Debt Instrument Carrying Amount After Unamortized Discount Premium And Issuance Costs

No definition available.

Name:	hl_DebtInstrumentCarryingAmountAfterUnamortizedDiscountPremiumAndIssuanceCosts
Namespace Prefix:	hl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of debt and lease obligation, classified as current.

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Balance Type:	credit
Period Type:	instant

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Balance Type:	credit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Period Type:	duration

- Definition

Amount of unamortized debt discount (premium) and debt issuance costs.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

+ References

+ Details

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Note 9 - Debt, Credit Facility and Leases - Debt Summary (Details) $ in Thousands, $ in Millions	Mar. 31, 2026 USD ($)	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Jul. 09, 2020 CAD ($)
Debt Instrument [Line Items]
Less: current debt		$ 0	$ (33,617)
Senior Notes [Member]
Debt Instrument [Line Items]
Principal			531,525
Unamortized discount/premium and issuance costs			(2,724)
Total debt			528,801
Less: current debt			(33,617)
Long-term debt			495,184
Senior Notes [Member] \| The 2028 Senior Notes [Member]
Debt Instrument [Line Items]
Principal	$ 263,000	263,000	475,000
Unamortized discount/premium and issuance costs	(927)	(1,053)	(2,816)
Total debt		261,947	472,184
Less: current debt			0
Long-term debt	$ 262,073	$ 261,947	472,184
Senior Notes [Member] \| Credit Agreement [Member]
Debt Instrument [Line Items]
Principal			23,000
Total debt			23,000
Less: current debt			0
Long-term debt			23,000
Senior Notes [Member] \| IQ Notes [Member]
Debt Instrument [Line Items]
Principal			33,525
Unamortized discount/premium and issuance costs			92
Total debt			33,617
Less: current debt			(33,617)
Long-term debt			$ 0	$ 48.2