XML 11 R1.htm IDEA: XBRL DOCUMENT v3.20.2
Document and Entity Information - shares
 9 Months Ended
Sep. 30, 2020
Nov. 09, 2020
Cover [Abstract]    
Entity Registrant Name SOLITARIO ZINC CORP.  
Entity Central Index Key 0000917225  
Document Type 10-Q  
Document Period End Date Sep. 30, 2020  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Is Entity's Reporting Status Current? Yes  
Is Entity a Shell Company? false  
Entity Interactive Data Current Yes  
Entity Incorporation State Country Code CO  
Entity File Number 001-39278  
Is Entity Emerging Growth Company? false  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Common Stock, Shares Outstanding   58,108,366
Document Fiscal Period Focus Q3  
Document Fiscal Year Focus 2020