v3.26.1
Cover - shares
 6 Months Ended
Jun. 30, 2026
Aug. 12, 2026
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2026  
Document Transition Report false  
Entity File Number 001-43325  
Registrant Name Sunshine Silver Mining & Refining Company  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 85-3794822  
Entity Address, Address Line One 2209 Big Creek Rd  
Entity Address, City or Town Kellogg  
Entity Address, State or Province ID  
Entity Address, Postal Zip Code 83837  
City Area Code 208  
Local Phone Number 783-1700  
Title of 12(b) Security Common stock, par value $0.001 per share  
Trading Symbol SSMR  
Security Exchange Name NYSE  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   143,726,603
Amendment Flag false  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q2  
Central Index Key 0002091017  
Current Fiscal Year End Date --12-31