v3.25.2
Document And Entity Information
Aug. 04, 2025
Document Information [Line Items]  
Document Type 8-K
Amendment Flag false
Document Period End Date Aug. 04, 2025
Entity Registrant Name HECLA MINING CO/DE/
Entity Central Index Key 0000719413
Entity Emerging Growth Company 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 North Mineral Drive
Entity Address, Address Line Two Suite 200
Entity Address, City or Town Coeur D'Alene
Entity Address, State or Province ID
Entity Address, Postal Zip Code 83815-9408
City Area Code (208)
Local Phone Number 769-4100
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Convertible 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