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Nature of Operations and Basis of Presentation	9 Months Ended
	Sep. 30, 2015
Nature Of Operations And Basis Of Presentation [Abstract]
Nature Of Operations And Basis Of Presentation	1. Nature of Operations and Basis of Presentation 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.  Our principal asset is our flagship Mt Todd gold project (“Mt Todd”) in Northern Territory (“NT”), Australia. We also hold 4.9% of the outstanding common shares in the capital of Midas Gold Corp. (“Midas Gold Shares”), non-core projects in Mexico and the United States, and royalty interests in projects in Bolivia and Indonesia.  The interim Condensed Consolidated Financial Statements (“interim statements”) of the Company are unaudited. In the opinion of management, all adjustments and disclosures necessary for a fair presentation of these interim statements have been included. The results reported in these interim statements are not necessarily indicative of the results that may be reported for the entire year. These interim statements should be read in conjunction with the Company’s Consolidated Financial Statements for the year ended December 31, 2014 as filed on March 3, 2015 on Form 10-K. The year-end balance sheet data was derived from the audited financial statements and, in accordance with the instructions to Form 10-Q, certain information and footnote disclosures required by United States generally accepted accounting principles (“GAAP”) have been condensed or omitted.  References to C$ refer to Canadian currency, A$ to Australian currency and $ 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



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-URI http://asc.fasb.org/extlink&oid=51801978&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=51801978&loc=SL51803626-108592

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