Hecla Mining (HL) 10-Q 5 Nov 21 2021 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2021	Nov. 02, 2021
Document Information [Line Items]
Entity Central Index Key	0000719413
Entity Registrant Name	HECLA MINING CO/DE/
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2021
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2021
Document Transition Report	false
Entity File Number	1-8491
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	77-0664171
Entity Address, Address Line One	6500 Mineral Drive, 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 Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		538,139,465
Series B Cumulative 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
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

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Sales of products	$ 193,560	$ 199,703	$ 622,395	$ 502,983
Cost of sales and other direct production costs	112,542	103,025	318,917	280,303
Depreciation, depletion and amortization	45,790	37,990	138,918	112,492
Total cost of sales	158,332	141,015	457,835	392,795
Gross profit	35,228	58,688	164,560	110,188
Other operating expenses:
General and administrative	8,874	11,713	27,985	27,631
Exploration	13,675	3,407	27,993	7,899
Pre-development	3,433	759	7,046	1,857
Other operating expense	3,344	3,499	10,626	5,864
Provision for closed operations and environmental matters	7,564	1,254	12,297	2,807
Ramp-up and suspension costs	6,910	1,541	17,014	24,109
Foundation grant	0	0	0	1,970
Total other operating expense	43,800	22,173	102,961	72,137
(Loss) income from operations	(8,572)	36,515	61,599	38,051
Other income (expense):
Gain (loss) on derivative contracts	12,148	(6,666)	(4,692)	(12,775)
Gain on exchange of investments	0	0	1,158	0
Unrealized (loss) gain on investments	(2,861)	3,979	(7,117)	9,410
Foreign exchange gain (loss)	3,995	(2,196)	24	1,235
Other income (expense)	247	(392)	(192)	(2,141)
Interest expense	(10,469)	(10,779)	(31,484)	(38,919)
Total other income (expense)	3,060	(16,054)	(42,303)	(43,190)
(Loss) income before income and mining taxes	(5,512)	20,461	19,296	(5,139)
Income and mining tax benefit (provision)	4,533	(5,181)	3,924	(7,423)
Net (loss) income	(979)	15,280	23,220	(12,562)
Preferred stock dividends	(138)	(138)	(414)	(414)
(Loss) income applicable to common shareholders	(1,117)	15,142	22,806	(12,976)
Comprehensive (loss) income:
Net income (loss)	(979)	15,280	23,220	(12,562)
Change in fair value of derivative contracts designated as hedge transactions	(6,267)	6,150	(2,815)	(2,801)
Comprehensive (loss) income	$ (7,246)	$ 21,430	$ 20,405	$ (15,363)
Basic (loss) income per common share after preferred dividends (in cents) (in dollars per share)	$ (0.002)	$ 0.029	$ 0.043	$ (0.025)
Diluted (loss) income per common share after preferred dividends (in cents) (in dollars per share)	$ (0.002)	$ 0.028	$ 0.042	$ (0.025)
Weighted average number of common shares outstanding - basic (in shares)	536,966	529,838	535,542	526,098
Weighted average number of common shares outstanding - diluted (in shares)	536,966	535,788	541,769	526,098
Cash dividends declared per common share (in cents) (in dollars per share)	$ 0.01125	$ 0.0025	$ 0.03125	$ 0.00750

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Operating activities:
Net income (loss)	$ (979)	$ 21,451	$ 15,280	$ (15,824)	$ 24,199	$ (27,842)	$ 23,220	$ (12,562)	$ (9,457)	$ (94,909)
Non-cash elements included in net income (loss):
Depreciation, depletion and amortization		46,957		39,779	92,861	79,598	139,800	120,076	155,006	196,408
Gain on exchange of investments	0		0				(1,158)	0
Unrealized loss (gain) on investments	2,861		(3,979)				7,117	(9,410)
Write-down to stockpile inventory							6,524	0
Provision for reclamation and closure costs							7,821	4,638
Stock compensation							4,774	5,229
Deferred income taxes							(17,886)	(4,578)
Amortization of loan origination fees							1,406	3,066
(Gain) loss on derivative contracts							(13,937)	4,483
Foreign exchange loss (gain)							615	(2,810)
Foundation grant	0		0				0	1,970
Other non-cash items, net							(239)	559
Change in assets and liabilities, net of business acquisitions:
Accounts receivable							(3,798)	(3,741)
Inventories							22,372	(13,090)
Other current and non-current assets							1,650	6,748
Accounts payable and accrued liabilities							(14,689)	(1,762)
Accrued payroll and related benefits							(1,829)	11,317
Accrued taxes							2,730	3,276
Accrued reclamation and closure costs and other non-current liabilities							2,489	2,483
Cash provided by operating activities		37,936		4,927	124,240	42,453	166,982	115,892	180,793	120,866
Investing activities:
Additions to properties, plants, equipment and mineral interests							(80,210)	(54,382)
Purchase of carbon credits							(200)	0
Proceeds from exchange of investments							1,811	0
Proceeds from disposition of properties, plants, equipment and mineral interests							562	305
Purchases of investments							0	(1,661)
Net cash used in investing activities							78,037	55,738
Financing activities:
Acquisition of treasury shares							(4,525)	(2,745)
Dividends paid to common shareholders							(16,755)	(3,951)
Dividends paid to preferred shareholders							(414)	(414)
Credit facility and debt issuance fees							(108)	(1,287)
Borrowings on debt							0	707,107
Repayments of debt							0	(716,500)
Repayments of finance leases							(5,598)	(4,246)
Net cash used in financing activities							(27,400)	(22,036)
Effect of exchange rates on cash							(471)	(1,873)
Net increase in cash, cash equivalents and restricted cash and cash equivalents							61,074	36,245
Cash, cash equivalents and restricted cash and cash equivalents at beginning of period		$ 130,883		$ 63,477	$ 130,883	$ 63,477	130,883	63,477	63,477
Cash, cash equivalents and restricted cash and cash equivalents at end of period	$ 191,957		$ 99,722				191,957	99,722	$ 130,883	$ 63,477
Supplemental disclosure of cash flow information:
Cash paid for interest							37,173	33,828
Cash paid (received) for income and mining taxes							10,299	(2,608)
Significant non-cash investing and financing activities:
Addition of finance lease obligations							4,006	5,747
Payment of accrued compensation in stock							$ 0	$ 5,095

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 190,904	$ 129,830
Accounts receivable:
Trade	32,821	27,864
Other, net	10,152	11,329
Inventories:
Concentrates, doré, and stockpiled ore	17,594	57,567
Materials and supplies	40,845	38,608
Derivative assets	5,220	3,470
Other current assets	12,744	15,644
Total current assets	310,280	284,312
Investments	8,030	15,148
Restricted cash	1,053	1,053
Properties, plants, equipment and mineral interests, net	2,331,018	2,378,074
Operating lease right-of-use assets	8,201	10,628
Deferred income taxes	5,576	2,912
Non-current derivatives assets	6,748	4,558
Other non-current assets and deferred charges	3,511	3,525
Total assets	2,674,417	2,700,210
Current liabilities:
Accounts payable and accrued liabilities	62,571	68,516
Accrued payroll and related benefits	26,493	31,807
Accrued taxes	8,557	5,774
Finance leases	5,637	6,491
Operating leases	2,385	3,008
Accrued reclamation and closure costs	11,036	5,582
Accrued interest	5,221	14,157
Current derivatives liability	4,179	11,737
Other current liabilities	103	138
Total current liabilities	126,182	147,210
Finance leases	8,540	9,274
Operating leases	5,820	7,634
Accrued reclamation and closure costs	108,670	110,466
Long-term debt	507,712	507,242
Deferred tax liability	142,750	156,091
Pension liability	26,229	44,144
Derivatives liabilities	752	18
Other non-current liabilities	4,787	4,346
Total liabilities	931,442	986,425
Commitments and contingencies (Notes 5, 8, 9, and 11)
Preferred stock, 5,000,000 shares authorized: Series B preferred stock, $0.25 par value, 157,816 shares issued and outstanding, liquidation preference — $7,891	39	39
Common stock, $0.25 par value, 750,000,000 authorized shares; issued September 30, 2021 — 545,371,827 shares and December 31, 2020 — 538,487,415 shares	136,350	134,629
Capital surplus	2,032,334	2,003,576
Accumulated deficit	(362,023)	(368,074)
Accumulated other comprehensive loss	(35,704)	(32,889)
Less treasury stock, at cost; September 30, 2021 — 7,395,295 and December 31, 2020 — 6,821,044 shares issued and held in treasury	(28,021)	(23,496)
Total shareholders’ equity	1,742,975	1,713,785
Total liabilities and shareholders’ equity	$ 2,674,417	$ 2,700,210

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
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)	157,816	157,816
Series B preferred stock, shares outstanding (in shares)	157,816	157,816
Series B preferred stock, liquidation preference	$ 7,891	$ 7,891
Common stock, par value (in dollars per share)	$ 0.25	$ 0.25
Common stock, shares authorized (in shares)	750,000,000	750,000,000
Common stock, shares issued (in shares)	545,371,827	538,487,415
Treasury stock, shares (in shares)	7,395,295	6,821,044

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock [Member]	Total
Balances, July 1, 2021 (Revised) at Dec. 31, 2019	$ 39	$ 132,292	$ 1,973,700	$ (349,220)	$ (37,310)	$ (22,967)	$ 1,696,534
Net income (loss)							(27,842)
Balances at Jun. 30, 2020	39	133,699	1,982,400	(380,205)	(46,261)	(23,496)	1,666,176
Balances, July 1, 2021 (Revised) at Dec. 31, 2019	39	132,292	1,973,700	(349,220)	(37,310)	(22,967)	1,696,534
Net income (loss)	0	0	0	(12,562)	0	0	(12,562)
Restricted stock units granted	0	0	3,746	0	0	0	3,746
Common stock dividends declared	0	0	0	(3,951)	0	0	(3,951)
Series B Preferred Stock dividends declared	0	0	0	(414)	0	0	(414)
Common stock issued for 401(k) match	0	350	3,295	0	0	0	3,645
Common stock issued to pension plans	0	555	12,226	0	0	0	12,781
Other comprehensive income (loss)	0	0	0	0	(2,801)	0	(2,801)
Common stock issued to directors	0	98	1,385	0	0	0	1,483
Restricted stock unit distributions	0	426	(426)	0	0	(1,479)	(1,479)
Common stock issued for employee incentive compensation	0	700	4,396	0	0	(1,266)	3,830
Treasury shares issued to charitable foundation	0	0	0	(246)	0	2,216	1,970
Balances at Sep. 30, 2020	39	134,421	1,998,322	(366,393)	(40,111)	(23,496)	1,702,782
Balances, July 1, 2021 (Revised) at Dec. 31, 2019	39	132,292	1,973,700	(349,220)	(37,310)	(22,967)	1,696,534
Net income (loss)							(9,457)
Balances at Dec. 31, 2020	39	134,629	2,003,576	(368,074)	(32,889)	(23,496)	1,713,785
Balances, July 1, 2021 (Revised) at Jun. 30, 2020	39	133,699	1,982,400	(380,205)	(46,261)	(23,496)	1,666,176
Net income (loss)	0	0	0	15,280	0	0	15,280
Restricted stock units granted	0	0	1,317	0	0	0	1,317
Common stock dividends declared	0	0	0	(1,330)	0	0	(1,330)
Series B Preferred Stock dividends declared	0	0	0	(138)	0	0	(138)
Common stock issued for 401(k) match	0	110	1,303	0	0	0	1,413
Common stock issued to pension plans	0	514	11,917	0	0	0	12,431
Other comprehensive income (loss)	0	0	0	0	6,150	0	6,150
Common stock issued to directors	0	98	1,385	0	0	0	1,483
Balances at Sep. 30, 2020	39	134,421	1,998,322	(366,393)	(40,111)	(23,496)	1,702,782
Balances, July 1, 2021 (Revised) at Dec. 31, 2020	39	134,629	2,003,576	(368,074)	(32,889)	(23,496)	1,713,785
Net income (loss)							24,199
Balances at Jun. 30, 2021	39	136,065	2,024,645	(354,866)	(29,437)	(28,021)	1,748,425
Balances, July 1, 2021 (Revised) at Dec. 31, 2020	39	134,629	2,003,576	(368,074)	(32,889)	(23,496)	1,713,785
Net income (loss)	0	0	0	23,220	0	0	23,220
Restricted stock units granted	0	0	2,930	0	0	0	2,930
Common stock dividends declared	0	0	0	(16,755)	0	0	(16,755)
Series B Preferred Stock dividends declared	0	0	0	(414)	0	0	(414)
Common stock issued for 401(k) match	0	131	3,324	0	0	0	3,455
Common stock issued to pension plans	0	1,125	21,125	0	0	0	22,250
Other comprehensive income (loss)	0	0	0	0	(2,815)	0	(2,815)
Common stock issued to directors	0	52	1,792	0	0	0	1,844
Restricted stock unit distributions	0	413	(413)	0	0	(4,525)	(4,525)
Balances at Sep. 30, 2021	39	136,350	2,032,334	(362,023)	(35,704)	(28,021)	1,742,975
Balances, July 1, 2021 (Revised) at Jun. 30, 2021	39	136,065	2,024,645	(354,866)	(29,437)	(28,021)	1,748,425
Net income (loss)	0	0	0	(979)	0	0	(979)
Restricted stock units granted	0	0	1,472	0	0	0	1,472
Common stock dividends declared	0	0	0	(6,040)	0	0	(6,040)
Series B Preferred Stock dividends declared	0	0	0	(138)	0	0	(138)
Common stock issued for 401(k) match	0	35	1,017	0	0	0	1,052
Common stock issued to pension plans	0	250	5,200	0	0	0	5,450
Other comprehensive income (loss)	0	0	0	0	(6,267)	0	(6,267)
Balances at Sep. 30, 2021	$ 39	$ 136,350	$ 2,032,334	$ (362,023)	$ (35,704)	$ (28,021)	$ 1,742,975

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) (Parentheticals) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Common stock dividends declared, per common share (in dollars per share)	$ 0.01125	$ 0.0025	$ 0.03125	$ 0.0075
Preferred stock dividends declared, per share (in dollars per share)	$ 0.875	$ 0.875	$ 2.625	$ 2.625
Common stock issued for 401(k) match, shares (in shares)	141,000	439,000	524,000	1,396,000
Common stock issued to pension plans, shares (in shares)	1,000,000	2,058,000	4,500,000	2,225,000
Stock issued to directors, shares (in shares)		391,000	207,000	391,000
Restricted stock unit distributions, shares (in shares)			1,653,000	1,702,000
Common stock issued for employee incentive compensation, shares (in shares)				2,800,000
Treasury shares issued to charitable foundation, share (in shares)				650,000

Note 1 - Basis of Preparation o

Note 1 - Basis of Preparation of Financial Statements	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block]	1. Basis of Preparation of Financial Statements The accompanying unaudited interim condensed consolidated financial statements of Hecla Mining Company and its subsidiaries (collectively, “Hecla,” “the Company,” “we,” “our,” or “us,” except where the context requires otherwise) have been prepared in accordance with the instructions to Form 10 not 10 December 31, 2020 “2020 10 December 31, 2020 three nine September 30, 2021 not may December 31, 2021. The 2019 19” March 11, 2020, 19 March 2020, 19, March 24, 2020 April 15, 2020 April 2020, May 30, 2020. March 2020 first 2020 2020 first nine 2021 2020 March 2020 second 2021. third 2021 third 2020 19 first nine 2021 19 19 first nine 2021. We have taken precautionary measures to mitigate the impact of COVID- 19, may 19 In the third 2021, June 1, 2013 June 30, 2021. Note 2

Note 2 - Revision of Previously

Note 2 - Revision of Previously Issued Financial Statements for Immaterial Misstatements	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Error Correction [Text Block]	Note 2. Casa Berardi DDA In the third 2021, June 1, 2013 June 30, 2021 8 We assessed the materiality of the effect of the errors on our prior quarterly and annual financial statements, both quantitatively and qualitatively, in accordance with the SEC’s Staff Accounting Bulletin ("SAB") No. 99, No. 108, not no Reclassification of State Mining Income Taxes As disclosed during the first 2021, Cost of sales and other direct production costs Income and mining tax provision January 1, 2021. The following tables present a summary of the impact, by financial statement line item, of the Revisions for the three March 31, 2021 2020, June 30, 2021 2020 September 30, 2020, six June 30, 2021and 2020, nine September 30, 2020, December 31, 2020 2019, December 31, 2018: Three Months Ended March 31, 2021 (in thousands, except per share amounts) As Previously Reported Adjustment As Revised Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) Depreciation, depletion and amortization $ 49,331 $ (2,589 ) $ 46,742 Total cost of sales 146,040 (2,589 ) 143,451 Gross profit 64,812 2,589 67,401 Income from operations 38,449 2,589 41,038 Income before income and mining taxes 23,605 2,589 26,194 Income and mining tax provision (4,634 ) (109 ) (4,743 ) Net income 18,971 2,480 21,451 Income applicable to common shareholders 18,833 2,480 21,313 Comprehensive income 20,803 2,480 23,283 Basic income per common share after preferred dividends (in cents) 3.5 0.5 4.0 Diluted income per common share after preferred dividends (in cents) 3.5 0.5 4.0 — Condensed Consolidated Statements of Cash Flows (Unaudited) Net income 18,971 2,480 21,451 Depreciation, depletion and amortization 49,546 (2,589 ) 46,957 Deferred income taxes 32 109 141 Cash provided by operating activities 37,936 — 37,936 Three Months Ended June 30, 2021 (in thousands, except per share amounts) As Previously Reported Adjustment As Revised Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) Depreciation, depletion and amortization $ 48,403 $ (2,671 ) $ 45,732 Total cost of sales 158,723 (2,671 ) 156,052 Gross profit 59,260 2,671 61,931 Income from operations 26,462 2,671 29,133 Loss before income and mining taxes (4,057 ) 2,671 (1,386 ) Income and mining tax benefit 4,842 (708 ) 4,134 Net income 785 1,963 2,748 Income applicable to common shareholders 647 1,963 2,610 Comprehensive income 2,405 1,963 4,368 Basic income per common share after preferred dividends (in cents) 0.1 0.4 0.5 Diluted income per common share after preferred dividends (in cents) 0.1 0.4 0.5 Six Months Ended June 30, 2021 (in thousands, except per share amounts) As Previously Reported Adjustment As Revised Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) Depreciation, depletion and amortization $ 97,734 $ (5,260 ) $ 92,474 Total cost of sales 304,763 (5,260 ) 299,503 Gross profit 124,072 5,260 129,332 Income from operations 64,911 5,260 70,171 Income before income and mining taxes 19,548 5,260 24,808 Income and mining tax benefit (provision) 208 (817 ) (609 ) Net income 19,756 4,443 24,199 Income applicable to common shareholders 19,480 4,443 23,923 Comprehensive income 23,208 4,443 27,651 Basic income per common share after preferred dividends (in cents) 3.6 0.7 4.3 Diluted income per common share after preferred dividends (in cents) 3.6 0.7 4.3 — Condensed Consolidated Statements of Cash Flows (Unaudited) Net income 19,756 4,443 24,199 Depreciation, depletion and amortization 98,121 (5,260 ) 92,861 Deferred income taxes (8,562 ) 817 (7,745 ) Cash provided by operating activities 124,240 — 124,240 Three Months Ended March 31, 2020 (in thousands, except per share amounts) As Previously Reported Adjustment As Revised Condensed Consolidated Statements of Operations and Comprehensive (Loss) Income (Unaudited) Cost of sales and other direct production costs $ 85,887 $ (167 ) $ 85,720 Depreciation, depletion and amortization 39,666 (1,851 ) 37,815 Total cost of sales 125,553 (2,018 ) 123,535 Gross profit 11,372 2,018 13,390 Loss from operations (15,064 ) 2,018 (13,046 ) Loss before income and mining taxes (18,247 ) 2,018 (16,229 ) Income and mining tax benefit 1,062 (657 ) 405 Net loss (17,185 ) 1,361 (15,824 ) Loss applicable to common shareholders (17,323 ) 1,361 (15,962 ) Comprehensive loss (36,520 ) 1,361 (35,159 ) Basic loss per common share after preferred dividends (in cents) (3.3 ) 0.3 (3.0 ) Diluted loss per common share after preferred dividends (in cents) (3.3 ) 0.3 (3.0 ) — Condensed Consolidated Statements of Cash Flows (Unaudited) Net loss (17,185 ) 1,361 (15,824 ) Depreciation, depletion and amortization 41,630 (1,851 ) 39,779 Deferred income taxes (3,252 ) 490 (2,762 ) Cash provided by operating activities 4,927 — 4,927 Three Months Ended June 30, 2020 (in thousands, except per share amounts) As Previously Reported Adjustment As Revised Condensed Consolidated Statements of Operations and Comprehensive (Loss) Income (Unaudited) Cost of sales and other direct production costs $ 92,853 $ (1,295 ) $ 91,558 Depreciation, depletion and amortization 39,423 (2,736 ) 36,687 Total cost of sales 132,276 (4,031 ) 128,245 Gross profit 34,079 4,031 38,110 Income from operations 9,874 4,031 13,905 Loss before income and mining taxes (13,402 ) 4,031 (9,371 ) Income and mining tax provision (626 ) (2,020 ) (2,646 ) Net loss (14,028 ) 2,011 (12,017 ) Income applicable to common shareholders (14,166 ) 2,011 (12,155 ) Comprehensive loss (3,644 ) 2,011 (1,633 ) Basic loss per common share after preferred dividends (in cents) (2.7 ) 0.4 (2.3 ) Diluted loss per common share after preferred dividends (in cents) (2.7 ) 0.4 (2.3 ) Six Months Ended June 30, 2020 (in thousands, except per share amounts) As Previously Reported Adjustment As Revised Condensed Consolidated Statements of Operations and Comprehensive (Loss) Income (Unaudited) Cost of sales and other direct production costs $ 178,740 $ (1,462 ) $ 177,278 Depreciation, depletion and amortization 79,089 (4,587 ) 74,502 Total cost of sales 257,829 (6,049 ) 251,780 Gross profit 45,451 6,049 51,500 (Loss) income from operations (4,513 ) 6,049 1,536 Loss before income and mining taxes (31,649 ) 6,049 (25,600 ) Income and mining tax benefit (provision) 436 (2,678 ) (2,242 ) Net loss (31,213 ) 3,371 (27,842 ) Loss applicable to common shareholders (31,489 ) 3,371 (28,118 ) Comprehensive loss (40,164 ) 3,371 (36,793 ) Basic loss per common share after preferred dividends (in cents) (6.0 ) 0.6 (5.4 ) Diluted loss per common share after preferred dividends (in cents) (6.0 ) 0.6 (5.4 ) Condensed Consolidated Statements of Cash Flows (Unaudited) Net loss (31,213 ) 3,371 (27,842 ) Depreciation, depletion and amortization 84,185 (4,587 ) 79,598 Deferred income taxes (5,165 ) 1,216 (3,949 ) Cash provided by operating activities 42,453 — 42,453 Three Months Ended September 30, 2020 (in thousands, except per share amounts) As Previously Reported Adjustment As Revised Condensed Consolidated Statements of Operations and Comprehensive (Loss) Income (Unaudited) Cost of sales and other direct production costs $ 105,977 $ (2,952 ) $ 103,025 Depreciation, depletion and amortization 40,238 (2,248 ) 37,990 Total cost of sales 146,215 (5,200 ) 141,015 Gross profit 53,488 5,200 58,688 Income from operations 31,315 5,200 36,515 Income before income and mining taxes 15,261 5,200 20,461 Income and mining tax provision (1,633 ) (3,548 ) (5,181 ) Net income 13,628 1,652 15,280 Income applicable to common shareholders 13,490 1,652 15,142 Comprehensive income 19,778 1,652 21,430 Basic income per common share after preferred dividends (in cents) 2.6 0.3 2.9 Diluted income per common share after preferred dividends (in cents) 2.6 0.2 2.8 Nine Months Ended September 30, 2020 (in thousands, except per share amounts) As Previously Reported Adjustment As Revised Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) Cost of sales and other direct production costs $ 284,717 $ (4,414 ) $ 280,303 Depreciation, depletion and amortization 119,327 (6,835 ) 112,492 Total cost of sales 404,044 (11,249 ) 392,795 Gross profit 98,939 11,249 110,188 Income from operations 26,802 11,249 38,051 Loss before income and mining taxes (16,388 ) 11,249 (5,139 ) Income and mining tax benefit (provision) (1,197 ) (6,226 ) (7,423 ) Net loss (17,585 ) 5,023 (12,562 ) Loss applicable to common shareholders (17,999 ) 5,023 (12,976 ) Comprehensive income (20,386 ) 5,023 (15,363 ) Basic loss per common share after preferred dividends (in cents) (3.4 ) 0.9 (2.5 ) Diluted loss per common share after preferred dividends (in cents) (3.4 ) 0.9 (2.5 ) Condensed Consolidated Statements of Cash Flows (Unaudited) Net loss (17,585 ) 5,023 (12,562 ) Depreciation, depletion and amortization 126,911 (6,835 ) 120,076 Deferred income taxes (6,390 ) 1,812 (4,578 ) Cash provided by operating activities 115,892 — 115,892 For the Year Ended December 31, 2018 (in thousands, except per share amounts) As Previously Reported Adjustment As Revised Consolidated Statements of Operations and Comprehensive Loss Cost of sales and other direct production costs $ 353,994 $ (1,844 ) $ 352,150 Depreciation, depletion and amortization 134,044 (2,224 ) 131,820 Total cost of sales 488,038 (4,068 ) 483,970 Gross profit 79,099 (4,068 ) 75,031 Loss from operations (39,126 ) 4,068 (35,058 ) Loss before income and mining taxes (33,264 ) 4,068 (29,196 ) Income and mining tax benefit 6,701 (4,256 ) 2,445 Net loss (26,563 ) (188 ) (26,751 ) Loss applicable to common shareholders (27,115 ) (188 ) (27,303 ) Comprehensive loss (44,370 ) (188 ) (44,558 ) Basic loss per common share after preferred dividends (in cents) (6.3 ) — (6.3 ) Diluted loss per common share after preferred dividends (in cents) (6.3 ) — (6.3 ) Consolidated Statements of Cash Flows Net loss (26,563 ) (188 ) (26,751 ) Depreciation, depletion and amortization 140,905 (2,224 ) 138,681 Deferred income taxes 6,278 2,412 8,690 Cash provided by operating activities 94,221 — 94,221 As of and for the Year Ended December 31, 2019 (in thousands, except per share amounts) As Previously Reported Adjustment As Revised Consolidated Balance Sheet Inventories: Concentrates, doré, and stockpiled ore $ 30,364 $ (286 ) $ 30,078 Total current assets 179,124 (286 ) 178,838 Properties, plants, equipment and mineral interests, net 2,423,698 23,752 2,447,450 Total assets 2,637,308 23,466 2,660,774 Deferred tax liability 138,282 19,355 157,637 Total liabilities 944,885 19,355 964,240 Accumulated deficit (353,331 ) 4,111 (349,220 ) Total shareholders' equity 1,692,423 4,111 1,696,534 Total liabilities and shareholders' equity 2,637,308 23,466 2,660,774 Consolidated Statements of Operations and Comprehensive Loss Cost of sales and other direct production costs $ 450,349 $ (2,364 ) $ 447,985 Depreciation, depletion and amortization 199,518 (8,067 ) 191,451 Total cost of sales 649,867 (10,431 ) 639,436 Gross profit 23,399 10,431 33,830 Loss from operations (57,109 ) 10,431 (46,678 ) Loss before income and mining taxes (123,658 ) 10,431 (113,227 ) Income and mining tax benefit 24,101 (5,783 ) 18,318 Net loss (99,557 ) 4,648 (94,909 ) Loss applicable to common shareholders (100,109 ) 4,648 (95,461 ) Comprehensive loss (94,398 ) 4,648 (89,750 ) Basic loss per common share after preferred dividends (in cents) (20.4 ) 0.9 (19.5 ) Diluted loss per common share after preferred dividends (in cents) (20.4 ) 0.9 (19.5 ) Consolidated Statements of Cash Flows Net loss (99,557 ) 4,648 (94,909 ) Depreciation, depletion and amortization 204,475 (8,067 ) 196,408 Deferred income taxes 5,668 3,419 9,087 Cash provided by operating activities 120,866 — 120,866 As of and for the Year Ended December 31, 2020 (in thousands, except per share amounts) As Previously Reported Adjustment As Revised Consolidated Balance Sheet Inventories: Concentrates, doré, and stockpiled ore $ 57,936 $ (369 ) $ 57,567 Total current assets 284,681 (369 ) 284,312 Properties, plants, equipment and mineral interests, net 2,345,219 32,855 2,378,074 Total assets 2,667,724 32,486 2,700,210 Accrued taxes 8,349 (2,575 ) 5,774 Total current liabilities 149,785 (2,575 ) 147,210 Deferred tax liability 132,475 23,616 156,091 Total liabilities 965,384 21,041 986,425 Accumulated deficit (379,519 ) 11,445 (368,074 ) Total shareholders' equity 1,702,340 11,445 1,713,785 Total liabilities and shareholders' equity 2,667,724 32,486 2,700,210 Consolidated Statements of Operations and Comprehensive Loss Cost of sales and other direct production costs 389,040 (6,377 ) 382,663 Depreciation, depletion and amortization 157,130 (9,020 ) 148,110 Total cost of sales 546,170 (15,397 ) 530,773 Gross profit 145,703 15,397 161,100 Income from operations 51,581 15,397 66,978 Loss before income and mining taxes (16,655 ) 15,397 (1,258 ) Income and mining tax provision (135 ) (8,064 ) (8,199 ) Net loss (16,790 ) 7,333 (9,457 ) Loss applicable to common shareholders (17,342 ) 7,333 (10,009 ) Comprehensive loss (12,369 ) 7,333 (5,036 ) Basic loss per common share after preferred dividends (in cents) (3.3 ) 1.4 (1.9 ) Diluted loss per common share after preferred dividends (in cents) (3.3 ) 1.4 (1.9 ) Consolidated Statements of Cash Flows Net loss (16,790 ) 7,333 (9,457 ) Depreciation, depletion and amortization 164,026 (9,020 ) 155,006 Deferred income taxes (5,505 ) 1,687 (3,818 ) Cash provided by operating activities 180,793 — 180,793

Note 3 - Business Segments and

Note 3 - Business Segments and Sales of Products	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	Note 3. Business Segments and Sales of Products We discover, acquire and develop mines and other mineral interests and produce and market concentrates, carbon material and doré which contain silver, gold, lead and zinc. We are currently organized and managed in five segments, which represent our operating units: the Greens Creek unit, the Lucky Friday unit, the Casa Berardi unit, the San Sebastian exploration unit, and the Nevada Operations unit. General corporate activities not not The following tables present information about our reportable segments for the three nine September 30, 2021 2020 Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Net sales to unaffiliated customers: Greens Creek $ 84,806 $ 93,494 $ 296,978 $ 232,218 Lucky Friday 29,783 20,812 98,550 35,097 Casa Berardi 56,065 53,554 185,098 149,731 San Sebastian — 9,138 176 23,998 Nevada Operations 22,906 22,705 41,593 61,939 $ 193,560 $ 199,703 $ 622,395 $ 502,983 Income (loss) from operations: Revised Revised Greens Creek $ 26,572 $ 44,477 $ 127,605 $ 76,762 Lucky Friday 6,187 950 24,247 (12,388 ) Casa Berardi (6,233 ) 1,419 4,944 5,330 San Sebastian (1,727 ) 1,946 (4,951 ) 1,766 Nevada Operations (12,077 ) 5,486 (35,558 ) 6,830 Other (21,294 ) (17,763 ) (54,688 ) (40,249 ) $ (8,572 ) $ 36,515 $ 61,599 $ 38,051 The following table presents identifiable assets by reportable segment as of September 30, 2021 December 31, 2020 September 30, 2021 December 31, 2020 Identifiable assets: Revised Greens Creek $ 607,207 $ 610,360 Lucky Friday 512,742 520,463 Casa Berardi 705,328 727,008 San Sebastian 38,186 42,617 Nevada Operations 477,621 513,309 Other 333,333 286,453 $ 2,674,417 $ 2,700,210 Sales of products by metal for the three nine September 30, 2021 2020 Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Silver $ 61,890 $ 79,684 $ 232,414 $ 179,013 Gold 94,984 98,457 282,471 278,363 Lead 18,082 13,370 56,198 32,244 Zinc 30,273 26,779 89,501 65,540 Less: Smelter and refining charges (11,669 ) (18,587 ) (38,189 ) (52,177 ) Sales of products $ 193,560 $ 199,703 $ 622,395 $ 502,983 Sales of products for the three nine September 30, 2021 three nine September 30, 2020 Note 9

Note 4 - Income and Mining Taxe

Note 4 - Income and Mining Taxes	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Income Tax Disclosure [Text Block]	Note 4. Income and Mining Taxes Major components of our income and mining tax benefit (provision) for the three nine September 30, 2021 2020 Three Months Ended Nine Months Ended September 30, September 30, 2021 2020 2021 2020 Revised Revised Current: Domestic $ (2,176 ) $ (705 ) $ (7,489 ) $ 1,690 Foreign (1,578 ) (2,286 ) (4,690 ) (6,005 ) Total current income and mining tax provision (3,754 ) (2,991 ) (12,179 ) (7,695 ) Deferred: Domestic 3,213 (2,761 ) 8,226 (1,108 ) Foreign 5,074 571 7,877 1,380 Total deferred income and mining tax benefit 8,287 (2,190 ) 16,103 272 Total income and mining tax benefit (provision) $ 4,533 $ (5,181 ) $ 3,924 $ (7,423 ) The income and mining tax benefit (provision) for the three nine September 30, 2021 2020 three nine September 30, 2021

Note 5 - Employee Benefit Plans

Note 5 - Employee Benefit Plans	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Retirement Benefits [Text Block]	Note 5. Employee Benefit Plans We sponsor defined benefit pension plans covering substantially all U.S. employees. Net periodic pension cost for the plans consisted of the following for the three nine September 30, 2021 2020 Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Service cost $ 1,455 $ 1,334 $ 4,365 $ 4,002 Interest cost 1,248 1,404 3,744 4,212 Expected return on plan assets (2,313 ) (1,872 ) (6,939 ) (5,616 ) Amortization of prior service cost 99 29 297 87 Amortization of net loss 1,125 1,163 3,375 3,489 Net periodic pension cost $ 1,614 $ 2,058 $ 4,842 $ 6,174 For the three nine September 30, 2021 2020, three nine September 30, 2021, three nine September 30, 2020, In January 2021, 2021. September 2021, not 2021, may

Note 6 - (Loss) Income Per Comm

Note 6 - (Loss) Income Per Common Share	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Earnings Per Share [Text Block]	Note 6. (Loss) Income Per Common Share We calculate basic (loss) income per common share on the basis of the weighted average number of shares of common stock outstanding during the period. Diluted (loss) income per share is calculated using the weighted average number of shares of common stock outstanding during the period plus the effect of potential dilutive common shares during the period using the treasury stock and if-converted methods. Potential dilutive shares of common stock include outstanding unvested restricted stock awards, stock units, warrants and convertible preferred stock for periods in which we have reported net income. For periods in which we report net losses, potential dilutive shares of common stock are excluded, as their conversion and exercise would be anti-dilutive. The following table represents net (loss) income per common share – basic and diluted (in thousands, except (loss) income per share): Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Revised Revised Numerator Net (loss) income $ (979 ) $ 15,280 $ 23,220 $ (12,562 ) Preferred stock dividends (138 ) (138 ) (414 ) (414 ) Net (loss) income applicable to common shares $ (1,117 ) $ 15,142 $ 22,806 $ (12,976 ) Denominator Basic weighted average common shares 536,966 529,838 535,542 526,098 Dilutive restricted stock units, warrants and deferred shares — 5,950 6,227 — Diluted weighted average common shares 536,966 535,788 541,769 526,098 Basic (loss) income per common share (in cents) (0.2 ) 2.9 4.3 (2.5 ) Diluted (loss) income per common share (in cents) (0.2 ) 2.8 4.2 (2.5 ) Diluted (loss) income per share for the three nine September 30, 2021 2020 no For the three September 30, 2021 nine September 30, 2020, no nine September 30, 2021, one three September 30, 2020, one

Note 7 - Stockholders' Equity

Note 7 - Stockholders' Equity	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Stockholders' Equity Note Disclosure [Text Block]	Note 7. Stockholders Equity Stock-based Compensation Plans In June 2021, • 552,660 restricted stock units, with 177,872 of those vesting in June 2022, June 2023, June 2024; • 47,590 restricted stock units, with one June 2022 June 2023, • 29,187 restricted stock units that vest in June 2022. Stock-based compensation expense will be recognized on a straight-line basis over the vesting period of the respective award. Total stock-based compensation expense of $5.0 million related to the above awards will be recognized as follows: $1.7 million, $2.2 million, $0.9 million and $0.2 million during 2021, 2022, 2023 2024, In June 2021, three December 31, 2023. thirty June 2019 December 31, 2021. Stock-based compensation expense for restricted stock unit and performance-based grants to employees and shares issued to non-employee directors totaled $1.5 million and $4.8 million in the third first nine 2021, third first nine 2020, In connection with the vesting of restricted stock units and other stock grants, employees have in the past, at their election and when permitted by us, chosen to satisfy their minimum tax withholding obligations through net share settlement, pursuant to which the Company withholds, and retains as treasury stock, the number of shares necessary to satisfy such withholding obligations and pays the obligations in cash. As a result, in the first nine 2021 first nine 2020 Common Stock Dividends In each of May September 2021, 1 September 2021 second third 2021, May 5, 2021 August 4, 2021, 1.125 0.375 November 3, 2021, June September 2021, December 2021. Quarterly Average Realized Silver Price ($ per ounce) Quarterly Silver- Linked Dividend (cents per share) Annualized Silver- Linked Dividend (cents per share) Annualized Minimum Dividend (cents per share) Annualized Dividends per Share: Silver- Linked and Minimum (cents per share) $20 0.25 1 1.5 2.5 $25 1 4 1.5 5.5 $30 1.5 6 1.5 7.5 $35 2.5 10 1.5 11.5 $40 3.5 14 1.5 15.5 $45 4.5 18 1.5 19.5 $50 5.5 22 1.5 23.5 At-The-Market Equity Distribution Agreement Pursuant to an equity distribution agreement dated February 18, 2021, may not may 1933, 3. September 30, 2021.

Note 8 - Debt, Credit Facility

Note 8 - Debt, Credit Facility and Leases	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Debt Disclosure [Text Block]	Note 8. Debt, Credit Facility and Leases Our debt as of September 30, 2021 December 31, 2020 February 15, 2028 ( 2020 July 9, 2025 ( September 30, 2021 December 31, 2020 September 30, 2021 Senior Notes IQ Notes Total Principal $ 475,000 $ 37,862 $ 512,862 Unamortized discount/premium and issuance costs (5,779 ) 629 (5,150 ) Long-term debt balance $ 469,221 $ 38,491 $ 507,712 December 31, 2020 Senior Notes IQ Notes Total Principal $ 475,000 $ 37,886 $ 512,886 Unamortized discount/premium and issuance costs (6,462 ) 818 (5,644 ) Long-term debt balance $ 468,538 $ 38,704 $ 507,242 The following table summarizes the scheduled annual future payments, including interest, for our Senior Notes, IQ Notes, and finance and operating leases as of September 30, 2021 September 30, 2021. Twelve-month period ending September 30, Senior Notes IQ Notes Finance Leases Operating Leases 2022 $ 34,438 $ 2,467 $ 6,336 $ 3,166 2023 34,438 2,467 4,590 2,590 2024 34,438 2,467 3,313 1,037 2025 34,438 2,467 855 533 2026 34,438 37,301 — 524 Thereafter 522,349 — — 1,953 Total $ 694,539 $ 47,169 $ 15,094 $ 9,803 Credit Facility In July 2018, February 7, 2023. September 30, 2021 December 31, 2020, We are also able to obtain letters of credit under the facility, and for any such letters we are required to pay a participation fee of between 2.25% and 4.00% of the amount of the letters of credit based on our total leverage ratio, as well as a fronting fee to each issuing bank of 0.20% annually on the average daily dollar amount of any outstanding letters of credit. There were $21.0 million in letters of credit outstanding as of September 30, 2021. We believe we were in compliance with all covenants under the credit agreement as of September 30, 2021.

Note 9 - Derivative Instruments

Note 9 - Derivative Instruments	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Derivative Instruments and Hedging Activities Disclosure [Text Block]	Note 9. Derivative Instruments General Our current risk management policy provides that up to 75% of: • our future foreign currency-related operating cost exposure for five may • our planned lead and zinc metals price exposure for five may • our planned silver and gold metals price exposure for five may not not In addition, our risk management policy provides that price exposure between the time of shipment and final settlement on silver, gold, lead and zinc contained in our concentrate shipments may 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 exceeds the contract price for quantities of our production and/or forecasted costs covered under contract positions. Foreign Currency Our wholly-owned subsidiary owning the Casa Berardi operation is a USD-functional currency entity which routinely incurs expenses denominated in CAD. Such expenses expose us to exchange rate fluctuations between the USD and CAD. We have a program to manage our exposure to fluctuations in the exchange rate between the USD and CAD for this subsidiary’s future operating costs denominated in CAD. The program utilizes forward contracts to buy CAD, and each contract is designated as a cash flow hedge. As of September 30, 2021, CAD$245.6 USD$187.7 2021 2025 As of September 30, 2021 December 31, 2020, September 30, December 31, Balance sheet line item: 2021 2020 Current derivatives assets $ 2.5 $ 3.5 Non-current derivatives assets 2.2 4.2 Current derivatives liability — — Non-current derivative liability 0.2 — Net unrealized gains of approximately $4.8 million related to the effective portion of the hedges were included in accumulated other comprehensive loss as of September 30, 2021. September 30, 2021 twelve nine September 30, 2021. nine September 30, 2021. 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 The following tables summarize the quantities of metals committed under forward sales contracts at September 30, 2021 December 31, 2020: September 30, 2021 Ounces/pounds under contract (in 000 s) Average price per ounce/pound Silver Gold Zinc Lead Silver Gold Zinc Lead (ounces) (ounces) (pounds) (pounds) (ounces) (ounces) (pounds) (pounds) Contracts on provisional sales 2021 settlements 1,190 4 20,867 9,866 $ 23.15 $ 1,776 $ 1.35 $ 1.01 Contracts on forecasted sales 2021 settlements — — 7,771 6,779 N/A N/A $ 1.26 $ 0.94 2022 settlements — — 60,043 63,769 N/A N/A $ 1.28 $ 0.98 2023 settlements — — 76,280 70,327 N/A N/A $ 1.29 $ 1.00 2024 settlements — — 43,762 — N/A N/A $ 1.31 N/A December 31, 2020 Ounces/pounds under contract (in 000 s) Average price per ounce/pound Silver Gold Zinc Lead Silver Gold Zinc Lead (ounces) (ounces) (pounds) (pounds) (ounces) (ounces) (pounds) (pounds) Contracts on provisional sales 2021 settlements 1,282 4 23,314 4,905 $ 25.00 $ 1,858 $ 1.19 $ 0.90 Contracts on forecasted sales 2021 settlements — — 41,577 30,876 N/A N/A $ 1.17 $ 0.88 2022 settlements — — 18,519 — N/A N/A $ 1.28 N/A As of September 30, 2021, not fourth 2021, We recorded the following balances for the fair value of the forward contracts as of September 30, 2021 December 31, 2020 September 30, 2021 December 31, 2020 Balance sheet line item: Contracts in an asset position Contracts in a liability position Net asset (liability) Contracts in an asset position Contracts in a liability position Net asset (liability) Current derivatives assets $ 3.1 $ (0.4 ) $ 2.7 $ 0.2 $ (0.2 ) $ — Non-current derivatives assets 7.1 (2.5 ) 4.6 0.5 (0.1 ) 0.4 Current derivatives liabilities 0.3 (4.4 ) (4.1 ) 0.1 (11.8 ) (11.7 ) Non-current derivatives liabilities 1.2 (1.8 ) (0.6 ) — — — We recognized net gains of $5.0 million and $4.5 million during the third first nine 2021, third first nine 2020, We recognized a net gain of $12.1 million and net loss of $4.7 million during the third first nine 2021, third first nine 2020, 2021 2020 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 September 30, 2021, not September 30, 2021, September 30, 2021,

Note 10 - Fair Value Measuremen

Note 10 - Fair Value Measurement	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Fair Value Disclosures [Text Block]	Note 10. Fair Value Measurement Accounting guidance has established a hierarchy for inputs used to measure assets and liabilities at fair value on a recurring basis. The three Level 1: Level 2: Level 3: The table below sets forth our assets and liabilities 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 (in thousands). Description Balance at September 30, 2021 Balance at December 31, 2020 Input Hierarchy Level Assets: Cash and cash equivalents: Money market funds and other bank deposits $ 190,904 $ 129,830 Level 1 Current and non-current investments: Equity securities 8,030 19,389 Level 1 Trade accounts receivable: Receivables from provisional concentrate sales 32,821 27,864 Level 2 Restricted cash balances: Certificates of deposit and other deposits 1,053 1,053 Level 1 Derivative contracts - current and non-current derivative assets: Foreign exchange contracts 4,655 7,647 Level 2 Metal forward and put option contracts 7,313 381 Level 2 Total assets $ 244,776 $ 186,164 Liabilities: Derivative contracts - current derivatives liabilities and other non-current liabilities: Foreign exchange contracts $ 200 $ 19 Level 2 Metal forward and put option contracts 4,731 11,737 Level 2 Total liabilities $ 4,931 $ 11,756 Cash and cash equivalents consist primarily of money market funds and are valued at cost, which approximates fair value, and a small portion consists of municipal bonds having maturities of less than 90 Current and non-current restricted cash 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 available for sale securities consist of marketable equity securities of companies in the mining industry which are valued using quoted market prices for each security. Trade accounts receivable from provisional concentrate sales are subject to final pricing and valued using quoted prices based on forward curves for the particular metals. The embedded derivative contained in our concentrate sales is adjusted to fair market value through earnings each period prior to final settlement. We use financially-settled forward contracts to manage exposure to changes in the exchange rate between USD and CAD, and the impact on CAD-denominated operating costs incurred at our Casa Berardi unit (see Note 9 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 Note 9 At September 30, 2021, 1 Note 8

Note 11 - Commitments, Continge

Note 11 - Commitments, Contingencies and Obligations	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	Note 11. Commitments, Contingencies and Obligations General We follow GAAP guidance in determining our accruals and disclosures with respect to loss contingencies, and evaluate such accruals and contingencies for each reporting period. Accordingly, estimated losses from loss contingencies are accrued by a charge to income when information available prior to issuance of the financial statements indicates that it is probable that a liability could be incurred and the amount of the loss can be reasonably estimated. Legal expenses associated with the contingency are expensed as incurred. If a loss contingency is not Johnny M Mine Area near San Mateo, McKinley County and San Mateo Creek Basin, New Mexico In May 2011, may August 2012, not December 2014 January 2021, first 2021 December 31, 2020) The Johnny M Mine is in an area known as the San Mateo Creek Basin (“SMCB”), which is an approximately 321 not not may $9.0 In July 2018, may Carpenter Snow Creek and Barker-Hughesville Sites in Montana In July 2010, 1980s 6 1988. In June 2011, may may In February 2017, April 2017. June December 1983, In August 2018, may not Litigation Related to Klondex Acquisition On May 24, 2019, one March 19, 2018 May 8, 2019, 10 20 1934 10b 5 first 2021. Debt See Note 8 September 30, 2021. Other Commitments Our contractual obligations as of September 30, 2021 September 30, 2021 Note 8 September 30, 2021, Other Contingencies We also have certain other contingencies resulting from litigation, claims, EPA investigations, and other commitments and are subject to a variety of environmental and safety laws and regulations incident to the ordinary course of business. We currently have no may may no not

Note 12 - Developments in Accou

Note 12 - Developments in Accounting Pronouncements	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Accounting Standards Update and Change in Accounting Principle [Text Block]	Note 12. Developments in Accounting Pronouncements Accounting Standards Updates Adopted In December 2019, No. 2019 12 740 December 15, 2020, January 1, 2021, not Accounting Standards Updates to Become Effective in Future Periods In August 2020, No. 2020 06 470 20 815 40 December 15, 2021, Certain statements contained in this Form 10 27A 1933, 21E 1934, “may,” These risks, uncertainties and other factors include, but are not 1A. 10 December 31, 2020 "2020 10 not not

Note 2 - Revision of Previous_2

Note 2 - Revision of Previously Issued Financial Statements for Immaterial Misstatements (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Schedule of Error Corrections and Prior Period Adjustments [Table Text Block]	Three Months Ended March 31, 2021 (in thousands, except per share amounts) As Previously Reported Adjustment As Revised Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) Depreciation, depletion and amortization $ 49,331 $ (2,589 ) $ 46,742 Total cost of sales 146,040 (2,589 ) 143,451 Gross profit 64,812 2,589 67,401 Income from operations 38,449 2,589 41,038 Income before income and mining taxes 23,605 2,589 26,194 Income and mining tax provision (4,634 ) (109 ) (4,743 ) Net income 18,971 2,480 21,451 Income applicable to common shareholders 18,833 2,480 21,313 Comprehensive income 20,803 2,480 23,283 Basic income per common share after preferred dividends (in cents) 3.5 0.5 4.0 Diluted income per common share after preferred dividends (in cents) 3.5 0.5 4.0 — Condensed Consolidated Statements of Cash Flows (Unaudited) Net income 18,971 2,480 21,451 Depreciation, depletion and amortization 49,546 (2,589 ) 46,957 Deferred income taxes 32 109 141 Cash provided by operating activities 37,936 — 37,936 Three Months Ended June 30, 2021 (in thousands, except per share amounts) As Previously Reported Adjustment As Revised Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) Depreciation, depletion and amortization $ 48,403 $ (2,671 ) $ 45,732 Total cost of sales 158,723 (2,671 ) 156,052 Gross profit 59,260 2,671 61,931 Income from operations 26,462 2,671 29,133 Loss before income and mining taxes (4,057 ) 2,671 (1,386 ) Income and mining tax benefit 4,842 (708 ) 4,134 Net income 785 1,963 2,748 Income applicable to common shareholders 647 1,963 2,610 Comprehensive income 2,405 1,963 4,368 Basic income per common share after preferred dividends (in cents) 0.1 0.4 0.5 Diluted income per common share after preferred dividends (in cents) 0.1 0.4 0.5 Six Months Ended June 30, 2021 (in thousands, except per share amounts) As Previously Reported Adjustment As Revised Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) Depreciation, depletion and amortization $ 97,734 $ (5,260 ) $ 92,474 Total cost of sales 304,763 (5,260 ) 299,503 Gross profit 124,072 5,260 129,332 Income from operations 64,911 5,260 70,171 Income before income and mining taxes 19,548 5,260 24,808 Income and mining tax benefit (provision) 208 (817 ) (609 ) Net income 19,756 4,443 24,199 Income applicable to common shareholders 19,480 4,443 23,923 Comprehensive income 23,208 4,443 27,651 Basic income per common share after preferred dividends (in cents) 3.6 0.7 4.3 Diluted income per common share after preferred dividends (in cents) 3.6 0.7 4.3 — Condensed Consolidated Statements of Cash Flows (Unaudited) Net income 19,756 4,443 24,199 Depreciation, depletion and amortization 98,121 (5,260 ) 92,861 Deferred income taxes (8,562 ) 817 (7,745 ) Cash provided by operating activities 124,240 — 124,240 Three Months Ended March 31, 2020 (in thousands, except per share amounts) As Previously Reported Adjustment As Revised Condensed Consolidated Statements of Operations and Comprehensive (Loss) Income (Unaudited) Cost of sales and other direct production costs $ 85,887 $ (167 ) $ 85,720 Depreciation, depletion and amortization 39,666 (1,851 ) 37,815 Total cost of sales 125,553 (2,018 ) 123,535 Gross profit 11,372 2,018 13,390 Loss from operations (15,064 ) 2,018 (13,046 ) Loss before income and mining taxes (18,247 ) 2,018 (16,229 ) Income and mining tax benefit 1,062 (657 ) 405 Net loss (17,185 ) 1,361 (15,824 ) Loss applicable to common shareholders (17,323 ) 1,361 (15,962 ) Comprehensive loss (36,520 ) 1,361 (35,159 ) Basic loss per common share after preferred dividends (in cents) (3.3 ) 0.3 (3.0 ) Diluted loss per common share after preferred dividends (in cents) (3.3 ) 0.3 (3.0 ) — Condensed Consolidated Statements of Cash Flows (Unaudited) Net loss (17,185 ) 1,361 (15,824 ) Depreciation, depletion and amortization 41,630 (1,851 ) 39,779 Deferred income taxes (3,252 ) 490 (2,762 ) Cash provided by operating activities 4,927 — 4,927 Three Months Ended June 30, 2020 (in thousands, except per share amounts) As Previously Reported Adjustment As Revised Condensed Consolidated Statements of Operations and Comprehensive (Loss) Income (Unaudited) Cost of sales and other direct production costs $ 92,853 $ (1,295 ) $ 91,558 Depreciation, depletion and amortization 39,423 (2,736 ) 36,687 Total cost of sales 132,276 (4,031 ) 128,245 Gross profit 34,079 4,031 38,110 Income from operations 9,874 4,031 13,905 Loss before income and mining taxes (13,402 ) 4,031 (9,371 ) Income and mining tax provision (626 ) (2,020 ) (2,646 ) Net loss (14,028 ) 2,011 (12,017 ) Income applicable to common shareholders (14,166 ) 2,011 (12,155 ) Comprehensive loss (3,644 ) 2,011 (1,633 ) Basic loss per common share after preferred dividends (in cents) (2.7 ) 0.4 (2.3 ) Diluted loss per common share after preferred dividends (in cents) (2.7 ) 0.4 (2.3 ) Six Months Ended June 30, 2020 (in thousands, except per share amounts) As Previously Reported Adjustment As Revised Condensed Consolidated Statements of Operations and Comprehensive (Loss) Income (Unaudited) Cost of sales and other direct production costs $ 178,740 $ (1,462 ) $ 177,278 Depreciation, depletion and amortization 79,089 (4,587 ) 74,502 Total cost of sales 257,829 (6,049 ) 251,780 Gross profit 45,451 6,049 51,500 (Loss) income from operations (4,513 ) 6,049 1,536 Loss before income and mining taxes (31,649 ) 6,049 (25,600 ) Income and mining tax benefit (provision) 436 (2,678 ) (2,242 ) Net loss (31,213 ) 3,371 (27,842 ) Loss applicable to common shareholders (31,489 ) 3,371 (28,118 ) Comprehensive loss (40,164 ) 3,371 (36,793 ) Basic loss per common share after preferred dividends (in cents) (6.0 ) 0.6 (5.4 ) Diluted loss per common share after preferred dividends (in cents) (6.0 ) 0.6 (5.4 ) Condensed Consolidated Statements of Cash Flows (Unaudited) Net loss (31,213 ) 3,371 (27,842 ) Depreciation, depletion and amortization 84,185 (4,587 ) 79,598 Deferred income taxes (5,165 ) 1,216 (3,949 ) Cash provided by operating activities 42,453 — 42,453 Three Months Ended September 30, 2020 (in thousands, except per share amounts) As Previously Reported Adjustment As Revised Condensed Consolidated Statements of Operations and Comprehensive (Loss) Income (Unaudited) Cost of sales and other direct production costs $ 105,977 $ (2,952 ) $ 103,025 Depreciation, depletion and amortization 40,238 (2,248 ) 37,990 Total cost of sales 146,215 (5,200 ) 141,015 Gross profit 53,488 5,200 58,688 Income from operations 31,315 5,200 36,515 Income before income and mining taxes 15,261 5,200 20,461 Income and mining tax provision (1,633 ) (3,548 ) (5,181 ) Net income 13,628 1,652 15,280 Income applicable to common shareholders 13,490 1,652 15,142 Comprehensive income 19,778 1,652 21,430 Basic income per common share after preferred dividends (in cents) 2.6 0.3 2.9 Diluted income per common share after preferred dividends (in cents) 2.6 0.2 2.8 Nine Months Ended September 30, 2020 (in thousands, except per share amounts) As Previously Reported Adjustment As Revised Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) Cost of sales and other direct production costs $ 284,717 $ (4,414 ) $ 280,303 Depreciation, depletion and amortization 119,327 (6,835 ) 112,492 Total cost of sales 404,044 (11,249 ) 392,795 Gross profit 98,939 11,249 110,188 Income from operations 26,802 11,249 38,051 Loss before income and mining taxes (16,388 ) 11,249 (5,139 ) Income and mining tax benefit (provision) (1,197 ) (6,226 ) (7,423 ) Net loss (17,585 ) 5,023 (12,562 ) Loss applicable to common shareholders (17,999 ) 5,023 (12,976 ) Comprehensive income (20,386 ) 5,023 (15,363 ) Basic loss per common share after preferred dividends (in cents) (3.4 ) 0.9 (2.5 ) Diluted loss per common share after preferred dividends (in cents) (3.4 ) 0.9 (2.5 ) Condensed Consolidated Statements of Cash Flows (Unaudited) Net loss (17,585 ) 5,023 (12,562 ) Depreciation, depletion and amortization 126,911 (6,835 ) 120,076 Deferred income taxes (6,390 ) 1,812 (4,578 ) Cash provided by operating activities 115,892 — 115,892 For the Year Ended December 31, 2018 (in thousands, except per share amounts) As Previously Reported Adjustment As Revised Consolidated Statements of Operations and Comprehensive Loss Cost of sales and other direct production costs $ 353,994 $ (1,844 ) $ 352,150 Depreciation, depletion and amortization 134,044 (2,224 ) 131,820 Total cost of sales 488,038 (4,068 ) 483,970 Gross profit 79,099 (4,068 ) 75,031 Loss from operations (39,126 ) 4,068 (35,058 ) Loss before income and mining taxes (33,264 ) 4,068 (29,196 ) Income and mining tax benefit 6,701 (4,256 ) 2,445 Net loss (26,563 ) (188 ) (26,751 ) Loss applicable to common shareholders (27,115 ) (188 ) (27,303 ) Comprehensive loss (44,370 ) (188 ) (44,558 ) Basic loss per common share after preferred dividends (in cents) (6.3 ) — (6.3 ) Diluted loss per common share after preferred dividends (in cents) (6.3 ) — (6.3 ) Consolidated Statements of Cash Flows Net loss (26,563 ) (188 ) (26,751 ) Depreciation, depletion and amortization 140,905 (2,224 ) 138,681 Deferred income taxes 6,278 2,412 8,690 Cash provided by operating activities 94,221 — 94,221 As of and for the Year Ended December 31, 2019 (in thousands, except per share amounts) As Previously Reported Adjustment As Revised Consolidated Balance Sheet Inventories: Concentrates, doré, and stockpiled ore $ 30,364 $ (286 ) $ 30,078 Total current assets 179,124 (286 ) 178,838 Properties, plants, equipment and mineral interests, net 2,423,698 23,752 2,447,450 Total assets 2,637,308 23,466 2,660,774 Deferred tax liability 138,282 19,355 157,637 Total liabilities 944,885 19,355 964,240 Accumulated deficit (353,331 ) 4,111 (349,220 ) Total shareholders' equity 1,692,423 4,111 1,696,534 Total liabilities and shareholders' equity 2,637,308 23,466 2,660,774 Consolidated Statements of Operations and Comprehensive Loss Cost of sales and other direct production costs $ 450,349 $ (2,364 ) $ 447,985 Depreciation, depletion and amortization 199,518 (8,067 ) 191,451 Total cost of sales 649,867 (10,431 ) 639,436 Gross profit 23,399 10,431 33,830 Loss from operations (57,109 ) 10,431 (46,678 ) Loss before income and mining taxes (123,658 ) 10,431 (113,227 ) Income and mining tax benefit 24,101 (5,783 ) 18,318 Net loss (99,557 ) 4,648 (94,909 ) Loss applicable to common shareholders (100,109 ) 4,648 (95,461 ) Comprehensive loss (94,398 ) 4,648 (89,750 ) Basic loss per common share after preferred dividends (in cents) (20.4 ) 0.9 (19.5 ) Diluted loss per common share after preferred dividends (in cents) (20.4 ) 0.9 (19.5 ) Consolidated Statements of Cash Flows Net loss (99,557 ) 4,648 (94,909 ) Depreciation, depletion and amortization 204,475 (8,067 ) 196,408 Deferred income taxes 5,668 3,419 9,087 Cash provided by operating activities 120,866 — 120,866 As of and for the Year Ended December 31, 2020 (in thousands, except per share amounts) As Previously Reported Adjustment As Revised Consolidated Balance Sheet Inventories: Concentrates, doré, and stockpiled ore $ 57,936 $ (369 ) $ 57,567 Total current assets 284,681 (369 ) 284,312 Properties, plants, equipment and mineral interests, net 2,345,219 32,855 2,378,074 Total assets 2,667,724 32,486 2,700,210 Accrued taxes 8,349 (2,575 ) 5,774 Total current liabilities 149,785 (2,575 ) 147,210 Deferred tax liability 132,475 23,616 156,091 Total liabilities 965,384 21,041 986,425 Accumulated deficit (379,519 ) 11,445 (368,074 ) Total shareholders' equity 1,702,340 11,445 1,713,785 Total liabilities and shareholders' equity 2,667,724 32,486 2,700,210 Consolidated Statements of Operations and Comprehensive Loss Cost of sales and other direct production costs 389,040 (6,377 ) 382,663 Depreciation, depletion and amortization 157,130 (9,020 ) 148,110 Total cost of sales 546,170 (15,397 ) 530,773 Gross profit 145,703 15,397 161,100 Income from operations 51,581 15,397 66,978 Loss before income and mining taxes (16,655 ) 15,397 (1,258 ) Income and mining tax provision (135 ) (8,064 ) (8,199 ) Net loss (16,790 ) 7,333 (9,457 ) Loss applicable to common shareholders (17,342 ) 7,333 (10,009 ) Comprehensive loss (12,369 ) 7,333 (5,036 ) Basic loss per common share after preferred dividends (in cents) (3.3 ) 1.4 (1.9 ) Diluted loss per common share after preferred dividends (in cents) (3.3 ) 1.4 (1.9 ) Consolidated Statements of Cash Flows Net loss (16,790 ) 7,333 (9,457 ) Depreciation, depletion and amortization 164,026 (9,020 ) 155,006 Deferred income taxes (5,505 ) 1,687 (3,818 ) Cash provided by operating activities 180,793 — 180,793

Note 3 - Business Segments an_2

Note 3 - Business Segments and Sales of Products (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Schedule of Segment Reporting Information, by Segment [Table Text Block]	Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Net sales to unaffiliated customers: Greens Creek $ 84,806 $ 93,494 $ 296,978 $ 232,218 Lucky Friday 29,783 20,812 98,550 35,097 Casa Berardi 56,065 53,554 185,098 149,731 San Sebastian — 9,138 176 23,998 Nevada Operations 22,906 22,705 41,593 61,939 $ 193,560 $ 199,703 $ 622,395 $ 502,983 Income (loss) from operations: Revised Revised Greens Creek $ 26,572 $ 44,477 $ 127,605 $ 76,762 Lucky Friday 6,187 950 24,247 (12,388 ) Casa Berardi (6,233 ) 1,419 4,944 5,330 San Sebastian (1,727 ) 1,946 (4,951 ) 1,766 Nevada Operations (12,077 ) 5,486 (35,558 ) 6,830 Other (21,294 ) (17,763 ) (54,688 ) (40,249 ) $ (8,572 ) $ 36,515 $ 61,599 $ 38,051 September 30, 2021 December 31, 2020 Identifiable assets: Revised Greens Creek $ 607,207 $ 610,360 Lucky Friday 512,742 520,463 Casa Berardi 705,328 727,008 San Sebastian 38,186 42,617 Nevada Operations 477,621 513,309 Other 333,333 286,453 $ 2,674,417 $ 2,700,210
Revenue from External Customers by Products and Services [Table Text Block]	Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Silver $ 61,890 $ 79,684 $ 232,414 $ 179,013 Gold 94,984 98,457 282,471 278,363 Lead 18,082 13,370 56,198 32,244 Zinc 30,273 26,779 89,501 65,540 Less: Smelter and refining charges (11,669 ) (18,587 ) (38,189 ) (52,177 ) Sales of products $ 193,560 $ 199,703 $ 622,395 $ 502,983

Note 4 - Income and Mining Ta_2

Note 4 - Income and Mining Taxes (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	Three Months Ended Nine Months Ended September 30, September 30, 2021 2020 2021 2020 Revised Revised Current: Domestic $ (2,176 ) $ (705 ) $ (7,489 ) $ 1,690 Foreign (1,578 ) (2,286 ) (4,690 ) (6,005 ) Total current income and mining tax provision (3,754 ) (2,991 ) (12,179 ) (7,695 ) Deferred: Domestic 3,213 (2,761 ) 8,226 (1,108 ) Foreign 5,074 571 7,877 1,380 Total deferred income and mining tax benefit 8,287 (2,190 ) 16,103 272 Total income and mining tax benefit (provision) $ 4,533 $ (5,181 ) $ 3,924 $ (7,423 )

Note 5 - Employee Benefit Pla_2

Note 5 - Employee Benefit Plans (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Schedule of Net Benefit Costs [Table Text Block]	Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Service cost $ 1,455 $ 1,334 $ 4,365 $ 4,002 Interest cost 1,248 1,404 3,744 4,212 Expected return on plan assets (2,313 ) (1,872 ) (6,939 ) (5,616 ) Amortization of prior service cost 99 29 297 87 Amortization of net loss 1,125 1,163 3,375 3,489 Net periodic pension cost $ 1,614 $ 2,058 $ 4,842 $ 6,174

Note 6 - (Loss) Income Per Co_2

Note 6 - (Loss) Income Per Common Share (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Revised Revised Numerator Net (loss) income $ (979 ) $ 15,280 $ 23,220 $ (12,562 ) Preferred stock dividends (138 ) (138 ) (414 ) (414 ) Net (loss) income applicable to common shares $ (1,117 ) $ 15,142 $ 22,806 $ (12,976 ) Denominator Basic weighted average common shares 536,966 529,838 535,542 526,098 Dilutive restricted stock units, warrants and deferred shares — 5,950 6,227 — Diluted weighted average common shares 536,966 535,788 541,769 526,098 Basic (loss) income per common share (in cents) (0.2 ) 2.9 4.3 (2.5 ) Diluted (loss) income per common share (in cents) (0.2 ) 2.8 4.2 (2.5 )

Note 7 - Stockholders' Equity (

Note 7 - Stockholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Schedule of Potential Per Share Dividend Amounts Quarterly Price Levels [Table Text Block]	Quarterly Average Realized Silver Price ($ per ounce) Quarterly Silver- Linked Dividend (cents per share) Annualized Silver- Linked Dividend (cents per share) Annualized Minimum Dividend (cents per share) Annualized Dividends per Share: Silver- Linked and Minimum (cents per share) $20 0.25 1 1.5 2.5 $25 1 4 1.5 5.5 $30 1.5 6 1.5 7.5 $35 2.5 10 1.5 11.5 $40 3.5 14 1.5 15.5 $45 4.5 18 1.5 19.5 $50 5.5 22 1.5 23.5

Note 8 - Debt, Credit Facilit_2

Note 8 - Debt, Credit Facility and Leases (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Schedule of Long-term Debt Instruments [Table Text Block]	September 30, 2021 Senior Notes IQ Notes Total Principal $ 475,000 $ 37,862 $ 512,862 Unamortized discount/premium and issuance costs (5,779 ) 629 (5,150 ) Long-term debt balance $ 469,221 $ 38,491 $ 507,712 December 31, 2020 Senior Notes IQ Notes Total Principal $ 475,000 $ 37,886 $ 512,886 Unamortized discount/premium and issuance costs (6,462 ) 818 (5,644 ) Long-term debt balance $ 468,538 $ 38,704 $ 507,242
Schedule of Maturities of Long Term Debt and Finance and Operating Lease Liabilities [Table Text Block]	Twelve-month period ending September 30, Senior Notes IQ Notes Finance Leases Operating Leases 2022 $ 34,438 $ 2,467 $ 6,336 $ 3,166 2023 34,438 2,467 4,590 2,590 2024 34,438 2,467 3,313 1,037 2025 34,438 2,467 855 533 2026 34,438 37,301 — 524 Thereafter 522,349 — — 1,953 Total $ 694,539 $ 47,169 $ 15,094 $ 9,803

Note 9 - Derivative Instrumen_2

Note 9 - Derivative Instruments (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Schedule of Foreign Exchange Contracts, Statement of Financial Position [Table Text Block]	September 30, December 31, Balance sheet line item: 2021 2020 Current derivatives assets $ 2.5 $ 3.5 Non-current derivatives assets 2.2 4.2 Current derivatives liability — — Non-current derivative liability 0.2 —
Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block]	September 30, 2021 Ounces/pounds under contract (in 000 s) Average price per ounce/pound Silver Gold Zinc Lead Silver Gold Zinc Lead (ounces) (ounces) (pounds) (pounds) (ounces) (ounces) (pounds) (pounds) Contracts on provisional sales 2021 settlements 1,190 4 20,867 9,866 $ 23.15 $ 1,776 $ 1.35 $ 1.01 Contracts on forecasted sales 2021 settlements — — 7,771 6,779 N/A N/A $ 1.26 $ 0.94 2022 settlements — — 60,043 63,769 N/A N/A $ 1.28 $ 0.98 2023 settlements — — 76,280 70,327 N/A N/A $ 1.29 $ 1.00 2024 settlements — — 43,762 — N/A N/A $ 1.31 N/A December 31, 2020 Ounces/pounds under contract (in 000 s) Average price per ounce/pound Silver Gold Zinc Lead Silver Gold Zinc Lead (ounces) (ounces) (pounds) (pounds) (ounces) (ounces) (pounds) (pounds) Contracts on provisional sales 2021 settlements 1,282 4 23,314 4,905 $ 25.00 $ 1,858 $ 1.19 $ 0.90 Contracts on forecasted sales 2021 settlements — — 41,577 30,876 N/A N/A $ 1.17 $ 0.88 2022 settlements — — 18,519 — N/A N/A $ 1.28 N/A
Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position, Location [Table Text Block]	September 30, 2021 December 31, 2020 Balance sheet line item: Contracts in an asset position Contracts in a liability position Net asset (liability) Contracts in an asset position Contracts in a liability position Net asset (liability) Current derivatives assets $ 3.1 $ (0.4 ) $ 2.7 $ 0.2 $ (0.2 ) $ — Non-current derivatives assets 7.1 (2.5 ) 4.6 0.5 (0.1 ) 0.4 Current derivatives liabilities 0.3 (4.4 ) (4.1 ) 0.1 (11.8 ) (11.7 ) Non-current derivatives liabilities 1.2 (1.8 ) (0.6 ) — — —

Note 10 - Fair Value Measurem_2

Note 10 - Fair Value Measurement (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	Description Balance at September 30, 2021 Balance at December 31, 2020 Input Hierarchy Level Assets: Cash and cash equivalents: Money market funds and other bank deposits $ 190,904 $ 129,830 Level 1 Current and non-current investments: Equity securities 8,030 19,389 Level 1 Trade accounts receivable: Receivables from provisional concentrate sales 32,821 27,864 Level 2 Restricted cash balances: Certificates of deposit and other deposits 1,053 1,053 Level 1 Derivative contracts - current and non-current derivative assets: Foreign exchange contracts 4,655 7,647 Level 2 Metal forward and put option contracts 7,313 381 Level 2 Total assets $ 244,776 $ 186,164 Liabilities: Derivative contracts - current derivatives liabilities and other non-current liabilities: Foreign exchange contracts $ 200 $ 19 Level 2 Metal forward and put option contracts 4,731 11,737 Level 2 Total liabilities $ 4,931 $ 11,756

Note 1 - Basis of Preparation_2

Note 1 - Basis of Preparation of Financial Statements (Details Textual) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2021USD ($)	Dec. 31, 2020USD ($)oz
Casa Berardi [Member]
Decrease in Expected Gold Production Due to Suspension (Ounce) | oz			11,700
Suspension Costs			$ 1.6
Pandemic Related Procedures Costs		$ 1.9
San Sebastian [Member]
Suspension Costs			1.8
Greens Creek [Member]
Suspension Costs from Quarantining Employee Per Week		$ 1	$ 2.3
Percentage of Increase (Decrease) in Silver Production	(30.00%)

Note 2 - Revision of Previous_3

Note 2 - Revision of Previously Issued Financial Statements for Immaterial Misstatements (Details Textual) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Mar. 31, 2021	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Depreciation, Depletion and Amortization, Total		$ 46,957	$ 39,779	$ 92,861	$ 79,598	$ 139,800	$ 120,076	$ 155,006	$ 196,408	$ 138,681
Revision of Prior Period, Adjustment [Member]
Depreciation, Depletion and Amortization, Total		$ (2,589)	$ (1,851)	$ (5,260)	$ (4,587)		$ (6,835)	$ (9,020)	$ (8,067)	$ (2,224)
Revision of Prior Period, Adjustment [Member] | Hecla Quebec. Inc [Member]
Depreciation, Depletion and Amortization, Total	$ 38,200

Note 2 - Revision of Previous_4

Note 2 - Revision of Previously Issued Financial Statements for Immaterial Misstatements (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						6 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Depreciation, depletion and amortization	$ 45,790	$ 45,732	$ 46,742	$ 37,990	$ 36,687	$ 37,815	$ 92,474	$ 74,502	$ 138,918	$ 112,492	$ 148,110	$ 191,451	$ 131,820
Total cost of sales	158,332	156,052	143,451	141,015	128,245	123,535	299,503	251,780	457,835	392,795	530,773	639,436	483,970
Gross profit	35,228	61,931	67,401	58,688	38,110	13,390	129,332	51,500	164,560	110,188	161,100	33,830	75,031
Income from operations	(8,572)	29,133	41,038	36,515	13,905	(13,046)	70,171	1,536	61,599	38,051	66,978	(46,678)	(35,058)
Income before income and mining taxes	(5,512)	(1,386)	26,194	20,461	(9,371)	(16,229)	24,808	(25,600)	19,296	(5,139)	(1,258)	(113,227)	(29,196)
Income and mining tax benefit (provision)	4,533	4,134	(4,743)	(5,181)	(2,646)	405	(609)	(2,242)	3,924	(7,423)	(8,199)	18,318	2,445
Net income	(979)	2,748	21,451	15,280	(12,017)	(15,824)	24,199	(27,842)	23,220	(12,562)	(9,457)	(94,909)	(26,751)
Income applicable to common shareholders	(1,117)	2,610	21,313	15,142	(12,155)	(15,962)	23,923	(28,118)	22,806	(12,976)	(10,009)	(95,461)	(27,303)
Comprehensive income	$ (7,246)	$ 4,368	$ 23,283	$ 21,430	$ (1,633)	$ (35,159)	$ 27,651	$ (36,793)	$ 20,405	$ (15,363)	$ (5,036)	$ (89,750)	$ (44,558)
Basic income per common share after preferred dividends (in cents) (in dollars per share)	$ (0.002)	$ 0.005	$ 0.04	$ 0.029	$ (0.023)	$ (0.030)	$ 0.043	$ (0.054)	$ 0.043	$ (0.025)	$ (0.019)	$ (0.195)	$ (0.063)
Diluted income per common share after preferred dividends (in cents) (in dollars per share)	$ (0.002)	$ 0.005	$ 0.04	$ 0.028	$ (0.023)	$ (0.030)	$ 0.043	$ (0.054)	$ 0.042	$ (0.025)	$ (0.019)	$ (0.195)	$ (0.063)
Depreciation, Depletion and Amortization, Total			$ 46,957			$ 39,779	$ 92,861	$ 79,598	$ 139,800	$ 120,076	$ 155,006	$ 196,408	$ 138,681
Deferred income taxes			141			(2,762)	(7,745)	(3,949)		(4,578)			8,690
Cash provided by operating activities			37,936			4,927	124,240	42,453	166,982	115,892	180,793	120,866	94,221
Cost of sales and other direct production costs	$ 112,542			$ 103,025	$ 91,558	85,720		177,278	318,917	280,303	382,663	447,985	352,150
Inventories: Concentrates, doré, and stockpiled ore											57,567	30,078
Total current assets	310,280								310,280		284,312	178,838
Properties, plants, equipment and mineral interests, net	2,331,018								2,331,018		2,378,074	2,447,450
Total assets	2,674,417								2,674,417		2,700,210	2,660,774
Deferred tax liability	142,750								142,750		156,091	157,637
Total liabilities	931,442								931,442		986,425	964,240
Accumulated deficit	(362,023)								(362,023)		(368,074)	(349,220)
Total shareholders' equity	1,742,975	$ 1,748,425		1,702,782	1,666,176		1,748,425	1,666,176	1,742,975	1,702,782	1,713,785	1,696,534
Total liabilities and shareholders' equity	2,674,417								2,674,417		2,700,210	2,660,774
Deferred income taxes											(3,818)	9,087
Accrued taxes	8,557								8,557		5,774
Total current liabilities	$ 126,182								$ 126,182		147,210
Previously Reported [Member]
Depreciation, depletion and amortization		48,403	49,331	40,238	39,423	39,666	97,734	79,089		119,327	157,130	199,518	134,044
Total cost of sales		158,723	146,040	146,215	132,276	125,553	304,763	257,829		404,044	546,170	649,867	488,038
Gross profit		59,260	64,812	53,488	34,079	11,372	124,072	45,451		98,939	145,703	23,399	79,099
Income from operations		26,462	38,449	31,315	9,874	(15,064)	64,911	(4,513)		26,802	51,581	(57,109)	(39,126)
Income before income and mining taxes		(4,057)	23,605	15,261	(13,402)	(18,247)	19,548	(31,649)		(16,388)	(16,655)	(123,658)	(33,264)
Income and mining tax benefit (provision)		4,842	(4,634)	(1,633)	(626)	1,062	208	436		(1,197)	(135)	24,101	6,701
Net income		785	18,971	13,628	(14,028)	(17,185)	19,756	(31,213)		(17,585)	(16,790)	(99,557)	(26,563)
Income applicable to common shareholders		647	18,833	13,490	(14,166)	(17,323)	19,480	(31,489)		(17,999)	(17,342)	(100,109)	(27,115)
Comprehensive income		$ 2,405	$ 20,803	$ 19,778	$ (3,644)	$ (36,520)	$ 23,208	$ (40,164)		$ (20,386)	$ (12,369)	$ (94,398)	$ (44,370)
Basic income per common share after preferred dividends (in cents) (in dollars per share)		$ 0.001	$ 0.035	$ 0.026	$ (0.027)	$ (0.033)	$ 0.036	$ (0.060)		$ (0.034)	$ (0.033)	$ (0.204)	$ (0.063)
Diluted income per common share after preferred dividends (in cents) (in dollars per share)		$ 0.001	$ 0.035	$ 0.026	$ (0.027)	$ (0.033)	$ 0.036	$ (0.060)		$ (0.034)	$ (0.033)	$ (0.204)	$ (0.063)
Depreciation, Depletion and Amortization, Total			$ 49,546			$ 41,630	$ 98,121	$ 84,185		$ 126,911	$ 164,026	$ 204,475	$ 140,905
Deferred income taxes			32			(3,252)	(8,562)	(5,165)		(6,390)			6,278
Cash provided by operating activities			37,936			4,927	124,240	42,453		115,892	180,793	120,866	94,221
Cost of sales and other direct production costs				$ 105,977	$ 92,853	85,887		178,740		284,717	389,040	450,349	353,994
Inventories: Concentrates, doré, and stockpiled ore											57,936	30,364
Total current assets											284,681	179,124
Properties, plants, equipment and mineral interests, net											2,345,219	2,423,698
Total assets											2,667,724	2,637,308
Deferred tax liability											132,475	138,282
Total liabilities											965,384	944,885
Accumulated deficit											(379,519)	(353,331)
Total shareholders' equity											1,702,340	1,692,423
Total liabilities and shareholders' equity											2,667,724	2,637,308
Deferred income taxes											(5,505)	5,668
Accrued taxes											8,349
Total current liabilities											149,785
Revision of Prior Period, Adjustment [Member]
Depreciation, depletion and amortization		$ (2,671)	(2,589)	(2,248)	(2,736)	(1,851)	(5,260)	(4,587)		(6,835)	(9,020)	(8,067)	(2,224)
Total cost of sales		(2,671)	(2,589)	(5,200)	(4,031)	(2,018)	(5,260)	(6,049)		(11,249)	(15,397)	(10,431)	(4,068)
Gross profit		2,671	2,589	5,200	4,031	2,018	5,260	6,049		11,249	15,397	10,431	(4,068)
Income from operations		2,671	2,589	5,200	4,031	2,018	5,260	6,049		11,249	15,397	10,431	4,068
Income before income and mining taxes		2,671	2,589	5,200	4,031	2,018	5,260	6,049		11,249	15,397	10,431	4,068
Income and mining tax benefit (provision)		(708)	(109)	(3,548)	(2,020)	(657)	(817)	(2,678)		(6,226)	(8,064)	(5,783)	(4,256)
Net income		1,963	2,480	1,652	2,011	1,361	4,443	3,371		5,023	7,333	4,648	(188)
Income applicable to common shareholders		1,963	2,480	1,652	2,011	1,361	4,443	3,371		5,023	7,333	4,648	(188)
Comprehensive income		$ 1,963	$ 2,480	$ 1,652	$ 2,011	$ 1,361	$ 4,443	$ 3,371		$ 5,023	$ 7,333	$ 4,648	$ (188)
Basic income per common share after preferred dividends (in cents) (in dollars per share)		$ 0.004	$ 0.005	$ 0.003	$ 0.004	$ 0.003	$ 0.007	$ 0.006		$ 0.009	$ 0.014	$ 0.009	$ 0
Diluted income per common share after preferred dividends (in cents) (in dollars per share)		$ 0.004	$ 0.005	$ 0.002	$ 0.004	$ 0.003	$ 0.007	$ 0.006		$ 0.009	$ 0.014	$ 0.009	$ 0
Depreciation, Depletion and Amortization, Total			$ (2,589)			$ (1,851)	$ (5,260)	$ (4,587)		$ (6,835)	$ (9,020)	$ (8,067)	$ (2,224)
Deferred income taxes			109			490	817	1,216		1,812			2,412
Cash provided by operating activities			$ 0			0	$ 0	0		0	0	0	0
Cost of sales and other direct production costs				$ (2,952)	$ (1,295)	$ (167)		$ (1,462)		$ (4,414)	(6,377)	(2,364)	$ (1,844)
Inventories: Concentrates, doré, and stockpiled ore											(369)	(286)
Total current assets											(369)	(286)
Properties, plants, equipment and mineral interests, net											32,855	23,752
Total assets											32,486	23,466
Deferred tax liability											23,616	19,355
Total liabilities											21,041	19,355
Accumulated deficit											11,445	4,111
Total shareholders' equity											11,445	4,111
Total liabilities and shareholders' equity											32,486	23,466
Deferred income taxes											1,687	$ 3,419
Accrued taxes											(2,575)
Total current liabilities											$ (2,575)

Note 3 - Business Segments an_3

Note 3 - Business Segments and Sales of Products (Details Textual) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021USD ($)	Sep. 30, 2020USD ($)	Sep. 30, 2021USD ($)	Sep. 30, 2020USD ($)
Number of Reportable Segments			5
Derivative, Gain (Loss) on Derivative, Net, Total			$ 13,937	$ (4,483)
Financially-settled Forward Contracts [Member]
Derivative, Gain (Loss) on Derivative, Net, Total	$ 5,000	$ 9,600	$ 4,500	$ 12,900

Note 3 - Business Segments an_4

Note 3 - Business Segments and Sales of Products - Information About Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended						6 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net sales	$ 193,560			$ 199,703					$ 622,395	$ 502,983
Income (loss) from operations	(8,572)	$ 29,133	$ 41,038	36,515	$ 13,905	$ (13,046)	$ 70,171	$ 1,536	61,599	38,051	$ 66,978	$ (46,678)	$ (35,058)
Total assets	2,674,417								2,674,417		2,700,210	$ 2,660,774
Greens Creek [Member]
Net sales	84,806			93,494					296,978	232,218
Income (loss) from operations	26,572			44,477					127,605	76,762
Total assets	607,207								607,207		610,360
Lucky Friday [Member]
Net sales	29,783			20,812					98,550	35,097
Income (loss) from operations	6,187			950					24,247	(12,388)
Total assets	512,742								512,742		520,463
Casa Berardi [Member]
Net sales	56,065			53,554					185,098	149,731
Income (loss) from operations	(6,233)			1,419					4,944	5,330
Total assets	705,328								705,328		727,008
San Sebastian [Member]
Net sales	0			9,138					176	23,998
Income (loss) from operations	(1,727)			1,946					(4,951)	1,766
Total assets	38,186								38,186		42,617
Nevada Operations [Member]
Net sales	22,906			22,705					41,593	61,939
Income (loss) from operations	(12,077)			5,486					(35,558)	6,830
Total assets	477,621								477,621		513,309
Other Segments [Member]
Income (loss) from operations	(21,294)			$ (17,763)					(54,688)	$ (40,249)
Total assets	$ 333,333								$ 333,333		$ 286,453

Note 3 - Business Segments an_5

Note 3 - Business Segments and Sales of Products - Sales of Products (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Sales of products	$ 193,560	$ 199,703	$ 622,395	$ 502,983
Less: Smelter and refining charges	(11,669)	(18,587)	(38,189)	(52,177)
Silver Contracts [Member]
Sales of products	61,890	79,684	232,414	179,013
Gold [Member]
Sales of products	94,984	98,457	282,471	278,363
Lead [Member]
Sales of products	18,082	13,370	56,198	32,244
Zinc [Member]
Sales of products	$ 30,273	$ 26,779	$ 89,501	$ 65,540

Note 4 - Income and Mining Ta_3

Note 4 - Income and Mining Taxes (Details Textual) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2021
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount	$ 1.1	$ 9.7

Note 4 - Income and Mining Ta_4

Note 4 - Income and Mining Taxes - Major Components of Income Tax Provision (Benefit) (Details) - USD ($) $ in Thousands	3 Months Ended						6 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Domestic	$ (2,176)			$ (705)					$ (7,489)	$ 1,690
Foreign	(1,578)			(2,286)					(4,690)	(6,005)
Total current income and mining tax provision	(3,754)			(2,991)					(12,179)	(7,695)
Domestic	3,213			(2,761)					8,226	(1,108)
Foreign	5,074			571					7,877	1,380
Total deferred income and mining tax benefit	8,287			(2,190)					16,103	272
Total income and mining tax benefit (provision)	$ 4,533	$ 4,134	$ (4,743)	$ (5,181)	$ (2,646)	$ 405	$ (609)	$ (2,242)	$ 3,924	$ (7,423)	$ (8,199)	$ 18,318	$ 2,445

Note 5 - Employee Benefit Pla_3

Note 5 - Employee Benefit Plans (Details Textual) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		9 Months Ended
	Jan. 31, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Jan. 01, 2021
Supplemental Employee Retirement Plan [Member]
Defined Benefit Plan, Plan Assets, Contributions by Employer	$ 16.8
Defined Benefit Plan, Expected Future Employer Contributions, Current Fiscal Year		$ 5.5		$ 5.5		$ 0.8
Other Nonoperating Income (Expense) [Member]
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component		$ 0.2	$ 0.7	$ 0.5	$ 2.2

Note 5 - Employee Benefit Pla_4

Note 5 - Employee Benefit Plans - Net Periodic Pension Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Service cost	$ 1,455	$ 1,334	$ 4,365	$ 4,002
Interest cost	1,248	1,404	3,744	4,212
Expected return on plan assets	(2,313)	(1,872)	(6,939)	(5,616)
Amortization of prior service cost	99	29	297	87
Amortization of net loss	1,125	1,163	3,375	3,489
Net periodic pension cost	$ 1,614	$ 2,058	$ 4,842	$ 6,174

Note 6 - (Loss) Income Per Co_3

Note 6 - (Loss) Income Per Common Share (Details Textual) - shares	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2021
Incremental Common Shares Attributable to Share-based Payment Arrangements, Total (in shares)	2,499,956	2,496,622
Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants (in shares)	1,454,246	1,578,293
Incremental Common Shares Attributable to Dilutive Effect of Deferred Shares (in shares)	1,996,112	2,152,578

Note 6 - (Loss) Income Per Co_4

Note 6 - (Loss) Income Per Common Share - Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended						6 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net income (loss)	$ (979)	$ 2,748	$ 21,451	$ 15,280	$ (12,017)	$ (15,824)	$ 24,199	$ (27,842)	$ 23,220	$ (12,562)	$ (9,457)	$ (94,909)	$ (26,751)
Series B Preferred Stock dividends declared	(138)			(138)					(414)	(414)
Net (loss) income applicable to common shares	$ (1,117)	$ 2,610	$ 21,313	$ 15,142	$ (12,155)	$ (15,962)	$ 23,923	$ (28,118)	$ 22,806	$ (12,976)	$ (10,009)	$ (95,461)	$ (27,303)
Weighted average number of common shares outstanding - basic (in shares)	536,966			529,838					535,542	526,098
Dilutive restricted stock units, warrants and deferred shares (in shares)	0			5,950					6,227	0
Diluted weighted average common shares (in shares)	536,966			535,788					541,769	526,098
Basic (loss) income per common share after preferred dividends (in cents) (in dollars per share)	$ (0.002)	$ 0.005	$ 0.04	$ 0.029	$ (0.023)	$ (0.030)	$ 0.043	$ (0.054)	$ 0.043	$ (0.025)	$ (0.019)	$ (0.195)	$ (0.063)
Diluted (loss) income per common share after preferred dividends (in cents) (in dollars per share)	$ (0.002)	$ 0.005	$ 0.04	$ 0.028	$ (0.023)	$ (0.030)	$ 0.043	$ (0.054)	$ 0.042	$ (0.025)	$ (0.019)	$ (0.195)	$ (0.063)

Note 7 - Stockholders' Equity_2

Note 7 - Stockholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Millions	Nov. 03, 2021	Aug. 04, 2021	May 05, 2021	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	May 31, 2021	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Dec. 31, 2021	Sep. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Feb. 18, 2021
Share-based Payment Arrangement, Expense									$ 1.5			$ 2.8			$ 4.8	$ 5.2
Share-based Compensation Arrangement by Share-based Payment Award, Measurement Period Used to Value Performance-based Awards (Year)						3 years
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture, Total (in shares)																2,800,000
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation (in shares)															574,251	1,183,773
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation															$ 4.5	$ 2.7
Shares Withheld for Tax Withholding Obligation, Price Per Share (in dollars per share)					$ 7.88				$ 7.88			$ 2.32		$ 7.88	$ 7.88	$ 2.32
Silver-linked Dividend, Per Share, Increase (in dollars per share)			$ 0.01
Average Realized Silver Price Per Ounce (in dollars per share)					$ 25		$ 20		23.97	$ 27.14	$ 25.66
Common Stock, Dividends, Per Share, Declared (in dollars per share)									$ 0.01125			$ 0.0025			$ 0.03125	$ 0.00750
Dividends, Total					$ 6	$ 6
At-the-market Offering [Member]
Equity Distribution Agreement, Maximum Number of Shares to be Sold (in shares)																				60,000,000
Stock Issued During Period, Shares, New Issues (in shares)														0
Quarterly Dividends [Member]
Common Stock, Dividends, Per Share, Declared (in dollars per share)		$ 1.125	0.01125
Quarterly Dividends, Common Stock, Cash, Silver Price-linked Component (in dollars per share)		0.00375	0.375
Quarterly Dividends, Common Stock, Cash, Minimum Annual Dividend Component (in dollars per share)		$ 0.75	$ 0.75
Quarterly Dividends [Member] | Subsequent Event [Member]
Common Stock, Dividends, Per Share, Declared (in dollars per share)	$ 0.625
Quarterly Dividends, Common Stock, Cash, Silver Price-linked Component (in dollars per share)	0.375
Quarterly Dividends, Common Stock, Cash, Minimum Annual Dividend Component (in dollars per share)	$ 0.25
Forecast [Member]
Dividends, Total				$ 3.4
Restricted Stock Units, One [Member] | Share-based Payment Arrangement, Employee [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)						552,660
Restricted Stock Units, One [Member] | Share-based Payment Arrangement, Employee [Member] | Share-based Payment Arrangement, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)						177,872
Restricted Stock Units, One [Member] | Share-based Payment Arrangement, Employee [Member] | Share-based Payment Arrangement, Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)						177,878
Restricted Stock Units, One [Member] | Share-based Payment Arrangement, Employee [Member] | Share-based Payment Arrangement, Tranche Three [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)						196,910
Restricted Stock Units, Two [Member] | Share-based Payment Arrangement, Employee [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)						47,590
Restricted Stock Units, Two [Member] | Share-based Payment Arrangement, Employee [Member] | Share-based Payment Arrangement, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage						50.00%
Restricted Stock Units, Two [Member] | Share-based Payment Arrangement, Employee [Member] | Share-based Payment Arrangement, Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage						1.00%
Restricted Stock Units, Three [Member] | Share-based Payment Arrangement, Employee [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)						29,187
Restricted Stock Units (RSUs) [Member]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total						$ 5				$ 5
Restricted Stock Units (RSUs) [Member] | Forecast [Member]
Share-based Payment Arrangement, Expense													$ 1.7				$ 0.2	$ 0.9	$ 2.2
Performance Shares [Member]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Month)						30 months
Performance Shares [Member] | Forecast [Member] | Minimum [Member] | June 2019 [Member]
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture, Total (in shares)								0
Performance Shares [Member] | Forecast [Member] | Maximum [Member] | June 2019 [Member]
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture, Total (in shares)								1,200,000

Note 7 - Stockholders' Equity -

Note 7 - Stockholders' Equity - Common Stock Dividend Policy (Details)	9 Months Ended
	Sep. 30, 2021$ / shares
Quarterly Average Realized Price, Level 1 [Member]
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 2 [Member]
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 3 [Member]
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 4 [Member]
Quarterly dividend per share (in dollars per share)	0.025
Annual dividend per share (in dollars per share)	0.10
Minimum annual component per share (in dollars per share)	0.015
Annualized dividends (in dollars per share)	0.115
Quarterly Average Realized Price, Level 5 [Member]
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 6 [Member]
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 7 [Member]
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 8 - Debt, Credit Facilit_3

Note 8 - Debt, Credit Facility and Leases (Details Textual) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020	Jul. 31, 2018
Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity			$ 250,000
Long-term Line of Credit, Total	$ 0	$ 0
Letter of Credit [Member]
Letter of Credit Outstanding, Fronting Fee			0.20%
Letters of Credit Outstanding, Amount	$ 21,000
Letter of Credit [Member] | Minimum [Member]
Letter of Credit, Participation Fee, Percent			2.25%
Letter of Credit [Member] | Maximum [Member]
Letter of Credit, Participation Fee, Percent			4.00%
Senior Notes [Member] | The 2028 Senior Notes [Member]
Debt Instrument, Interest Rate, Stated Percentage	7.25%	7.25%

Note 8 - Debt, Credit Facilit_4

Note 8 - Debt, Credit Facility and Leases - Debt Summary (Details) - Senior Notes [Member] - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Principal	$ 512,862	$ 512,886
Unamortized discount/premium and issuance costs	(5,150)	(5,644)
Long-term debt balance	507,712	507,242
The 2028 Senior Notes [Member]
Principal	475,000	475,000
Unamortized discount/premium and issuance costs	(5,779)	(6,462)
Long-term debt balance	469,221	468,538
IQ Notes [Member]
Principal	37,862	37,886
Unamortized discount/premium and issuance costs	629	818
Long-term debt balance	$ 38,491	$ 38,704

Note 8 - Debt, Credit Facilit_5

Note 8 - Debt, Credit Facility and Leases - Future Payments of Long-term Debt and Finance and Operating Leases (Details) $ in Thousands	Sep. 30, 2021USD ($)
2022, finance leases	$ 6,336
2022, operating leases	3,166
2023, finance leases	4,590
2023, operating leases	2,590
2024, finance leases	3,313
2024, operating leases	1,037
2025, finance leases	855
2025, operating leases	533
2026, finance leases	0
2026, operating leases	524
Thereafter, finance leases	0
Thereafter, operating leases	1,953
Total, finance leases	15,094
Total, operating leases	9,803
Senior Notes [Member] | The 2028 Senior Notes [Member]
2022	34,438
2023	34,438
2024	34,438
2025	34,438
2026	34,438
Thereafter	522,349
Total	694,539
Senior Notes [Member] | IQ Notes [Member]
2022	2,467
2023	2,467
2024	2,467
2025	2,467
2026	37,301
Thereafter	0
Total	$ 47,169

Note 9 - Derivative Instrumen_3

Note 9 - Derivative Instruments (Details Textual) $ in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021USD ($)	Sep. 30, 2020USD ($)	Sep. 30, 2021USD ($)	Sep. 30, 2020USD ($)	Sep. 30, 2021CAD ($)
Maximum Allocation of Forecasted CAD-demonimated Operating Costs	75.00%		75.00%		75.00%
Forecasted CAD-denominated Operating Costs to be Hedged, Term (Year)			5 years
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax	$ 4,800		$ 4,800
Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net			3,500
Gain (Loss) on Components Excluded from Assessment of Foreign Currency Cash Flow Hedge Effectiveness			0
Derivative, Gain (Loss) on Derivative, Net, Total			13,937	$ (4,483)
Other Comprehensive Income (Loss) [Member]
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months	$ 2,700		$ 2,700
Foreign Exchange Contract [Member] | Casa Berardi [Member] | Designated as Hedging Instrument [Member]
Derivative, Number of Instruments Held, Total	73		73		73
Derivative, Notional Amount	$ 187,700		$ 187,700		$ 245.6
Foreign Exchange Contract [Member] | Casa Berardi [Member] | Designated as Hedging Instrument [Member] | Minimum [Member]
Derivative, Forward Exchange Rate	1.2702		1.2702		1.2702
Foreign Exchange Contract [Member] | Casa Berardi [Member] | Designated as Hedging Instrument [Member] | Maximum [Member]
Derivative, Forward Exchange Rate	1.3753		1.3753		1.3753
Unsettled Concentrate Sales Contracts [Member]
Derivative, Gain (Loss) on Derivative, Net, Total	$ 5,000	$ 9,600	$ 4,500	12,900
Forecasted Future Concentrate Contracts [Member]
Derivative, Gain (Loss) on Derivative, Net, Total	12,100	$ 6,700	4,700	$ 12,800
Commodity Contract [Member]
Derivative Liability, Fair Value, Amount Not Offset Against Collateral, Total	9,300		9,300
Derivative, Fair Value, Obligations Under the Agreements	$ 9,300		$ 9,300

Note 9 - Derivative Instrumen_4

Note 9 - Derivative Instruments - Foreign Currency (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current derivatives assets	$ 5,220	$ 3,470
Non-current derivatives assets	6,748	4,558
Current derivatives liability	4,179	11,737
Non-current derivative liability	752	18
Foreign Exchange Contract [Member]
Current derivatives assets	2,500	3,500
Non-current derivatives assets	2,200	4,200
Current derivatives liability	0	0
Non-current derivative liability	$ 200	$ 0

Note 9 - Derivative Instrumen_5

Note 9 - Derivative Instruments - Summary of Forward Sales Contracts (Details) oz in Thousands, lb in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2021ozlb$ / oz$ / lb	Dec. 31, 2020ozlb$ / oz$ / lb
Silver 2021 Settlements for Provisional Sales [Member]
Ounces/pounds under contract (Ounce) | oz	1,190	1,282
Average price per ounce/pound (in USD per Ounce) | $ / oz	23.15	25
Gold 2021 Settlements for Provisional Sales [Member]
Ounces/pounds under contract (Ounce) | oz	4	4
Average price per ounce/pound (in USD per Ounce) | $ / oz	1,776	1,858
Zinc 2021 Settlements for Provisional Sales [Member]
Ounces/pounds under contract (Ounce) | lb	20,867	23,314
Average price per ounce/pound (in USD per Ounce) | $ / lb	1.35	1.19
Lead 2021 Settlements for Provisional Sales [Member]
Ounces/pounds under contract (Ounce) | lb	9,866	4,905
Average price per ounce/pound (in USD per Ounce) | $ / lb	1.01	0.90
Zinc 2021 Settlements for Forecasted Sales [Member]
Ounces/pounds under contract (Ounce) | lb	7,771	41,577
Average price per ounce/pound (in USD per Ounce) | $ / lb	1.26	1.17
Lead 2021 Settlements for Forecasted Sales [Member]
Ounces/pounds under contract (Ounce) | lb	6,779	30,876
Average price per ounce/pound (in USD per Ounce) | $ / lb	0.94	0.88
Zinc 2022 Settlements for Forecasted Sales [Member]
Ounces/pounds under contract (Ounce) | lb	60,043	18,519
Average price per ounce/pound (in USD per Ounce) | $ / lb	1.28	1.28
Lead 2022 Settlements for Forecasted Sales [Member]
Ounces/pounds under contract (Ounce) | lb	63,769
Average price per ounce/pound (in USD per Ounce) | $ / lb	0.98
Zinc 2023 Settlements for Provisional Sales [Member]
Ounces/pounds under contract (Ounce) | lb	76,280
Average price per ounce/pound (in USD per Ounce) | $ / lb	1.29
Lead 2023 Settlements for Provisional Sales [Member]
Ounces/pounds under contract (Ounce) | lb	70,327
Average price per ounce/pound (in USD per Ounce) | $ / lb	1
Zinc 2024 Settlements for Forecasted Sales [Member]
Ounces/pounds under contract (Ounce) | lb	43,762
Average price per ounce/pound (in USD per Ounce) | $ / lb	1.31

Note 9 - Derivative Instrumen_6

Note 9 - Derivative Instruments - Fair Value of Forward and Put Option Contracts (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Contracts in asset position	$ 5,220	$ 3,470
Contracts in liability position	(4,179)	(11,737)
Contracts in asset position	6,748	4,558
Contracts in liability position	(752)	(18)
Forward and Put Option Contracts [Member] | Current Derivatives Assets [Member]
Contracts in asset position	3,100	200
Contracts in liability position	(400)	(200)
Net asset (liability)	2,700	0
Forward and Put Option Contracts [Member] | Noncurrent Derivative Assets [Member]
Net asset (liability)	4,600	400
Contracts in asset position	7,100	500
Contracts in liability position	(2,500)	(100)
Forward and Put Option Contracts [Member] | Current Derivative Liabilities [Member]
Contracts in asset position	300	100
Contracts in liability position	(4,400)	(11,800)
Net asset (liability)	(4,100)	(11,700)
Forward and Put Option Contracts [Member] | Other Noncurrent Liabilities [Member]
Net asset (liability)	(600)	0
Contracts in asset position	1,200	0
Contracts in liability position	$ (1,800)	$ 0

Note 10 - Fair Value Measurem_3

Note 10 - Fair Value Measurement (Details Textual) - Senior Notes [Member] $ in Millions	Sep. 30, 2021USD ($)
Notes Payable, Total	$ 469.2
Fair Value, Inputs, Level 1 [Member]
Notes Payable, Fair Value Disclosure	$ 513.2

Note 10 - Fair Value Measurem_4

Note 10 - Fair Value Measurement - Assets and Liabilities Accounted for at Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Receivables from provisional concentrate sales	$ 10,152	$ 11,329
Fair Value, Recurring [Member]
Total assets	244,776	186,164
Total liabilities	4,931	11,756
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member]
Money market funds and other bank deposits	190,904	129,830
Equity securities	8,030	19,389
Certificates of deposit and other deposits	1,053	1,053
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member]
Receivables from provisional concentrate sales	32,821	27,864
Foreign exchange contracts	4,655	7,647
Metal forward and put option contracts	7,313	381
Foreign exchange contracts	200	19
Metal forward and put option contracts	$ 4,731	$ 11,737

Note 11 - Commitments, Contin_2

Note 11 - Commitments, Contingencies and Obligations (Details Textual) - USD ($) $ in Thousands	1 Months Ended				3 Months Ended			9 Months Ended		12 Months Ended
	Jul. 31, 2018	Dec. 31, 2014	Aug. 31, 2012	Jun. 30, 2011	Sep. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Environmental Remediation Expense					$ 7,564		$ 1,254	$ 12,297	$ 2,807
Contractual Obligation, Total					700			700
Finance Lease, Liability, Payment, Due, Total					15,094			15,094
Lessee, Operating Lease, Liability, to be Paid, Total					9,803			9,803
Performance Obligation Commitments [Member]
Surety Bonds					182,600			182,600
Letters of Credit Outstanding, Amount					21,000			21,000
Lucky Friday [Member]
Open Purchase Orders					8,500			8,500
Casa Berardi [Member]
Open Purchase Orders					500			500
Greens Creek [Member]
Open Purchase Orders					5,500			5,500
Nevada Operations [Member]
Open Purchase Orders					$ 4,700			$ 4,700
Johnny M Mine Area near San Mateo, New Mexico [Member]
Payment Of Response Costs		$ 1,100	$ 1,100
Estimated Response Costs	$ 9,600					$ 9,000				$ 6,100
Environmental Remediation Expense						$ 9,000
Carpenter Snow Creek Superfund Site, Cascade County, Montana [Member]
Estimated Response Costs				$ 4,500
Estimated Future Response Cost				$ 100,000