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Nature of Operations	12 Months Ended
	Dec. 31, 2017
Nature Of Operations [Abstract]
Nature Of Operations	1. Nature of Operations Vista Gold Corp. and its subsidiaries (collectively, “Vista,” the “Company,” “we,” “our,” or “us”) operate in the gold mining industry. We are focused on the evaluation, acquisition, exploration and advancement of gold exploration, and potential development projects, which may lead to gold production or value adding strategic transactions such as earn-in right agreements, option agreements, leases to third parties, joint venture arrangements with other mining companies, or outright sales of assets for cash and/or other consideration.  We look for opportunities to improve the value of our gold projects through exploration drilling and/or technical studies focused on optimizing previous engineering work.  The Company’s flagship asset is its 100% owned Mt Todd gold project (“Mt Todd”) in the Northern Territory (“NT”) Australia. Mt Todd is the largest undeveloped gold project in Australia.  The Company recently received authorization for the last major environmental permit and completed an updated Preliminary Feasibility Study for Mt Todd, which confirms the projects robust economics at today’s gold prices.  With these important milestones complete, Vista is in a position to actively pursue strategic alternatives that provide the best opportunity to maximize value for the Company.  We also hold 4.2% of the outstanding common shares in the capital of Midas Gold Corp. (“Midas Gold Shares”), a non-core project in Mexico, and royalty interests in Indonesia and the United States. All dollar amounts stated herein are in U.S. dollars in thousands, except per share amounts and per warrant amounts unless specified otherwise. References to C$ refer to Canadian currency, AUD or A$ to Australian currency, and USD or $ to United States currency.

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- Definition

The entire disclosure for the nature of an entity's business, major products or services, principal markets including location, and the relative importance of its operations in each business and the basis for the determination, including but not limited to, assets, revenues, or earnings. For an entity that has not commenced principal operations, disclosures about the risks and uncertainties related to the activities in which the entity is currently engaged and an understanding of what those activities are being directed toward.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6003-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 2A
-URI http://asc.fasb.org/extlink&oid=64851502&loc=SL51803626-108592

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- References

No definition available.

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