$HL
HECLA MINING CO/DE/ Stock $hl

$hl Overview Financials Valuation SEC Filings Company Website

2020 Q4 Form 10-Q Financial Statement

#000143774920023040 Filed on November 06, 2020

Income Statement

Concept	2020 Q4	2020 Q3	2020 Q1
Revenue	$188.9M	$199.7M	$136.9M
YoY Change	-16.01%	23.63%	-10.28%
Cost Of Revenue	$142.1M	$141.0M	$123.5M
YoY Change	-28.81%	-3.84%	-17.19%
Gross Profit	$46.80M	$58.69M	$13.39M
YoY Change	84.98%	294.41%	288.79%
Gross Profit Margin	24.78%	29.39%	9.78%
Selling, General & Admin	$7.900M	$11.70M	$8.900M
YoY Change	-12.22%	46.25%	-11.0%
% of Gross Profit	16.88%	19.94%	66.47%
Research & Development	$8.500M	$0.00	$0.00
YoY Change	193.1%	-100.0%	-100.0%
% of Gross Profit	18.16%	0.0%	0.0%
Depreciation & Amortization	$37.10M	$42.70M	$39.78M
YoY Change	-39.67%	-18.2%	-1.21%
% of Gross Profit	79.27%	72.76%	297.08%
Operating Expenses	$20.70M	$22.17M	$26.44M
YoY Change	43.75%	10.9%	35.1%
Operating Profit	$26.10M	$36.52M	-$13.05M
YoY Change	139.45%	-814.16%	-19.09%
Interest Expense	-$25.60M	$10.78M	$16.31M
YoY Change	29.95%	-8.47%	52.94%
% of Operating Profit	-98.08%	29.52%
Other Income/Expense, Net	-$100.0K	-$16.05M	-$3.183M
YoY Change	-90.0%	0.23%	-80.85%
Pretax Income	-$300.0K	$20.46M	-$16.23M
YoY Change	-97.52%	-196.83%	-50.44%
Income Tax	-$1.100M	$5.181M	-$405.0K
% Of Pretax Income		25.32%
Net Earnings	$800.0K	$15.28M	-$15.82M
YoY Change	-110.0%	-178.29%	-38.03%
Net Earnings / Revenue	0.42%	7.65%	-11.56%
Basic Earnings Per Share		$0.03	-$0.03
Diluted Earnings Per Share	$1.507K	$0.03	-$0.03
COMMON SHARES
Basic Shares Outstanding	531.0M	529.8M	523.2M
Diluted Shares Outstanding		535.8M	523.2M

Balance Sheet

Concept	2020 Q4	2020 Q3	2020 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments	$129.8M	$98.70M	$215.7M
YoY Change	107.68%	199.09%	1727.97%
Cash & Equivalents	$129.8M	$98.67M	$215.7M
Short-Term Investments
Other Short-Term Assets	$19.11M	$7.301M	$18.79M
YoY Change	58.78%	-29.8%	128.11%
Inventory	$57.57M	$87.60M	$75.10M
Prepaid Expenses
Receivables	$27.90M	$28.50M	$6.100M
Other Receivables	$11.30M	$12.90M	$21.70M
Total Short-Term Assets	$284.3M	$235.2M	$342.5M
YoY Change	58.98%	31.43%	137.7%
LONG-TERM ASSETS
Property, Plant & Equipment	$2.378B	$2.342B	$2.393B
YoY Change	-2.83%	-4.62%	-4.62%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$15.10M	$17.40M	$4.900M
YoY Change	143.55%	138.36%	-27.94%
Other Assets	$8.083M	$4.205M	$4.507M
YoY Change	10.18%	-55.04%	-55.02%
Total Long-Term Assets	$2.416B	$2.380B	$2.273B
YoY Change	-2.66%	-4.58%	-10.9%
TOTAL ASSETS
Total Short-Term Assets	$284.3M	$235.2M	$342.5M
Total Long-Term Assets	$2.416B	$2.380B	$2.273B
Total Assets	$2.700B	$2.615B	$2.615B
YoY Change	1.48%	-2.17%	-2.95%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$68.50M	$55.30M	$49.40M
YoY Change	18.72%	-4.49%	-19.94%
Accrued Expenses	$54.60M	$43.60M	$48.90M
YoY Change	27.27%	-15.34%	-22.99%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$6.500M	$6.200M	$5.400M
YoY Change	20.37%	8.77%	-8.47%
Total Short-Term Liabilities	$147.2M	$125.4M	$117.2M
YoY Change	25.85%	-14.02%	-20.19%
LONG-TERM LIABILITIES
Long-Term Debt	$516.5M	$503.7M	$684.8M
YoY Change	2.33%	-13.84%	28.31%
Other Long-Term Liabilities	$4.346M	$6.153M	$14.03M
YoY Change	-36.61%	-24.16%	106.58%
Total Long-Term Liabilities	$4.346M	$6.153M	$14.03M
YoY Change	-99.15%	-98.96%	-97.4%
TOTAL LIABILITIES
Total Short-Term Liabilities	$147.2M	$125.4M	$117.2M
Total Long-Term Liabilities	$4.346M	$6.153M	$14.03M
Total Liabilities	$986.4M	$921.5M	$1.107B
YoY Change	2.3%	-12.78%	8.13%
SHAREHOLDERS EQUITY
Retained Earnings	-$368.1M	-$375.5M	-$372.0M
YoY Change	5.4%	9.18%	35.17%
Common Stock	$134.6M	$134.4M	$132.4M
YoY Change	1.77%	8.29%	8.46%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$23.50M	$23.50M	$22.97M
YoY Change	2.3%	2.27%	10.76%
Treasury Stock Shares	$6.821M	$6.821M	$6.287M
Shareholders Equity	$1.714B	$1.703B	$1.645B
YoY Change
Total Liabilities & Shareholders Equity	$2.700B	$2.615B	$2.764B
YoY Change	1.48%	-2.17%	2.58%

Cashflow Statement

Concept	2020 Q4	2020 Q3	2020 Q1
OPERATING ACTIVITIES
Net Income	$800.0K	$15.28M	-$15.82M
YoY Change	-110.0%	-178.29%	-38.03%
Depreciation, Depletion And Amortization	$37.10M	$42.70M	$39.78M
YoY Change	-39.67%	-18.2%	-1.21%
Cash From Operating Activities	$64.90M	$73.40M	$4.927M
YoY Change	13.26%	33.7%	-75.4%
INVESTING ACTIVITIES
Capital Expenditures	-$36.60M	-$23.70M	$19.87M
YoY Change	51.87%	-9.2%	-39.92%
Acquisitions
YoY Change
Other Investing Activities	-$500.0K	-$1.000M	-$154.0K
YoY Change	-600.0%	-162.5%	15300.0%
Cash From Investing Activities	-$37.20M	-$24.60M	-$19.72M
YoY Change	55.0%	0.0%	-40.38%
FINANCING ACTIVITIES
Cash Dividend Paid			$1.442M
YoY Change			7.05%
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	2.600M	-26.00M	$169.8M
YoY Change	-159.09%	293.94%	-6515.41%
NET CHANGE
Cash From Operating Activities	64.90M	73.40M	$4.927M
Cash From Investing Activities	-37.20M	-24.60M	-$19.72M
Cash From Financing Activities	2.600M	-26.00M	$169.8M
Net Change In Cash	30.30M	22.80M	$153.3M
YoY Change	4.84%	-3.8%	-1083.14%
FREE CASH FLOW
Cash From Operating Activities	$64.90M	$73.40M	$4.927M
Capital Expenditures	-$36.60M	-$23.70M	$19.87M
Free Cash Flow	$101.5M	$97.10M	-$14.94M
YoY Change	24.69%	19.88%	14.58%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2020Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	531022302
CY2020Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2019Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000
CY2019Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000
CY2020Q3	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.25
CY2019Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.25
CY2020Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	157816
CY2019Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	157816
CY2020Q3	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	157816
CY2019Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	157816
CY2020Q3	us-gaap	Preferred Stock Liquidation Preference Value PreferredStockLiquidationPreferenceValue	7891000	USD
CY2019Q4	us-gaap	Preferred Stock Liquidation Preference Value PreferredStockLiquidationPreferenceValue	7891000	USD
CY2020Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.25
CY2019Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.25
CY2020Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	750000000
CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	750000000
CY2020Q3	hl	Common Stock Shares Issued Less Treasury Shares CommonStockSharesIssuedLessTreasuryShares	537665291
CY2019Q4	hl	Common Stock Shares Issued Less Treasury Shares CommonStockSharesIssuedLessTreasuryShares	529182994
CY2020Q3	us-gaap	Treasury Stock Shares TreasuryStockShares	6821044
CY2019Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	6287271
CY2020Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.0025
CY2020Q3	us-gaap	Preferred Stock Dividends Per Share Declared PreferredStockDividendsPerShareDeclared	0.875
CY2020Q3	hl	Stock Issued During Period Shares401k Match StockIssuedDuringPeriodShares401kMatch	439000
CY2020Q3	us-gaap	Stock Issued During Period Shares Employee Benefit Plan StockIssuedDuringPeriodSharesEmployeeBenefitPlan	2058000
CY2019Q3	hl	Restricted Stock Unit Distributions Shares RestrictedStockUnitDistributionsShares	1164000
CY2019Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.0025
CY2019Q3	us-gaap	Preferred Stock Dividends Per Share Declared PreferredStockDividendsPerShareDeclared	0.875
CY2019Q3	hl	Stock Issued During Period Shares401k Match StockIssuedDuringPeriodShares401kMatch	562000
	hl	Restricted Stock Unit Distributions Shares RestrictedStockUnitDistributionsShares	1702000
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.0075
	us-gaap	Preferred Stock Dividends Per Share Declared PreferredStockDividendsPerShareDeclared	2.625
	hl	Stock Issued During Period Shares401k Match StockIssuedDuringPeriodShares401kMatch	1396000
	us-gaap	Stock Issued During Period Shares Treasury Stock Reissued StockIssuedDuringPeriodSharesTreasuryStockReissued	650000
	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	2800000
	us-gaap	Stock Issued During Period Shares Employee Benefit Plan StockIssuedDuringPeriodSharesEmployeeBenefitPlan	2225000
	hl	Restricted Stock Unit Distributions Shares RestrictedStockUnitDistributionsShares	1164000
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.0075
	us-gaap	Preferred Stock Dividends Per Share Declared PreferredStockDividendsPerShareDeclared	2.625
	hl	Stock Issued During Period Shares401k Match StockIssuedDuringPeriodShares401kMatch	1307000
	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	3579380
	us-gaap	Stock Issued During Period Shares Employee Benefit Plan StockIssuedDuringPeriodSharesEmployeeBenefitPlan	2384000
	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	253000
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	5	pure
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	0	USD
	hl	Forecasted Cad Denominated Operating Costs To Be Hedged Term ForecastedCADDenominatedOperatingCostsToBeHedgedTerm	P5Y
	hl	Forecasted Cad Denominated Operating Costs To Be Hedged Term ForecastedCADDenominatedOperatingCostsToBeHedgedTerm	P5Y
CY2020Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	98669000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	62452000	USD
CY2020Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	28464000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	11952000	USD
CY2020Q3	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	6343000	USD
CY2019Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	20048000	USD
CY2020Q3	us-gaap	Other Receivables OtherReceivables	6642000	USD
CY2019Q4	us-gaap	Other Receivables OtherReceivables	6421000	USD
CY2020Q3	us-gaap	Inventory Finished Goods InventoryFinishedGoods	50019000	USD
CY2019Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	30364000	USD
CY2020Q3	us-gaap	Other Inventory Supplies OtherInventorySupplies	37611000	USD
CY2019Q4	us-gaap	Other Inventory Supplies OtherInventorySupplies	35849000	USD
CY2020Q3	us-gaap	Prepaid Taxes PrepaidTaxes	107000	USD
CY2019Q4	us-gaap	Prepaid Taxes PrepaidTaxes	107000	USD
CY2020Q3	us-gaap	Other Assets Current OtherAssetsCurrent	7301000	USD
CY2019Q4	us-gaap	Other Assets Current OtherAssetsCurrent	11931000	USD
CY2020Q3	us-gaap	Assets Current AssetsCurrent	235156000	USD
CY2019Q4	us-gaap	Assets Current AssetsCurrent	179124000	USD
CY2020Q3	us-gaap	Long Term Investments LongTermInvestments	17362000	USD
CY2019Q4	us-gaap	Long Term Investments LongTermInvestments	6207000	USD
CY2020Q3	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	1053000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	1025000	USD
CY2020Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	2342038000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	2423698000	USD
CY2020Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	11928000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	16381000	USD
CY2020Q3	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	3408000	USD
CY2019Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	3537000	USD
CY2020Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	4205000	USD
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	7336000	USD
CY2020Q3	us-gaap	Assets Assets	2615150000	USD
CY2019Q4	us-gaap	Assets Assets	2637308000	USD
CY2020Q3	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	55315000	USD
CY2019Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	57716000	USD
CY2020Q3	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	29201000	USD
CY2019Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	26916000	USD
CY2020Q3	us-gaap	Taxes Payable Current TaxesPayableCurrent	7890000	USD
CY2019Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	4776000	USD
CY2020Q3	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	6187000	USD
CY2019Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	5429000	USD
CY2020Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	3590000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	5580000	USD
CY2020Q3	us-gaap	Accrued Reclamation Costs Current AccruedReclamationCostsCurrent	5892000	USD
CY2019Q4	us-gaap	Accrued Reclamation Costs Current AccruedReclamationCostsCurrent	4581000	USD
CY2020Q3	us-gaap	Interest Payable Current InterestPayableCurrent	4935000	USD
CY2019Q4	us-gaap	Interest Payable Current InterestPayableCurrent	5804000	USD
CY2020Q3	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	12232000	USD
CY2019Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	6170000	USD
CY2020Q3	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	149000	USD
CY2019Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	2000	USD
CY2020Q3	us-gaap	Liabilities Current LiabilitiesCurrent	125391000	USD
CY2019Q4	us-gaap	Liabilities Current LiabilitiesCurrent	116974000	USD
CY2020Q3	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	7883000	USD
CY2019Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	7214000	USD
CY2020Q3	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	8355000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	10818000	USD
CY2020Q3	us-gaap	Mine Reclamation And Closing Liability Noncurrent MineReclamationAndClosingLiabilityNoncurrent	100072000	USD
CY2019Q4	us-gaap	Mine Reclamation And Closing Liability Noncurrent MineReclamationAndClosingLiabilityNoncurrent	103793000	USD
CY2020Q3	us-gaap	Long Term Line Of Credit LongTermLineOfCredit	495839000	USD
CY2019Q4	us-gaap	Long Term Line Of Credit LongTermLineOfCredit	504729000	USD
CY2020Q3	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	129506000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	138282000	USD
CY2020Q3	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	48303000	USD
	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	450240000	USD
CY2020Q3	us-gaap	Cost Depreciation Amortization And Depletion CostDepreciationAmortizationAndDepletion	40238000	USD
CY2019Q3	us-gaap	Cost Depreciation Amortization And Depletion CostDepreciationAmortizationAndDepletion	50774000	USD
	us-gaap	Cost Depreciation Amortization And Depletion CostDepreciationAmortizationAndDepletion	119327000	USD
	us-gaap	Cost Depreciation Amortization And Depletion CostDepreciationAmortizationAndDepletion	139038000	USD
CY2020Q3	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	146215000	USD
CY2019Q3	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	146652000	USD
	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	404044000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	502983000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	448321000	USD
CY2020Q3	hl	Cost Of Goods Sold Before Depreciation Depletion And Amortization CostOfGoodsSoldBeforeDepreciationDepletionAndAmortization	105977000	USD
CY2019Q3	hl	Cost Of Goods Sold Before Depreciation Depletion And Amortization CostOfGoodsSoldBeforeDepreciationDepletionAndAmortization	95878000	USD
	hl	Cost Of Goods Sold Before Depreciation Depletion And Amortization CostOfGoodsSoldBeforeDepreciationDepletionAndAmortization	284717000	USD
	hl	Cost Of Goods Sold Before Depreciation Depletion And Amortization CostOfGoodsSoldBeforeDepreciationDepletionAndAmortization	311202000	USD
CY2019Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	56219000	USD
CY2020Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	6153000	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	6856000	USD
CY2020Q3	us-gaap	Liabilities Liabilities	921502000	USD
CY2019Q4	us-gaap	Liabilities Liabilities	944885000	USD
CY2020Q3	us-gaap	Preferred Stock Value PreferredStockValue	39000	USD
CY2019Q4	us-gaap	Preferred Stock Value PreferredStockValue	39000	USD
CY2020Q3	us-gaap	Common Stock Value CommonStockValue	134421000	USD
CY2019Q4	us-gaap	Common Stock Value CommonStockValue	132292000	USD
CY2020Q3	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	1998322000	USD
CY2019Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	1973700000	USD
CY2020Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-375527000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-353331000	USD
CY2020Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-40111000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-37310000	USD
CY2020Q3	us-gaap	Treasury Stock Value TreasuryStockValue	23496000	USD
CY2019Q4	us-gaap	Treasury Stock Value TreasuryStockValue	22967000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	1693648000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	1692423000	USD
CY2020Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2615150000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2637308000	USD
CY2020Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	199703000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	161532000	USD
CY2020Q3	us-gaap	Gross Profit GrossProfit	53488000	USD
CY2019Q3	us-gaap	Gross Profit GrossProfit	14880000	USD
	us-gaap	Gross Profit GrossProfit	98939000	USD
	us-gaap	Gross Profit GrossProfit	-1919000	USD
CY2020Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	11713000	USD
CY2019Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	7978000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	27631000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	26855000	USD
CY2020Q3	hl	Exploration Exploration	3407000	USD
CY2019Q3	hl	Exploration Exploration	4808000	USD
	hl	Exploration Exploration	7899000	USD
	hl	Exploration Exploration	13556000	USD
CY2020Q3	hl	Predevelopment Predevelopment	759000	USD
CY2019Q3	hl	Predevelopment Predevelopment	881000	USD
	hl	Predevelopment Predevelopment	1857000	USD
	hl	Predevelopment Predevelopment	2535000	USD
CY2019Q3	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	437000	USD
CY2020Q3	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	0	USD
CY2019Q3	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	53000	USD
	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	0	USD
	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	614000	USD
CY2020Q3	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	3497000	USD
	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	5851000	USD
	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	1681000	USD
CY2020Q3	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	14000	USD
CY2019Q3	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-24000	USD
	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-559000	USD
	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-4666000	USD
CY2020Q3	us-gaap	Environmental Remediation Expense EnvironmentalRemediationExpense	1254000	USD
CY2019Q3	us-gaap	Environmental Remediation Expense EnvironmentalRemediationExpense	1907000	USD
	us-gaap	Environmental Remediation Expense EnvironmentalRemediationExpense	2807000	USD
	us-gaap	Environmental Remediation Expense EnvironmentalRemediationExpense	3529000	USD
CY2020Q3	hl	Employee Labor Strike Related Costs EmployeeLaborStrikeRelatedCosts	1541000	USD
CY2019Q3	hl	Employee Labor Strike Related Costs EmployeeLaborStrikeRelatedCosts	3722000	USD
	hl	Employee Labor Strike Related Costs EmployeeLaborStrikeRelatedCosts	24109000	USD
	hl	Employee Labor Strike Related Costs EmployeeLaborStrikeRelatedCosts	8766000	USD
CY2020Q3	hl	Foundation Grant Expense FoundationGrantExpense	0	USD
CY2019Q3	hl	Foundation Grant Expense FoundationGrantExpense	0	USD
	hl	Foundation Grant Expense FoundationGrantExpense	1970000	USD
	hl	Foundation Grant Expense FoundationGrantExpense	0	USD
CY2020Q3	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	2000	USD
CY2019Q3	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	183000	USD
	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	13000	USD
	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	593000	USD
CY2020Q3	us-gaap	Operating Expenses OperatingExpenses	22159000	USD
CY2019Q3	us-gaap	Operating Expenses OperatingExpenses	19993000	USD
	us-gaap	Operating Expenses OperatingExpenses	72696000	USD
	us-gaap	Operating Expenses OperatingExpenses	62795000	USD
CY2020Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	31329000	USD
CY2019Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	-5113000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	26243000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	-64714000	USD
CY2020Q3	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	-6666000	USD
CY2019Q3	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	-4718000	USD
	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	-12775000	USD
	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	-2719000	USD
CY2020Q3	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	0	USD
CY2019Q3	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	927000	USD
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	0	USD
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	927000	USD
CY2020Q3	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	3979000	USD
CY2019Q3	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	-126000	USD
	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	9410000	USD
	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	-1159000	USD
CY2020Q3	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-2196000	USD
CY2019Q3	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	773000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	1235000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-6741000	USD
CY2020Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-406000	USD
CY2019Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-1096000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-1582000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-3407000	USD
CY2020Q3	us-gaap	Interest Expense InterestExpense	10779000	USD
CY2019Q3	us-gaap	Interest Expense InterestExpense	11777000	USD
	us-gaap	Interest Expense InterestExpense	38919000	USD
	us-gaap	Interest Expense InterestExpense	33777000	USD
CY2020Q3	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-16068000	USD
CY2019Q3	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-16017000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-17585000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-91581000	USD
	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-42631000	USD
	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-46876000	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	15261000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-21130000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-16388000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-111590000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1633000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-1614000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1197000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-20009000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	13628000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	-19516000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-17585000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-91581000	USD
CY2020Q3	us-gaap	Dividends Preferred Stock DividendsPreferredStock	138000	USD
CY2019Q3	us-gaap	Dividends Preferred Stock DividendsPreferredStock	138000	USD
	us-gaap	Dividends Preferred Stock DividendsPreferredStock	414000	USD
	us-gaap	Dividends Preferred Stock DividendsPreferredStock	414000	USD
CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	13490000	USD
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-19654000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-17999000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-91995000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	13628000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	-19516000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-17585000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-91581000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent	6150000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent	-3288000	USD
	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent	-2801000	USD
	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent	4511000	USD
CY2020Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	19778000	USD
CY2019Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-22804000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-20386000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-87070000	USD
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.03
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.04
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.03
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.19
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.03
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.04
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.03
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.19
CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	529838000
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	489971000
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	526098000
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	486298000
CY2020Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	535788000
CY2019Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	489971000
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	526098000
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	486298000
CY2020Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.0025
CY2019Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.0025
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.0075
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.0075
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	126911000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	143040000	USD
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	-0	USD
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	927000	USD
	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	9410000	USD
	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	-1159000	USD
	us-gaap	Inventory Write Down InventoryWriteDown	0	USD
	us-gaap	Inventory Write Down InventoryWriteDown	1399000	USD
	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-559000	USD
	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-4666000	USD
	us-gaap	Environmental Expense And Liabilities EnvironmentalExpenseAndLiabilities	4638000	USD
	us-gaap	Environmental Expense And Liabilities EnvironmentalExpenseAndLiabilities	5298000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	5229000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	4758000	USD
	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	6390000	USD
	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	26616000	USD
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	3066000	USD
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	1919000	USD
	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-4483000	USD
	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-5824000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	2810000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-6263000	USD
	hl	Foundation Grant Expense FoundationGrantExpense	1970000	USD
	hl	Foundation Grant Expense FoundationGrantExpense	0	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	3741000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	10215000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	13090000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	6501000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-6748000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-14913000	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-1762000	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	5616000	USD
	us-gaap	Increase Decrease In Accrued Salaries IncreaseDecreaseInAccruedSalaries	11317000	USD
	us-gaap	Increase Decrease In Accrued Salaries IncreaseDecreaseInAccruedSalaries	4506000	USD
	us-gaap	Increase Decrease In Property And Other Taxes Payable IncreaseDecreaseInPropertyAndOtherTaxesPayable	3276000	USD
	us-gaap	Increase Decrease In Property And Other Taxes Payable IncreaseDecreaseInPropertyAndOtherTaxesPayable	-5733000	USD
	hl	Increase Decrease In Accrued Reclamation And Closure Costs And Other Non Current Liabilities IncreaseDecreaseInAccruedReclamationAndClosureCostsAndOtherNonCurrentLiabilities	-2483000	USD
	hl	Increase Decrease In Accrued Reclamation And Closure Costs And Other Non Current Liabilities IncreaseDecreaseInAccruedReclamationAndClosureCostsAndOtherNonCurrentLiabilities	-5821000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	115892000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	63609000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	54382000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	97338000	USD
	hl	Proceeds From Sale Of Investments ProceedsFromSaleOfInvestments	0	USD
	hl	Proceeds From Sale Of Investments ProceedsFromSaleOfInvestments	1760000	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	305000	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	86000	USD
	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	1661000	USD
	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	389000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-55738000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-95881000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	2745000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	2239000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	3951000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	3655000	USD
	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	414000	USD
	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	414000	USD
	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	1287000	USD
	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	587000	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	707107000	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	245000000	USD
	us-gaap	Repayments Of Debt RepaymentsOfDebt	716500000	USD
	us-gaap	Repayments Of Debt RepaymentsOfDebt	195000000	USD
	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	4246000	USD
	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	5484000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-22036000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	37621000	USD
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	-1873000	USD
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	257000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	36245000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	5606000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	63477000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	28414000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	99722000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	34020000	USD
	us-gaap	Interest Paid Net InterestPaidNet	33828000	USD
	us-gaap	Interest Paid Net InterestPaidNet	21696000	USD
	hl	Finance Lease Liability Additions FinanceLeaseLiabilityAdditions	5747000	USD
	hl	Finance Lease Liability Additions FinanceLeaseLiabilityAdditions	6506000	USD
	hl	Noncash Activity Recognition Of Operating Lease Liabilites And Rightofuse Assets NoncashActivityRecognitionOfOperatingLeaseLiabilitesAndRightofuseAssets	0	USD
	hl	Noncash Activity Recognition Of Operating Lease Liabilites And Rightofuse Assets NoncashActivityRecognitionOfOperatingLeaseLiabilitesAndRightofuseAssets	22365000	USD
	us-gaap	Restricted Stock Expense RestrictedStockExpense	5095000	USD
	us-gaap	Restricted Stock Expense RestrictedStockExpense	8274000	USD
	hl	Marketable Equity Securities Received For Sale Of Mineral Interest MarketableEquitySecuritiesReceivedForSaleOfMineralInterest	0	USD
	hl	Marketable Equity Securities Received For Sale Of Mineral Interest MarketableEquitySecuritiesReceivedForSaleOfMineralInterest	2257000	USD
CY2020Q2	us-gaap	Stockholders Equity StockholdersEquity	1658693000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	13628000	USD
CY2020Q3	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	1317000	USD
CY2020Q3	us-gaap	Dividends Common Stock DividendsCommonStock	1329000	USD
CY2020Q3	us-gaap	Dividends Preferred Stock DividendsPreferredStock	138000	USD
CY2020Q3	hl	Stock Issued During Period Value401k Match StockIssuedDuringPeriodValue401kMatch	1413000	USD
CY2020Q3	us-gaap	Stock Issued During Period Value Employee Benefit Plan StockIssuedDuringPeriodValueEmployeeBenefitPlan	12431000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	6150000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	1693648000	USD
CY2019Q2	us-gaap	Stockholders Equity StockholdersEquity	1639228000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	-19516000	USD
CY2019Q3	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	1206000	USD
CY2019Q3	hl	Restricted Stock Unit Distributions RestrictedStockUnitDistributions	-595000	USD
CY2019Q3	us-gaap	Dividends Common Stock DividendsCommonStock	1225000	USD
CY2019Q3	us-gaap	Dividends Preferred Stock DividendsPreferredStock	138000	USD
CY2019Q3	hl	Stock Issued During Period Value401k Match StockIssuedDuringPeriodValue401kMatch	972000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-3288000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	1616644000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	1692423000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-17585000	USD
	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	3746000	USD
	hl	Restricted Stock Unit Distributions RestrictedStockUnitDistributions	-1479000	USD
	us-gaap	Dividends Common Stock DividendsCommonStock	3951000	USD
	us-gaap	Dividends Preferred Stock DividendsPreferredStock	414000	USD
	hl	Stock Issued During Period Value401k Match StockIssuedDuringPeriodValue401kMatch	3645000	USD
	us-gaap	Treasury Stock Reissued At Lower Than Repurchase Price TreasuryStockReissuedAtLowerThanRepurchasePrice	-1970000	USD
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	3830000	USD
	us-gaap	Stock Issued During Period Value Employee Benefit Plan StockIssuedDuringPeriodValueEmployeeBenefitPlan	12781000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-2801000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	1693648000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	1690963000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-91581000	USD
	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	4303000	USD
	hl	Restricted Stock Unit Distributions RestrictedStockUnitDistributions	-636000	USD
	us-gaap	Dividends Common Stock DividendsCommonStock	3655000	USD
	us-gaap	Dividends Preferred Stock DividendsPreferredStock	414000	USD
	hl	Stock Issued During Period Value401k Match StockIssuedDuringPeriodValue401kMatch	2752000	USD
	hl	Adjustments To Additional Paid In Capital Fair Value Adjustment Warrant Issued AdjustmentsToAdditionalPaidInCapitalFairValueAdjustmentWarrantIssued	-325000	USD
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	6671000	USD
	us-gaap	Stock Issued During Period Value Employee Benefit Plan StockIssuedDuringPeriodValueEmployeeBenefitPlan	3600000	USD
	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	455000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	4511000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	1616644000	USD
CY2020Q3	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	17400000	USD
CY2019Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	6200000	USD
CY2020Q3	us-gaap	Equity Securities Fv Ni Cost EquitySecuritiesFvNiCost	11300000	USD
CY2019Q4	us-gaap	Equity Securities Fv Ni Cost EquitySecuritiesFvNiCost	9800000	USD
	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	9400000	USD
	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-1200000	USD
	hl	Availableforsale Equity Securities Acquired During Period Cost Basis AvailableforsaleEquitySecuritiesAcquiredDuringPeriodCostBasis	1700000	USD
	hl	Availableforsale Equity Securities Acquired During Period Cost Basis AvailableforsaleEquitySecuritiesAcquiredDuringPeriodCostBasis	400000	USD
	hl	Availableforsale Equity Securities Sold During Period Cost Basis AvailableforsaleEquitySecuritiesSoldDuringPeriodCostBasis	900000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Equity ProceedsFromSaleOfAvailableForSaleSecuritiesEquity	1800000	USD
	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	900000	USD
CY2020Q3	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	705000	USD
CY2019Q3	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	315000	USD
	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	1690000	USD
	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	317000	USD
CY2020Q3	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	2286000	USD
CY2019Q3	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	2467000	USD
	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	6005000	USD
	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	5260000	USD
CY2020Q3	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	2991000	USD
CY2019Q3	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	2782000	USD
	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	7695000	USD
	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	5577000	USD
CY2020Q3	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-192000	USD
CY2019Q3	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-2652000	USD
	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-3307000	USD
	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-10585000	USD
CY2020Q3	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-1166000	USD
CY2019Q3	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-1744000	USD
	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-3191000	USD
	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-15001000	USD
CY2020Q3	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-1358000	USD
CY2019Q3	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-4396000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-6498000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-25586000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1633000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-1614000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1197000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-20009000	USD
CY2020Q3	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	126100000	USD
CY2019Q4	us-gaap	Environmental Remediation Expense EnvironmentalRemediationExpense	6100000	USD
CY2020Q3	us-gaap	Contractual Obligation ContractualObligation	700000	USD
CY2020Q3	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	15000000.0	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	13600000	USD
CY2020Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	750000000
CY2020Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.25
CY2020Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	537655291
CY2020Q3	us-gaap	Treasury Stock Shares TreasuryStockShares	6821044
CY2020Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	530834247
CY2020Q3	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.03
CY2019Q3	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.04
	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.03
	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.19
CY2020Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2499956
CY2020Q3	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	1454246
CY2020Q3	hl	Incremental Common Shares Attributable To Dilutive Effect Of Deferred Shares IncrementalCommonSharesAttributableToDilutiveEffectOfDeferredShares	1996112
CY2020Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	199703000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	161532000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	502983000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	448321000	USD
CY2020Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	31329000	USD
CY2019Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	-5113000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	26243000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	-64714000	USD
CY2020Q1	us-gaap	Assets Assets	2615150000	USD
CY2019Q4	us-gaap	Assets Assets	2637308000	USD
CY2020Q3	hl	Smelter And Refining Charges SmelterAndRefiningCharges	18587000	USD
CY2019Q3	hl	Smelter And Refining Charges SmelterAndRefiningCharges	5351000	USD
	hl	Smelter And Refining Charges SmelterAndRefiningCharges	52177000	USD
	hl	Smelter And Refining Charges SmelterAndRefiningCharges	21609000	USD
CY2020Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	199703000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	161532000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	502983000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	448321000	USD
CY2020Q3	hl	Sales Revenue Goods Excluding Gain Loss On Forward Contracts SalesRevenueGoodsExcludingGainLossOnForwardContracts	209262000	USD
CY2019Q3	hl	Sales Revenue Goods Excluding Gain Loss On Forward Contracts SalesRevenueGoodsExcludingGainLossOnForwardContracts	160484000	USD
	hl	Sales Revenue Goods Excluding Gain Loss On Forward Contracts SalesRevenueGoodsExcludingGainLossOnForwardContracts	515861000	USD
	hl	Sales Revenue Goods Excluding Gain Loss On Forward Contracts SalesRevenueGoodsExcludingGainLossOnForwardContracts	448458000	USD
CY2020Q3	us-gaap	Derivative Loss On Derivative DerivativeLossOnDerivative	9600000	USD
	us-gaap	Derivative Loss On Derivative DerivativeLossOnDerivative	12900000	USD
CY2019Q3	us-gaap	Derivative Gain On Derivative DerivativeGainOnDerivative	1100000	USD
	us-gaap	Derivative Loss On Derivative DerivativeLossOnDerivative	100000	USD
CY2020Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	28500000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	12000000.0	USD
	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	5616000	USD
CY2020Q3	hl	Average Realized Silver Price Per Ounce AverageRealizedSilverPricePerOunce	25.32	USD
CY2020Q3	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	1334000	USD
CY2019Q3	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	1100000	USD
CY2020Q3	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	1404000	USD
CY2019Q3	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	1620000	USD
CY2020Q3	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	1872000	USD
CY2019Q3	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	1496000	USD
CY2020Q3	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	29000	USD
CY2019Q3	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	15000	USD
CY2020Q3	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-1163000	USD
CY2019Q3	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-1097000	USD
CY2020Q3	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	2058000	USD
CY2019Q3	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	2336000	USD
	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	4002000	USD
	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	3300000	USD
	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	4212000	USD
	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	4860000	USD
	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	4488000	USD
	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	87000	USD
	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	45000	USD
	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-3489000	USD
	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-3291000	USD
	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	6174000	USD
	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	7008000	USD
	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	1183773
	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	2700000	USD
	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	2.32
	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	1060480
	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	2200000	USD
	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	2.11
CY2012Q1	hl	Quarterly Average Realized Silver Price Per Ounce QuarterlyAverageRealizedSilverPricePerOunce	30	USD
CY2020Q3	hl	Quarterly Average Realized Silver Price Per Ounce QuarterlyAverageRealizedSilverPricePerOunce	25	USD
CY2020Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.0025
CY2020Q3	us-gaap	Dividends Common Stock DividendsCommonStock	1300000	USD
CY2020Q2	hl	Average Realized Silver Price Per Ounce AverageRealizedSilverPricePerOunce	18.44	USD
CY2020Q2	hl	Average Realized Silver Price Minimum Dividend Threshold AverageRealizedSilverPriceMinimumDividendThreshold	30
CY2020Q3	hl	Average Realized Silver Price Minimum Dividend Threshold AverageRealizedSilverPriceMinimumDividendThreshold	25.00
CY2020Q3	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	20300000	USD
CY2020Q3	us-gaap	Finance Lease Liability FinanceLeaseLiability	14100000	USD
CY2020Q3	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	6200000	USD
CY2020Q3	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	7900000	USD
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	12600000	USD
CY2019Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	5400000	USD
CY2019Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	7200000	USD
CY2020Q3	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	20800000	USD
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	20600000	USD
	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	5500000	USD
	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	5100000	USD
	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	400000	USD
	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	600000	USD
CY2020Q3	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	15000000.0	USD
CY2020Q3	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	900000	USD
CY2020Q3	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P1Y10M24D
CY2020Q3	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.068	pure
CY2020Q3	us-gaap	Finance Lease Liability Payments Due In Next Rolling Twelve Months FinanceLeaseLiabilityPaymentsDueInNextRollingTwelveMonths	6549000	USD
CY2020Q3	us-gaap	Finance Lease Liability Payments Due In Rolling Year Two FinanceLeaseLiabilityPaymentsDueInRollingYearTwo	4508000	USD
CY2020Q3	us-gaap	Finance Lease Liability Payments Due In Rolling Year Three FinanceLeaseLiabilityPaymentsDueInRollingYearThree	2604000	USD
CY2020Q3	us-gaap	Finance Lease Liability Payments Due In Rolling Year Four FinanceLeaseLiabilityPaymentsDueInRollingYearFour	1328000	USD
CY2020Q3	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	14989000	USD
CY2020Q3	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	919000	USD
CY2020Q3	us-gaap	Finance Lease Liability FinanceLeaseLiability	14070000	USD
CY2020Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	11900000	USD
CY2020Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	3600000	USD
CY2020Q3	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	8400000	USD
CY2020Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	11900000	USD
	us-gaap	Operating Lease Expense OperatingLeaseExpense	4700000	USD
	us-gaap	Operating Lease Expense OperatingLeaseExpense	5700000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	13600000	USD
CY2020Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y3M18D
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due Next Rolling Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths	3883000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Two LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearTwo	3120000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Three LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearThree	2569000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Four LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFour	1035000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Five LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFive	531000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due After Rolling Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterRollingYearFive	2464000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	13602000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	1657000	USD
CY2020Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	11945000	USD
CY2020Q3	hl	Maximum Allocation Of Forecasted Cad Demonimated Operating Costs MaximumAllocationOfForecastedCADDemonimatedOperatingCosts	0.75	pure
CY2020Q3	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-1400000	USD
	us-gaap	Foreign Currency Cash Flow Hedge Gain Loss Reclassified To Earnings Net ForeignCurrencyCashFlowHedgeGainLossReclassifiedToEarningsNet	2800000	USD
	us-gaap	Gain Loss On Components Excluded From Assessment Of Foreign Currency Cash Flow Hedge Effectiveness GainLossOnComponentsExcludedFromAssessmentOfForeignCurrencyCashFlowHedgeEffectiveness	0	USD
CY2020Q3	hl	Maximum Allocation Of Forecasted Cad Demonimated Operating Costs MaximumAllocationOfForecastedCADDemonimatedOperatingCosts	0.75	pure
CY2020Q3	us-gaap	Notes Payable Fair Value Disclosure NotesPayableFairValueDisclosure	468300000	USD
	us-gaap	Subsidiary Or Equity Method Investee Cumulative Percentage Ownership After All Transactions SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions	1	pure
CY2020Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	98669000	USD
CY2020Q3	hl	Other Current Assets OtherCurrentAssets	136487000	USD
CY2020Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	2342038000	USD
CY2020Q3	us-gaap	Related Party Transaction Due From To Related Party RelatedPartyTransactionDueFromToRelatedParty	0	USD
CY2020Q3	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	0	USD
CY2020Q3	hl	Other Non Current Assets OtherNonCurrentAssets	37956000	USD
CY2020Q3	us-gaap	Assets Assets	2615150000	USD
CY2020Q3	us-gaap	Liabilities Current LiabilitiesCurrent	125391000	USD
CY2020Q3	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	512077000	USD
CY2020Q3	us-gaap	Mine Reclamation And Closing Liability Noncurrent MineReclamationAndClosingLiabilityNoncurrent	100072000	USD
CY2020Q3	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	129506000	USD
CY2020Q3	hl	Other Non Current Liabilities OtherNonCurrentLiabilities	54456000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	1693648000	USD
CY2020Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2615150000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	62452000	USD
CY2019Q4	hl	Other Current Assets OtherCurrentAssets	116672000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	2423698000	USD
CY2019Q4	us-gaap	Related Party Transaction Due From To Related Party RelatedPartyTransactionDueFromToRelatedParty	0	USD
CY2019Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	0	USD
CY2019Q4	hl	Other Non Current Assets OtherNonCurrentAssets	34486000	USD
CY2019Q4	us-gaap	Assets Assets	2637308000	USD
CY2019Q4	us-gaap	Liabilities Current LiabilitiesCurrent	116974000	USD
CY2019Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	522761000	USD
CY2019Q4	us-gaap	Mine Reclamation And Closing Liability Noncurrent MineReclamationAndClosingLiabilityNoncurrent	103793000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	138282000	USD
CY2019Q4	hl	Other Non Current Liabilities OtherNonCurrentLiabilities	63075000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	1692423000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2637308000	USD
CY2020Q3	hl	Revenue Expense From Contract With Customer Including Assessed Tax RevenueExpenseFromContractWithCustomerIncludingAssessedTax	199703000	USD
CY2020Q3	hl	Cost Of Goods Sold Before Depreciation Depletion And Amortization CostOfGoodsSoldBeforeDepreciationDepletionAndAmortization	105977000	USD
CY2020Q3	us-gaap	Cost Depreciation Amortization And Depletion CostDepreciationAmortizationAndDepletion	40238000	USD
CY2020Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	11713000	USD
CY2020Q3	hl	Exploration And Predevelopment Costs ExplorationAndPredevelopmentCosts	4166000	USD
CY2020Q3	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	-6666000	USD
CY2020Q3	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	2000	USD
CY2020Q3	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
CY2020Q3	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-15680000	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	15261000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1633000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	13628000	USD
CY2020Q3	us-gaap	Dividends Preferred Stock DividendsPreferredStock	138000	USD
CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	13490000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	13628000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	6150000	USD
CY2020Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	19778000	USD
	hl	Revenue Expense From Contract With Customer Including Assessed Tax RevenueExpenseFromContractWithCustomerIncludingAssessedTax	502983000	USD
	hl	Cost Of Goods Sold Before Depreciation Depletion And Amortization CostOfGoodsSoldBeforeDepreciationDepletionAndAmortization	284717000	USD
	us-gaap	Cost Depreciation Amortization And Depletion CostDepreciationAmortizationAndDepletion	119327000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	27631000	USD
	hl	Exploration And Predevelopment Costs ExplorationAndPredevelopmentCosts	9756000	USD
	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	-12775000	USD
	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	13000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-65152000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-16388000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1197000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-17585000	USD
	us-gaap	Dividends Preferred Stock DividendsPreferredStock	414000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-17999000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-17585000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-2801000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-20386000	USD
CY2019Q3	hl	Revenue Expense From Contract With Customer Including Assessed Tax RevenueExpenseFromContractWithCustomerIncludingAssessedTax	161532000	USD
CY2019Q3	hl	Cost Of Goods Sold Before Depreciation Depletion And Amortization CostOfGoodsSoldBeforeDepreciationDepletionAndAmortization	95878000	USD
CY2019Q3	us-gaap	Cost Depreciation Amortization And Depletion CostDepreciationAmortizationAndDepletion	50774000	USD
CY2019Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	7978000	USD
CY2019Q3	hl	Exploration And Predevelopment Costs ExplorationAndPredevelopmentCosts	5689000	USD
CY2019Q3	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	53000	USD
CY2019Q3	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	-4718000	USD
CY2019Q3	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	183000	USD
CY2019Q3	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
CY2019Q3	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-17389000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-21130000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-1614000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	-19516000	USD
CY2019Q3	us-gaap	Dividends Preferred Stock DividendsPreferredStock	138000	USD
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-19654000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	-19516000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-3288000	USD
CY2019Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-22804000	USD
	hl	Revenue Expense From Contract With Customer Including Assessed Tax RevenueExpenseFromContractWithCustomerIncludingAssessedTax	448321000	USD
	hl	Cost Of Goods Sold Before Depreciation Depletion And Amortization CostOfGoodsSoldBeforeDepreciationDepletionAndAmortization	311202000	USD
	us-gaap	Cost Depreciation Amortization And Depletion CostDepreciationAmortizationAndDepletion	139038000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	26855000	USD
	hl	Exploration And Predevelopment Costs ExplorationAndPredevelopmentCosts	16091000	USD
	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	614000	USD
	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	-2719000	USD
	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	593000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-62799000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-111590000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-20009000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-91581000	USD
	us-gaap	Dividends Preferred Stock DividendsPreferredStock	414000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-91995000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-91581000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	4511000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-87070000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	115892000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	54382000	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	1356000	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	4365000	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	707107000	USD
	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	720746000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-4032000	USD
	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-1873000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	36245000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	63477000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	99722000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	63609000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	97338000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	-0	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-1457000	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	4070000	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	245000000	USD
	us-gaap	Repayments Of Long Term Debt And Capital Securities RepaymentsOfLongTermDebtAndCapitalSecurities	200484000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-2825000	USD
	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	257000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	5606000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	28414000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	34020000	USD

Files In Submission

Name	View Source	Status
0001437749-20-023040-index-headers.html	Edgar Link	pending
0001437749-20-023040-index.html	Edgar Link	pending
0001437749-20-023040.txt	Edgar Link	pending
0001437749-20-023040-xbrl.zip	Edgar Link	pending
ex_210932.htm	Edgar Link	pending
ex_210933.htm	Edgar Link	pending
ex_210934.htm	Edgar Link	pending
ex_210935.htm	Edgar Link	pending
ex_210936.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
graph.jpg	Edgar Link	pending
graph1.jpg	Edgar Link	pending
hl-20200930.xsd	Edgar Link	pending
hl-20200930_cal.xml	Edgar Link	unprocessable
hl-20200930_def.xml	Edgar Link	unprocessable
hl-20200930_lab.xml	Edgar Link	unprocessable
hl-20200930_pre.xml	Edgar Link	unprocessable
hl20200930_10q.htm	Edgar Link	pending
hl20200930_10qimg001.gif	Edgar Link	pending
hl20200930_10qimg004.gif	Edgar Link	pending
hl20200930_10qimg005.gif	Edgar Link	pending
hl20200930_10q_htm.xml	Edgar Link	completed
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R48.htm	Edgar Link	pending
R49.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R50.htm	Edgar Link	pending
R51.htm	Edgar Link	pending
R52.htm	Edgar Link	pending
R53.htm	Edgar Link	pending
R54.htm	Edgar Link	pending
R55.htm	Edgar Link	pending
R56.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$HL
HECLA MINING CO/DE/ Stock $hl

2020 Q4 Form 10-Q Financial Statement

#000143774920023040 Filed on November 06, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HL HECLA MINING CO/DE/ Stock $hl

2020 Q4 Form 10-Q Financial Statement

#000143774920023040 Filed on November 06, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HL
HECLA MINING CO/DE/ Stock $hl