XML 59 R1.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Document and Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2019
Feb. 28, 2020
Jun. 30, 2019
Document And Entity Information      
Entity Registrant Name SOLITARIO ZINC CORP.    
Entity Central Index Key 0000917225    
Document Type 10-K    
Document Period End Date Dec. 31, 2019    
Amendment Flag false    
Current Fiscal Year End Date --12-31    
Is Entity a Well-known Seasoned Issuer? No    
Is Entity a Voluntary Filer? No    
Is Entity's Reporting Status Current? Yes    
Is Entity Emerging Growth Company? false    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Public Float     $ 16,840,000
Entity Common Stock, Shares Outstanding   58,133,066  
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2019    
Entity Shell Company false