Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2025	Aug. 06, 2025
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Jun. 30, 2025
Securities Act File Number	001-09025
Entity Registrant Name	VISTA GOLD CORP.
Entity Incorporation, State or Country Code	A1
Entity Tax Identification Number	98-0542444
Entity Address, Address Line One	8310 S Valley Hwy, Suite 300
Entity Address, Postal Zip Code	80112
Entity Address, City or Town	Englewood
Entity Address, State or Province	CO
City Area Code	720
Local Phone Number	981-1185
Title of 12(b) Security	Common Shares, no par value
Trading Symbol	VGZ
Security Exchange Name	NYSEAMER
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		125,181,090
Entity Central Index Key	0000783324
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	Q2
Amendment Flag	false