v3.26.1
Cover - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Mar. 31, 2026
Jun. 30, 2025
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2025    
Document Transition Report false    
Document Financial Statement Error Correction [Flag] false    
ICFR Auditor Attestation Flag false    
Entity File Number 1-13627    
Amendment Flag false    
Entity Registrant Name GOLDEN MINERALS COMPANY    
Entity Central Index Key 0001011509    
Entity Incorporation, State or Country Code DE    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
Entity Interactive Data Current Yes    
Entity Tax Identification Number 26-4413382    
Entity Address, Address Line One 1312 17th St., Unit 2136    
Entity Address, City or Town Denver    
Entity Address, State or Province CO    
Entity Address, Postal Zip Code 80202    
City Area Code (303)    
Local Phone Number 839-5060    
Title of 12(g) Security Common Stock, $0.01 par value    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Shell Company false    
Documents Incorporated by Reference [Text Block] Portions of the registrant’s Definitive Proxy Statement to be filed with the Securities and Exchange Commission pursuant to Regulation 14A in connection with the 2026 Annual Meeting of Stockholders are incorporated by reference in Part III of this Annual Report on Form 10-K.    
Entity Public Float     $ 2,710
Entity Common Stock, Shares Outstanding   15,053,048