Abstract]
Accrued reclamation and closure costs	110,797	108,408
Long-term debt including finance leases	653,063	517,742
Deferred tax liability	104,835	125,846
Derivatives liabilities	364	6,066
Other non-current liabilities	16,481	11,677
Total liabilities	1,043,000	948,205
Commitments and contingencies (Notes 5, 6, 9, 10, 14 and 15)
STOCKHOLDERS' EQUITY
Preferred stock, 5,000,000 shares authorized: Series B preferred stock, $0.25 par value, 2023 and 2022 - 157,776 shares issued and outstanding, liquidation preference — $7,889	39	39
Common stock, $0.25 par value, authorized 750,000,000 shares; issued 2023 — 624,647,379 shares and 2022 — 607,619,495 shares	156,076	151,819
Capital surplus	2,343,747	2,260,290
Accumulated deficit	(503,861)	(403,931)
Accumulated other comprehensive income (loss), net	5,837	2,448
Less treasury stock, at cost; 2023 — 8,535,161 and 2022 — 8,132,553 shares issued and held in treasury	(33,734)	(31,698)
Total stockholders' equity	1,968,104	1,978,967
Total liabilities and stockholders' equity	$ 3,011,104	$ 2,927,172

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Series B preferred stock, par value (in dollars per share)	$ 0.25	$ 0.25
Series B preferred stock, shares issued (in shares)	157,776	157,776
Series B preferred stock, shares outstanding (in shares)	157,776	157,776
Common Stock, Par or Stated Value Per Share	$ 0.25	$ 0.25
Common Stock, Shares Authorized	750,000,000	750,000,000
Common stock, shares issued (in shares)	624,647,379	607,619,495
Treasury Stock, Common, Shares	8,535,161	8,132,553
Series B Preferred Stock [Member]
Series B preferred stock, shares outstanding (in shares)	157,776	157,776
Preferred Stock, Liquidation Preference, Value	$ 7,889	$ 7,889

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Treasury Stock	Series B Preferred Stock	Common Stock	Capital Surplus	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss), net
Balance at Dec. 31, 2020	$ 1,713,785	$ (23,496)	$ 39	$ 134,629	$ 2,003,576	$ (368,074)	$ (32,889)
Net loss	35,095	0	0	0	0	35,095	0
Stock issued to directors	1,844	0	0	52	1,792	0	0
Stock issued for 401(k) match	4,339	0	0	172	4,167	0	0
Restricted stock units granted	4,238	0	0	0	4,238	0	0
Stock Based Compensation Units Distributed	(4,525)	(4,525)		413	(413)
Common stock and Series B Preferred stock dividends declared	(20,672)	0	0	0	0	(20,672)	0
Common stock issued to pension plans	22,250	0	0	1,125	21,125	0	0
Other comprehensive income	4,433	0	0	0	0	0	4,433
Balance at Dec. 31, 2021	1,760,787	(28,021)	39	136,391	2,034,485	(353,651)	(28,456)
Net loss	(37,348)	0	0	0	0	(37,348)	0
Stock issued to directors	417	0	0	25	392	0	0
Stock issued for 401(k) match	4,470	0	0	245	4,225	0	0
Restricted stock units granted	5,595	0	0	0	5,595	0	0
Stock Based Compensation Units Distributed	(3,677)	(3,677)		447	(447)
Common stock and Series B Preferred stock dividends declared	(12,932)	0	0	0	0	(12,932)	0
Common stock issued to pension plans	9,740	0	0	548	9,192	0	0
Common stock issued to Alexco Resource Corp. shareholders	68,733	0	0	4,498	64,235	0	0
Common stock issued to settle the acquired silver stream	135,000	0	0	8,700	126,300	0	0
Common stock issued upon conversion of Series B Preferred stock	0	0	0	0	0	0	0
Common stock issued under ATM program	17,278	0	0	965	16,313	0	0
Other comprehensive income	30,904	0	0	0	0	0	30,904
Balance at Dec. 31, 2022	1,978,967	(31,698)	39	151,819	2,260,290	(403,931)	2,448
Net loss	(84,217)	0	0	0	0	(84,217)	0
Stock issued to directors	676	0	0	31	645	0	0
Stock issued for 401(k) match	4,608	0	0	225	4,383	0	0
Restricted stock units granted	5,922	0	0	0	5,922	0	0
Incentive compensation distributed	(2,036)	(2,036)		359	(359)
Common stock and Series B Preferred stock dividends declared	(15,713)	0	0	0	0	(15,713)	0
Common stock issued to pension plans	1,035	0	$ 0	62	973	0	0
Common stock issued to ATAC Resources Ltd.	$ 18,789	0		919	17,870	0	0
Common stock issued to ATAC Resources Ltd.	3,676,904		0
Common stock issued under ATM program	$ 56,684	0	$ 0	2,661	54,023	0	0
Other comprehensive income	3,389	0	0	0	0	0	3,389
Balance at Dec. 31, 2023	$ 1,968,104	$ (33,734)	$ 39	$ 156,076	$ 2,343,747	$ (503,861)	$ 5,837

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Stockholders' Equity (Parentheticals) - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Stock issued to directors, shares (in shares)	125,063	68,816	207,000
Common stock issued for 401(k) match, shares (in shares)	898,894	978,964	685,000
Stock-based compensation units distributed (in shares)		2,192,795	1,653,000
Incentive Compensation Distributed (in Share)	1,432,323
Common Stock, Dividends, Per Share, Cash Paid	$ 0.0375	$ 0.0375	$ 0.0375
Preferred Stock, Dividends Per Share, Declared	$ 2.63	$ 2.63	$ 2.63
Common stock issued to Alexco Resource Corp. shareholders ( in shares)		17,992,875
Common stock issued to settle the acquired silver stream (in shares)		34,800,990
Common stock issued under ATM program , shares	10,645,198	3,860,199
Stock Issued During Period, Shares, Employee Benefit Plan	249,500	2,190,000	4,500,000
Number of series B preffered stock coverted	40	40
Common stock issued upon conversion of series B preffered stock	128	128
Common stock issued to ATAC Resources Ltd. Shares	3,676,904

Note 1 - The Company

Note 1 - The Company	12 Months Ended
	Dec. 31, 2023
Notes To Financial Statements [Abstract]
The Company	Note 1: The Company Hecla Mining Company, and its affiliates and subsidiaries (collectively, “Hecla,” “we,” “us” or “the Company”), is the largest silver producer in the United States. In addition to operating mines in Alaska, Idaho and Quebec, Canada, the Company is developing a mine in the Yukon, Canada, and owns a number of exploration and pre-development projects in world-class silver and gold mining districts throughout North America. Our current holding company structure dates from the incorporation of Hecla Mining Company in 2006 and the renaming of our subsidiary (previously Hecla Mining Company) as Hecla Limited. Hecla Limited was incorporated on October 14, 1891 as an Idaho Corporation in northern Idaho’s Silver Valley. We believe we are the oldest operating precious metals mining company in the United States and the largest silver producer in the United States. Our corporate offices are in Coeur d’Alene, Idaho and Vancouver, British Columbia. The cash flow and profitability of the Company’s operations are significantly affected by the market price of silver, gold, lead and zinc, which are affected by numerous factors beyond our control. On July 7, 2023, we completed the acquisition of ATAC Resources Ltd. (“ATAC”), a Canadian publicly traded company, for total consideration of approximately $19.4 million through the issuance of 3,676,904 shares of Hecla common stock to ATAC shareholders based on the share exchange ratio of 0.0166 Hecla share for each ATAC common share, and $0.6 million of acquisition costs. The acquisition was deemed to be an asset acquisition under GAAP as substantially all of the fair value of the gross assets acquired was concentrated in a single asset group being mineral interests. The total consideration was assigned to the estimated fair values of the assets acquired and liabilities assumed, with $18.1 million assigned to mineral interests. As part of the acquisition, we also acquired 5,502,956 units consisting of (i) shares of Cascadia Minerals Ltd. (“Cascadia”) representing a 19.9% stake, and (ii) full warrants with a five-year term for a CAD$2 million cash investment in Cascadia. Cascadia will be managed by the former management of ATAC, who will explore specific properties in the Yukon and British Columbia. We have the right to appoint two directors to Cascadia’s board. References to “CAD” and “MXN” refer to the Canadian Dollar and Mexican Peso, respectively.

Note 2 - Summary of Significant

Note 2 - Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2023
Notes To Financial Statements [Abstract]
Summary of Significant Accounting Policies	Note 2: Summary of Significant Accounting Policies A. Principles of Consolidation, Basis of Presentation and Other Information — B. Assumptions and Use of Estimates — financial C. Cash and Cash Equivalents — D. Investments — E. Inventories — Stockpiled ore inventory represents ore that has been mined, hauled to the surface, and is available for further processing. Stockpiles are measured by estimating the number of tons added and removed from the stockpile, the amount of contained metal ounces or pounds (based on assay data) and the estimated metallurgical recovery rates (based on the expected processing method). Costs are allocated to a stockpile based on relative values of material stockpiled and processed using current mining costs incurred up to the point of stockpiling the ore, including applicable overhead, depreciation, depletion and amortization relating to mining operations, and removed at each stockpile’s average cost per recoverable unit. In-process inventory represents material that is currently in the process of being converted to a saleable product. Conversion processes vary depending on the nature of the ore and the specific processing facility, but include mill in-circuit, flotation, and carbon-in-leach. In-process material is measured based on assays of the material fed into the process and the projected recoveries of the respective processing plants. In-process inventory is valued at the lower of the average cost of the material fed into the process attributable to the source material coming from the mine and stockpile plus the in-process conversion costs, including applicable amortization relating to the process facilities incurred to that point in the process, or net realizable value. Finished goods inventory includes doré and concentrates at our operations, doré in transit to refiners or at refiners waiting to be processed, and bullion in our accounts at refineries. F. Restricted Cash and Cash Equivalents — G. Properties, Plants, Equipment and Mineral Interests The costs of removing overburden and waste materials to access the ore body at an open-pit mine prior to the production stage are referred to as “pre-stripping costs.” Pre-stripping costs are capitalized during the development stage. Where multiple open pits exist at an operation utilizing common facilities, pre-stripping costs are capitalized at each pit. The production stage of a mine commences when saleable materials, beyond a de minimis amount, are produced. Stripping costs incurred during the production stage are treated as variable production costs included as a component of inventory, to be recognized in cost of sales and other direct production costs in the same period as the revenue from the sale of inventory. When stripping costs incurred during the production phase result in the construction of an asset with an alternative use, such as a tailings storage facility, a portion of those stripping costs are capitalized. Costs for exploration, pre-development, secondary development at operating mines, including drilling costs related to those activities (discussed further below), and maintenance and repairs on capitalized properties, plants and equipment are charged to operations as incurred. Exploration costs include those relating to activities carried out in search of previously unidentified resources or exploration targets, (a) at undeveloped concessions, or (b) at operating mines already containing proven and probable reserves, where a determination remains pending as to whether new target deposits outside of the existing reserve areas can be economically developed. Pre-development activities involve costs incurred in the exploration stage that may ultimately benefit production, such as underground ramp development, which are expensed due to the lack of evidence of economic viability, which is necessary to demonstrate future recoverability of these expenses. At an underground mine, secondary development costs are incurred for preparation of an ore body for production in a specific ore block, stope or work area, providing a relatively short-lived benefit only to the mine area they relate to, and not to the ore body as a whole. Primary development costs benefit long-term production, multiple mine areas, or the ore body as a whole, and are therefore capitalized. Drilling, development and related costs are either classified as exploration, pre-development or secondary development, as defined above, and charged to operations as incurred, or capitalized, based on the following criteria: • whether the costs are incurred to further define resources or exploration targets at and adjacent to existing reserve areas or intended to assist with mine planning within a reserve area; • whether the drilling or development costs relate to an ore body that has been determined to be commercially mineable, and a decision has been made to put the ore body into commercial production; and • whether, at the time the cost is incurred: (a) the expenditure embodies a probable future benefit that involves a capacity, singly or in combination with other assets, to contribute directly or indirectly to future net cash inflows, (b) we can obtain the benefit and control others’ access to it, and (c) the transaction or event giving rise to our right to or control of the benefit has already occurred. If all of these criteria are met, drilling, development and related costs are capitalized. Drilling and development costs not meeting all of these criteria are expensed as incurred. The following factors are considered in determining whether or not the criteria listed above have been met, and capitalization of drilling and development costs is appropriate: • completion of a favorable economic study and mine plan for the ore body targeted; • authorization of development of the ore body by management and/or the board of directors; and • there is a justifiable expectation, based on applicable laws and regulations, that issuance of permits or resolution of legal issues and/or contractual requirements necessary for us to have the right to or control of the future benefit from the targeted ore body have been met. Drilling and related costs of approximately $17.6 million, $11.2 million, and $5.2 million for the years ended December 31, 2023, 2022 and 2021, respectively, met our criteria for capitalization listed above at our production stage properties. When assets are retired or sold, the costs and related allowances for depreciation and amortization are eliminated from the accounts and any resulting gain or loss is reflected in current period net income (loss). Our mineral interests, which are tangible assets, include acquired undeveloped mineral interests and royalty interests. Undeveloped mineral interests include: (i) resources which are measured, indicated or inferred with insufficient drill spacing or quality to qualify as proven and probable reserves; and (ii) inferred material and exploration targets not immediately adjacent to existing proven and probable reserves but accessible within the immediate mine infrastructure. Residual values for undeveloped mineral interests represent the expected fair value of the interests at the time we plan to convert, develop, further explore or dispose of the interests and are evaluated at least annually. H. Depreciation, Depletion and Amortization — J. Proven and Probable Mineral Reserves Undeveloped mineral interests and value beyond proven and probable reserves are not amortized until such time as there are proven and probable reserves or the related mineralized material is converted to proven and probable reserves. At that time, the basis of the mineral interest is amortized on a units-of-production basis. Pursuant to our policy on impairment of long-lived assets (discussed further below), if it is determined that an undeveloped mineral interest cannot be economically converted to proven and probable reserves and its carrying value exceeds its estimated undiscounted future cash flows, the basis of the mineral interest is reduced to its fair value and an impairment loss is recorded to expense in the period in which it is determined to be impaired. I. Impairment of Long-lived Assets — Although management has made what it believes to be a reasonable estimate of factors based on current conditions and information, assumptions underlying future cash flows, which includes the estimated value of resources and exploration targets, are subject to significant risks and uncertainties. Estimates of undiscounted future cash flows are dependent upon, among other factors, estimates of: (i) metals to be recovered from proven and probable mineral reserves and identified resources and exploration targets beyond proven and probable reserves, (ii) future production and capital costs, (iii) estimated metals prices (considering current and historical prices, forward pricing curves and related factors) over the estimated remaining mine life and (iv) market values of mineral interests. It J. Proven and Probable Mineral Reserves — Reserve estimates will change as existing reserves are depleted through production, as additional reserves are proven and added to the estimates and as market prices of metals, production or capital costs, smelter terms, the grade or tonnage of the deposit, throughput, dilution of the ore or recovery rates change. K. Leases — Operating and finance lease ROU assets and lease liabilities are recognized at the lease commencement date based on the present value of the future lease payments over the lease term. When the rate implicit to the lease cannot be readily determined, we utilize our incremental borrowing rate in determining the present value of the future lease payments. The incremental borrowing rate is derived from information available at the lease commencement date and represents the rate of interest that we would have to pay to borrow on a collateralized basis over a similar term an amount equal to the lease payments in a similar economic environment. The ROU asset includes any lease payments made and lease incentives received prior to the commencement date. Operating lease ROU assets also include any cumulative prepaid or accrued rent when the lease payments are uneven throughout the lease term. The ROU assets and lease liabilities may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. L. Income and Mining Taxes — We evaluate uncertain tax positions in a two-step process, whereby (i) it is determined whether it is more likely than not that the tax positions will be sustained based on the technical merits of the position and (ii) for those tax positions that meet the more-likely-than-not recognition threshold, the largest amount of tax benefit that is greater than 50% likely of being realized upon ultimate settlement with the related tax authority would be recognized. We evaluate our ability to realize deferred tax assets by considering the sources and timing of taxable income, including the reversal of existing temporary differences, the ability to carryback tax attributes to prior periods, qualifying tax-planning strategies, and estimates of future taxable income exclusive of reversing temporary differences. In determining future taxable income, the Company’s assumptions include the amount of pre-tax operating income according to different state, federal and international taxing jurisdictions, the origination of future temporary differences, and the implementation of feasible and prudent tax-planning strategies. Should we determine that a portion of our deferred tax assets will not be realized, a valuation allowance is recorded in the period that such determination is made. When we determine, based on the existence of sufficient evidence, that more or less of the deferred tax assets are more likely than not to be realized, an adjustment to the valuation allowance is made in the period such a determination is made. We classify as income taxes mine license taxes incurred in the states of Alaska and Idaho, the net proceeds taxes incurred in Nevada, mining duties in Mexico, and resource taxes incurred in Quebec and Yukon, Canada. M. Reclamation and Remediation Costs (Asset Retirement Obligations) — At our non-operating properties, we accrue costs associated with environmental remediation obligations when it is probable that such costs will be incurred and they are reasonably estimable. Accruals for estimated losses from environmental remediation obligations have historically been recognized no later than completion of the remediation feasibility study for such facility and are charged to current earnings under provision for closed operations and environmental matters. Costs of future expenditures for environmental remediation are not discounted to their present value unless subject to a contractually obligated fixed payment schedule. Such costs are based on management’s current estimate of amounts to be incurred when the remediation work is performed, within current laws and regulations. Future closure, reclamation and environmental-related expenditures are difficult to estimate in many circumstances, due to the early stage nature of investigations, uncertainties associated with defining the nature and extent of environmental contamination, the application of laws and regulations by regulatory authorities, and changes in reclamation or remediation technology. We periodically review accrued liabilities for such reclamation and remediation costs as evidence becomes available indicating that our liabilities have potentially changed. Changes in estimates at our non-operating properties are reflected in current period net income (loss). N. Revenue Recognition and Trade Accounts Receivable — P. Risk Management Contracts Refining, selling and shipping costs related to sales of doré, metals from doré, and carbon are recorded to cost of sales as incurred. Sales and accounts receivable for concentrate shipments are recorded net of charges by the customers for treatment, refining, smelting losses, and other charges negotiated by us with the customers. Charges are estimated by us upon shipment of concentrates based on contractual terms, and actual charges typically do not vary materially from our estimates. Costs charged by customers include fixed costs per ton of concentrate, and price escalators which allow the customers to participate in the increase of lead and zinc prices above a negotiated baseline. O. Foreign Currency — P. Risk Management Contracts P. Risk Management Contracts — Q. Stock Based Compensation — R. Basic and Diluted Income (Loss) Per Common Share — S. Comprehensive Income (Loss) — T. New Accounting Pronouncements — Accounting Standards Updates Adopted In March 2020, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Updates to Become Effective in Future Periods In August 2023, the FASB issued ASU 2023-05, Business Combinations—Joint Venture Formations (Subtopic 805-60): Recognition and Initial Measurement, which clarifies the business combination accounting for joint venture formations. The amendments in the ASU seek to reduce diversity in practice that has resulted from a lack of authoritative guidance regarding the accounting for the formation of joint ventures in separate financial statements. The amendments also seek to clarify the initial measurement of joint venture net assets, including businesses contributed to a joint venture. The guidance is applicable to all entities involved in the formation of a joint venture. The amendments are effective for all joint venture formations with a formation date on or after January 1, 2025. Early adoption and retrospective application of the amendments are permitted. We do not expect adoption of the new guidance to have a material impact on our consolidated financial statements and disclosures. In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures, amending reportable segment disclosure requirements to include disclosure of incremental segment information on an annual and interim basis. Among the disclosure enhancements are new disclosures regarding significant segment expenses that are regularly provided to the chief operating decision-maker and included within each reported measure of segment profit or loss, as well as other segment items bridging segment revenue to each reported measure of segment profit or loss. The amendments in ASU 2023-07 are effective for fiscal years beginning after December 15, 2023, and for interim periods within fiscal years beginning after December 15, 2024, and are applied retrospectively. Early adoption is permitted. We are currently evaluating the impact of this update on our consolidated financial statements and disclosures. In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvement to Income Tax Disclosures, amending income tax disclosure requirements for the effective tax rate reconciliation and income taxes paid. The amendments in ASU 2023-09 are effective for fiscal years beginning after December 15, 2024 and are applied prospectively. Early adoption and retrospective application of the amendments are permitted. We are currently evaluating the impact of this update on our consolidated financial statements and disclosures.

Note 3 - Investments

Note 3 - Investments	12 Months Ended
	Dec. 31, 2023
Schedule of Investments [Abstract]
Investments	Note 3: Investments At December 31, 2023 and 2022, the fair value of our non-current investments was $33.7 million and $24.0 million, respectively. Our non-current investments consist of marketable equity securities which are carried at fair value and our investment in Cascadia which was acquired as part of the acquisition of ATAC and accounted for under the equity method. We recognized $0.3 million in equity losses of Cascadia since the acquisition which is included in the line item “Other net expenses” in our Consolidated Statement of Operations and Comprehensive (Loss) Income. We acquired marketable equity securities having a cost basis of $9.0 million and $32.0 million in 2023 and 2022, respectively. During 2023, 2022 and 2021, we recognized $0.2 million, $5.6 million and $4.3 million in net unrealized losses, respectively, in current earnings.

Note 4 - Business Segments, Sal

Note 4 - Business Segments, Sales of Products and Significant Customers	12 Months Ended
	Dec. 31, 2023
Segment Reporting [Abstract]
Business Segments, Sales of Products and Significant Customers	Note 4: Business Segments, Sales of Products and Significant Customers We discover, acquire and develop mines and other mineral interests and produce and market (i) concentrates containing silver, gold, lead and zinc, (ii) carbon material containing silver and gold, and (iii) doré containing silver and gold. We are currently organized and managed in four The Company regularly reviews its segment reporting for alignment with its strategic goals and operational structure as well as for evaluation of business performance and allocation of resources by Hecla’s Chief Operating Decision Maker (“CODM”). Effective January 2024 we revised our internal reporting provided to our CODM to no longer include any financial performance information for our Nevada Operations, reflecting the current status of the Nevada Operations being on care and maintenance. General corporate activities not associated with operating mines and their various exploration activities, as well as idle properties and environmental remediation services in the Yukon, Canada, and the previously separately reported Nevada Operations are presented as “Other.” The presentation of the prior period information disclosed below has been revised to reflect this change. General corporate activities not associated with operating mines and their various exploration activities, as well as idle properties and environmental remediation services in the Yukon, Canada, are presented as “other.” The nature of the items that reconcile income (loss) from operations to loss before income and mining taxes are not related to our reportable segments. The tables below present information about our reportable segments as of and for the years ended December 31, 2023, 2022 and 2021 (in thousands). 2023 2022 2021 Net sales to unaffiliated customers: Greens Creek $  384,504 $ 335,062 $ 384,843 Lucky Friday 116,284 147,814 131,488 Keno Hill 35,518 —  —  Casa Berardi 177,678 235,136 245,152 Other 6,243 893 45,990 Total sales to unaffiliated customers $ 720,227 $ 718,905 $ 807,473 Income (loss) from operations: Greens Creek $ 113,551 $ 87,297 $ 164,666 Lucky Friday 4,811 27,636 31,683 Keno Hill (35,344 ) (4,249 ) —  Casa Berardi (56,683 ) (21,799 ) 5,807 Other (71,009 ) (101,323 ) (118,736 ) Total (loss) income from operations $ (44,674 ) $ (12,438 ) $ 83,420 Capital additions (excluding non-cash items): Greens Creek $ 43,542 $ 36,898 $ 23,883 Lucky Friday 65,337 50,992 29,885 Keno Hill 44,672 19,725 —  Casa Berardi 70,056 39,667 49,617 Other 280 2,096 5,663 Total capital additions $ 223,887 $ 149,378 $ 109,048 Depreciation, depletion and amortization: Greens Creek $ 53,995 $ 48,911 $ 48,710 Lucky Friday 24,325 33,704 26,846 Keno Hill 4,277 —  —  Casa Berardi 66,037 60,962 80,744 Other 140 361 15,493 Total depreciation, depletion and amortization $ 148,774 $ 143,938 $ 171,793 Other significant non-cash items: Greens Creek $ 11,098 $ 2,821 $ 3,653 Lucky Friday (916 ) 1,138 1,048 Keno Hill 376 1,669 —  Casa Berardi 13,378 1,520 1,284 Other 18,994 3,568 (12,290 ) Total other significant non-cash items $ 42,930 $ 10,716 $ (6,305 ) Identifiable assets: Greens Creek $ 569,369 $ 582,687 $ 589,944 Lucky Friday 578,110 571,510 516,545 Keno Hill 362,986 276,096 —  Casa Berardi 683,035 681,631 701,868 Other 817,604 815,248 920,451 Total identifiable assets $ 3,011,104 $ 2,927,172 $ 2,728,808 The following are our long-lived assets by geographic area as of December 31, 2023 and 2022 (in thousands): 2023 2022 United States $ 1,698,285 $ 1,670,676 Canada 960,109 891,375 Mexico 7,856 7,739 Total long-lived assets $ 2,666,250 $ 2,569,790 Our sales for 2023 are primarily comprised of metal sales and $5.3 million of revenue from our Yukon environmental remediation services. Our products consist of metal concentrates and carbon material, which we sell to custom smelters, metal traders and third-party processors, and unrefined bullion bars (doré), which may be sold as doré or further refined before sale to precious metal traders. Revenue is recognized upon the completion of the performance obligations and transfer of control of the product to the customer. For sales of metals from refined doré, which we currently have at Casa Berardi, the performance obligation is met, the transaction price is known, and revenue is recognized at the time of transfer of control of the agreed-upon metal quantities to the customer by the refiner. Refining, selling and shipping costs related to sales of doré and metals from doré are recorded to cost of sales as incurred. For sales of carbon materials, transfer of control takes place, the performance obligation is met, the transaction price is known, and revenue is recognized generally at the time of arrival at the customer’s facility. For concentrate sales, which we currently have at Greens Creek, Lucky Friday, and Keno Hill, the performance obligation is met, the transaction price can be reasonably estimated, and revenue is recognized generally at the time of shipment. Concentrates sold at Lucky Friday typically leave the mine and are received by the customer within the same day. However, there is a period of time between shipment of concentrates from Greens Creek and Keno Hill and their physical receipt by the customer, and judgment is required in determining when control has been transferred to the customer and the performance obligation has been met for those shipments. We have determined control is met, title is transferred and the performance obligation is met upon shipment of concentrate parcels from Greens Creek and Keno Hill because, at that time, 1) legal title is transferred to the customer, 2) the customer has accepted the parcel and obtained the ability to realize all of the benefits from the product, 3) the concentrate content specifications are known, have been communicated to the customer, and the customer has the significant risks and rewards of ownership of it, 4) it is very unlikely a concentrate parcel from Greens Creek will be rejected by a customer upon physical receipt, and 5) we have the right to payment for the parcel. Judgment is also required in identifying our concentrate sales performance obligations. Most of our concentrate sales involve “frame contracts” with smelters that can cover multiple years and specify certain terms under which individual parcels of concentrates are sold. However, some terms are not specified in the frame contracts and/or can be renegotiated as part of annual amendments to the frame contract. We have determined parcel shipments represent individual performance obligations satisfied at the point in time when control of the shipment is transferred to the customer. The consideration we receive for our concentrate sales fluctuates due to changes in metals prices between the time of shipment and final settlement with the customer. However, we are able to reasonably estimate the transaction price for the concentrate sales at the time of shipment using forward prices for the month of settlement, and previously recorded sales and accounts receivable are adjusted to estimated settlement metals prices until final settlement with the customer. Also, it is unlikely a significant reversal of revenue for any one concentrate parcel will occur. As such, we use the expected value method to price the parcels until the final settlement date occurs, at which time the final transaction price is known. At December 31, 2023, metals contained in concentrate sales and exposed to future price changes totaled 0.7 million ounces of silver, 3,490 ounces of gold, 0.4 million pounds of zinc, and 12 million pounds of lead. However, as discussed in Note 10 Sales and accounts receivable for concentrate shipments are recorded net of charges for treatment, refining, smelting losses, and other charges negotiated by us with the customers, which represent components of the transaction price. Charges are estimated by us upon shipment of concentrates based on contractual terms, and actual charges typically do not vary materially from our estimates. Costs charged by customers include fixed treatment and refining costs per ton of concentrate and may include price escalators which allow the customers to participate in the increase of lead and zinc prices above a negotiated baseline. Costs for shipping concentrates to customers are recorded to cost of sales as incurred. Sales of metal concentrates and metal products are made principally to custom smelters, third-party processors and metal traders. The percentage of metal sales contributed by each segment is reflected in the following table: Year Ended December 31, 2023 2022 2021 Greens Creek 53.7 % 46.6 % 47.6 % Lucky Friday 16.3 % 20.6 % 16.3 % Keno Hill 5.0 % —  —  Casa Berardi 24.9 % 32.7 % 30.4 % Other 0.1 % 0.1 % 5.7 % 100 % 100 % 100 % Total sales for the years ended December 31, 2023, 2022 and 2021 were as follows (in thousands): Year Ended December 31, 2023 2022 2021 Silver $ 302,284 $ 265,054 $ 293,646 Gold 274,613 298,910 362,037 Lead 72,726 83,384 75,431 Zinc 116,230 123,057 125,292 Less: Smelter and refining charges (50,909 ) (51,973 ) (48,933 ) Total metal sales 714,944 718,432 807,473 Environmental remediation services 5,283 473 —  Total sales $ 720,227 $ 718,905 $ 807,473 The following is metal sales information by geographic area based on the location of smelters and metal traders (for concentrate shipments) and the location of parent companies (for doré sales to metal traders) for the years ended December 31, 2023, 2022 and 2021 (in thousands): 2023 2022 2021 United States $ 36,307 $ 21,938 $ 71,278 Canada 375,092 406,600 419,090 Japan 52,744 51,375 63,588 Korea 127,590 107,828 203,115 China 103,534 136,514 50,945 Total, excluding gains/losses on forward contracts $ 695,267 $ 724,255 $ 808,016 Metal sales by significant product type for the years ended December 31, 2023, 2022 and 2021 were as follows (in thousands): Year Ended December 31, 2023 2022 2021 Doré and metals from doré $ 211,321 $ 255,608 $ 313,337 Carbon 4,333 2,607 4,117 Silver concentrate 356,941 329,165 345,732 Zinc concentrate 80,274 109,177 112,448 Precious metals concentrate 42,398 27,698 32,382 Total, excluding gains/losses on forward contracts $ 695,267 $ 724,255 $ 808,016 Metal sales for 2023, 2022 and 2021 included net gains of $19.7 million and net losses Note 10 Metal sales from continuing operations to significant metals customers as a percentage of total sales were as follows for the years ended December 31, 2023, 2022 and 2021: Year Ended December 31, 2023 2022 2021 Customer A 24.2 % 35.4 % 37.2 % Customer B 11.8 % 23.9 % 21.5 % Customer C 15.5 % 11.3 % 21.6 % Customer D 15.8 % 3.5 % 6.2 % Our trade accounts receivable balance related to contracts with customers was $14.7 million and $45.1 million at December 31, 2023 and 2022, respectively, and included no allowance for credit losses. Trade accounts receivable balances with significant metals customers as of December 31, 2023 and 2022 were as follows. 2023 2022 Customer B 22.2 % 57.5 % Customer D 34.8 % —  Customer E 24.2 % 3.2 % Customer F —  15.9 % Customer G —  11.8 % We have determined our contracts do not include a significant financing component. For doré sales and sales of metal from doré, payment is received at the time the performance obligation is satisfied. Payment for carbon sales is received within a relatively short period of time after the performance obligation is satisfied. The amount of consideration for concentrate sales is variable, and we receive payment for a significant portion of the estimated value of concentrate parcels within a relatively short period of time after the performance obligation is satisfied. We do not incur significant costs to obtain contracts, nor costs to fulfill contracts which are not addressed by other accounting standards. Therefore, we have not recognized an asset for such costs as of December 31, 2023 and 2022.

Note 5 - Environmental and Recl

Note 5 - Environmental and Reclamation Activities	12 Months Ended
	Dec. 31, 2023
Environmental and Reclamation Activities [Abstract]
Environmental and Reclamation Activities	Note 5: Environmental and Reclamation Activities The liabilities accrued for our reclamation and closure costs at December 31, 2023 and 2022 were as follows (in thousands): 2023 2022 Operating properties: Greens Creek $ 39,893 $ 37,212 Lucky Friday 12,022 13,343 Keno Hill 3,360 4,514 Casa Berardi 11,157 11,352 Non-operating properties: Nevada Operations 30,539 28,171 San Sebastian 2,061 1,989 Troy mine 5,238 6,980 Johnny M 10,148 8,961 All other sites 6,039 4,477 Total 120,457 116,999 Reclamation and closure costs, current (9,660 ) (8,591 ) Reclamation and closure costs, long-term $ 110,797 $ 108,408 The activity in our accrued reclamation and closure cost liability for the years ended December 31, 2023, 2022 and 2021 was as follows (in thousands): Balance at January 31, 2021 $ 116,048 Accruals for estimated costs 4,952 Accretion expense 6,454 Revision of estimated cash flows due to changes in reclamation plans (8,781 ) Payment of reclamation obligations (5,442 ) Balance at December 31, 2021 113,231 Accruals for estimated costs 2,874 Accretion expense 5,995 Revision of estimated cash flows due to changes in reclamation plans 452 Payment of reclamation obligations (5,553 ) Balance at December 31, 2022 116,999 Accruals for estimated costs 2,952 Accretion expense 7,740 Revision of estimated cash flows due to changes in reclamation plans (29 ) Payment of reclamation obligations (7,205 ) Balance at December 31, 2023 $ 120,457 Asset Retirement Obligations Below is a reconciliation as of December 31, 2023 and 2022 (in thousands) of the asset retirement obligations (“ARO”) which are included in our total accrued reclamation and closure costs of $120.5 million and $117.0 million, respectively, discussed above. The estimated reclamation and closure costs were discounted using credit adjusted, risk-free interest rates ranging from 5.75% to 14.5% from the time we incurred the obligation to the time we expect to pay the retirement obligation. 2023 2022 Balance January 1 $ 96,620 $ 95,033 Changes in obligations due to changes in reclamation plans (29 ) 452 Accretion expense 7,740 5,995 Payment of reclamation obligations (5,264 ) (4,860 ) Balance at December 31 $ 99,067 $ 96,620 Payments for reclamation obligations were incurred at Lucky Friday, Greens Creek, Keno Hill and our former Mexico operation San Sebastian. The AROs related to the changes described above were discounted using a credit adjusted, risk-free interest rate of between 2.75% and 7.5% and inflation rates ranging from 2% to 4%.

Note 6 - Employee Benefit Plans

Note 6 - Employee Benefit Plans	12 Months Ended
	Dec. 31, 2023
Defined Benefit Plan [Abstract]
Employee Benefit Plans	Note 6: Employee Benefit Plans Pensions and Other Post-retirement Plans We sponsor defined benefit pension plans covering substantially all U.S. employees and a Supplemental Excess Retirement Plan (“SERP”) Pension Benefits 2023 2022 Change in benefit obligation: Benefit obligation at beginning of year $ 148,143 $ 195,862 Service cost 3,794 6,262 Interest cost 7,974 5,476 Change due to mortality change 643 486 Change due to discount rate change (3,635 ) (54,977 ) Actuarial return 401 1,841 Benefits paid (7,894 ) (6,807 ) Benefit obligation at end of year 149,426 148,143 Change in fair value of plan assets: Fair value of plan assets at beginning of year 175,159 189,874 Actual return on plan assets 7,937 (18,238 ) Employer contributions 1,756 10,330 Benefits paid (7,894 ) (6,807 ) Fair value of plan assets at end of year 176,958 175,159 Funded status at end of year $ 27,532 $ 27,016 The following table provides the amounts recognized in the consolidated balance sheets as of December 31, 2023 and 2022 (in thousands): Pension Benefits 2023 2022 Non-current assets: Accrued benefit asset $ 28,399 $ 27,806 Current pension liability Accrued benefit liability (867 ) (790 ) Accumulated other comprehensive loss 8,031 6,446 Net amount recognized $ 35,563 $ 33,462 The benefit obligation and prepaid benefit costs were calculated by applying the following weighted average assumptions: Pension Benefits 2023 2022 Discount rate: net periodic pension cost 5.77 % 5.54 % Discount rate: projected benefit obligation 5.77 % 5.54 % Expected rate of return on plan assets 7.25 % 7.25 % Rate of compensation increase: net periodic pension cost 5%/2%   (1) 5%/2 % Rate of compensation increase: projected benefit obligation 4%/3%/2%   (2)        5%/2 % (1) 5% for 2023 and 2% per year thereafter. (2) 4% for 2023, 3% for 2024 and 2% per year thereafter. The above assumptions were calculated based on information as of December 31, 2023 and 2022, the measurement dates for the plans. The discount rate is based on the yield curve for investment-grade corporate bonds as published by the U.S. Treasury Department. The expected rate of return on plan assets is based upon consideration of the plan’s current asset mix, historical long-term return rates and the plan’s historical performance. Our current assumption for the rate on plan assets is 7.25%. The vested benefit obligation is determined based on the actuarial present value of benefits to which employees are currently entitled, based on employees’ expected date of separation or retirement. Net periodic pension cost for the plans consisted of the following in 2023, 2022, and 2021 (in thousands): Pension Benefits 2023 2022 2021 Service cost $ 3,794 $ 6,262 $ 5,820 Interest cost 7,974 5,476 4,990 Expected return on plan assets (12,428 ) (13,452 ) (9,252 ) Amortization of prior service cost 500 511 394 Amortization of net (loss) gain (188 ) 2,049 4,502 Net periodic pension (benefit) cost $ (348 ) $ 846 $ 6,454 The service cost component of net periodic pension cost is included in the same line items of our consolidated financial statements as other employee compensation costs. The net (benefit)/expense of ($4.1 million), ($5.4 million) and $0.6 million for 2023, 2022 and 2021, respectively, related to all other components of net periodic pension cost is included in other (expense) income on our consolidated statements of operations and comprehensive (loss) income. Each defined benefit pension plan’s statement of investment policy delineates the responsibilities of the board, the committee which administers the plan, the investment manager(s), and investment adviser/consultant, and provides guidelines on investment management. Investment objectives are established for each of the asset categories included in the pension plans with comparisons of performance against appropriate benchmarks. Each plan’s policy calls for investments to be supervised by qualified investment managers. The investment managers are monitored on an ongoing basis by our outside consultant, with formal reporting to us and the consultant performed each quarter. The policy sets forth the following allocation of assets: Target Maximum Large cap U.S. equities 17 % 20 % Small cap U.S. equities 8 % 10 % Non-U.S. equities 25 % 30 % U.S. Fixed income 18 % 23 % Emerging markets debt 5 % 8 % Real estate 15 % 18 % Absolute return 5 % 7 % Company stock/Real return 7 % 13 % Each defined benefit pension plan’s statement of investment policy and objectives aspires to achieve the assumed long term rate of return on plan assets established by the plan’s actuary plus one percent. Accounting guidance has established a hierarchy of assets measured at fair value on a recurring basis. The three levels included in the hierarchy are: Level 1: quoted prices in active markets for identical assets or liabilities Level 2: significant other observable inputs Level 3: significant unobservable inputs The fair values by asset category in each pension plan, along with their hierarchy levels, are as follows as of December 31, 2023 (in thousands): Hecla plans Lucky Friday Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Investments measured at fair value Interest-bearing cash $ 525 $ —  $ —  $ 525 $ 117 $ —  $ —  $ 117 Common stock 19,933 —  —  19,933 2,872 —  —  2,872 Mutual funds 83,504 —  —  83,504 12,792 —  —  12,792 Total investments in the fair value hierarchy 103,962 —  —  103,962 15,781 —  —  15,781 Investments measured at net asset value Real estate funds —  —  —  18,029 —  —  —  4,173 Common collective funds —  —  —  28,386 —  —  —  6,627 Total investments measured at net asset value —  —  —  46,415 —  —  —  10,800 Total fair value $ 103,962 $ —  $ —  $ 150,377 $ 15,781 $ —  $ —  $ 26,581 The fair values by asset category in each defined benefit pension plan, along with their hierarchy levels, were as follows as of December 31, 2022 (in thousands): Hecla plans Lucky Friday Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Investments measured at fair value Interest-bearing cash $ 743 $ —  $ —  $ 743 $ 133 $ —  $ —  $ 133 Common stock 21,678 —  —  21,678 3,295 —  —  3,295 Mutual funds 75,868 —  —  75,868 11,905 —  —  11,905 Total investments in the fair value hierarchy 98,289 —  —  98,289 15,333 —  —  15,333 Investments measured at net asset value Real estate funds —  —  —  23,967 —  —  —  5,550 Hedge funds —  —  —  —  —  —  —  —  Common collective funds —  —  —  26,114 —  —  —  5,906 Total investments measured at net asset value —  —  —  50,081 —  —  —  11,456 Total fair value $  98,289 $ —  $ —  $ 148,370 $ 15,333 $ —  $ —  $ 26,789 Common stock investments included investments in Hecla common stock as of December 31, 2023 of $19.9 million (2022: $21.7 million for the Hecla Plans and $2.9 million (2022: $3.3 million) for the Lucky Friday plan. Generally, investments are valued based on information provided by fund managers to each plan’s trustee as reviewed by management and its investment advisers. Mutual funds and equities are valued based on available exchange data. Commingled equity funds consist of publicly-traded investments. Fair value for real estate funds, hedge funds and common collective equity funds is measured using the net asset value per share (or its equivalent) practical expedient (“NAV”), and has not been categorized in the fair value hierarchy. There are no unfunded commitments related to these investments. There are no restrictions on redemptions of these funds as of December 31, 2023, except as limited by the redemption terms discussed below. The following summarizes information on the asset classes measured using NAV: Investment strategy Redemption terms Real estate funds Invest in real estate properties among the four major property types (office, industrial, retail and multi-family) Allowed quarterly with notice of between 45 and 60 days Hedge funds Invest in a variety of asset classes which aim to diversify sources of returns Allowed quarterly with notice of 90 days Common collective funds Invest in U.S. large cap or small/medium cap public equities in actively traded managed equity portfolios Allowed daily or with notice of 30 days The following are estimates of future benefit payments, which reflect expected future service as appropriate, related to our pension plans (in thousands): Year Ending December 31, Pension 2024 $ 8,886 2025 10,031 2026 10,005 2027 9,981 2028 10,321 Years 2029-2033 51,163 During 2023 and 2022 we contributed $1.0 million and $5.5 million in shares of our common stock to our defined benefit pension plans, respectively. During 2022 we also contributed $4.2 million in shares of our common stock to our SERP, respectively. We do not expect to be required to contribute to our defined benefit plans in 2024, but we may choose to do so. The following table indicates whether our pension plans had accumulated benefit obligations (“ABO”) in excess of plan assets, or plan assets exceeded ABO (amounts are in thousands). 2023 2022 Plan Assets Plan Assets Projected benefit obligation $ 149,426 $ 148,143 Accumulated benefit obligation 146,336 144,816 Fair value of plan assets 176,958 175,159 For the pension plans, the following amounts are included in “Accumulated other comprehensive income, net” on our balance sheet as of December 31, 2023, that have not yet been recognized as components of net periodic benefit cost (in thousands): Pension Unamortized net loss $ 7,462 Unamortized prior service cost 579 Except for a limited number of employees who participate in the SERP, non-U.S. employees are not eligible to participate in the defined benefit pension plans that we maintain for U.S. employees. Canadian employees participate in Canada’s public retirement income system, which includes the following components: (i) the Canada (or Quebec) Pension Plan, which is an employee and employer contributory, earnings-related social insurance program, and (ii) the Old Age Security program. Mexican employees participate in Mexico’s public retirement income system, which is based on contributions the employee, employer and the government submit to the retirement savings system. The system is administered through savings accounts managed by private fund managers selected by the participant. Capital Accumulation Plans Our Capital Accumulation Plan is available to all U.S. salaried and certain hourly employees upon employment. We make contribution common We also maintain a 401(k) plan that is available to all hourly employees at Lucky Friday after completion of six months of service. When an employee meets eligibility requirements we make a matching cash contribution of 55% of the employee’s contribution up to, but not exceeding, 5% of the employee’s eligible earnings. Our matching contributions were $1.3 million, $0.6 million and $0.5 million in 2023, 2022 and 2021, respectively.

Note 7 - Income and Mining Taxe

Note 7 - Income and Mining Taxes	12 Months Ended
	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Income and Mining Taxes	Note 7: Income and Mining Taxes Major components of our income and mining tax benefit (provision) for the years ended December 31, 2023, 2022 and 2021 are as follows (in thousands): 2023 2022 2021 Current: Domestic $ (3,846 ) $ (3,915 ) $ (7,073 ) Foreign (3,322 ) (5,119 ) (6,316 ) Total current income and mining tax provision (7,168 ) (9,034 ) (13,389 ) Deferred: Domestic (17,058 ) 2,064 43,708 Foreign 23,004 14,536 (750 ) Total deferred income and mining tax benefit 5,946 16,600 42,958 Total income and mining tax (provision) benefit $ (1,222 ) $   7,566 $ 29,569 Domestic and foreign components of income (loss) before income and mining taxes for the years ended December 31, 2023, 2022 and 2021 are as follows (in thousands): 2023 2022 2021 Domestic $ 43,745 $ (6,343 ) $ 38,003 Foreign (126,740 ) (38,571 ) (32,477 ) Total $ (82,995 ) $ (44,914 ) $ 5,526 The annual tax benefit (provision) is different from the amount that would be provided by applying the statutory federal income tax rate to our pretax income (loss). The reasons for the difference are (in thousands): 2023 2022 2021 Computed “statutory” benefit (provision) $ 17,429 21 % $ 9,432 21 % $ (1,161 ) 21 % Percentage depletion 4,205 5 8,542 19 8,076 (146 ) Change in valuation allowance (20,016 ) (24 ) (8,113 ) (18 ) 38,058 (689 ) State taxes, net of federal tax benefit (2,731 ) (3 ) (158 ) —  965 (17 ) Foreign currency remeasurement of monetary assets and liabilities (4,155 ) (5 ) 4,559 10 (3,625 ) 66 Rate differential on foreign earnings 6,553 8 1,515 3 2,445 (44 ) Compensation (1,636 ) (2 ) 173 0 1,094 (20 ) Mining and other taxes (1,359 ) (2 ) (6,609 ) (15 ) (13,799 ) 250 Other 488 1 (1,775 ) (3 ) (2,484 ) 45 Total (provision) benefit $ (1,222 ) (1 )% $ 7,566 17 % $ 29,569 (535 )% At December 31, 2023 and 2022, the net deferred tax liability was $102.0 million and $104.7 million, respectively. The individual components of our net deferred tax assets and liabilities are reflected in the table below (in thousands). December 31, 2023 2022 Deferred tax assets: Accrued reclamation costs $ 33,451 $ 33,007 Deferred exploration 22,341 22,584 Foreign net operating losses 52,091 71,391 Domestic net operating losses 214,137 211,381 Foreign exchange loss 22,247 24,235 Foreign tax credit carryforward 2,026 2,493 Miscellaneous 35,060 39,628 Total deferred tax assets 381,353 404,719 Valuation allowance (100,910 ) (72,856 ) Total deferred tax assets 280,443 331,863 Deferred tax liabilities: Miscellaneous (12,950 ) (9,020 ) Properties, plants and equipment (369,445 ) (427,584 ) Total deferred tax liabilities (382,395 ) (436,604 ) Net deferred tax liability $ (101,952 ) $ (104,741 ) We evaluated the positive and negative evidence available to determine the amount of valuation allowance required on our deferred tax assets. At December 31, 2023, the balance of our valuation allowances was $100.9 million compared to $72.9 million at December 31, 2022. We retained a balance of valuation allowance on Hecla US operations at December 31, 2023 of $4.3 million for state loss carryforwards and foreign tax credits. In the Nevada U.S. Group, the scheduling of reversing deferred tax assets and liabilities determined that existing tax loss carryforwards subject to the limitation of eighty percent reduction of taxable income may be limited in the future. A valuation allowance is recorded for $35.1 million. Due to cessation of operations in Mexico at the end of 2020, we are uncertain when a source of taxable income valuation 2023 2022 2021 Balance at beginning of year $ (72,856 ) $ (39,152 ) $ (77,210 ) Valuation allowance on deferred tax assets acquired with the ATAC (2023) and Alexco (2022) acquisitions (8,077 ) (25,591 ) —  Increase related to non-recognition of deferred tax assets due to uncertainty of recovery and increase related to non-utilization of net operating loss carryforwards (21,114 ) (13,256 ) (20,304 ) Decrease related to either or a combination of (i) utilization, (ii) release due to future benefit, and (iii) expiration of deferred tax assets as applicable 1,137 5,143 58,362 Balance at end of year $ (100,910 ) $ (72,856 ) $ (39,152 ) As of December 31, 2023, for U.S. income tax purposes, we have federal and state net operating loss carryforwards of $893.6 million and $418.0 million, respectively. U.S. net operating loss carryforwards for periods arising before January 1, 2018 have a 20-year expiration period, the earliest of which could expire in 2028. U.S. net operating loss carryforwards of $408.2 million arising in 2018 and future periods have an indefinite carryforward period. We have foreign and provincial net operating loss carryforwards of $188.5 million each, which expire between 2031 and 2043. Our utilization of U.S. net operating loss carryforwards may be subject to annual limitations if there is a change in control as defined under Internal Revenue Code Section 382. As of December 31, 2023, no change in control has occurred in the Hecla U.S. group. Net operating losses acquired with the Nevada U.S. Group are subject to limitation under Internal Revenue Code Section 382. However, the annual limitation is not expected to have a material impact on our ability to utilize the losses. We have Internal Revenue Code Section 163(j) interest expense limitation carryforwards of $3.4 million in Hecla US as of December 31, 2023. The carryforward results in a future tax benefit of $0.7 million and has an indefinite carryforward period. In the Nevada U.S. Group we have 163(j) interest expense limitation carryforwards of $20.6 million as of December 31, 2023. The carryforward results in a future tax benefit of $4.3 million and has an indefinite carryforward period. As of December 31, 2023, we have foreign tax credit carryforwards of $2.0 million. The carryforward period for foreign tax credits is 10 years. Our foreign tax credits will expire between 2024 and 2026. We file income tax returns in the U.S. federal jurisdiction, and various state and foreign jurisdictions. We are no longer subject to income tax examinations by U.S. federal and state tax authorities for years prior to 2008, or examinations by foreign tax authorities for years prior to 2017. We are currently under examination in certain local Canadian tax jurisdictions. However, we do not anticipate any material adjustments. We had no unrecognized tax benefits as of December 31, 2023 or 2022. Due to the net operating loss carryover provision, coupled with the lack of any unrecognized tax benefits, we have not provided for any interest or penalties associated with any unrecognized tax benefits. If interest and penalties were to be assessed, our policy is to charge interest to interest expense, and penalties to other operating expense. It is not anticipated that there will be any significant changes to unrecognized tax benefits within the next 12 months.

Note 8 - (Loss) Income per Comm

Note 8 - (Loss) Income per Common Share	12 Months Ended
	Dec. 31, 2023
Notes To Financial Statements [Abstract]
(Loss) Income per Common Share	Note 8: (Loss) Income per Common Share We calculate basic income (loss) per share using, as the denominator, the weighted average number of common shares outstanding during the period. Diluted income (loss) per share uses, as its denominator, the weighted average number of common shares outstanding during the period plus the effect of potential dilutive common shares during the period using the treasury stock method for options, warrants, and restricted stock units, and if-converted method for convertible preferred shares. Potential dilutive common shares include outstanding restricted stock unit awards, stock units, warrants and convertible preferred stock for periods in which we have reported net income. For periods in which we reported net losses, potential dilutive common shares The following table represents net income (loss) per common share – basic and diluted (in thousands, except income (loss) per share): Year ended December 31, 2023 2022 2021 Numerator Net (loss) income $ (84,217 ) $ (37,348 ) $ 35,095 Preferred stock dividends (552 ) (552 ) (552 ) Net (loss) income applicable to common stockholders $ (84,769 ) $ (37,900 ) $ 34,543 Denominator Basic weighted average common shares 605,668 557,344 536,192 Dilutive stock options, restricted stock units, and warrants —  —  5,984 Diluted weighted average common shares 605,668 557,344 542,176 Basic (loss) income per common share $ (0.14 ) $ (0.07 ) $ 0.06 Diluted (loss) income per common share $ (0.14 ) $ (0.07 ) $ 0.06 For the year ended December 31, 2021, the calculation of diluted income per common share included (i) 2,317,007 unvested restricted stock units during the period, (ii) 1,557,503 warrants to purchase one share of common stock and (iii) 2,166,964 deferred shares that were dilutive. For the years ended December 31, 2023 and 2022, all outstanding restricted stock units, warrants and deferred shares were excluded from the computation of diluted loss per share, as our reported net losses for those periods would cause their conversion and exercise to have no effect on the calculation of loss per share.

Note 9 - Debt, Credit Facility

Note 9 - Debt, Credit Facility and Leases	12 Months Ended
	Dec. 31, 2023
Line of Credit Facility [Abstract]
Debt, Credit Facility and Leases	Note 9: Debt, Credit Facility and Leases Debt Summary Our debt as of December 31, 2023 and 2022 consisted of our 7.25% Senior Notes due February 15, 2028 (“Senior Notes”) and our December 31, 2023 Senior Notes IQ Notes Total Principal $ 475,000 $ 36,473 $ 511,473 Unamortized discount/premium and issuance costs (3,730 ) 257 (3,473 ) Long-term debt balance $ 471,270 $ 36,730 $ 508,000 December 31, 2022 Senior Notes IQ Notes Total Principal $ 475,000 $ 35,614 $ 510,614 Unamortized discount/premium and issuance costs (4,640 ) 392 (4,248 ) Long-term debt balance $ 470,360 $ 36,006 $ 506,366 The following table summarizes the scheduled annual future payments, including interest, for the Senior Notes and IQ Notes as of December 31, 2023 (in thousands). The amounts for the IQ Notes are stated in USD based on the USD/CAD exchange rate as of December 31, 2023. Senior Notes IQ Notes 2024 $ 34,438 $ 2,376 2025 34,438 37,704 2026 34,438 —  2027 34,438 —  2028 479,303 —  2029 —  —  Total $ 617,055 $ 40,080 Senior Notes On February 19, 2020, we completed an offering of $475 million in aggregate principal amount of our Notes registration The Senior Notes are recorded net of a 1.16% initial purchaser discount totaling $5.5 million. The Senior Notes bear interest at a rate of 7.25% per year from the date of issuance or from the most recent payment date on which interest has been paid or provided for. Interest on the Senior Notes is payable on February 15 and August 15 of each year, commencing August 15, 2020. During 2023, 2022 and 2021, interest expense on the statement of operations and comprehensive (loss) income related to the Senior Notes and 2021 Notes and amortization of the initial purchaser discount and fees related to the issuance of the Senior Notes and 2021 Notes totaled $34.4 million, $35.4 million and $35.4 million, respectively. The Senior Notes are guaranteed on a senior unsecured basis by certain of our subsidiaries (the “Guarantors”). The Senior Notes and the guarantees are, respectively, Hecla’s and the Guarantors’ general senior unsecured obligations and are subordinated to all of Hecla’s and the Guarantors’ existing and future secured debt to the extent of the assets securing that secured debt. In addition, the Senior Notes are effectively subordinated to all of the liabilities of Hecla’s subsidiaries that are not guaranteeing the Senior Notes, to the extent of the assets of those subsidiaries. The Senior Notes will be redeemable in whole or in part, at any time and from time to time on or after February 15, 2023, on the redemption dates and at the redemption prices specified in the Indenture, plus accrued and unpaid interest, if any, to the date of redemption. After February 15, 2023, we may redeem some or all of the Senior Notes at the following redemption prices (expressed as a percentage of the principal amount) plus accrued interest, if any, to the redemption date: (i) 105.438% for the twelve-month period beginning after February 15, 2023, (ii) 103.625% for the twelve-month period beginning after February 15, 2024, (iii) 101.813% for the twelve-month period beginning after February 15, 2025, and (iv) 100.000% after February 15, 2026. Since February 15, 2023, we may redeem up to 35% of the Senior Notes with the net cash proceeds of certain equity offerings. Upon the occurrence of a change of control (as defined in the Indenture), each holder of Senior Notes will have the right to require us to purchase all or a portion of such holder’s Senior Notes pursuant to a change of control offer (as defined in the Indenture), at a purchase price equal to 101% of the principal amount thereof plus accrued and unpaid interest, if any, to the date of purchase, subject to the rights of holders of the Senior Notes on the relevant record date to receive interest due on the relevant interest payment date. IQ Notes On July 9, 2020, we entered into a note purchase agreement pursuant to which we issued CAD$50 million (USD$36.8 million at the Credit Agreement On July 21, 2022, we entered into a Credit Agreement (“Credit Agreement”) with various financial institutions (the “Lenders”), with Bank of We are also required to pay a commitment fee of between 0.45% to 0.78750%, depending on our net leverage ratio. Letters of credit issued under the Credit Agreement bear a fee between 2.00% and 3.50% based on our net leverage ratio, as well as a fronting fee to each issuing bank at an agreed upon rate per annum on the average daily dollar amount of our letter of credit exposure. During 2023 we paid $0.6 million as commitment fees under the Credit Agreement included as part of Interest expense, net. Hecla Mining Company and certain of our subsidiaries are the borrowers under the Credit Agreement, while certain of our other subsidiaries are guarantors of the borrowers’ obligations under the Credit Agreement. As further security, the credit facility is collateralized by a mortgage on the Greens Creek mine, the equity interests of subsidiaries that own the Greens Creek mine or are part of the Greens Creek Joint Venture and our subsidiary Hecla Admiralty Company (the “Greens Creek Group”), and by all of the Green Creek Group’s rights and interests in the Greens Creek Joint Venture Agreement, and in all assets of the joint venture and of any member of the Greens Creek Group. As of December 31, 2023, $6.9 million (2022: $7.8 million) was used for letters of credit, and $128.0 million (2022: Undrawn) was drawn on the facility leaving $15.1 million available for borrowing. We believe we were in compliance with all covenants under the Credit Agreement as of December 31, 2023. Finance Leases We have entered into various lease agreements, primarily for equipment at our operations, which we have determined to be finance leases. At December 31, 2023, the total liability associated with the finance leases, including certain purchase option amounts, was $26.8 million (2022: $20.9 million), with $9.8 million (2022: $9.5 million) of the liability classified as current properties, plants equipment December 31 At December 31, 2023, the annual maturities of finance lease commitments, including interest, were (in thousands): Twelve-month period ending December 31, 2024 $ 11,172 2025 7,744 2026 5,757 2027 5,119 2028 —  Total 29,792 Less: effect of interest (2,977 ) Net finance lease obligation $ 26,815 Operating Leases We have entered into various lease agreements, primarily for equipment, buildings and other facilities, and land at our operations corporate Other Current Liabilities Other Non-Current Liabilities At December 31, 2023, the annual maturities of undiscounted operating lease payments, including assumed extensions beyond the current lease terms, were (in thousands): Twelve-month period ending December 31, 2024 $ 1,290 2025 1,278 2026 1,278 2027 1,171 2028 1,033 More than 5 years 5,566 Total 11,616 Less: effect of discounting (2,982 ) Operating lease liability $ 8,634

Note 10 - Derivative Instrument

Note 10 - Derivative Instruments	12 Months Ended
	Dec. 31, 2023
Disclosure Text Block [Abstract]
Derivative Instruments	Note 10: Derivative Instruments General Our current risk management policy provides that up to 75% of five years of our foreign currency, lead and zinc metals price and silver and gold These instruments expose us to (i) credit risk in the form of non-performance by counterparties for contracts in which the contract price exceeds the spot price of the hedged commodity or foreign currency and (ii) price risk to the extent that the spot price or currency exchange rate exceeds the contract price for quantities of our production and/or forecasted costs covered under contract positions. Foreign Currency Our wholly-owned subsidiaries owning the Casa Berardi operation and Keno Hill operation are USD-functional entities which incur As of December 31, 2023 and 2022, we recorded the following balances for the fair value of the contracts (in millions): December 31, Balance sheet line item: 2023 2022 Other current assets $ 2.7 $ 1.1 Other non-current assets 2.0 0.4 Current derivative liabilities (1.1 ) (4.0 ) Non-current derivative liabilities (0.4 ) (3.6 ) Net unrealized gains of $1.3 million related to the effective portion of the hedges were included in accumulated other comprehensive income (loss) as of December 31, 2023. Unrealized gains and losses will be transferred from accumulated other comprehensive loss to current earnings as the underlying operating expenses are recognized. We estimate $0.2 million in net unrealized gains included in accumulated other comprehensive income (loss) as of December 31, 2023 will be reclassified to current earnings in the next twelve months. Net realized loses of $3.6 million on contracts related to underlying expenses which have been recognized were transferred from accumulated other comprehensive loss and included in cost of sales and other direct production costs for the year ended December 31, 2023. Net unrealized gains of $1.2 million related to contracts not designated as hedges and no net unrealized gains or losses related to ineffectiveness of the hedges were included in fair value adjustments, net on our consolidated statements of operations and comprehensive (loss) income for the year ended December 31, 2023. Metals Prices We are currently using financially-settled forward contracts to manage the exposure to • changes in prices of silver, gold, zinc and lead contained in our concentrate shipments between the time of shipment and final settlement; and • changes in prices of zinc and lead (but not silver and gold) contained in our forecasted future concentrate shipments. The following tables summarize the quantities of metals committed under forward sales contracts at December 31, 2023 and 2022: December 31, 2023 Ounces/pounds under contract (in 000’s) Average price per ounce/pound Silver Gold Zinc Lead Silver Gold Zinc Lead Contracts on provisional sales 2023 settlements 735 3 441 15,542 24.40 2,045 1.51 1.00 Contracts on forecasted sales 2024 settlements —  —  —  56,713 N/A N/A N/A 0.98 2025 settlements —  —  —  49,273 N/A N/A N/A 0.98 December 31, 2022 Ounces/pounds under contract (in 000’s) Average price per ounce/pound Silver Gold Zinc Lead Silver Gold Zinc Lead Contracts on provisional sales 2022 settlements 3,124 8 18,629 11,960 $ 21.55 $ 1,795 $ 1.38 $ 0.98 Contracts on forecasted sales 2022 settlements —  —  37,533 75,618 N/A N/A $ 1.34 $ 1.00 2023 settlements —  —  —  45,856 N/A N/A N/A $ 0.99 Effective November 1, 2021, we designated the contracts for lead and zinc contained in our forecasted future shipments as hedges for accounting purposes, with gains and losses deferred to accumulated other comprehensive loss until the hedged product ships. Prior to November 1, 2021, these contracts did not qualify for hedge accounting and were therefore marked-to-market through earnings each period. The forward contracts for silver and gold contained in our concentrate shipments have not been designated as hedges and are marked-to-market through earnings each period. At December 31, 2023 and 2022, we recorded the following balances for the fair value of forward contracts held at that time (in millions): December 31, 2023 December 31, 2022 Balance sheet line item: Contracts Contracts liability Net asset Contracts Contracts Net asset Other current assets $ 3.1 $ —  $ 3.1 $ 1.2 $ —  $ 1.2 Other non-current assets 1.5 —  1.5 0.1 —  0.1 Current derivatives liability —  (0.1 ) (0.1 ) —  (12.1 ) (12.1 ) Non-current derivatives liability $ —  $ —  $ —  $ —  $ (2.5 ) $ (2.5 ) Net realized and unrealized gains of $14.6 million related to the effective portion of the contracts designated as hedges were included in accumulated other comprehensive loss as of December 31, 2023. Realized and unrealized gains and losses will be transferred from accumulated other comprehensive loss to current earnings as the underlying forecasted sales transaction is recognized. We estimate $12.6 million in net realized and unrealized gains included in accumulated other comprehensive loss as of December 31, 2023 will be reclassified to current earnings in the next twelve months. The realized gains arose due to cash settlement of zinc and lead contracts in 2023 and zinc contracts in 2022 prior to maturity for proceeds of $8.5 million and $17.4 million, respectively. There were no early settlements in 2021. We recognized a net gain of $19.7 million, including a $20.6 million gain transferred from accumulated other comprehensive income (loss) during 2023 on the contracts utilized to manage exposure to changes in prices of metals in our concentrate shipments, which is included in sales of products. The net loss recognized on the contracts offsets gains related to price adjustments on our provisional concentrate sales due to changes to silver, gold, lead and zinc prices between the time of sale and final settlement. We recognized a $32.9 million net loss as prices Credit-risk-related Contingent Features Certain of our derivative contracts contain cross default provisions which provide that a default under our revolving credit agreement would cause a default under the derivative contract. As of December 31, 2023, we have not posted any collateral related to these contracts. The fair value of derivatives in a net liability position related to these arrangements was $1.6 million as of December 31, 2023, and includes accrued interest but excludes any adjustment for nonperformance risk. If we were in breach of any of these provisions at December 31, 2023, we could have been required to settle our obligations under the agreements at their termination value of $1.6 million.

Note 11- Fair Value Measurement

Note 11- Fair Value Measurement	12 Months Ended
	Dec. 31, 2023
Disclosure Text Block [Abstract]
Fair Value Measurement	Note 11: Fair Value Measurement Fair value adjustments, net is comprised of the following (in thousands): Year Ended December 31, 2023 2022 2021 Gain (loss) on derivative contracts $ 3,168 $ 844 $ (32,655 ) Unrealized investments equity securities (243 ) (5,632 ) (4,295 ) Gain on disposition exchange of investments —  65 1,158 Total fair value adjustments, net $ 2,925 $ (4,723 ) $ (35,792 ) Accounting guidance has established a hierarchy for inputs used to measure assets and liabilities at fair value on a recurring basis. The fair value hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets and liabilities (Level 1) and the lowest priority to unobservable inputs (Level 3). The three levels included in the hierarchy are: Level 1: quoted prices in active markets for identical assets or liabilities; Level 2: significant other observable inputs; and Level 3: significant unobservable inputs. The table below sets forth our assets and liabilities (in thousands) that were accounted for at fair value on a recurring basis and the fair value calculation input hierarchy level that we have determined applies to each asset and liability category. See Note 6 Balance at Balance at Input Assets: Cash and cash equivalents: Money market funds and other bank deposits $ 106,374 $ 104,743 Level 1 Current and non-current investments: Equity securities 32,284 24,018 Level 1 Trade accounts receivable: Receivables from provisional concentrate sales 14,740 45,146 Level 2 Derivative contracts - other current assets and other non-current assets: Metal forward contracts 4,698 1,309 Level 2 Foreign exchange contracts 4,657 1,518 Level 2 Restricted cash and cash equivalents balances: Certificates of deposit and other deposits 1,165 1,164 Level 1 Total assets $ 163,918 $ 177,898 Liabilities Derivative contracts - current and non-current derivative liabilities: Metal forward contracts $ 40 $ 14,643 Level 2 Foreign exchange contracts 1,508 7,548 Level 2 Total liabilities $ 1,548 $ 22,191 Cash and cash equivalents consist primarily of money market funds and are valued at cost, which approximates fair value. Current and non-current restricted cash and cash equivalents balances consist primarily of certificates of deposit, U.S. Treasury securities, and other deposits and are valued at cost, which approximates fair value. Our non-current investments consist of marketable equity securities of companies in the mining industry which are valued using quoted market prices for each security. Trade accounts receivable include amounts due to us for shipments of concentrates, doré, metals sold from doré, and carbon material sold to customers. Revenues and the corresponding accounts receivable for sales of metals products are recorded when title and risk of loss transfer to the customer (generally at the time of ship loading, or at the time of arrival at the customer for trucked products). Sales of concentrates are recorded using estimated forward prices for the anticipated month of settlement applied to our estimate of payable metal quantities contained in each shipment. Sales are recorded net of estimated treatment and refining charges, which are also impacted by changes in metals prices and quantities of contained metals. We estimate the prices at which sales of our concentrates will be settled due to the time elapsed between shipment and final settlement with the customer. Receivables for previously recorded concentrate sales are adjusted to reflect estimated forward metals prices at the end of each period until final settlement by the customer. We obtain the forward metals prices used each period from a pricing service. Changes in metals prices between shipment and final settlement result in changes to revenues previously recorded upon shipment. We use financially-settled forward contracts to manage exposure to changes in the exchange rate between the USD and CAD, and the impact on CAD-denominated operating and capital costs incurred at our Casa Berardi unit and Keno Hill development project (see Note 10 We use financially-settled forward contracts to manage the exposure to changes in prices of silver, gold, zinc and lead contained in our concentrate shipments that have not reached final settlement. We also use financially-settled forward contracts to manage the exposure to changes in prices of zinc and lead (but not silver and gold) contained in our forecasted future concentrate shipments (see Note 10 At December 31, 2023, our Senior Notes and IQ Notes were recorded at their carrying values of $478.7 million and $36.6 million, respectively, net of unamortized initial purchaser discount/premium and issuance costs. The estimated fair values of our Senior Notes and IQ Notes were $481.6 million and $37.2 million, respectively, at December 31, 2023. Quoted prices, which we consider to be Level 1 inputs, are utilized to estimate the fair value of the Senior Notes. Unobservable inputs which we consider to be Level 3, including an assumed current annual yield of 6.63%, are utilized to estimate the fair value of the IQ Notes. The credit agreement, which we consider to be Level 1 in the fair value hierarchy, has a carrying and fair value of $128 million. See Note 11

Note 12 - Stockholders' Equity

Note 12 - Stockholders' Equity	12 Months Ended
	Dec. 31, 2023
Equity [Abstract]
Stockholders' Equity	Note 12: Stockholders’ Equity Common Stock Subject to the rights of the holders of any outstanding shares of preferred stock, each share of common stock is entitled to: (i) one on all Dividends In September 2011 and February 2012, our Board of Directors (“Board”) adopted a common stock dividend policy that has two components: (1) a dividend that links the amount of dividends on our common stock to our average quarterly realized silver price in the preceding quarter, and (2) a minimum annual dividend of $0.01 per share of common stock, in each case, payable quarterly, if and when declared. In September 2020, we amended the dividend policy to (1) reduce the minimum quarterly realized silver price threshold for the first component above from $30 per ounce to $25 per ounce, and (2) increased the minimum annual dividend from $0.01 per share to $0.015 per share. In each of May and September 2021, our Board approved an increase in our silver-linked dividend policy by $0.01 per year, and in September 2021 also approved a reduction in the minimum realized silver price threshold to $20 from $25 per ounce. For illustrative purposes only, the table below summarizes potential per share dividend amounts at different quarterly average realized price levels according to the first component of the policy, as amended: Quarterly Average Quarterly Silver- Annualized Silver- Annualized Minimum Annualized Dividends <$20 $ —  $ —  $ 0.015 $ 0.015 $20 $ 0.0025 $ 0.01 $ 0.015 $ 0.025 $25 $ 0.0100 $ 0.04 $ 0.015 $ 0.055 $30 $ 0.0150 $ 0.06 $ 0.015 $ 0.075 $35 $ 0.0250 $ 0.10 $ 0.015 $ 0.115 $40 $ 0.0350 $ 0.14 $ 0.015 $ 0.155 $45 $ 0.0450 $ 0.18 $ 0.015 $ 0.195 $50 $ 0.0550 $ 0.22 $ 0.015 $ 0.235 Total quarterly common stock dividends declared by our Board for the years ended December 31, 2023, 2022 and 2021 amounted to $15.2 million, $12.4 million and $20.1 million respectively. The common stock dividend declared by the Board in the third quarter of 2020 and each subsequent quarter with the exception of the fourth quarter of 2022 has included the silver-linked component, as the realized silver price was above the minimum thresholds applicable to each of those quarters. Prior to 2011, no dividends had been declared on our common stock since 1990. The declaration and payment of common stock dividends is at the sole discretion of our Board. At-The-Market Equity Distribution Agreement Pursuant to an equity distribution agreement dated February 18, 2021, we may offer and sell up to 60 million shares of our common stock from time to time to or through sales agents. Sales of the shares, if any, will be made by means of ordinary brokers transactions or as otherwise agreed between the Company and the agents as principals. Whether or not we engage in sales from time to time may depend on a variety of factors, including share price, our cash resources, customary black-out restrictions, and whether we have any material inside information. The agreement can be terminated by us at any time. Any sales of shares under the equity distribution agreement are registered under the Securities Act of 1933, as amended, pursuant to a shelf registration statement on Form S-3. During March, April and December of 2023, we sold 10,645,198 shares under the agreement for proceeds of $56.7 million, net of commissions and fees of $0.9 million. In total since September 2022 through December 31, 2023, we have sold 14,505,397 shares under the agreement for total proceeds of $74.0 million, net of commissions and fees of $1.2 million. Common Stock Repurchase Program In 2012, our Board approved a stock repurchase program under which we are authorized to repurchase up to 20 million shares of our outstanding common stock from time to time in open market or privately negotiated transactions, depending on prevailing market conditions and other factors. The repurchase program may be modified, suspended or discontinued by us at any time. As of December 31, 2023, a total of 934,100 shares have been repurchased under the program, at an average price of $3.99 per share. No shares were purchased under the program during the periods covered by these financial statements. Preferred Stock We have 157,776 shares (2022: 157,776 shares) of Series B Preferred Stock (“Preferred Stock”) outstanding which are on New York Stock Award Plans We use stock-based compensation plans to aid us in attracting, retaining and motivating our employees, as well as to provide incentives more directly linked to increases in stockholder value. These plans provide for the grant of options to purchase shares of our common stock, the issuance of restricted stock units, performance-based shares and other equity-based awards. Stock-based compensation expense amounts recognized for the years ended December 31, 2023, 2022 and 2021 were $6.6 million, $6.0 million, and $6.1 million, respectively. Over the next twelve months, we expect to recognize $4.2 million in additional compensation expense as outstanding restricted stock units and performance-based shares vest. Stock Incentive Plan During 2010, our stockholders voted to approve the adoption of our 2010 Stock Incentive Plan and to reserve up to 20,000,000 shares of common stock for issuance under the plan. In the second quarter of 2019, our stockholders voted to approve an amendment to the plan to restore the number of shares of common stock available for issuance under the 2010 plan to the original 20,000,000 shares (along with other changes). The Board has broad authority under the 2010 plan to fix the terms and conditions of individual agreements with participants, including the duration of the award and any vesting requirements. As of December 31, 2023, there were 12,756,250 shares available for future grant under the 2010 plan. Directors’ Stock Plan In 2017, we adopted the amended and restated Hecla Mining Company Stock Plan for Non-Employee Directors (the “Directors’ Stock Plan”), which may be terminated by our board of directors at any time. Each non-employee director is credited each year with that number of shares determined by dividing $120,000 by the average closing price for our common stock on the New York Stock Exchange for the prior calendar year. A minimum of 25% of the shares credited each year is held in trust for the benefit of each director until delivered to the director. Each director may elect, prior to the first day of the applicable year, to have a greater percentage contributed to the trust for that year. Delivery of the shares from the trust occurs upon the earliest of: (1) death or disability; (2) retirement; (3) a cessation of the director’s service for any other reason; (4) a change in control; or (5) at the election of the director at any time, provided, however, that shares must be held in the trust for at least two years prior to delivery. During 2023, 2022, and 2021, 125,063, 98,310, and 207,375 shares, respectively, were credited to the non-employee directors. During 2023, 2022 and 2021, $0.7 million, $0.4 million, and $1.8 million, respectively, was charged to general and administrative expense associated with the shares issued to the non-employee directors. During 2022, two directors retired and 388,175 shares were distributed to them. At December 31, 2023, there were 2,165,894 available for grant in the future under the plan. Restricted Stock Units Unvested restricted stock units (“RSU”) activity granted by the Board to employees are summarized as follows: Shares Weighted Unvested, January 1, 2021 3,936,134 $ 2.55 Granted 629,437 $ 7.88 Canceled (770,416 ) $ 2.82 Vested (1,772,803 ) $ 2.60 Unvested, December 31, 2021 2,022,352 $ 3.97 Granted 1,256,532 $ 4.41 Canceled (177,801 ) $ 4.41 Vested (1,304,968 ) $ 3.97 Unvested, December 31, 2022 1,796,115 $ 4.23 Granted 1,316,120 $ 5.05 Canceled (336,060 ) $ 4.90 Vested (918,927 ) $ 5.05 Unvested, December 31, 2023 1,857,248 $ 4.28 Unvested RSUs will be forfeited by participants upon termination of employment in advance of vesting, with the exception of termination due to retirement if certain criteria are met. At December 31, 2023, there was unrecognized compensation expense of $5.2 million related to unvested RSUs to be recognized over a weighted average period of 1.3 years. Performance-Based Shares We periodically grant performance-based share awards (“PSUs”) to certain executive employees. The value of the PSUs (if any) is based on t he Unvested PSUs activity granted by the Board to eligible employees are summarized as follows: Shares Weighted Unvested, January 1, 2021 1,813,895 $ 0.41 Granted 122,462 $ 13.70 Canceled (174,108 ) $ 0.76 Vested (1) (887,827 ) $ —  Unvested, December 31, 2021 874,422 $ 2.61 Granted 322,796 $ 3.78 Vested (1) (597,360 ) $ 0.31 Unvested, December 31, 2022 599,858 $ 5.54 Granted 336,096 $ 3.54 Canceled (109,727 ) $ 5.30 Vested (1) (205,425 ) $ 8.17 Unvested, December 31, 2023 620,802 $ 3.63 (1) Vested on December 31 and distributed in February of the following year Unvested PSUs will be forfeited by participants upon termination of employment in advance of vesting. At December 31, 2023, there was an unrecognized compensation expense of $1.0 million related to unvested PSUs to be recognized over a weighted average period of 1.5 years. In connection with the vesting of restricted stock units, PSUs and other stock grants, employees have in the past, at their election and when permitted by us, chosen to satisfy their tax withholding obligations through net share settlement, pursuant to which we withhold the number of shares necessary to satisfy such withholding obligations and pay the obligations in cash. Pursuant to such net settlements, in 2023, we withheld 404,514 shares valued at $2.0 million, or $5.03 per share. In 2022, we withheld 737,258 shares valued at $3.7 million, or $4.99 per share. In 2021, we withheld 574,251 shares valued at $4.5 million, or $7.88 per share. These shares become treasury shares unless we cancel them. Warrants We have 4,136,000 warrants outstanding since the Klondex acquisition in July 2018. Each holder to Number of warrants Exercise price Expiration date 2,068,000 $ 1.57 February 2029 2,068,000 $ 8.02 April 2032

Note 13 - Accumulated Other Com

Note 13 - Accumulated Other Comprehensive Income (Loss)	12 Months Ended
	Dec. 31, 2023
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income (Loss)	Note 13: Accumulated Other Comprehensive Income (Loss) The following table lists the beginning balance, yearly activity and ending balance of each component of “Accumulated other comprehensive income (loss), net” (in thousands): Changes in fair Adjustments Total Balance January 1, 2021 $ 7,632 $ (40,521 ) $ (32,889 ) 2021 change (12,307 ) 16,740 4,433 Balance December 31, 2021 (4,675 ) (23,781 ) (28,456 ) 2022 change 13,837 17,067 30,904 Balance December 31, 2022 9,162 (6,714 ) 2,448 2023 change 4,546 (1,157 ) 3,389 Balance December 31, 2023 $ 13,708 $ (7,871 ) $ 5,837 The amounts above are net of the income tax effect of such balances and activity as summarized in the following table (in thousands): Changes in fair Adjustments Total Balance January 1, 2021 $ —  $ 12,575 $ 12,575 2021 change 4,689 (6,379 ) (1,690 ) Balance December 31, 2021 4,689 6,196 10,885 2022 change (5,233 ) (6,454 ) (11,687 ) Balance December 31, 2022 (544 ) (258 ) (802 ) 2023 change (1,683 ) 428 (1,255 ) Balance December 31, 2023 $ (2,227 ) $ 170 $ (2,057 ) See Note 6 Note 10

Note 14 - Product Inventories

Note 14 - Product Inventories	12 Months Ended
	Dec. 31, 2023
Inventory Disclosure [Abstract]
Product Inventories	Note 14: Product Inventories Product Inventories Our major components of product inventories are ( in thousands 2023 2022 Concentrates $ 13,328 $ 21,513 Stockpiled ore 7,168 6,869 In-process 8,327 8,921 Total product inventories $ 28,823 $ 37,303

Note 15 - Properties, Plants, E

Note 15 - Properties, Plants, Equipment and Mineral Interests, and Lease Commitments	12 Months Ended
	Dec. 31, 2023
Property, Plant and Equipment [Abstract]
Properties, Plants, Equipment and Mineral Interests, and Lease Commitments	Note 15: Properties, Plants, Equipment and Mineral Interests, and Lease Commitments Properties, Plants, Equipment and Mineral Interests Our major components of properties, plants, equipment, and mineral interests are (in thousands December 31, 2023 2022 Mining properties, including asset retirement obligations $ 911,018 $ 871,027 Development costs 630,391 588,298 Plants and equipment 1,666,577 1,514,906 Land 35,112 35,644 Mineral interests 1,164,390 1,171,261 Construction in progress 121,022 134,600 4,528,510 4,315,736 Less accumulated depreciation, depletion and amortization 1,862,260 1,745,946 Net carrying value $ 2,666,250 $ 2,569,790 During 2023, we incurred total capital expenditures of $223.9 million. This excludes non-cash items for equipment acquired under finance leases and adjustments for asset retirement obligations, and includes acquisitions of mineral interests and land. The expenditures included $65.3 million at Lucky Friday, $43.5 million at Greens Creek, $70.1 million at Casa Berardi and $44.7 million at Keno Hill. Mineral interests include amounts for value beyond proven and probable reserves (“VBPP”) related to mines and exploration or pre-development interests acquired by us which are not depleted until the mineralized material they relate to is converted to proven and probable reserves. As of December 31, 2023, mineral interests included VBPP assets of $323.6 million, $383.6 million, $86.3 million and $102.1 million , , Finance Leases We periodically enter into lease agreements, primarily for equipment at our operations, which we have determined to be finance leases. As of Properties, plants, equipment and mineral interests Note 9

Note 16 - Commitments, Continge

Note 16 - Commitments, Contingencies, and Obligations	12 Months Ended
	Dec. 31, 2023
Disclosure Text Block [Abstract]
Commitments, Contingencies, and Obligations	Note 16: Commitments, Contingencies, and Obligations Johnny M Mine Area near San Mateo, McKinley County and San Mateo Creek Basin, New Mexico In August 2012, Hecla Limited and the U.S. Environmental Protection Agency (the “EPA”) entered into a Settlement Agreement and began The Johnny M Mine is in an area known as the San Mateo Creek Basin (“SMCB”), which is an approximately 321 square mile area in New Mexico that contains numerous legacy uranium mines and mills. In addition to Johnny M, Hecla Limited’s predecessor was involved at other mining sites within the SMCB. The EPA appears to have deferred consideration of listing the SMCB site on CERCLA’s National Priorities List (“Superfund”) by removing the site from its emphasis list, and is working with various potentially responsible parties (“PRPs”) at the site in order to study and potentially address perceived groundwater issues within the SMCB. The EE/CA discussed above relates primarily to contaminated rock and soil at the Johnny M site, not groundwater and not elsewhere within the SMCB site. It is possible that Hecla Limited’s liability at the Johnny M Site, and for any other mine site within the SMCB at which Hecla Limited’s predecessor may have operated, will be greater than our current accrual of $10.1 million due to the increased scope of required remediation. In July 2018, the EPA informed Hecla Limited that it and several other PRPs may be liable for cleanup of the SMCB site or for costs incurred by the EPA in cleaning up the site. The EPA stated it has incurred approximately $9.6 million in response costs to date. On May 2, 2022, Hecla Limited received a letter from a PRP notifying Hecla Limited that three PRPs will seek cost recovery and contribution from Hecla Limited under CERCLA for certain investigatory work performed by the PRPs at the SMCB site. Hecla Limited cannot with reasonable certainty estimate the amount or range of liability, if any, relating to this matter because of, among other reasons, the lack of information concerning the site, including the relative contributions of contamination by the various PRPs. Carpenter Snow Creek and Barker-Hughesville Sites in Montana In July 2010, the EPA made a formal request to Hecla for information regarding the Carpenter Snow Creek Superfund site located in Cascade In June 2011, the EPA informed Hecla Limited that it believes Hecla Limited, and several other PRPs, may be liable for cleanup of the site or for costs incurred by the EPA in cleaning up the site. The EPA stated in the letter that it has incurred approximately $4.5 million in response costs and estimated that total remediation costs may exceed $100 million. Hecla Limited cannot with reasonable certainty estimate the amount or range of liability, if any, relating to this matter because of, among other reasons, the lack of information concerning the site, including the relative contributions of contamination by various other PRPs. In February 2017, the EPA made a formal request to Hecla for information regarding the Barker-Hughesville Mining District Superfund site located in Judith Basin and Cascade Counties, Montana. Hecla Limited submitted a response in April 2017. The Barker-Hughesville site is located in a historic mining district, and between approximately June and December 1983, Hecla Limited was party to an agreement with another mining company under which limited exploration activities occurred at or near the site. In August 2018, the EPA informed Hecla Limited that it and several other PRPs may be liable for cleanup of the site or for costs incurred by the EPA in cleaning up the site. The EPA did not include an amount of its alleged response costs to date. Hecla Limited cannot with reasonable certainty estimate the amount or range of liability, if any, relating to this matter because of, among other reasons, the lack of information concerning past or anticipated future costs at the site and the relative contributions of contamination by various other PRPs. Lucky Friday and Keno Hill Environmental Issues On July 12, 2022, our Lucky Friday mine received a notice of violation from the EPA alleging violations of the Clean Water Act between 2018 and 2021 relating primarily to concentration levels of zinc and lead in the mine’s permitted water discharges. Currently, the EPA has not initiated any formal enforcement proceeding against our Lucky Friday subsidiary. In civil judicial cases, the EPA can seek statutory penalties up to $59,973 per day per violation and, in administrative actions, the EPA can seek administrative penalties up to $23,989 per day per violation with a maximum administrative penalty of $299,989 for all alleged violations. The EPA typically pursues administrative penalties. At this time, we cannot reasonably assess the amount of penalties the EPA may seek, or predict the terms of any potential settlement with the EPA. On December 14, 2023 and January 29, 2024, our Keno Hill mine received notice from the Yukon government that it is charged with violating the Quartz Mining Act and the Waters Act, two statutes of the Yukon Territory, relating to alleged violations of Keno Hill’s mining license and water license. The allegations are that the mine stored hazardous materials inconsistent with the terms of its mining license on or between April 19, 2022 and July 25, 2023 and exceeded water discharge limits in its water license on June 27 and December 6, 2023. If convicted, the maximum fine for an offense under both of these laws is $100,000 per offense. Because we are at the initial stages of this regulatory proceeding, we cannot reasonably predict the outcome of this matter at this time. Litigation Related to Klondex Acquisition On May 24, 2019, a purported Hecla stockholder filed a putative class action lawsuit in the U.S. District Court for the Southern District of New York against Hecla and certain of our executive officers, one of whom is also a director. The complaint, purportedly brought on behalf of all purchasers of Hecla common stock from March 19, 2018 through and including May 8, 2019, asserts claims under Sections 10(b) and 20(a) of the Securities Exchange Act of 1934 and Rule 10b-5 promulgated thereunder and seeks, among other things, damages and costs and expenses. Specifically, the complaint alleges that Hecla, under the authority and control of the individual defendants, made certain material false and misleading statements and omitted certain material information regarding Hecla’s Nevada Operations. The complaint alleges that these misstatements and omissions artificially inflated the market price of Hecla common stock during the class period, thus purportedly harming investors. The Court granted our Motion to Dismiss the lawsuit, without prejudice, in February 2023, and the plaintiffs filed an amended complaint in March 2023 which repeats the same claims. We have filed a Motion to Dismiss the amended complaint. We cannot predict the outcome of this lawsuit or estimate damages if plaintiffs were to prevail. We believe that these claims are without merit and intend to defend them vigorously. Related to this class action lawsuit, Hecla has been named as a nominal defendant in a shareholder derivative lawsuit which also names as Debt See Note 9 Other Commitments Our contractual obligations as of December 31, 2023 included open purchase orders and commitments of $11.4 million, $8.1 million, $10.7 million, $2.8 million and $3.5 million for various capital and non-capital items at Greens Creek, Lucky Friday, Keno Hill, Casa Berardi and Other, respectively. We also have total commitments of $29.8 million relating to scheduled payments on finance leases, including interest, primarily for equipment at our Greens Creek, Lucky Friday, Casa Berardi, and Keno Hill units, and total commitments of $11.6 million relating to payments on operating leases (see Note 9 Other Contingencies We also have certain other contingencies resulting from litigation, claims, EPA investigations, and other commitments are subject variety

Note 17 - Subsequent Events

Note 17 - Subsequent Events	12 Months Ended
	Dec. 31, 2023
Notes To Financial Statements [Abstract]
Subsequent Events [Text Block]	Note 17: Subsequent events On February 13, 2024, our Board of Directors declared a quarterly cash dividend of $0.00625 per share of common stock, consisting of $0.00375 per share for the minimum dividend component and $0.0025 per share for the silver-linked dividend component of our dividend policy. On February 13, 2024, we collected $5.4 million of insurance coverage proceeds related to the Lucky Friday fire insurance coverage claim.

Note 2 - Summary of Significa_2

Note 2 - Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2023
Accounting Policies [Abstract]
Principles of Consolidation, Basis of Presentation and Other Information	A. Principles of Consolidation, Basis of Presentation and Other Information —
Assumptions and Use of Estimates	B. Assumptions and Use of Estimates — financial
Cash and Cash Equivalents	C. Cash and Cash Equivalents —
Investments	D. Investments —
Inventories	E. Inventories — Stockpiled ore inventory represents ore that has been mined, hauled to the surface, and is available for further processing. Stockpiles are measured by estimating the number of tons added and removed from the stockpile, the amount of contained metal ounces or pounds (based on assay data) and the estimated metallurgical recovery rates (based on the expected processing method). Costs are allocated to a stockpile based on relative values of material stockpiled and processed using current mining costs incurred up to the point of stockpiling the ore, including applicable overhead, depreciation, depletion and amortization relating to mining operations, and removed at each stockpile’s average cost per recoverable unit. In-process inventory represents material that is currently in the process of being converted to a saleable product. Conversion processes vary depending on the nature of the ore and the specific processing facility, but include mill in-circuit, flotation, and carbon-in-leach. In-process material is measured based on assays of the material fed into the process and the projected recoveries of the respective processing plants. In-process inventory is valued at the lower of the average cost of the material fed into the process attributable to the source material coming from the mine and stockpile plus the in-process conversion costs, including applicable amortization relating to the process facilities incurred to that point in the process, or net realizable value. Finished goods inventory includes doré and concentrates at our operations, doré in transit to refiners or at refiners waiting to be processed, and bullion in our accounts at refineries.
Restricted Cash and Investments	F. Restricted Cash and Cash Equivalents —
Properties, Plants, Equipment and Mineral Interests	G. Properties, Plants, Equipment and Mineral Interests The costs of removing overburden and waste materials to access the ore body at an open-pit mine prior to the production stage are referred to as “pre-stripping costs.” Pre-stripping costs are capitalized during the development stage. Where multiple open pits exist at an operation utilizing common facilities, pre-stripping costs are capitalized at each pit. The production stage of a mine commences when saleable materials, beyond a de minimis amount, are produced. Stripping costs incurred during the production stage are treated as variable production costs included as a component of inventory, to be recognized in cost of sales and other direct production costs in the same period as the revenue from the sale of inventory. When stripping costs incurred during the production phase result in the construction of an asset with an alternative use, such as a tailings storage facility, a portion of those stripping costs are capitalized. Costs for exploration, pre-development, secondary development at operating mines, including drilling costs related to those activities (discussed further below), and maintenance and repairs on capitalized properties, plants and equipment are charged to operations as incurred. Exploration costs include those relating to activities carried out in search of previously unidentified resources or exploration targets, (a) at undeveloped concessions, or (b) at operating mines already containing proven and probable reserves, where a determination remains pending as to whether new target deposits outside of the existing reserve areas can be economically developed. Pre-development activities involve costs incurred in the exploration stage that may ultimately benefit production, such as underground ramp development, which are expensed due to the lack of evidence of economic viability, which is necessary to demonstrate future recoverability of these expenses. At an underground mine, secondary development costs are incurred for preparation of an ore body for production in a specific ore block, stope or work area, providing a relatively short-lived benefit only to the mine area they relate to, and not to the ore body as a whole. Primary development costs benefit long-term production, multiple mine areas, or the ore body as a whole, and are therefore capitalized. Drilling, development and related costs are either classified as exploration, pre-development or secondary development, as defined above, and charged to operations as incurred, or capitalized, based on the following criteria: • whether the costs are incurred to further define resources or exploration targets at and adjacent to existing reserve areas or intended to assist with mine planning within a reserve area; • whether the drilling or development costs relate to an ore body that has been determined to be commercially mineable, and a decision has been made to put the ore body into commercial production; and • whether, at the time the cost is incurred: (a) the expenditure embodies a probable future benefit that involves a capacity, singly or in combination with other assets, to contribute directly or indirectly to future net cash inflows, (b) we can obtain the benefit and control others’ access to it, and (c) the transaction or event giving rise to our right to or control of the benefit has already occurred. If all of these criteria are met, drilling, development and related costs are capitalized. Drilling and development costs not meeting all of these criteria are expensed as incurred. The following factors are considered in determining whether or not the criteria listed above have been met, and capitalization of drilling and development costs is appropriate: • completion of a favorable economic study and mine plan for the ore body targeted; • authorization of development of the ore body by management and/or the board of directors; and • there is a justifiable expectation, based on applicable laws and regulations, that issuance of permits or resolution of legal issues and/or contractual requirements necessary for us to have the right to or control of the future benefit from the targeted ore body have been met. Drilling and related costs of approximately $17.6 million, $11.2 million, and $5.2 million for the years ended December 31, 2023, 2022 and 2021, respectively, met our criteria for capitalization listed above at our production stage properties. When assets are retired or sold, the costs and related allowances for depreciation and amortization are eliminated from the accounts and any resulting gain or loss is reflected in current period net income (loss). Our mineral interests, which are tangible assets, include acquired undeveloped mineral interests and royalty interests. Undeveloped mineral interests include: (i) resources which are measured, indicated or inferred with insufficient drill spacing or quality to qualify as proven and probable reserves; and (ii) inferred material and exploration targets not immediately adjacent to existing proven and probable reserves but accessible within the immediate mine infrastructure. Residual values for undeveloped mineral interests represent the expected fair value of the interests at the time we plan to convert, develop, further explore or dispose of the interests and are evaluated at least annually.
Depreciation, Depletion and Amortization	H. Depreciation, Depletion and Amortization — J. Proven and Probable Mineral Reserves Undeveloped mineral interests and value beyond proven and probable reserves are not amortized until such time as there are proven and probable reserves or the related mineralized material is converted to proven and probable reserves. At that time, the basis of the mineral interest is amortized on a units-of-production basis. Pursuant to our policy on impairment of long-lived assets (discussed further below), if it is determined that an undeveloped mineral interest cannot be economically converted to proven and probable reserves and its carrying value exceeds its estimated undiscounted future cash flows, the basis of the mineral interest is reduced to its fair value and an impairment loss is recorded to expense in the period in which it is determined to be impaired.
Impairment of Long-lived Assets	I. Impairment of Long-lived Assets — Although management has made what it believes to be a reasonable estimate of factors based on current conditions and information, assumptions underlying future cash flows, which includes the estimated value of resources and exploration targets, are subject to significant risks and uncertainties. Estimates of undiscounted future cash flows are dependent upon, among other factors, estimates of: (i) metals to be recovered from proven and probable mineral reserves and identified resources and exploration targets beyond proven and probable reserves, (ii) future production and capital costs, (iii) estimated metals prices (considering current and historical prices, forward pricing curves and related factors) over the estimated remaining mine life and (iv) market values of mineral interests. It
Proven and Probable Mineral Reserves	J. Proven and Probable Mineral Reserves — Reserve estimates will change as existing reserves are depleted through production, as additional reserves are proven and added to the estimates and as market prices of metals, production or capital costs, smelter terms, the grade or tonnage of the deposit, throughput, dilution of the ore or recovery rates change.
Leases	K. Leases — Operating and finance lease ROU assets and lease liabilities are recognized at the lease commencement date based on the present value of the future lease payments over the lease term. When the rate implicit to the lease cannot be readily determined, we utilize our incremental borrowing rate in determining the present value of the future lease payments. The incremental borrowing rate is derived from information available at the lease commencement date and represents the rate of interest that we would have to pay to borrow on a collateralized basis over a similar term an amount equal to the lease payments in a similar economic environment. The ROU asset includes any lease payments made and lease incentives received prior to the commencement date. Operating lease ROU assets also include any cumulative prepaid or accrued rent when the lease payments are uneven throughout the lease term. The ROU assets and lease liabilities may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option.
Income and Mining Taxes	L. Income and Mining Taxes — We evaluate uncertain tax positions in a two-step process, whereby (i) it is determined whether it is more likely than not that the tax positions will be sustained based on the technical merits of the position and (ii) for those tax positions that meet the more-likely-than-not recognition threshold, the largest amount of tax benefit that is greater than 50% likely of being realized upon ultimate settlement with the related tax authority would be recognized. We evaluate our ability to realize deferred tax assets by considering the sources and timing of taxable income, including the reversal of existing temporary differences, the ability to carryback tax attributes to prior periods, qualifying tax-planning strategies, and estimates of future taxable income exclusive of reversing temporary differences. In determining future taxable income, the Company’s assumptions include the amount of pre-tax operating income according to different state, federal and international taxing jurisdictions, the origination of future temporary differences, and the implementation of feasible and prudent tax-planning strategies. Should we determine that a portion of our deferred tax assets will not be realized, a valuation allowance is recorded in the period that such determination is made. When we determine, based on the existence of sufficient evidence, that more or less of the deferred tax assets are more likely than not to be realized, an adjustment to the valuation allowance is made in the period such a determination is made. We classify as income taxes mine license taxes incurred in the states of Alaska and Idaho, the net proceeds taxes incurred in Nevada, mining duties in Mexico, and resource taxes incurred in Quebec and Yukon, Canada.
Reclamation and Remediation Costs (Asset Retirement Obligations)	M. Reclamation and Remediation Costs (Asset Retirement Obligations) — At our non-operating properties, we accrue costs associated with environmental remediation obligations when it is probable that such costs will be incurred and they are reasonably estimable. Accruals for estimated losses from environmental remediation obligations have historically been recognized no later than completion of the remediation feasibility study for such facility and are charged to current earnings under provision for closed operations and environmental matters. Costs of future expenditures for environmental remediation are not discounted to their present value unless subject to a contractually obligated fixed payment schedule. Such costs are based on management’s current estimate of amounts to be incurred when the remediation work is performed, within current laws and regulations. Future closure, reclamation and environmental-related expenditures are difficult to estimate in many circumstances, due to the early stage nature of investigations, uncertainties associated with defining the nature and extent of environmental contamination, the application of laws and regulations by regulatory authorities, and changes in reclamation or remediation technology. We periodically review accrued liabilities for such reclamation and remediation costs as evidence becomes available indicating that our liabilities have potentially changed. Changes in estimates at our non-operating properties are reflected in current period net income (loss).
Revenue Recognition and Trade Accounts Receivable	N. Revenue Recognition and Trade Accounts Receivable — P. Risk Management Contracts Refining, selling and shipping costs related to sales of doré, metals from doré, and carbon are recorded to cost of sales as incurred. Sales and accounts receivable for concentrate shipments are recorded net of charges by the customers for treatment, refining, smelting losses, and other charges negotiated by us with the customers. Charges are estimated by us upon shipment of concentrates based on contractual terms, and actual charges typically do not vary materially from our estimates. Costs charged by customers include fixed costs per ton of concentrate, and price escalators which allow the customers to participate in the increase of lead and zinc prices above a negotiated baseline.
Foreign Currency	O. Foreign Currency — P. Risk Management Contracts
Risk Management Contracts	P. Risk Management Contracts —
Stock Based Compensation	Q. Stock Based Compensation —
Basic and Diluted Income (Loss) Per Common Share	R. Basic and Diluted Income (Loss) Per Common Share —
Comprehensive Income (Loss)	S. Comprehensive Income (Loss) —
New Accounting Pronouncements	T. New Accounting Pronouncements — Accounting Standards Updates Adopted In March 2020, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Updates to Become Effective in Future Periods In August 2023, the FASB issued ASU 2023-05, Business Combinations—Joint Venture Formations (Subtopic 805-60): Recognition and Initial Measurement, which clarifies the business combination accounting for joint venture formations. The amendments in the ASU seek to reduce diversity in practice that has resulted from a lack of authoritative guidance regarding the accounting for the formation of joint ventures in separate financial statements. The amendments also seek to clarify the initial measurement of joint venture net assets, including businesses contributed to a joint venture. The guidance is applicable to all entities involved in the formation of a joint venture. The amendments are effective for all joint venture formations with a formation date on or after January 1, 2025. Early adoption and retrospective application of the amendments are permitted. We do not expect adoption of the new guidance to have a material impact on our consolidated financial statements and disclosures. In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures, amending reportable segment disclosure requirements to include disclosure of incremental segment information on an annual and interim basis. Among the disclosure enhancements are new disclosures regarding significant segment expenses that are regularly provided to the chief operating decision-maker and included within each reported measure of segment profit or loss, as well as other segment items bridging segment revenue to each reported measure of segment profit or loss. The amendments in ASU 2023-07 are effective for fiscal years beginning after December 15, 2023, and for interim periods within fiscal years beginning after December 15, 2024, and are applied retrospectively. Early adoption is permitted. We are currently evaluating the impact of this update on our consolidated financial statements and disclosures. In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvement to Income Tax Disclosures, amending income tax disclosure requirements for the effective tax rate reconciliation and income taxes paid. The amendments in ASU 2023-09 are effective for fiscal years beginning after December 15, 2024 and are applied prospectively. Early adoption and retrospective application of the amendments are permitted. We are currently evaluating the impact of this update on our consolidated financial statements and disclosures.

Note 4 - Business Segments, S_2

Note 4 - Business Segments, Sales of Products and Significant Customers (Tables)	12 Months Ended
	Dec. 31, 2023
Segment Reporting [Abstract]
Schedule of Information About Reportable Segments	The tables below present information about our reportable segments as of and for the years ended December 31, 2023, 2022 and 2021 (in thousands). 2023 2022 2021 Net sales to unaffiliated customers: Greens Creek $  384,504 $ 335,062 $ 384,843 Lucky Friday 116,284 147,814 131,488 Keno Hill 35,518 —  —  Casa Berardi 177,678 235,136 245,152 Other 6,243 893 45,990 Total sales to unaffiliated customers $ 720,227 $ 718,905 $ 807,473 Income (loss) from operations: Greens Creek $ 113,551 $ 87,297 $ 164,666 Lucky Friday 4,811 27,636 31,683 Keno Hill (35,344 ) (4,249 ) —  Casa Berardi (56,683 ) (21,799 ) 5,807 Other (71,009 ) (101,323 ) (118,736 ) Total (loss) income from operations $ (44,674 ) $ (12,438 ) $ 83,420 Capital additions (excluding non-cash items): Greens Creek $ 43,542 $ 36,898 $ 23,883 Lucky Friday 65,337 50,992 29,885 Keno Hill 44,672 19,725 —  Casa Berardi 70,056 39,667 49,617 Other 280 2,096 5,663 Total capital additions $ 223,887 $ 149,378 $ 109,048 Depreciation, depletion and amortization: Greens Creek $ 53,995 $ 48,911 $ 48,710 Lucky Friday 24,325 33,704 26,846 Keno Hill 4,277 —  —  Casa Berardi 66,037 60,962 80,744 Other 140 361 15,493 Total depreciation, depletion and amortization $ 148,774 $ 143,938 $ 171,793 Other significant non-cash items: Greens Creek $ 11,098 $ 2,821 $ 3,653 Lucky Friday (916 ) 1,138 1,048 Keno Hill 376 1,669 —  Casa Berardi 13,378 1,520 1,284 Other 18,994 3,568 (12,290 ) Total other significant non-cash items $ 42,930 $ 10,716 $ (6,305 ) Identifiable assets: Greens Creek $ 569,369 $ 582,687 $ 589,944 Lucky Friday 578,110 571,510 516,545 Keno Hill 362,986 276,096 —  Casa Berardi 683,035 681,631 701,868 Other 817,604 815,248 920,451 Total identifiable assets $ 3,011,104 $ 2,927,172 $ 2,728,808
Schedule of Long-lived Assets by Geographic Area	The following are our long-lived assets by geographic area as of December 31, 2023 and 2022 (in thousands): 2023 2022 United States $ 1,698,285 $ 1,670,676 Canada 960,109 891,375 Mexico 7,856 7,739 Total long-lived assets $ 2,666,250 $ 2,569,790
Schedule of Sales Contributed by Each Segment	Sales of metal concentrates and metal products are made principally to custom smelters, third-party processors and metal traders. The percentage of metal sales contributed by each segment is reflected in the following table: Year Ended December 31, 2023 2022 2021 Greens Creek 53.7 % 46.6 % 47.6 % Lucky Friday 16.3 % 20.6 % 16.3 % Keno Hill 5.0 % —  —  Casa Berardi 24.9 % 32.7 % 30.4 % Other 0.1 % 0.1 % 5.7 % 100 % 100 % 100 %
Schedule of Sales of Products by Metal	Total sales for the years ended December 31, 2023, 2022 and 2021 were as follows (in thousands): Year Ended December 31, 2023 2022 2021 Silver $ 302,284 $ 265,054 $ 293,646 Gold 274,613 298,910 362,037 Lead 72,726 83,384 75,431 Zinc 116,230 123,057 125,292 Less: Smelter and refining charges (50,909 ) (51,973 ) (48,933 ) Total metal sales 714,944 718,432 807,473 Environmental remediation services 5,283 473 —  Total sales $ 720,227 $ 718,905 $ 807,473
Schedule of Sales Information by Geographic Area	The following is metal sales information by geographic area based on the location of smelters and metal traders (for concentrate shipments) and the location of parent companies (for doré sales to metal traders) for the years ended December 31, 2023, 2022 and 2021 (in thousands): 2023 2022 2021 United States $ 36,307 $ 21,938 $ 71,278 Canada 375,092 406,600 419,090 Japan 52,744 51,375 63,588 Korea 127,590 107,828 203,115 China 103,534 136,514 50,945 Total, excluding gains/losses on forward contracts $ 695,267 $ 724,255 $ 808,016 Metal sales by significant product type for the years ended December 31, 2023, 2022 and 2021 were as follows (in thousands): Year Ended December 31, 2023 2022 2021 Doré and metals from doré $ 211,321 $ 255,608 $ 313,337 Carbon 4,333 2,607 4,117 Silver concentrate 356,941 329,165 345,732 Zinc concentrate 80,274 109,177 112,448 Precious metals concentrate 42,398 27,698 32,382 Total, excluding gains/losses on forward contracts $ 695,267 $ 724,255 $ 808,016
Schedule of Sales from Continuing Operations to Significant Metals Customers	Metal sales from continuing operations to significant metals customers as a percentage of total sales were as follows for the years ended December 31, 2023, 2022 and 2021: Year Ended December 31, 2023 2022 2021 Customer A 24.2 % 35.4 % 37.2 % Customer B 11.8 % 23.9 % 21.5 % Customer C 15.5 % 11.3 % 21.6 % Customer D 15.8 % 3.5 % 6.2 %
Summary of Trade Accounts Receivable	Trade accounts receivable balances with significant metals customers as of December 31, 2023 and 2022 were as follows. 2023 2022 Customer B 22.2 % 57.5 % Customer D 34.8 % —  Customer E 24.2 % 3.2 % Customer F —  15.9 % Customer G —  11.8 %

Note 5 - Environmental and Re_2

Note 5 - Environmental and Reclamation Activities (Tables)	12 Months Ended
	Dec. 31, 2023
Environmental and Reclamation Activities [Abstract]
Schedule of Reclamation and Closure Costs Liabilities	2023 2022 Operating properties: Greens Creek $ 39,893 $ 37,212 Lucky Friday 12,022 13,343 Keno Hill 3,360 4,514 Casa Berardi 11,157 11,352 Non-operating properties: Nevada Operations 30,539 28,171 San Sebastian 2,061 1,989 Troy mine 5,238 6,980 Johnny M 10,148 8,961 All other sites 6,039 4,477 Total 120,457 116,999 Reclamation and closure costs, current (9,660 ) (8,591 ) Reclamation and closure costs, long-term $ 110,797 $ 108,408
Schedule of Reclamation and Closure Costs Activities	Balance at January 31, 2021 $ 116,048 Accruals for estimated costs 4,952 Accretion expense 6,454 Revision of estimated cash flows due to changes in reclamation plans (8,781 ) Payment of reclamation obligations (5,442 ) Balance at December 31, 2021 113,231 Accruals for estimated costs 2,874 Accretion expense 5,995 Revision of estimated cash flows due to changes in reclamation plans 452 Payment of reclamation obligations (5,553 ) Balance at December 31, 2022 116,999 Accruals for estimated costs 2,952 Accretion expense 7,740 Revision of estimated cash flows due to changes in reclamation plans (29 ) Payment of reclamation obligations (7,205 ) Balance at December 31, 2023 $ 120,457
Schedule of Change in Asset Retirement Obligation	2023 2022 Balance January 1 $ 96,620 $ 95,033 Changes in obligations due to changes in reclamation plans (29 ) 452 Accretion expense 7,740 5,995 Payment of reclamation obligations (5,264 ) (4,860 ) Balance at December 31 $ 99,067 $ 96,620

Note 6 - Employee Benefit Pla_2

Note 6 - Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2023
Defined Benefit Plan [Abstract]
Schedule of changes in the plans' benefit obligations and fair value of assets	The following tables provide a reconciliation of the changes in the plans’ benefit obligations and fair value of assets over the two-year period ended December 31, 2023, and the funded status as of December 31, 2023 and 2022 (in thousands): Pension Benefits 2023 2022 Change in benefit obligation: Benefit obligation at beginning of year $ 148,143 $ 195,862 Service cost 3,794 6,262 Interest cost 7,974 5,476 Change due to mortality change 643 486 Change due to discount rate change (3,635 ) (54,977 ) Actuarial return 401 1,841 Benefits paid (7,894 ) (6,807 ) Benefit obligation at end of year 149,426 148,143 Change in fair value of plan assets: Fair value of plan assets at beginning of year 175,159 189,874 Actual return on plan assets 7,937 (18,238 ) Employer contributions 1,756 10,330 Benefits paid (7,894 ) (6,807 ) Fair value of plan assets at end of year 176,958 175,159 Funded status at end of year $ 27,532 $ 27,016
Schedule of the amounts recognized in the consolidated balance sheets	The following table provides the amounts recognized in the consolidated balance sheets as of December 31, 2023 and 2022 (in thousands): Pension Benefits 2023 2022 Non-current assets: Accrued benefit asset $ 28,399 $ 27,806 Current pension liability Accrued benefit liability (867 ) (790 ) Accumulated other comprehensive loss 8,031 6,446 Net amount recognized $ 35,563 $ 33,462
Schedule of assumptions related to benefit obligation and prepaid benefit costs	The benefit obligation and prepaid benefit costs were calculated by applying the following weighted average assumptions: Pension Benefits 2023 2022 Discount rate: net periodic pension cost 5.77 % 5.54 % Discount rate: projected benefit obligation 5.77 % 5.54 % Expected rate of return on plan assets 7.25 % 7.25 % Rate of compensation increase: net periodic pension cost 5%/2%   (1) 5%/2 % Rate of compensation increase: projected benefit obligation 4%/3%/2%   (2)        5%/2 %
Schedule of net periodic pension cost	Net periodic pension cost for the plans consisted of the following in 2023, 2022, and 2021 (in thousands): Pension Benefits 2023 2022 2021 Service cost $ 3,794 $ 6,262 $ 5,820 Interest cost 7,974 5,476 4,990 Expected return on plan assets (12,428 ) (13,452 ) (9,252 ) Amortization of prior service cost 500 511 394 Amortization of net (loss) gain (188 ) 2,049 4,502 Net periodic pension (benefit) cost $ (348 ) $ 846 $ 6,454
Schedule of allocation of assets	Target Maximum Large cap U.S. equities 17 % 20 % Small cap U.S. equities 8 % 10 % Non-U.S. equities 25 % 30 % U.S. Fixed income 18 % 23 % Emerging markets debt 5 % 8 % Real estate 15 % 18 % Absolute return 5 % 7 % Company stock/Real return 7 % 13 %
Schedule of fair values of plan by asset category	The fair values by asset category in each pension plan, along with their hierarchy levels, are as follows as of December 31, 2023 (in thousands): Hecla plans Lucky Friday Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Investments measured at fair value Interest-bearing cash $ 525 $ —  $ —  $ 525 $ 117 $ —  $ —  $ 117 Common stock 19,933 —  —  19,933 2,872 —  —  2,872 Mutual funds 83,504 —  —  83,504 12,792 —  —  12,792 Total investments in the fair value hierarchy 103,962 —  —  103,962 15,781 —  —  15,781 Investments measured at net asset value Real estate funds —  —  —  18,029 —  —  —  4,173 Common collective funds —  —  —  28,386 —  —  —  6,627 Total investments measured at net asset value —  —  —  46,415 —  —  —  10,800 Total fair value $ 103,962 $ —  $ —  $ 150,377 $ 15,781 $ —  $ —  $ 26,581 The fair values by asset category in each defined benefit pension plan, along with their hierarchy levels, were as follows as of December 31, 2022 (in thousands): Hecla plans Lucky Friday Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total Investments measured at fair value Interest-bearing cash $ 743 $ —  $ —  $ 743 $ 133 $ —  $ —  $ 133 Common stock 21,678 —  —  21,678 3,295 —  —  3,295 Mutual funds 75,868 —  —  75,868 11,905 —  —  11,905 Total investments in the fair value hierarchy 98,289 —  —  98,289 15,333 —  —  15,333 Investments measured at net asset value Real estate funds —  —  —  23,967 —  —  —  5,550 Hedge funds —  —  —  —  —  —  —  —  Common collective funds —  —  —  26,114 —  —  —  5,906 Total investments measured at net asset value —  —  —  50,081 —  —  —  11,456 Total fair value $  98,289 $ —  $ —  $ 148,370 $ 15,333 $ —  $ —  $ 26,789
Schedule of estimates of future benefit payments	The following are estimates of future benefit payments, which reflect expected future service as appropriate, related to our pension plans (in thousands): Year Ending December 31, Pension 2024 $ 8,886 2025 10,031 2026 10,005 2027 9,981 2028 10,321 Years 2029-2033 51,163
Schedule of indication of whether pension plans had accumulated benefit obligations (ABO) in excess of plan assets, or plan assets exceeded ABO	The following table indicates whether our pension plans had accumulated benefit obligations (“ABO”) in excess of plan assets, or plan assets exceeded ABO (amounts are in thousands). 2023 2022 Plan Assets Plan Assets Projected benefit obligation $ 149,426 $ 148,143 Accumulated benefit obligation 146,336 144,816 Fair value of plan assets 176,958 175,159
Schedule of amounts included in "Accumulated other comprehensive loss, net"	For the pension plans, the following amounts are included in “Accumulated other comprehensive income, net” on our balance sheet as of December 31, 2023, that have not yet been recognized as components of net periodic benefit cost (in thousands): Pension Unamortized net loss $ 7,462 Unamortized prior service cost 579

Note 7 - Income and Mining Ta_2

Note 7 - Income and Mining Taxes (Tables)	12 Months Ended
	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Schedule of Components of Income and Mining Tax Benefit (Provision)	Major components of our income and mining tax benefit (provision) for the years ended December 31, 2023, 2022 and 2021 are as follows (in thousands): 2023 2022 2021 Current: Domestic $ (3,846 ) $ (3,915 ) $ (7,073 ) Foreign (3,322 ) (5,119 ) (6,316 ) Total current income and mining tax provision (7,168 ) (9,034 ) (13,389 ) Deferred: Domestic (17,058 ) 2,064 43,708 Foreign 23,004 14,536 (750 ) Total deferred income and mining tax benefit 5,946 16,600 42,958 Total income and mining tax (provision) benefit $ (1,222 ) $   7,566 $ 29,569
Schedule of Domestic and Foreign Components of Income (Loss) Before Income and Mining Taxes	Domestic and foreign components of income (loss) before income and mining taxes for the years ended December 31, 2023, 2022 and 2021 are as follows (in thousands): 2023 2022 2021 Domestic $ 43,745 $ (6,343 ) $ 38,003 Foreign (126,740 ) (38,571 ) (32,477 ) Total $ (82,995 ) $ (44,914 ) $ 5,526
Schedule of Effective Income Tax Reconciliation	The annual tax benefit (provision) is different from the amount that would be provided by applying the statutory federal income tax rate to our pretax income (loss). The reasons for the difference are (in thousands): 2023 2022 2021 Computed “statutory” benefit (provision) $ 17,429 21 % $ 9,432 21 % $ (1,161 ) 21 % Percentage depletion 4,205 5 8,542 19 8,076 (146 ) Change in valuation allowance (20,016 ) (24 ) (8,113 ) (18 ) 38,058 (689 ) State taxes, net of federal tax benefit (2,731 ) (3 ) (158 ) —  965 (17 ) Foreign currency remeasurement of monetary assets and liabilities (4,155 ) (5 ) 4,559 10 (3,625 ) 66 Rate differential on foreign earnings 6,553 8 1,515 3 2,445 (44 ) Compensation (1,636 ) (2 ) 173 0 1,094 (20 ) Mining and other taxes (1,359 ) (2 ) (6,609 ) (15 ) (13,799 ) 250 Other 488 1 (1,775 ) (3 ) (2,484 ) 45 Total (provision) benefit $ (1,222 ) (1 )% $ 7,566 17 % $ 29,569 (535 )%
Schedule of Components of Net Deferred Tax Assets and Liabilities	The individual components of our net deferred tax assets and liabilities are reflected in the table below (in thousands). December 31, 2023 2022 Deferred tax assets: Accrued reclamation costs $ 33,451 $ 33,007 Deferred exploration 22,341 22,584 Foreign net operating losses 52,091 71,391 Domestic net operating losses 214,137 211,381 Foreign exchange loss 22,247 24,235 Foreign tax credit carryforward 2,026 2,493 Miscellaneous 35,060 39,628 Total deferred tax assets 381,353 404,719 Valuation allowance (100,910 ) (72,856 ) Total deferred tax assets 280,443 331,863 Deferred tax liabilities: Miscellaneous (12,950 ) (9,020 ) Properties, plants and equipment (369,445 ) (427,584 ) Total deferred tax liabilities (382,395 ) (436,604 ) Net deferred tax liability $ (101,952 ) $ (104,741 )
Schedule of Changes in Valuation Allowance	The changes in the valuation allowance for the years ended December 31, 2023, 2022 and 2021, are as follows (in thousands): 2023 2022 2021 Balance at beginning of year $ (72,856 ) $ (39,152 ) $ (77,210 ) Valuation allowance on deferred tax assets acquired with the ATAC (2023) and Alexco (2022) acquisitions (8,077 ) (25,591 ) —  Increase related to non-recognition of deferred tax assets due to uncertainty of recovery and increase related to non-utilization of net operating loss carryforwards (21,114 ) (13,256 ) (20,304 ) Decrease related to either or a combination of (i) utilization, (ii) release due to future benefit, and (iii) expiration of deferred tax assets as applicable 1,137 5,143 58,362 Balance at end of year $ (100,910 ) $ (72,856 ) $ (39,152 )

Note 8 - (Loss) Income per Co_2

Note 8 - (Loss) Income per Common Share (Tables)	12 Months Ended
	Dec. 31, 2023
Notes To Financial Statements [Abstract]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Year ended December 31, 2023 2022 2021 Numerator Net (loss) income $ (84,217 ) $ (37,348 ) $ 35,095 Preferred stock dividends (552 ) (552 ) (552 ) Net (loss) income applicable to common stockholders $ (84,769 ) $ (37,900 ) $ 34,543 Denominator Basic weighted average common shares 605,668 557,344 536,192 Dilutive stock options, restricted stock units, and warrants —  —  5,984 Diluted weighted average common shares 605,668 557,344 542,176 Basic (loss) income per common share $ (0.14 ) $ (0.07 ) $ 0.06 Diluted (loss) income per common share $ (0.14 ) $ (0.07 ) $ 0.06

Note 9 - Debt, Credit Facilit_2

Note 9 - Debt, Credit Facility and Leases (Tables)	12 Months Ended
	Dec. 31, 2023
Line of Credit Facility [Abstract]
Schedule of Long-term Debt	The following tables summarize our long-term debt balances as of December 31, 2023 and 2022 (in thousands): December 31, 2023 Senior Notes IQ Notes Total Principal $ 475,000 $ 36,473 $ 511,473 Unamortized discount/premium and issuance costs (3,730 ) 257 (3,473 ) Long-term debt balance $ 471,270 $ 36,730 $ 508,000 December 31, 2022 Senior Notes IQ Notes Total Principal $ 475,000 $ 35,614 $ 510,614 Unamortized discount/premium and issuance costs (4,640 ) 392 (4,248 ) Long-term debt balance $ 470,360 $ 36,006 $ 506,366
Scheduled of Annual Future Payments, Including Interest	The following table summarizes the scheduled annual future payments, including interest, for the Senior Notes and IQ Notes as of December 31, 2023 (in thousands). The amounts for the IQ Notes are stated in USD based on the USD/CAD exchange rate as of December 31, 2023. Senior Notes IQ Notes 2024 $ 34,438 $ 2,376 2025 34,438 37,704 2026 34,438 —  2027 34,438 —  2028 479,303 —  2029 —  —  Total $ 617,055 $ 40,080
Schedule of Annual Maturities of Finance Lease Commitments, Including Interest	At December 31, 2023, the annual maturities of finance lease commitments, including interest, were (in thousands): Twelve-month period ending December 31, 2024 $ 11,172 2025 7,744 2026 5,757 2027 5,119 2028 —  Total 29,792 Less: effect of interest (2,977 ) Net finance lease obligation $ 26,815
Schedule of Annual Maturities of Undiscounted Operating Lease Payments	At December 31, 2023, the annual maturities of undiscounted operating lease payments, including assumed extensions beyond the current lease terms, were (in thousands): Twelve-month period ending December 31, 2024 $ 1,290 2025 1,278 2026 1,278 2027 1,171 2028 1,033 More than 5 years 5,566 Total 11,616 Less: effect of discounting (2,982 ) Operating lease liability $ 8,634

Note 10 - Derivative Instrume_2

Note 10 - Derivative Instruments (Tables)	12 Months Ended
	Dec. 31, 2023
Table Text Block [Abstract]
Schedule of Foreign Exchange Contracts, Statement of Financial Position	As of December 31, 2023 and 2022, we recorded the following balances for the fair value of the contracts (in millions): December 31, Balance sheet line item: 2023 2022 Other current assets $ 2.7 $ 1.1 Other non-current assets 2.0 0.4 Current derivative liabilities (1.1 ) (4.0 ) Non-current derivative liabilities (0.4 ) (3.6 )
Schedule of Notional Amounts of Outstanding Derivative Positions	The following tables summarize the quantities of metals committed under forward sales contracts at December 31, 2023 and 2022: December 31, 2023 Ounces/pounds under contract (in 000’s) Average price per ounce/pound Silver Gold Zinc Lead Silver Gold Zinc Lead Contracts on provisional sales 2023 settlements 735 3 441 15,542 24.40 2,045 1.51 1.00 Contracts on forecasted sales 2024 settlements —  —  —  56,713 N/A N/A N/A 0.98 2025 settlements —  —  —  49,273 N/A N/A N/A 0.98 December 31, 2022 Ounces/pounds under contract (in 000’s) Average price per ounce/pound Silver Gold Zinc Lead Silver Gold Zinc Lead Contracts on provisional sales 2022 settlements 3,124 8 18,629 11,960 $ 21.55 $ 1,795 $ 1.38 $ 0.98 Contracts on forecasted sales 2022 settlements —  —  37,533 75,618 N/A N/A $ 1.34 $ 1.00 2023 settlements —  —  —  45,856 N/A N/A N/A $ 0.99
Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position, Location	At December 31, 2023 and 2022, we recorded the following balances for the fair value of forward contracts held at that time (in millions): December 31, 2023 December 31, 2022 Balance sheet line item: Contracts Contracts liability Net asset Contracts Contracts Net asset Other current assets $ 3.1 $ —  $ 3.1 $ 1.2 $ —  $ 1.2 Other non-current assets 1.5 —  1.5 0.1 —  0.1 Current derivatives liability —  (0.1 ) (0.1 ) —  (12.1 ) (12.1 ) Non-current derivatives liability $ —  $ —  $ —  $ —  $ (2.5 ) $ (2.5 )

Note 11 - Fair Value Measuremen

Note 11 - Fair Value Measurement (Tables)	12 Months Ended
	Dec. 31, 2023
Fair Value Disclosures [Abstract]
Fair value adjustments net	Fair value adjustments, net is comprised of the following (in thousands): Year Ended December 31, 2023 2022 2021 Gain (loss) on derivative contracts $ 3,168 $ 844 $ (32,655 ) Unrealized investments equity securities (243 ) (5,632 ) (4,295 ) Gain on disposition exchange of investments —  65 1,158 Total fair value adjustments, net $ 2,925 $ (4,723 ) $ (35,792 )
Schedule of assets and liabilities at fair value on a recurring basis	The table below sets forth our assets and liabilities (in thousands) that were accounted for at fair value on a recurring basis and the fair value calculation input hierarchy level that we have determined applies to each asset and liability category. See Note 6 Balance at Balance at Input Assets: Cash and cash equivalents: Money market funds and other bank deposits $ 106,374 $ 104,743 Level 1 Current and non-current investments: Equity securities 32,284 24,018 Level 1 Trade accounts receivable: Receivables from provisional concentrate sales 14,740 45,146 Level 2 Derivative contracts - other current assets and other non-current assets: Metal forward contracts 4,698 1,309 Level 2 Foreign exchange contracts 4,657 1,518 Level 2 Restricted cash and cash equivalents balances: Certificates of deposit and other deposits 1,165 1,164 Level 1 Total assets $ 163,918 $ 177,898 Liabilities Derivative contracts - current and non-current derivative liabilities: Metal forward contracts $ 40 $ 14,643 Level 2 Foreign exchange contracts 1,508 7,548 Level 2 Total liabilities $ 1,548 $ 22,191

Note 12 - Stockholders' Equity

Note 12 - Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2023
Equity [Abstract]
Schedule of Potential Per Share Dividend Amounts Quarterly Price Levels	Quarterly Average Quarterly Silver- Annualized Silver- Annualized Minimum Annualized Dividends <$20 $ —  $ —  $ 0.015 $ 0.015 $20 $ 0.0025 $ 0.01 $ 0.015 $ 0.025 $25 $ 0.0100 $ 0.04 $ 0.015 $ 0.055 $30 $ 0.0150 $ 0.06 $ 0.015 $ 0.075 $35 $ 0.0250 $ 0.10 $ 0.015 $ 0.115 $40 $ 0.0350 $ 0.14 $ 0.015 $ 0.155 $45 $ 0.0450 $ 0.18 $ 0.015 $ 0.195 $50 $ 0.0550 $ 0.22 $ 0.015 $ 0.235
Schedule of Stockholders' Equity Note, Warrants or Rights	Number of warrants Exercise price Expiration date 2,068,000 $ 1.57 February 2029 2,068,000 $ 8.02 April 2032
Share-Based Payment Arrangement, Performance Shares, Activity	Shares Weighted Unvested, January 1, 2021 1,813,895 $ 0.41 Granted 122,462 $ 13.70 Canceled (174,108 ) $ 0.76 Vested (1) (887,827 ) $ —  Unvested, December 31, 2021 874,422 $ 2.61 Granted 322,796 $ 3.78 Vested (1) (597,360 ) $ 0.31 Unvested, December 31, 2022 599,858 $ 5.54 Granted 336,096 $ 3.54 Canceled (109,727 ) $ 5.30 Vested (1) (205,425 ) $ 8.17 Unvested, December 31, 2023 620,802 $ 3.63 (1) Vested on December 31 and distributed in February of the following year
Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity	Shares Weighted Unvested, January 1, 2021 3,936,134 $ 2.55 Granted 629,437 $ 7.88 Canceled (770,416 ) $ 2.82 Vested (1,772,803 ) $ 2.60 Unvested, December 31, 2021 2,022,352 $ 3.97 Granted 1,256,532 $ 4.41 Canceled (177,801 ) $ 4.41 Vested (1,304,968 ) $ 3.97 Unvested, December 31, 2022 1,796,115 $ 4.23 Granted 1,316,120 $ 5.05 Canceled (336,060 ) $ 4.90 Vested (918,927 ) $ 5.05 Unvested, December 31, 2023 1,857,248 $ 4.28

Note 13 - Accumulated Other C_2

Note 13 - Accumulated Other Comprehensive Income (Loss) (Tables)	12 Months Ended
	Dec. 31, 2023
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule of Accumulated other comprehensive income (loss), net	Changes in fair Adjustments Total Balance January 1, 2021 $ 7,632 $ (40,521 ) $ (32,889 ) 2021 change (12,307 ) 16,740 4,433 Balance December 31, 2021 (4,675 ) (23,781 ) (28,456 ) 2022 change 13,837 17,067 30,904 Balance December 31, 2022 9,162 (6,714 ) 2,448 2023 change 4,546 (1,157 ) 3,389 Balance December 31, 2023 $ 13,708 $ (7,871 ) $ 5,837 Changes in fair Adjustments Total Balance January 1, 2021 $ —  $ 12,575 $ 12,575 2021 change 4,689 (6,379 ) (1,690 ) Balance December 31, 2021 4,689 6,196 10,885 2022 change (5,233 ) (6,454 ) (11,687 ) Balance December 31, 2022 (544 ) (258 ) (802 ) 2023 change (1,683 ) 428 (1,255 ) Balance December 31, 2023 $ (2,227 ) $ 170 $ (2,057 )

Note 14 - Product Inventories (

Note 14 - Product Inventories (Tables)	12 Months Ended
	Dec. 31, 2023
Inventory Disclosure [Abstract]
Schedule of Our Major Components of Product Inventories	Our major components of product inventories are ( in thousands 2023 2022 Concentrates $ 13,328 $ 21,513 Stockpiled ore 7,168 6,869 In-process 8,327 8,921 Total product inventories $ 28,823 $ 37,303

Note 15 - Properties, Plants,_2

Note 15 - Properties, Plants, Equipment and Mineral Interests, and Lease Commitments (Tables)	12 Months Ended
	Dec. 31, 2023
Property, Plant and Equipment [Abstract]
Schedule of properties, plants, equipment, and mineral interests	December 31, 2023 2022 Mining properties, including asset retirement obligations $ 911,018 $ 871,027 Development costs 630,391 588,298 Plants and equipment 1,666,577 1,514,906 Land 35,112 35,644 Mineral interests 1,164,390 1,171,261 Construction in progress 121,022 134,600 4,528,510 4,315,736 Less accumulated depreciation, depletion and amortization 1,862,260 1,745,946 Net carrying value $ 2,666,250 $ 2,569,790

Note 1 - The Company (Additiona

Note 1 - The Company (Additional Information) (Details) - Jul. 10, 2023 - ATAC Resources Ltd $ in Millions, $ in Millions	USD ($) shares	CAD ($) shares
Asset Acquisition [Line Items]
Asset acquisition, Consideration transferred	$ 19.4
Issuance of Common Share | shares	3,676,904
Share exchange ratio	0.0166%	0.0166%
Acquisition Costs	$ 0.6
Stake percentage	19.90%	19.90%
Acquired share | shares	5,502,956	5,502,956
Asset acquisition, Consideration transferred, Total non cash consideration		$ 2
Mineral Interests [Member]
Asset Acquisition [Line Items]
Asset acquisition, Recognized identifiable assets acquired and liabilities assumed, Mineral interests	$ 18.1

Note 2 - Summary of Significa_3

Note 2 - Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Restricted cash and cash equivalents	$ 1,165	$ 1,164
Capitalized Drilling Costs	$ 17,600	$ 11,200	$ 5,200
Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	3 years
Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	14 years

Note 3 - Investments (Additiona

Note 3 - Investments (Additional Information) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Schedule of Investments [Abstract]
Non-current investments	$ 33.7	$ 24
Equity Losses	0.3
Payments to acquire marketable securities	9	32
Unrealized losses on investment	$ 0.2	$ 5.6	$ 4.3

Note 4 -Business Segments, Sale

Note 4 -Business Segments, Sales of Products and Significant Customers (Additional Information) (Details) $ in Thousands, oz in Millions, lb in Millions	12 Months Ended
	Dec. 31, 2023 USD ($) Segment oz lb	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | Segment	4
Derivative, loss on derivative	$ 19,700	$ 5,800	$ 500
Trade	14,740	45,146
Allowance for doubtful accounts	$ 0	$ 0
Derivative, loss, statement of income or comprehensive income [Extensible Enumeration]	Unrealized gain (loss) on derivative contracts designated as hedge transactions	Unrealized gain (loss) on derivative contracts designated as hedge transactions	Unrealized gain (loss) on derivative contracts designated as hedge transactions
Silver Contracts [Member]
Segment Reporting Information [Line Items]
Metals contained in concentrates (Ounce) | oz	0.7
Gold [Member]
Segment Reporting Information [Line Items]
Metals contained in concentrates (Ounce) | oz	3,490
Zinc [Member]
Segment Reporting Information [Line Items]
Metals contained in concentrates (Ounce) | lb	0.4
Lead [Member]
Segment Reporting Information [Line Items]
Metals contained in concentrates (Ounce) | lb	12
Environmental Services [Member]
Segment Reporting Information [Line Items]
Revenues	$ 5,300

Note 4 -Business Segments, Sa_2

Note 4 -Business Segments, Sales of Products and Significant Customers - Schedule of Information About Reportable Segments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Total sales	$ 720,227	$ 718,905	$ 807,473
Income (loss) from operations	(44,674)	(12,438)	83,420
Capital additions (excluding non-cash items)	223,887	149,378	109,048
Depreciation, depletion and amortization	148,774	143,938	171,793
Other significant non-cash items	42,930	10,716	(6,305)
Identifiable assets	3,011,104	2,927,172	2,728,808
Greens Creek [Member]
Segment Reporting Information [Line Items]
Total sales	384,504	335,062	384,843
Income (loss) from operations	113,551	87,297	164,666
Capital additions (excluding non-cash items)	43,542	36,898	23,883
Depreciation, depletion and amortization	53,995	48,911	48,710
Other significant non-cash items	11,098	2,821	3,653
Identifiable assets	569,369	582,687	589,944
Lucky Friday [Member]
Segment Reporting Information [Line Items]
Total sales	116,284	147,814	131,488
Income (loss) from operations	4,811	27,636	31,683
Capital additions (excluding non-cash items)	65,337	50,992	29,885
Depreciation, depletion and amortization	24,325	33,704	26,846
Other significant non-cash items	(916)	1,138	1,048
Identifiable assets	578,110	571,510	516,545
Keno Hill [Member]
Segment Reporting Information [Line Items]
Total sales	35,518	0	0
Income (loss) from operations	(35,344)	(4,249)	0
Capital additions (excluding non-cash items)	44,672	19,725	0
Depreciation, depletion and amortization	4,277	0	0
Other significant non-cash items	376	1,669	0
Identifiable assets	362,986	276,096	0
Casa Berardi [Member]
Segment Reporting Information [Line Items]
Total sales	177,678	235,136	245,152
Income (loss) from operations	(56,683)	(21,799)	5,807
Capital additions (excluding non-cash items)	70,056	39,667	49,617
Depreciation, depletion and amortization	66,037	60,962	80,744
Other significant non-cash items	13,378	1,520	1,284
Identifiable assets	683,035	681,631	701,868
Other Segments [Member]
Segment Reporting Information [Line Items]
Total sales	6,243	893	45,990
Income (loss) from operations	(71,009)	(101,323)	(118,736)
Capital additions (excluding non-cash items)	280	2,096	5,663
Depreciation, depletion and amortization	140	361	15,493
Other significant non-cash items	18,994	3,568	(12,290)
Identifiable assets	$ 817,604	$ 815,248	$ 920,451

Note 4 -Business Segments, Sa_3

Note 4 -Business Segments, Sales of Products and Significant Customers - Schedule of Long-lived Assets by Geographic Area (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Long-lived assets	$ 2,666,250	$ 2,569,790
UNITED STATES
Segment Reporting Information [Line Items]
Long-lived assets	1,698,285	1,670,676
CANADA
Segment Reporting Information [Line Items]
Long-lived assets	960,109	891,375
MEXICO
Segment Reporting Information [Line Items]
Long-lived assets	$ 7,856	$ 7,739

Note 4 -Business Segments, Sa_4

Note 4 -Business Segments, Sales of Products and Significant Customers - Schedule of Sales Contributed by Each Segment (Details) - Revenue Benchmark [Member] - Customer Concentration Risk [Member]	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Percentage of sales	100%	100%	100%
Greens Creek [Member]
Segment Reporting Information [Line Items]
Percentage of sales	53.70%	46.60%	47.60%
Lucky Friday [Member]
Segment Reporting Information [Line Items]
Percentage of sales	16.30%	20.60%	16.30%
Keno Hill [Member]
Segment Reporting Information [Line Items]
Percentage of sales	5%	0%	0%
Casa Berardi [Member]
Segment Reporting Information [Line Items]
Percentage of sales	24.90%	32.70%	30.40%
Other Segments [Member]
Segment Reporting Information [Line Items]
Percentage of sales	0.10%	0.10%	5.70%

Note 4 -Business Segments, Sa_5

Note 4 -Business Segments, Sales of Products and Significant Customers - Schedule of Sales of Products by Metal (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Less: Smelter and refining charges	$ (50,909)	$ (51,973)	$ (48,933)
Total sales	720,227	718,905	807,473
Silver Contracts [Member]
Segment Reporting Information [Line Items]
Total sales	302,284	265,054	293,646
Gold [Member]
Segment Reporting Information [Line Items]
Total sales	274,613	298,910	362,037
Lead [Member]
Segment Reporting Information [Line Items]
Total sales	72,726	83,384	75,431
Zinc [Member]
Segment Reporting Information [Line Items]
Total sales	116,230	123,057	125,292
Total Metal [Member]
Segment Reporting Information [Line Items]
Total sales	714,944	718,432	807,473
Environmental Remediation Services [Member]
Segment Reporting Information [Line Items]
Total sales	$ 5,283	$ 473	$ 0

Note 4 -Business Segments, Sa_6

Note 4 -Business Segments, Sales of Products and Significant Customers - Schedule of Sales Information by Geographic Area (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Sales by significant product type	$ 695,267	$ 724,255	$ 808,016
Doré and Metals from Doré [Member]
Segment Reporting Information [Line Items]
Sales by significant product type	211,321	255,608	313,337
Carbon [Member]
Segment Reporting Information [Line Items]
Sales by significant product type	4,333	2,607	4,117
Silver Concentrate [Member]
Segment Reporting Information [Line Items]
Sales by significant product type	356,941	329,165	345,732
Zinc Concentrate [Member]
Segment Reporting Information [Line Items]
Sales by significant product type	80,274	109,177	112,448
Precious Metals Concentrate [Member]
Segment Reporting Information [Line Items]
Sales by significant product type	42,398	27,698	32,382
UNITED STATES
Segment Reporting Information [Line Items]
Sales by significant product type	36,307	21,938	71,278
CANADA
Segment Reporting Information [Line Items]
Sales by significant product type	375,092	406,600	419,090
JAPAN
Segment Reporting Information [Line Items]
Sales by significant product type	52,744	51,375	63,588
KOREA
Segment Reporting Information [Line Items]
Sales by significant product type	127,590	107,828	203,115
CHINA
Segment Reporting Information [Line Items]
Sales by significant product type	$ 103,534	$ 136,514	$ 50,945

Note 4 -Business Segments, Sa_7

Note 4 -Business Segments, Sales of Products and Significant Customers - Schedule of Sales from Continuing Operations to Significant Metals Customers (Details) - Revenue from Contract with Customer Benchmark [Member] - Customer Concentration Risk [Member]	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Customer A [Member]
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	24.20%	35.40%	37.20%
Customer B [Member]
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	11.80%	23.90%	21.50%
Customer C [Member]
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	15.50%	11.30%	21.60%
Customer D [Member]
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	15.80%	3.50%	6.20%

Note 4 -Business Segments, Sa_8

Note 4 -Business Segments, Sales of Products and Significant Customers - Summary of Trade Accounts Receivable (Details) - Trade Accounts Receivable - Customer Concentration Risk [Member]	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Customer B [Member]
Segment Reporting Information [Line Items]
Percentage of accounts receivable	22.20%	57.50%
Customer D [Member]
Segment Reporting Information [Line Items]
Percentage of accounts receivable	34.80%	0%
Customer E [Member]
Segment Reporting Information [Line Items]
Percentage of accounts receivable	24.20%	3.20%
Customer F [Member]
Segment Reporting Information [Line Items]
Percentage of accounts receivable	0%	15.90%
Customer G [Member]
Segment Reporting Information [Line Items]
Percentage of accounts receivable	0%	11.80%

Note 5 - Environmental and Re_3

Note 5 - Environmental and Reclamation Activities - Schedule of Reclamation and Closure Costs Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Environmental and Reclamation Activities [Line Items]
Reclamation and closure costs	$ 120,457	$ 116,999	$ 113,231	$ 116,048
Reclamation and closure costs, current	$ (9,660)	$ (8,591)
Environmental Loss Contingency, Current, Statement of Financial Position [Extensible Enumeration]	Accrued Reclamation Costs, Current	Accrued Reclamation Costs, Current
Reclamation and closure costs, long-term	$ 110,797	$ 108,408
Environmental Loss Contingency, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Mine Reclamation and Closing Liability, Noncurrent	Mine Reclamation and Closing Liability, Noncurrent
Operating Properties [Member] | Greens Creek [Member]
Environmental and Reclamation Activities [Line Items]
Reclamation and closure costs	$ 39,893	$ 37,212
Operating Properties [Member] | Lucky Friday [Member]
Environmental and Reclamation Activities [Line Items]
Reclamation and closure costs	12,022	13,343
Operating Properties [Member] | Casa Berardi [Member]
Environmental and Reclamation Activities [Line Items]
Reclamation and closure costs	11,157	11,352
Non-Operating Properties [Member] | Keno Hill [Member]
Environmental and Reclamation Activities [Line Items]
Reclamation and closure costs	$ 3,360	$ 4,514
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]	Employee-related Liabilities, Current	Employee-related Liabilities, Current
Non-Operating Properties [Member] | Nevada Operations [Member]
Environmental and Reclamation Activities [Line Items]
Reclamation and closure costs	$ 30,539	$ 28,171
Non-Operating Properties [Member] | San Sebastian [Member]
Environmental and Reclamation Activities [Line Items]
Reclamation and closure costs	2,061	1,989
Non-Operating Properties [Member] | Troy Mine [Member]
Environmental and Reclamation Activities [Line Items]
Reclamation and closure costs	5,238	6,980
Non-Operating Properties [Member] | Johnny M [Member]
Environmental and Reclamation Activities [Line Items]
Reclamation and closure costs	10,148	8,961
Non-Operating Properties [Member] | All Other Sites [Member]
Environmental and Reclamation Activities [Line Items]
Reclamation and closure costs	$ 6,039	$ 4,477

Note 5 - Environmental and Re_4

Note 5 - Environmental and Reclamation Activities - Schedule of Reclamation and Closure Costs Activities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Environmental and Reclamation Activities [Abstract]
Beginning balance	$ 116,999	$ 113,231	$ 116,048
Accruals for estimated costs	2,952	2,874	4,952
Accretion expense	7,740	5,995	6,454
Revision of estimated cash flows due to changes in reclamation plans	(29)	452	(8,781)
Payment of reclamation obligations	(7,205)	(5,553)	(5,442)
Ending balance	$ 120,457	$ 116,999	$ 113,231

Note 5 - Environmental and Re_5

Note 5 - Environmental and Reclamation Activities - Schedule of Change in Asset Retirement Obligation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Environmental and Reclamation Activities [Abstract]
Beginning Balance at January 1	$ 96,620	$ 95,033
Changes in obligations due to changes in reclamation plans	(29)	452
Accretion expense	7,740	5,995
Payment of reclamation obligations	(5,264)	(4,860)
Ending balance at December 31	$ 99,067	$ 96,620

Note 5 - Environmental and Re_6

Note 5 - Environmental and Reclamation Activities - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Environmental and Reclamation Activities [Line Items]
Reclamation and closure costs	$ 120,457	$ 116,999	$ 113,231	$ 116,048
Minimum [Member]
Environmental and Reclamation Activities [Line Items]
Inflation Rate, Asset Retirement Obligation	2%
Minimum [Member] | Reclamation and Abandonment Costs [Member] | Measurement Input, Risk Free Interest Rate [Member]
Environmental and Reclamation Activities [Line Items]
Derivative liability, measurement input	0.0575
Minimum [Member] | Asset Retirement Obligation [Member] | Measurement Input, Risk Free Interest Rate [Member]
Environmental and Reclamation Activities [Line Items]
Derivative liability, measurement input	0.0275
Maximum [Member]
Environmental and Reclamation Activities [Line Items]
Inflation Rate, Asset Retirement Obligation	4%
Maximum [Member] | Reclamation and Abandonment Costs [Member] | Measurement Input, Risk Free Interest Rate [Member]
Environmental and Reclamation Activities [Line Items]
Derivative liability, measurement input	0.145
Maximum [Member] | Asset Retirement Obligation [Member] | Measurement Input, Risk Free Interest Rate [Member]
Environmental and Reclamation Activities [Line Items]
Derivative liability, measurement input	0.075

Note 6 - Employee Benefit Pla_3

Note 6 - Employee Benefit Plans (Details Textual) - USD ($) $ in Thousands	2 Months Ended	12 Months Ended
	Feb. 17, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Expected rate of return on plan assets	7.25%	7.25%	7.25%
Defined Benefit Plan Assumed Long Term Rate Basis Spread		1
Defined Benefit Plan, Plan Assets, Contributions by Employer		$ 1,756	$ 10,330
Defined Contribution Plan, Employer Matching Contribution, Percent of Match		55%
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay		5%
Defined Benefit Plan, Plan Assets, Contributions by Employer		$ 1,300	600	$ 500
Capital Accumulation 401(K) Plan [Member]
Defined Benefit Plan, Plan Assets, Contributions by Employer		$ 4,600	4,500	4,300
Defined Contribution Plan, Employer Matching Contribution, Percent of Match		100%
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay		6%
Pension plans
Defined Benefit Plan, Plan Assets, Contributions by Employer		$ 1,000	5,500
Supplemental Employee Retirement Plan [Member]
Defined Benefit Plan, Plan Assets, Contributions by Employer			4,200
Hecla Plans | Common Stock [Member]
Common stock investments		19,900	21,700
Lucky Friday plan | Common Stock [Member]
Common stock investments		2,900	3,300
Nonoperating Income (Expense) [Member]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Except Service cost		$ (4,100)	$ (5,400)	$ 600

Note 6 - Employee Benefit Pla_4

Note 6 - Employee Benefit Plans - Change in Benefit Obligation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan [Abstract]
Benefit obligation at beginning of year	$ 148,143	$ 195,862
Service cost	3,794	6,262	$ 5,820
Interest cost	7,974	5,476	4,990
Change due to mortality change	643	486
Change due to discount rate change	(3,635)	(54,977)
Actuarial return	401	1,841
Benefits paid	(7,894)	(6,807)
Benefit obligation at end of year	149,426	148,143	195,862
Fair value of plan assets at beginning of year	175,159	189,874
Actual return on plan assets	7,937	(18,238)
Employer contributions	1,756	10,330
Benefits paid	(7,894)	(6,807)
Fair value of plan assets at end of year	176,958	175,159	$ 189,874
Funded status at end of year	$ 27,532	$ 27,016

Note 6 - Employee Benefit Pla_5

Note 6 - Employee Benefit Plans - Amounts Recognized in the Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Liabilities, Current [Abstract]
Accrued benefit asset	$ 28,399	$ 27,806
Accrued benefit liability	(867)	(790)
Accumulated other comprehensive loss	8,031	6,446
Net amount recognized	$ 35,563	$ 33,462

Note 6 - Employee Benefit Pla_6

Note 6 - Employee Benefit Plans - Benefit Obligation and Prepaid Benefit Costs Assumptions (Details)		2 Months Ended	12 Months Ended
		Feb. 17, 2022	Dec. 31, 2023		Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Discount rate: net periodic pension cost			5.77%		5.54%
Discount rate: projected benefit obligation			5.77%		5.54%
Expected rate of return on plan assets		7.25%	7.25%		7.25%
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Rate of compensation increase: net periodic pension cost			5%	[1]	5%
Rate of compensation increase: projected benefit obligation			4%	[2]	5%
Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Rate of compensation increase: net periodic pension cost			2%	[1]	2%
Rate of compensation increase: projected benefit obligation			2%	[2]	2%
Median [Member]
Defined Benefit Plan Disclosure [Line Items]
Rate of compensation increase: projected benefit obligation	[2]		3%
[1]5% for 2023 and 2% per year thereafter.[2]4% for 2023, 3% for 2024 and 2% per year thereafter.

Note 6 - Employee Benefit Pla_7

Note 6 - Employee Benefit Plans - Net Periodic Pension Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan [Abstract]
Service cost	$ 3,794	$ 6,262	$ 5,820
Interest cost	7,974	5,476	4,990
Expected return on plan assets	$ (12,428)	$ (13,452)	$ (9,252)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Comprehensive Income (Loss), Net of Tax, Attributable to Parent	Comprehensive Income (Loss), Net of Tax, Attributable to Parent	Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Amortization of prior service benefit	$ 500	$ 511	$ 394
Amortization of net (loss) gain	(188)	2,049	4,502
Net periodic pension (benefit) cost	$ (348)	$ 846	$ 6,454

Note 6 - Employee Benefit Pla_8

Note 6 - Employee Benefit Plans - Investment Policy Allocation (Details)	Dec. 31, 2023
Large Cap US Equity [Member]
Investment policy allocation	17%
Large Cap US Equity [Member] | Maximum [Member]
Investment policy allocation	20%
Small Cap US Equity [Member]
Investment policy allocation	8%
Small Cap US Equity [Member] | Maximum [Member]
Investment policy allocation	10%
Non-U.S. equity [Member]
Investment policy allocation	25%
Non-U.S. equity [Member] | Maximum [Member]
Investment policy allocation	30%
U.S. Fixed Income [Member]
Investment policy allocation	18%
U.S. Fixed Income [Member] | Maximum [Member]
Investment policy allocation	23%
Emerging Market Debt [Member]
Investment policy allocation	5%
Emerging Market Debt [Member] | Maximum [Member]
Investment policy allocation	8%
Real Estate [Member]
Investment policy allocation	15%
Real Estate [Member] | Maximum [Member]
Investment policy allocation	18%
Absolute Return [Member]
Investment policy allocation	5%
Absolute Return [Member] | Maximum [Member]
Investment policy allocation	7%
Company Stock/Real Return [Member]
Investment policy allocation	7%
Company Stock/Real Return [Member] | Maximum [Member]
Investment policy allocation	13%

Note 6 - Employee Benefit Pla_9

Note 6 - Employee Benefit Plans - Fair Value by Asset Category (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Total fair value	$ 176,958	$ 175,159	$ 189,874
Fair Value, Inputs, Level 1 [Member] | Hecla Mining Company Retirement Plan [Member]
Total fair value	103,962	98,289
Fair Value, Inputs, Level 1 [Member] | Lucky Friday Pension Plan [Member]
Total fair value	15,781	15,333
Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] | Hecla Mining Company Retirement Plan [Member]
Total fair value	103,962	98,289
Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] | Lucky Friday Pension Plan [Member]
Total fair value	15,781	15,333
Fair Value Measured at Net Asset Value Per Share [Member] | Hecla Mining Company Retirement Plan [Member]
Total fair value	150,377	148,370
Fair Value Measured at Net Asset Value Per Share [Member] | Lucky Friday Pension Plan [Member]
Total fair value	26,581	26,789
Interest-Bearing Deposits [Member] | Hecla Mining Company Retirement Plan [Member]
Total fair value	525	743
Interest-Bearing Deposits [Member] | Lucky Friday Pension Plan [Member]
Total fair value	117	133
Interest-Bearing Deposits [Member] | Fair Value, Inputs, Level 1 [Member] | Hecla Mining Company Retirement Plan [Member]
Total fair value	525	743
Interest-Bearing Deposits [Member] | Fair Value, Inputs, Level 1 [Member] | Lucky Friday Pension Plan [Member]
Total fair value	117	133
Common Stock [Member] | Hecla Mining Company Retirement Plan [Member]
Total fair value	19,933	21,678
Common Stock [Member] | Lucky Friday Pension Plan [Member]
Total fair value	2,872	3,295
Common Stock [Member] | Fair Value, Inputs, Level 1 [Member] | Hecla Mining Company Retirement Plan [Member]
Total fair value	19,933	21,678
Common Stock [Member] | Fair Value, Inputs, Level 1 [Member] | Lucky Friday Pension Plan [Member]
Total fair value	2,872	3,295
Mutual Funds [Member] | Hecla Mining Company Retirement Plan [Member]
Total fair value	83,504	75,868
Mutual Funds [Member] | Lucky Friday Pension Plan [Member]
Total fair value	12,792	11,905
Mutual Funds [Member] | Fair Value, Inputs, Level 1 [Member] | Hecla Mining Company Retirement Plan [Member]
Total fair value	83,504	75,868
Mutual Funds [Member] | Fair Value, Inputs, Level 1 [Member] | Lucky Friday Pension Plan [Member]
Total fair value	12,792	11,905
Real Estate Investments [Member] | Hecla Mining Company Retirement Plan [Member]
Total fair value	18,029	23,967
Real Estate Investments [Member] | Lucky Friday Pension Plan [Member]
Total fair value	4,173	5,550
Real Estate Investments [Member] | Fair Value, Inputs, Level 1 [Member] | Hecla Mining Company Retirement Plan [Member]
Total fair value		0
Real Estate Investments [Member] | Fair Value, Inputs, Level 1 [Member] | Lucky Friday Pension Plan [Member]
Total fair value		0
Hedge Funds [Member] | Hecla Mining Company Retirement Plan [Member]
Total fair value		0
Hedge Funds [Member] | Lucky Friday Pension Plan [Member]
Total fair value		0
Hedge Funds [Member] | Fair Value, Inputs, Level 1 [Member] | Hecla Mining Company Retirement Plan [Member]
Total fair value		0
Hedge Funds [Member] | Fair Value, Inputs, Level 1 [Member] | Lucky Friday Pension Plan [Member]
Total fair value		0
Common Collective Funds [Member] | Hecla Mining Company Retirement Plan [Member]
Total fair value	28,386	26,114
Common Collective Funds [Member] | Lucky Friday Pension Plan [Member]
Total fair value	6,627	5,906
Common Collective Funds [Member] | Fair Value, Inputs, Level 1 [Member] | Hecla Mining Company Retirement Plan [Member]
Total fair value		0
Common Collective Funds [Member] | Fair Value, Inputs, Level 1 [Member] | Lucky Friday Pension Plan [Member]
Total fair value		0
Investments Measured At Net Asset Value [Member] | Hecla Mining Company Retirement Plan [Member]
Total fair value	46,415	50,081
Investments Measured At Net Asset Value [Member] | Lucky Friday Pension Plan [Member]
Total fair value	$ 10,800	11,456
Investments Measured At Net Asset Value [Member] | Fair Value, Inputs, Level 1 [Member] | Hecla Mining Company Retirement Plan [Member]
Total fair value		0
Investments Measured At Net Asset Value [Member] | Fair Value, Inputs, Level 1 [Member] | Lucky Friday Pension Plan [Member]
Total fair value		$ 0

Note 6 - Employee Benefit Pl_10

Note 6 - Employee Benefit Plans - Future Benefit Payments (Details) $ in Thousands	Dec. 31, 2023 USD ($)
Defined Benefit Plan [Abstract]
2024	$ 8,886
2025	10,031
2026	10,005
2027	9,981
2028	10,321
Years 2029-2033	$ 51,163

Note 6 - Employee Benefit Pl_11

Note 6 - Employee Benefit Plans - Accumulated Benefit Obligations (Details) - Plan Assets Exceed ABO [Member] - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	$ 149,426	$ 148,143
Accumulated benefit obligation	146,336	144,816
Fair value of plan assets	$ 176,958	$ 175,159

Note 6 - Employee Benefit Pl_12

Note 6 - Employee Benefit Plans - Pension and Benefit Plan Amounts Included in Accumulated Other Comprehensive Income (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($)
Defined Benefit Plan [Abstract]
Unamortized net loss	$ 7,462
Unamortized prior service cost	$ 579

Note 7 - Income and Mining Ta_3

Note 7 - Income and Mining Taxes - Schedule of Components of Income and Mining Tax Benefit (Provision) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Current:
Domestic	$ (3,846)	$ (3,915)	$ (7,073)
Foreign	(3,322)	(5,119)	(6,316)
Total current income and mining tax provision	(7,168)	(9,034)	(13,389)
Deferred:
Domestic	(17,058)	2,064	43,708
Foreign	23,004	14,536	(750)
Total deferred income and mining tax benefit	5,946	16,600	42,958
Total benefit (provision), Amount	$ (1,222)	$ 7,566	$ 29,569

Note 7 - Income and Mining Ta_4

Note 7 - Income and Mining Taxes - Schedule of Domestic and Foreign Components of Income (Loss) Before Income and Mining Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Line Items]
Total	$ (82,995)	$ (44,914)	$ 5,526
Domestic [Member]
Income Tax Disclosure [Line Items]
Total	43,745	(6,343)	38,003
Foreign [Member]
Income Tax Disclosure [Line Items]
Total	$ (126,740)	$ (38,571)	$ (32,477)

Note 7 - Income and Mining Ta_5

Note 7 - Income and Mining Taxes - Schedule of Effective Income Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Computed "statutory" benefit (provision), Amount	$ 17,429	$ 9,432	$ (1,161)
Computed "statutory" benefit (provision), Percentage	21%	21%	21%
Percentage depletion, Amount	$ 4,205	$ 8,542	$ 8,076
Percentage depletion, Percentage	5%	19%	(146.00%)
Change in valuation allowance, Amount	$ (20,016)	$ (8,113)	$ 38,058
Change in valuation allowance, Percentage	(24.00%)	(18.00%)	(689.00%)
State taxes, net of federal tax benefit, Amount	$ (2,731)	$ (158)	$ 965
State taxes, net of federal tax benefit, Percentage	(3.00%)	0%	(17.00%)
Foreign currency remeasurement of monetary assets and liabilities, Amount	$ (4,155)	$ 4,559	$ (3,625)
Foreign currency remeasurement of monetary assets and liabilities, Percentage	(5.00%)	10%	66%
Rate differential on foreign earnings, Amount	$ 6,553	$ 1,515	$ 2,445
Rate differential on foreign earnings, Percentage	8%	3%	(44.00%)
Compensation, Amount	$ (1,636)	$ 173	$ 1,094
Compensation, Percentage	(2.00%)	0%	(20.00%)
Mining and other taxes, Amount	$ (1,359)	$ (6,609)	$ (13,799)
Mining and other taxes, Percentage	(2.00%)	(15.00%)	250%
Other, Amount	$ 488	$ (1,775)	$ (2,484)
Other, Percentage	1%	(3.00%)	45%
Total benefit (provision), Amount	$ (1,222)	$ 7,566	$ 29,569
Total benefit (provision), Percentage	(1.00%)	17%	(535.00%)

Note 7 - Income and Mining Ta_6

Note 7 - Income and Mining Taxes - Schedule of Components of Net Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Accrued reclamation costs	$ 33,451	$ 33,007
Deferred exploration	22,341	22,584
Foreign net operating losses	52,091	71,391
Domestic net operating losses	214,137	211,381
Foreign exchange loss	22,247	24,235
Foreign tax credit carryforward	2,026	2,493
Miscellaneous	35,060	39,628
Total deferred tax assets	381,353	404,719
Valuation allowance	(100,910)	(72,856)	$ (39,152)	$ (77,210)
Total deferred tax assets	280,443	331,863
Deferred tax liabilities:
Miscellaneous	(12,950)	(9,020)
Properties, plants and equipment	(369,445)	(427,584)
Total deferred tax liabilities	(382,395)	(436,604)
Net deferred tax liability	$ (101,952)	$ (104,741)

Note 7 - Income and Mining Ta_7

Note 7 - Income and Mining Taxes - Schedule of Changes in Valuation Allowance (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Line Items]
Balance at beginning of year	$ (72,856)	$ (39,152)	$ (77,210)
Balance at end of year	(100,910)	(72,856)	(39,152)
Increase Due to Uncertainty of Recovery [Member]
Income Tax Disclosure [Line Items]
Valuation allowance, deferred tax asset	(21,114)	(13,256)	(20,304)
Decrease Related to Utilization and Expiration [Member]
Income Tax Disclosure [Line Items]
Valuation allowance, deferred tax asset	1,137	5,143	58,362
Klondex Mines Ltd [Member] | Business Acquisition [Member]
Income Tax Disclosure [Line Items]
Valuation allowance, deferred tax asset	$ (8,077)	$ (25,591)	$ 0

Note 7 - Income and Mining Ta_8

Note 7 - Income and Mining Taxes - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Line Items]
Deferred tax liabilities	$ 101,952	$ 104,741
Deferred tax assets, valuation allowance	100,910	72,856	$ 39,152	$ 77,210
Deferred tax assets, tax credit carryforwards	4,300
Unrecognized tax benefits	0	0
Tax credit carryforward, amount	20,600
Mexican Tax Authority [Member]
Income Tax Disclosure [Line Items]
Deferred tax assets, valuation allowance	13,200
Nevada Operations [Member]
Income Tax Disclosure [Line Items]
Deferred tax assets, valuation allowance	35,100
Foreign Tax Authority [Member]
Income Tax Disclosure [Line Items]
Operating loss carryforwards	188,500
Tax credit carryforward, amount	$ 2,000
Tax credit carryforward term	10 years
Tax credit carryforward, limitations on use	Our foreign tax credits will expire between 2024 and 2026.
Domestic Tax Authority [Member]
Income Tax Disclosure [Line Items]
Tax credit carryforward, valuation allowance	$ 4,300
Deferred tax assets, tax credit carryforwards	700
Operating loss carryforwards	893,600	$ 418,000
Operating loss carryforwards, Indefinite period	408,200
Tax credit carryforward, amount	3,400
Alexco Resource Corp Member
Income Tax Disclosure [Line Items]
Deferred tax assets, valuation allowance	$ 48,300

Note 8 - (Loss) Income per Co_3

Note 8 - (Loss) Income per Common Share (Details Textual) - shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2023	Dec. 31, 2022
Earnings Per Share [Abstract]
Incremental Common Shares Attributable to Share-based Payment Arrangements, Total (in shares)	2,317,007
Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants (in shares)	1,557,503
Incremental Common Shares Attributable to Dilutive Effect of Deferred Shares (in shares)	2,166,964
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance (in shares)		0	0

Note 8 - (Loss) Income per Co_4

Note 8 - (Loss) Income per Common Share - Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Earnings Per Share [Abstract]
Net Income (Loss)	$ (84,217)	$ (37,348)	$ 35,095
Preferred stock dividends	(552)	(552)	(552)
Net (loss) income applicable to common stockholders	$ (84,769)	$ (37,900)	$ 34,543
Basic weighted average common shares	605,668	557,344	536,192
Dilutive stock options, restricted stock units, and warrants	0	0	5,984,000
Diluted weighted average common shares	605,668	557,344	542,176
Basic (loss) income per common share	$ (0.14)	$ (0.07)	$ 0.06
Diluted (loss) income per common share	$ (0.14)	$ (0.07)	$ 0.06

Note 9 - Debt, Credit Facilit_3

Note 9 - Debt, Credit Facility and Leases (Details Textual) $ in Thousands, $ in Millions					12 Months Ended
	Feb. 16, 2026	Jul. 21, 2022 USD ($)	Jul. 09, 2020 CAD ($)	Mar. 19, 2020 USD ($)	Feb. 15, 2026	Feb. 15, 2025	Feb. 15, 2024	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Jul. 09, 2020 USD ($) Contract	Jul. 09, 2020 CAD ($) Contract	Feb. 19, 2020 USD ($)
Proceeds from issuance of long-term debt								$ 239,000	$ 25,000	$ 0
Finance lease liability								26,815	20,900
Finance lease liability, current								9,800	9,500
Finance lease liability, noncurrent								17,000	11,400
Finance lease right-of-use asset								20,300	23,100
Finance lease right-of-use asset, amortization								12,600	7,100	8,900
Finance lease, interest expense								900	$ 900	$ 600
Finance lease, liability, payment, due								29,792
Finance lease, liability, undiscounted excess amount								$ 2,977
Finance lease, weighted average remaining lease term (year)								2 years 2 months 12 days	1 year 10 months 24 days
Finance lease, weighted average discount rate, percent								9.90%	6.50%
Finance lease, liability, statement of financial position [Extensible Enumeration]								Liabilities	Finance lease liability	Finance lease liability
Finance lease, right-of-use asset, statement of financial position [Extensible Enumeration]								Properties, plants, equipment and mineral interests, net	Properties, plants, equipment and mineral interests, net
Operating lease liability								$ 8,634	$ 11,100
Operating lease liability, current								800	2,500
Operating lease liability, noncurrent								7,800	8,600
Operating lease right-of-use asset								8,349	11,064
Operating lease expense								$ 3,100	$ 3,100	$ 3,900
Operating lease, weighted average remaining lease term (year)								9 years 9 months 18 days	8 years 10 months 24 days
Operating lease, weighted average discount rate, percent								6.50%	6%
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]								Liabilities, Current
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]								Liabilities, Current	Liabilities, Current
Operating lease, liability, statement of financial position [Extensible Enumeration]								Operating lease liability	Operating lease liability	Operating lease liability
New Credit Agreement [Member]
Line of credit facility, maximum borrowing capacity								$ 15,100
Long-term line of credit								6,900	$ 7,800
Proceeds from lines of credit								128,000
New Credit Agreement [Member] | Revolving Credit Facility [Member]
Interest expense debt								$ 600
Line of credit facility, maximum borrowing capacity		$ 150,000
Line of credit facility, maximum borrowing capacity, option		$ 75,000
New Credit Agreement [Member] | Revolving Credit Facility [Member] | Minimum [Member]
Line of credit facility, commitment fee percentage		0.45%
New Credit Agreement [Member] | Revolving Credit Facility [Member] | Maximum [Member]
Line of credit facility, commitment fee percentage		0.7875%
New Credit Agreement [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Revolving Credit Facility [Member] | Minimum [Member]
Debt instrument, basis spread on variable rate								2%
New Credit Agreement [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Revolving Credit Facility [Member] | Maximum [Member]
Debt instrument, basis spread on variable rate								3.50%
New Credit Agreement [Member] | Base Rate [Member] | Revolving Credit Facility [Member] | Minimum [Member]
Debt instrument, basis spread on variable rate								1%
Debt instrument, basis spread on variable rate, applicable margin		1%
New Credit Agreement [Member] | Base Rate [Member] | Revolving Credit Facility [Member] | Maximum [Member]
Debt instrument, basis spread on variable rate								2.50%
New Credit Agreement [Member] | Fed Funds Effective Rate Overnight Index Swap Rate [Member] | Revolving Credit Facility [Member]
Debt instrument, basis spread on variable rate								0.50%
New Credit Agreement [Member] | Leverage Ratio Applicable Margin [Member] | Revolving Credit Facility [Member] | Minimum [Member]
Debt instrument, participation fee, percent		2%
New Credit Agreement [Member] | Leverage Ratio Applicable Margin [Member] | Revolving Credit Facility [Member] | Maximum [Member]
Debt instrument, participation fee, percent		3.50%
Senior Notes [Member] | The 2028 Senior Notes [Member]
Debt instrument, interest rate, stated percentage								7.25%	7.25%				7.25%
Debt instrument, face amount													$ 475,000
Underwriting discount on senior notes													1.16%
Debt instrument, unamortized discount													$ 5,500
Debt instrument, redemption price, percentage						103.625%	105.438%
Debt instrument, redemption price, percentage, net of cash proceeds of equity offerings										35%
Debt instrument, redemption price, percentage, including accrued and unpaid interest										101%
Senior Notes [Member] | The 2028 Senior Notes [Member] | Forecast [Member]
Debt instrument, redemption price, percentage	100%				101.813%
Senior Notes [Member] | The 2021 Senior Notes [Member]
Proceeds from issuance of long-term debt				$ 469,500
Previously outstanding				6.875%
Interest expense debt								$ 34,400	$ 35,400	$ 35,400
Senior Notes [Member] | IQ Notes [Member]
Debt instrument, interest rate, stated percentage								7.25%	7.25%		6.515%	6.515%
Debt instrument, face amount											$ 36,800	$ 50
Interest expense debt								$ 2,300	$ 2,300	$ 2,300
Debt instrument, unamortized premium, percentage of principal											103.65%	103.65%
Debt instrument, unamortized premium												$ 1.8
Debt instrument, effective annual yield											5.74%	5.74%
Debt instrument, number of issuance installments | Contract											4	4
Proceeds from issuance of debt			$ 12.5
Payments of debt issuance costs			$ 0.6
Debt instrument, covenant, investment over next four years												$ 100

Note 9 - Debt, Credit Facilit_4

Note 9 - Debt, Credit Facility and Leases - Debt Summary (Details) - Senior Notes [Member] - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Principal	$ 511,473	$ 510,614
Unamortized discount/premium and issuance costs	(3,473)	(4,248)
Long-term debt balance	508,000	506,366
The 2028 Senior Notes [Member]
Debt Instrument [Line Items]
Principal	475,000	475,000
Unamortized discount/premium and issuance costs	(3,730)	(4,640)
Long-term debt balance	471,270	470,360
IQ Notes [Member]
Debt Instrument [Line Items]
Principal	36,473	35,614
Unamortized discount/premium and issuance costs	257	392
Long-term debt balance	$ 36,730	$ 36,006

Note 9 - Debt, Credit Facilit_5

Note 9 - Debt, Credit Facility and Leases - Future Payments of Long-term Debt (Details) - Senior Notes [Member] $ in Thousands	Dec. 31, 2023 USD ($)
The 2028 Senior Notes [Member]
2024	$ 34,438
2025	34,438
2026	34,438
2027	34,438
2028	479,303
2029	0
Total	617,055
IQ Notes [Member]
2024	2,376
2025	37,704
2026	0
2027	0
2028	0
2029	0
Total	$ 40,080

Note 9 - Debt, Credit Facilit_6

Note 9 - Debt, Credit Facility and Leases - Maturities of Finance Lease (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Line of Credit Facility [Abstract]
2024, finance lease	$ 11,172
2025, finance lease	7,744
2026, finance lease	5,757
2027, finance lease	5,119
2028, finance lease	0
Total, finance lease	29,792
Less: effect of interest, finance lease	$ (2,977)
Finance lease, liability, statement of financial position [Extensible Enumeration]	Liabilities	Net finance lease obligation	Net finance lease obligation
Net finance lease obligation	$ 26,815	$ 20,900

Note 9 - Debt, Credit Facilit_7

Note 9 - Debt, Credit Facility and Leases - Maturities of Operating Lease (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Line of Credit Facility [Abstract]
2024, operating lease	$ 1,290
2025, operating lease	1,278
2026, operating lease	1,278
2027, operating lease	1,171
2028, operating lease	1,033
More than 5 years, operating lease	5,566
Total, operating lease	11,616
Less: Effect of discounting, operating lease	$ (2,982)
Operating lease, liability, statement of financial position [Extensible Enumeration]	Operating lease liability	Operating lease liability	Operating lease liability
Operating lease liability	$ 8,634	$ 11,100

Note 10 - Derivative Instrume_3

Note 10 - Derivative Instruments (Details Textual) $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2023 CAD ($) Contract	Dec. 31, 2023 USD ($) Contract
Maximum Allocation of Forecasted CAD-demonimated Operating Costs				75%	75%
Forecasted CAD-denominated Operating Costs to be Hedged, Term (Year)	5 years
Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	$ 3,600
Gain (Loss) on Components Excluded from Assessment of Foreign Currency Cash Flow Hedge Effectiveness	0
Price Risk Cash Flow Hedge Unrealized Gain (Loss) to be Reclassified During Next 12 Months					$ 12,600
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]			Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent
Derivative, Gain, Statement of Income or Comprehensive Income [Extensible Enumeration]		Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent
Other Comprehensive Income (Loss) [Member]
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months					200
Price Risk Derivative [Member]
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax					14,600
Foreign Exchange Forward [Member]
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax					$ 1,300
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member]
Unrealized Gain (Loss) on Derivatives	1,200
Foreign Exchange Forward [Member] | Casa Berardi [Member]
Derivative, Notional Amount				$ 42.8
Derivative, Forward Exchange Rate				0.01353	0.01353
Foreign Exchange Forward [Member] | Casa Berardi [Member] | Minimum [Member]
Derivative, Forward Exchange Rate				0.012767	0.012767
Foreign Exchange Forward [Member] | Casa Berardi [Member] | Maximum [Member]
Derivative, Forward Exchange Rate				0.013692	0.013692
Foreign Exchange Forward [Member] | Casa Berardi [Member] | Designated as Hedging Instrument [Member]
Derivative, Number of Instruments Held, Total | Contract				576	576
Derivative, Notional Amount				$ 422.1
Foreign Exchange Forward [Member] | Casa Berardi and Keno Hill [Member]
Derivative, Notional Amount				355.4
Foreign Exchange Forward [Member] | Casa Berardi and Keno Hill [Member] | Designated as Hedging Instrument [Member]
Derivative, Notional Amount					$ 332,300
Foreign Exchange Forward [Member] | Keno Hill [Member]
Derivative, Notional Amount				$ 22.9
Derivative, Forward Exchange Rate				0.01354	0.01354
Unsettled Concentrate Sales Contracts [Member]
Derivative, Gain (Loss) on Derivative, Net, Total	19,700
Price Risk Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	20,600
Forecasted Future Concentrate Contracts [Member]
Derivative, Gain (Loss) on Derivative, Net, Total			$ (32,900)
Zinc Contract 2022 [Member] | Other Comprehensive Income (Loss) [Member]
Derivative, Gain (Loss) on Derivative, Net, Total	$ 8,500	$ 17,400
Commodity Contract [Member]
Derivative Liability, Fair Value, Amount Not Offset Against Collateral, Total					$ 1,600
Derivative, Fair Value, Obligations Under the Agreements					$ 1,600

Note 10 - Derivative Instrume_4

Note 10 - Derivative Instruments - Foreign Currency (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Derivative [Line Items]
Current derivative liabilities	$ (1,144)	$ (16,125)
Non-current derivatitive liabilities	364	6,066
Foreign Exchange Contract [Member]
Derivative [Line Items]
Other current assets	$ 2,700	$ 1,100
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration]	Other Assets, Current	Other Assets, Current
Other non-current assets	$ 2,000	$ 400
Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other Assets, Noncurrent	Other Assets, Noncurrent
Current derivative liabilities	$ (1,100)	$ (4,000)
Non-current derivatitive liabilities	$ (400)	$ (3,600)

Note 10 - Derivative Instrume_5

Note 10 - Derivative Instruments - Summary of Forward Sales Contracts (Details) oz in Thousands, lb in Thousands	12 Months Ended
	Dec. 31, 2023 lb oz $ / USN $ / oz	Dec. 31, 2022 lb oz $ / USN $ / oz
Silver 2022 Settlements for Provisional Sales [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount, Mass | oz		3,124
Underlying, Derivative Mass | $ / oz		21.55
Silver 2023 Settlements For Provisional Sales [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount, Mass | oz	735
Underlying, Derivative Mass | $ / oz	24.4
Gold 2022 Settlements for Provisional Sales [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount, Mass | oz		8
Underlying, Derivative Mass | $ / oz		1,795
Gold 2023 Settlements For Provisional Sales [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount, Mass | oz	3
Underlying, Derivative Mass | $ / oz	2,045
Zinc 2022 Settlements for Provisional Sales [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount, Mass | lb		18,629
Underlying, Derivative Mass | $ / USN		1.38
Lead 2022 Settlements for Provisional Sales [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount, Mass | lb		11,960
Underlying, Derivative Mass | $ / USN		0.98
Zinc 2022 Settlements for Forecasted Sales [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount, Mass | lb		37,533
Underlying, Derivative Mass | $ / USN		1.34
Lead 2022 Settlements for Forecasted Sales [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount, Mass | lb		75,618
Underlying, Derivative Mass | $ / USN		1
Zinc 2023 Settlements for Provisional Sales [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount, Mass | lb	441
Underlying, Derivative Mass | $ / USN	1.51
Lead 2023 Settlements for Forecasted Sales [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount, Mass | lb	49,273	45,856
Underlying, Derivative Mass | $ / USN	0.98	0.99
Lead 2023 Settlements for Provisional Sales[Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount, Mass | lb	15,542
Underlying, Derivative Mass | $ / USN	1
Lead 2024 Settlements for Forecasted Sales [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount, Mass | lb	56,713
Underlying, Derivative Mass | $ / USN	0.98

Note 10 - Derivative Instrume_6

Note 10 - Derivative Instruments - Fair Value of Forward and Put Option Contracts (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Contracts in a liability position	$ 1,144	$ 16,125
Forward and Put Option Contracts [Member]
Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other Assets, Noncurrent	Other Assets, Noncurrent
Forward and Put Option Contracts [Member] | Other Current Assets [Member]
Contracts in an asset position	$ 3,100	$ 1,200
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration]	Other Assets, Current	Other Assets, Current
Contracts in a liability position	$ 0	$ 0
Net asset (liability)	3,100	1,200
Forward and Put Option Contracts [Member] | Other Noncurrent Assets [Member]
Contracts in an asset position	1,500	100
Contracts in a liability position	0	0
Net asset (liability)	1,500	100
Forward and Put Option Contracts [Member] | Current derivatives liability [Member]
Contracts in an asset position	0	0
Contracts in a liability position	(100)	(12,100)
Net asset (liability)	$ (100)	$ (12,100)
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration]	Contracts in a liability position	Contracts in a liability position
Forward and Put Option Contracts [Member] | Other Noncurrent Liabilities [Member]
Contracts in an asset position	$ 0	$ 0
Contracts in a liability position	0	(2,500)
Net asset (liability)	$ 0	$ (2,500)
Derivative Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Derivative Liability, Noncurrent	Derivative Liability, Noncurrent

Note 11 - Fair Value Measurem_2

Note 11 - Fair Value Measurement (Details Textual)	Dec. 31, 2023 USD ($)
Fair Value, Inputs, Level 1 [Member]
Carrying and fair value	$ 128,000,000
IQ Notes [Member]
Notes Payable, Total	36,600,000
IQ Notes [Member] | Fair Value, Inputs, Level 1 [Member]
Notes Payable, Fair Value Disclosure	$ 37,200,000
IQ Notes [Member] | Fair Value, Inputs, Level 3 [Member] | Measurement Input, Annual Yield [Member]
Debt Instrument, Measurement Input	0.0663
Senior Notes [Member]
Notes Payable, Total	$ 478,700,000
Senior Notes [Member] | Fair Value, Inputs, Level 1 [Member]
Notes Payable, Fair Value Disclosure	$ 481,600,000

Note 11 - Fair Value Measurem_3

Note 11 - Fair Value Measurement - Details of Fair Value Adjustment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Asset (Liability), Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent	Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent	Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent
Fair Value, Asset (Liability), Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Operating Income (Expense), Net	Other Operating Income (Expense), Net	Other Operating Income (Expense), Net
Total fair value adjustments, net	$ 2,925	$ (4,723)	$ (35,792)
Fair Value, Inputs, Level 1 [Member]
Unrealized (loss) on investments in equity securities	(243)	(5,632)	(4,295)
Derivative [Member] | Fair Value, Inputs, Level 3 [Member]
Gain (loss) on derivative contracts	3,168	844	(32,655)
Gain on disposition or exchange of investments	3,168	844	(32,655)
Securities Investment [Member] | Fair Value, Inputs, Level 1 [Member]
Gain (loss) on derivative contracts	0	65	1,158
Gain on disposition or exchange of investments	$ 0	$ 65	$ 1,158

Note 11 - Fair Value Measurem_4

Note 11 - Fair Value Measurement - Assets and Liabilities Accounted for at Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Other, net	$ 18,376	$ 10,695
Fair Value, Recurring [Member]
Total assets	163,918	177,898
Total liabilities	1,548	22,191
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member]
Money market funds and other bank deposits	106,374	104,743
Equity securities – mining industry	32,284	24,018
Certificates of deposit and other deposits	1,165	1,164
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member]
Other, net	14,740	45,146
Metal forward contracts	4,698	$ 1,309
Derivative Asset, Statement of Financial Position [Extensible Enumeration]		Assets
Foreign exchange contracts	4,657	$ 1,518
Metal forward contracts	$ 40	$ 14,643
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Liabilities	Liabilities
Foreign exchange contracts	$ 1,508	$ 7,548

Note 12 - Stockholders' Equit_2

Note 12 - Stockholders' Equity (Details Textual)		1 Months Ended				3 Months Ended	12 Months Ended					16 Months Ended
	Jul. 20, 2018 shares	Dec. 31, 2023 USD ($) $ / shares shares	Apr. 30, 2023 USD ($) shares	Mar. 31, 2023 USD ($) shares	Sep. 30, 2021 $ / shares	Dec. 31, 2020 $ / shares	Dec. 31, 2023 USD ($) $ / shares shares	Dec. 31, 2022 USD ($) Director $ / shares shares	Dec. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2020 $ / shares	Dec. 31, 2019 $ / shares	Dec. 31, 2023 USD ($) $ / shares shares	Feb. 15, 2022 $ / shares	Feb. 18, 2021 shares	Sep. 30, 2020 $ / shares	May 08, 2012 shares	Jun. 30, 2010 shares
Average Realized Silver Price, Minimum Dividend, Threshold (in dollars per share) | $ / shares											$ 30				$ 25
Average Realized Silver Price Per Ounce (in dollars per share) | $ / shares					$ 20					$ 25
Share Price (in dollars per share) | $ / shares													$ 0
Series B preferred stock, shares outstanding (in shares)		157,776					157,776	157,776				157,776
Percent of Shareholders' Consent Needed to Create or Issue Stock Ranking Senior to Series B Preferred Stock		66%					66%					66%
Preferred stock, dividends declared (Quarterly) | $							$ 552,000	$ 552,000	$ 552,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total | $		$ 4,200,000					$ 4,200,000					$ 4,200,000
Share-based Compensation Arrangement by Share-based Payment Award, Measurement Period Used to Value Performance-based Awards (Year)							3 years
Conversion of Stock, Shares Converted							40	40
Conversion of Stock, Shares Issued							128	128
Unrecognized Tax Benefits, Interest on Income Taxes Expense | $							$ 5,200,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition							1 year 3 months 18 days
Warrants in Connection with Klondex Mines Acquisition [Member]
Class of Warrant or Right, Issued During Period (in shares)	4,136,000
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)	1
Satisfy Withholding Obligations [Member]
Treasury Stock Acquired, Average Cost Per Share (in dollars per share) | $ / shares							$ 5.03	$ 4.99	$ 7.88
Stock Repurchased During Period, Shares (in shares)							404,514	737,258	574,251
Stock Repurchased During Period, Value | $							$ 2,000,000	$ 3,700,000	$ 4,500,000
2010 Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)																	20,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)		12,756,250					12,756,250					12,756,250					20,000,000
Directors Stock Plan [Member]
Number of distributed shares								388,175
Number of directors | Director								2
Share-based Payment Arrangement, Expense | $							$ 700,000	$ 400,000	$ 1,800,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)		2,165,894					2,165,894					2,165,894
Share-Based Compensation Arrangement by Share-Based Payment Award, Method of Measuring Cost of Award Participant, Numerator | $							$ 120,000
Shares Issued, Shares, Share-based Payment Arrangement, before Forfeiture (in shares)							125,063	98,310	207,375
Share-Based Payment Arrangement [Member]
Share-based Payment Arrangement, Expense | $							$ 6,600,000	$ 6,000,000	$ 6,100,000
Performance Shares [Member]
Unrecognized Tax Benefits, Interest on Income Taxes Expense | $							$ 1,000,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition							1 year 6 months
Series B Preferred Stock [Member]
Series B preferred stock, shares outstanding (in shares)		157,776					157,776	157,776				157,776
Preferred Stock, Dividend Rate, Per-Dollar-Amount (in dollars per share) | $ / shares							$ 3.5
Preferred stock, dividends declared (Quarterly) | $							$ 552,000	$ 552,000	552,000
Preferred Stock, Redemption Price Per Share (in dollars per share) | $ / shares		$ 50					$ 50					$ 50
Preferred Stock, Liquidation Preference Per Share (in dollars per share) | $ / shares								$ 50
Series B preferred stock, liquidation preference | $		$ 7,889,000					$ 7,889,000	$ 7,889,000				$ 7,889,000
Preferred Stock Conversion Price (in dollars per share) | $ / shares		$ 15.55					$ 15.55					$ 15.55
Common Stock Repurchase Program [Member]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased (in shares)																20,000,000
Cumulative Stock Repurchased (in shares)		934,100					934,100					934,100
Treasury Stock Acquired, Average Cost Per Share (in dollars per share) | $ / shares							$ 3.99
At-the-market Offering [Member]
Equity Distribution Agreement, Maximum Number of Shares to be Sold (in shares)		10,645,198	10,645,198	10,645,198			10,645,198					10,645,198		60
Proceeds from sale of shares | $		$ 56,700,000	$ 56,700,000	$ 56,700,000			$ 56,700,000					$ 56,700,000
Fees and commission on sale of shares | $		$ 900,000	$ 900,000	$ 900,000
At-the-market Offering [Member] | September 2022 through December 31, 2023 [Member]
Equity Distribution Agreement, Maximum Number of Shares to be Sold (in shares)		14,505,397					14,505,397					14,505,397
Proceeds from sale of shares | $		$ 74,000,000					$ 74,000,000					$ 74,000,000
Fees and commission on sale of shares | $												$ 1,200,000
Quarterly Dividends [Member]
Dividends, Common Stock, Total | $							$ 15,200,000	$ 12,400,000	$ 20,100,000
Minimum [Member]
Common Stock, Dividends, Per Share, Declared (in dollars per share) | $ / shares								$ 0.01			$ 0.01
Maximum [Member]
Common Stock, Dividends, Per Share, Declared (in dollars per share) | $ / shares						$ 0.015

Note 12 - Stockholders' Equit_3

Note 12 - Stockholders' Equity - Common Stock Dividend Policy (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) $ / shares
Quarterly Average Realized Price, Level 1 [Member]
Quarterly average realized price | $	$ 20
Quarterly dividend per share (in dollars per share)	$ 0
Annual dividend per share (in dollars per share)	0
Minimum annual component per share (in dollars per share)	0.015
Annualized dividends (in dollars per share)	$ 0.015
Quarterly Average Realized Price, Level 2 [Member]
Quarterly average realized price | $	$ 20
Quarterly dividend per share (in dollars per share)	$ 0.0025
Annual dividend per share (in dollars per share)	0.01
Minimum annual component per share (in dollars per share)	0.015
Annualized dividends (in dollars per share)	$ 0.025
Quarterly Average Realized Price, Level 3 [Member]
Quarterly average realized price | $	$ 25
Quarterly dividend per share (in dollars per share)	$ 0.01
Annual dividend per share (in dollars per share)	0.04
Minimum annual component per share (in dollars per share)	0.015
Annualized dividends (in dollars per share)	$ 0.055
Quarterly Average Realized Price, Level 4 [Member]
Quarterly average realized price | $	$ 30
Quarterly dividend per share (in dollars per share)	$ 0.015
Annual dividend per share (in dollars per share)	0.06
Minimum annual component per share (in dollars per share)	0.015
Annualized dividends (in dollars per share)	$ 0.075
Quarterly Average Realized Price, Level 5 [Member]
Quarterly average realized price | $	$ 35
Quarterly dividend per share (in dollars per share)	$ 0.025
Annual dividend per share (in dollars per share)	0.1
Minimum annual component per share (in dollars per share)	0.015
Annualized dividends (in dollars per share)	$ 0.115
Quarterly Average Realized Price, Level 6 [Member]
Quarterly average realized price | $	$ 40
Quarterly dividend per share (in dollars per share)	$ 0.035
Annual dividend per share (in dollars per share)	0.14
Minimum annual component per share (in dollars per share)	0.015
Annualized dividends (in dollars per share)	$ 0.155
Quarterly Average Realized Price, Level 7 [Member]
Quarterly average realized price | $	$ 45
Quarterly dividend per share (in dollars per share)	$ 0.045
Annual dividend per share (in dollars per share)	0.18
Minimum annual component per share (in dollars per share)	0.015
Annualized dividends (in dollars per share)	$ 0.195
Quarterly Average Realized Price Level 8 [Member]
Quarterly average realized price | $	$ 50
Quarterly dividend per share (in dollars per share)	$ 0.055
Annual dividend per share (in dollars per share)	0.22
Minimum annual component per share (in dollars per share)	0.015
Annualized dividends (in dollars per share)	$ 0.235

Note 12 - Stockholders' Equit_4

Note 12 - Stockholders' Equity - Unvested Restricted Stock (Details) - Restricted Stock Units (RSUs) [Member] - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Unvested, shares (in shares)	1,796,115	2,022,352	3,936,134
Unvested, weighted average fair value per share (in dollars per share)	$ 4.23	$ 3.97	$ 2.55
Granted, shares (in shares)	1,316,120	1,256,532	629,437
Granted (unvested), weighted average fair value per share (in dollars per share)	$ 5.05	$ 4.41	$ 7.88
Canceled, shares (in shares)	(336,060)	(177,801)	(770,416)
Canceled, weighted average fair value per share (in dollars per share)	$ 4.9	$ 4.41	$ 2.82
Vested	(918,927)	(1,304,968)	(1,772,803)
Distributed (vested), weighted average fair value per share (in dollars per share)	$ 5.05	$ 3.97	$ 2.6
Unvested, shares (in shares)	1,857,248	1,796,115	2,022,352
Unvested, weighted average fair value per share (in dollars per share)	$ 4.28	$ 4.23	$ 3.97

Note 12 - Stockholders' Equit_5

Note 12 - Stockholders' Equity - Unvested Performance-based Shares (Details) - Performance Shares [Member] - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Unvested, shares (in shares)	599,858	874,422	1,813,895
Unvested, weighted average fair value per share (in dollars per share)	$ 5.54	$ 2.61	$ 0.41
Granted, shares (in shares)	336,096	322,796	122,462
Granted (unvested), weighted average fair value per share (in dollars per share)	$ 3.54	$ 3.78	$ 13.7
Canceled, shares (in shares)	(109,727)		(174,108)
Canceled, weighted average fair value per share (in dollars per share)	$ 5.3		$ 0.76
Vested	(205,425)	(597,360)	(887,827)
Distributed (vested), weighted average fair value per share (in dollars per share)	$ 8.17	$ 0.31	$ 0
Unvested, shares (in shares)	620,802	599,858	874,422
Unvested, weighted average fair value per share (in dollars per share)	$ 3.63	$ 5.54	$ 2.61

Note 12 - Stockholders' Equit_6

Note 12 - Stockholders' Equity - Details of Warrants Outstanding (Details)	Dec. 31, 2023 $ / shares shares
Warrant Expiring in February 2029 [Member]
Number of warrants (in shares) | shares	2,068,000
Exercise price (in dollars per share) | $ / shares	$ 1.57
Warrants Expiring in April 2032 [Member]
Number of warrants (in shares) | shares	2,068,000
Exercise price (in dollars per share) | $ / shares	$ 8.02

Note 13- Accumulated Other Comp

Note 13- Accumulated Other Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Balance	$ 1,978,967	$ 1,760,787	$ 1,713,785
Other comprehensive income	3,389	30,904	4,433
Balance	1,968,104	1,978,967	1,760,787
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Balance	9,162	(4,675)	7,632
Other comprehensive income	4,546	13,837	(12,307)
Balance	13,708	9,162	(4,675)
Balance, beginning	(544)	4,689	0
Change , tax	(1,683)	(5,233)	4,689
Balance, ending	(2,227)	(544)	4,689
Accumulated Defined Benefit Plans Adjustment, Net Transition Attributable to Parent [Member]
Balance	(6,714)	(23,781)	(40,521)
Other comprehensive income	(1,157)	17,067	16,740
Balance	(7,871)	(6,714)	(23,781)
Balance, beginning	(258)	6,196	12,575
Change , tax	428	(6,454)	(6,379)
Balance, ending	170	(258)	6,196
AOCI Attributable to Parent [Member]
Balance	2,448	(28,456)	(32,889)
Other comprehensive income	3,389	30,904	4,433
Balance	5,837	2,448	(28,456)
Balance, beginning	(802)	10,885	12,575
Change , tax	(1,255)	(11,687)	(1,690)
Balance, ending	$ (2,057)	$ (802)	$ 10,885

Note 14 - Product Inventories -

Note 14 - Product Inventories - Schedule of Our Major Components of Product Inventories (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Inventory [Line Items]
Product inventories	$ 28,823	$ 37,303
Concentrates
Inventory [Line Items]
Product inventories	13,328	21,513
Stockpiled ore
Inventory [Line Items]
Product inventories	7,168	6,869
In-process
Inventory [Line Items]
Product inventories	$ 8,327	$ 8,921

Note 15 - Properties, Plants,_3

Note 15 - Properties, Plants, Equipment and Mineral Interests, and Lease Commitments - Major Components of Property, Plants, Equipment and Mineral Interests (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment, Gross	$ 4,528,510	$ 4,315,736
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	1,862,260	1,745,946
Net carrying value	2,666,250	2,569,790
Mining properties, including asset retirement obligations
Property, Plant and Equipment, Gross	911,018	871,027
Development costs
Property, Plant and Equipment, Gross	630,391	588,298
Plants and equipment
Property, Plant and Equipment, Gross	1,666,577	1,514,906
Land
Property, Plant and Equipment, Gross	35,112	35,644
Mineral interests
Property, Plant and Equipment, Gross	1,164,390	1,171,261
Construction in progress
Property, Plant and Equipment, Gross	$ 121,022	$ 134,600

Note 15 - Properties, Plants,_4

Note 15 - Properties, Plants, Equipment and Mineral Interests, and Lease Commitments (Details textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Capital additions (excluding non-cash items)	$ 223,887	$ 149,378	$ 109,048
Finance Lease, Right-of-Use Asset, before Accumulated Amortization	106,900	90,800
Finance Lease, Right-of-Use Asset, Accumulated Amortization	86,500	67,700
Lucky Friday [Member]
Capital additions (excluding non-cash items)	65,300
Greens Creek [Member]
Capital additions (excluding non-cash items)	43,500
Mining Assets, Value Beyond Proven and Probable Reserves (VBPP)	86,300	93,800
Casa Berardi [Member]
Capital additions (excluding non-cash items)	70,100
Mining Assets, Value Beyond Proven and Probable Reserves (VBPP)	323,600	323,600
Nevada Operations [Member]
Mining Assets, Value Beyond Proven and Probable Reserves (VBPP)	383,600	383,600
Keno Hill [Member]
Capital additions (excluding non-cash items)	44,700
Mining Assets, Value Beyond Proven and Probable Reserves (VBPP)	$ 102,100	$ 102,100

Note 15 - Commitments, Continge

Note 15 - Commitments, Contingencies, and Obligations (Details Textual) - USD ($) $ in Thousands			1 Months Ended			12 Months Ended
	Dec. 14, 2023	Jul. 12, 2022	Jul. 31, 2018	Aug. 31, 2012	Jun. 30, 2011	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Environmental remediation expense						$ 7,575	$ 8,793	$ 14,571
Lessee, operating lease, liability, to be paid						11,616
Lease Commitments [Member]
Lessee, operating lease, liability, to be paid						11,600
Performance Obligation Commitments [Member]
Surety bonds						195,400
Letters of credit outstanding, amount						6,900
Greens Creek [Member]
Contractual obligation						29,800
Greens Creek [Member] | Purchase Orders and Commitment [Member]
Contractual obligation						11,400
Lucky Friday [Member]
EPA maximum for statutory penalties, per day/violation		$ 59,973
EPA maximum for administrative penalties, per day/violation		23,989
EPA maximum for administrative penalties		$ 299,989
Lucky Friday [Member] | Purchase Orders and Commitment [Member]
Contractual obligation						8,100
Keno Hill [Member]
Maximum offense charges/fine	$ 100,000
Keno Hill [Member] | Purchase Orders and Commitment [Member]
Contractual obligation						10,700
Casa Berardi [Member] | Purchase Orders and Commitment [Member]
Contractual obligation						2,800
Nevada Operations [Member] | Purchase Orders and Commitment [Member]
Contractual obligation						3,500
Johnny M Mine Area near San Mateo, New Mexico [Member]
Payment of response costs				$ 1,100
Estimated response costs			$ 9,600
Environmental remediation expense				10,100
Johnny M Mine Area near San Mateo, New Mexico [Member] | Environmental Remediation Past Response Costs [Member]
Accrual for environmental loss contingencies, period increase (decrease)				$ 10,100		$ 10,100
Carpenter Snow Creek Superfund Site, Cascade County, Montana [Member]
Estimated response costs					$ 4,500
Estimated future response cost					$ 100,000

Note 16 - Subsequent Events (De

Note 16 - Subsequent Events (Details Textual) - USD ($) $ / shares in Units, $ in Millions	Feb. 13, 2024	Dec. 31, 2023	Dec. 31, 2022
Proceeds from insurance coverage claim	$ 5.4
Common Stock, Par or Stated Value Per Share		$ 0.25	$ 0.25
Common Stock [Member] | Cash Dividend
Common Stock, Par or Stated Value Per Share	$ 0.00625
Common Stock [Member] | Cash Dividend | Maximum [Member]
Common Stock, Par or Stated Value Per Share	0.00375
Common Stock [Member] | Cash Dividend | Minimum [Member]
Common Stock, Par or Stated Value Per Share	$ 0.0025