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Document and Entity Information (USD $)
 12 Months Ended
Dec. 31, 2013
Jun. 30, 2013
Feb. 26, 2013
Document and Entity Information [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 2013    
Document Fiscal Period Focus FY    
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2013    
Entity Common Stock, Shares Outstanding     82,275,217
Entity Public Float   $ 79,335,170  
Entity Well-known Seasoned Issuer No    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Trading Symbol vgz