XML 67 R1.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Document and Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2019
Feb. 14, 2020
Jun. 30, 2019
Cover [Abstract]      
Entity Registrant Name VISTA GOLD CORP    
Entity Central Index Key 0000783324    
Current Fiscal Year End Date --12-31    
Entity Filer Category Accelerated Filer    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2019    
Entity Common Stock, Shares Outstanding   100,698,124  
Entity Public Float     $ 76,409,000
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Shell Company false