Vista Gold (VGZ) 10-K 14 Mar 24 2023 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Mar. 07, 2024	Jun. 30, 2023
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Dec. 31, 2023
Entity 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, City or Town	Englewood
Entity Address, State or Province	CO
Entity Address, Postal Zip Code	80112
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 Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
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
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction Flag	false
Entity Shell Company	false
Entity Public Float				$ 62,966,000
Entity Common Stock, Shares Outstanding			121,534,045
Auditor Name	Davidson & Company LLP	Plante & Moran, PLLC
Auditor Firm ID	731	166
Auditor Location	Vancouver, Canada	Denver, Colorado
Entity Central Index Key	0000783324
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	FY
Amendment Flag	false

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 6,069	$ 8,110
Other current assets	446	537
Total current assets	6,515	8,647
Non-current assets:
Mineral properties (Note 3)	2,146	2,146
Plant and equipment, net (Note 4)	204	193
Other non-current assets	69
Total non-current assets	2,419	2,339
Total assets	8,934	10,986
Current liabilities:
Accounts payable	190	169
Accrued liabilities and other (Note 5)	749	764
Total current liabilities	939	933
Non-current liabilities:
Deferred gain on grant of royalty (Note 6)	3,000
Other liabilities	44	24
Total non-current liabilities	3,044	24
Total liabilities	3,983	957
Commitments and contingencies (Note 8)
Shareholders' equity:
Common shares, no par value - unlimited shares authorized; shares outstanding: 2023 - 121,088,494 and 2022 - 118,480,878 (Note 7)	476,354	474,847
Accumulated deficit	(471,403)	(464,818)
Total shareholders' equity	4,951	10,029
Total liabilities and shareholders' equity	$ 8,934	$ 10,986

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Shareholders' equity:
Common Shares, par value	$ 0	$ 0
Common Stock, Shares Authorized, Unlimited [Fixed List]	Unlimited	Unlimited
Common shares outstanding	121,088,494	118,480,878

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME/(LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Operating income/(expense):
Gain on disposal of mineral property interests		$ 2,883
Exploration, property evaluation and holding costs	$ (3,262)	(4,522)
Corporate administration	(3,462)	(3,767)
Depreciation and amortization	(40)	(45)
Total operating expense, net	(6,764)	(5,451)
Non-operating income:
Interest income	263	111
Other income/(expense)	(84)	409
Total non-operating income	179	520
Loss before income taxes	(6,585)	(4,931)
Net loss	$ (6,585)	$ (4,931)
Basic:
Weighted average number of shares outstanding (in shares)	120,471,317	118,005,490
Net loss per share	$ (0.05)	$ (0.04)
Diluted:
Weighted average number of shares outstanding (in shares)	120,471,317	118,005,490
Net loss per share	$ (0.05)	$ (0.04)

CONSOLIDATED STATEMENTS OF SHAR

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock [Member]	Accumulated Deficit [Member]	Total
Balances, beginning of period at Dec. 31, 2021	$ 474,181	$ (459,887)	$ 14,294
Balances, beginning of period (in shares) at Dec. 31, 2021	117,189,232
Shares issued, net of offering costs	$ 244		244
Shares issued, net of offering costs (in shares)	401,884
Shares issued (RSUs vested, net of shares withheld)	$ (357)		(357)
Shares issued (RSUs vested, net of shares withheld) (in shares)	889,762
Stock-based compensation	$ 779		779
Net loss		(4,931)	(4,931)
Balances, end of period at Dec. 31, 2022	$ 474,847	(464,818)	10,029
Balances, end of period (in shares) at Dec. 31, 2022	118,480,878
Shares issued, net of offering costs	$ 1,013		1,013
Shares issued, net of offering costs (in shares)	1,710,068
Shares issued (RSUs vested, net of shares withheld)	$ (142)		$ (142)
Shares issued (RSUs vested, net of shares withheld) (in shares)	412,548
Shares issued (DSUs vested) (in shares)	485,000		485,000
Stock-based compensation	$ 636		$ 636
Net loss		(6,585)	(6,585)
Balances, end of period at Dec. 31, 2023	$ 476,354	$ (471,403)	$ 4,951
Balances, end of period (in shares) at Dec. 31, 2023	121,088,494

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Cash flows from operating activities:
Net loss	$ (6,585)	$ (4,931)
Adjustments to reconcile net loss to net cash used in operations:
Depreciation and amortization	40	45
Stock-based compensation	636	779
Gain on disposal of mineral property interests, net		(2,883)
Reduction of provision for environmental liability		(240)
Change in working capital account items:
Other current assets	91	274
Accounts payable, accrued liabilities and other	(43)	(457)
Net cash used in operating activities	(5,861)	(7,413)
Cash flows from investing activities:
Maturities of short-term investments, net		384
Additions to plant and equipment	(51)	(5)
Proceeds from grant of royalty interest	3,000
Proceeds from disposition of royalty interest, net		2,500
Net cash provided by investing activities	2,949	2,879
Cash flows from financing activities:
Proceeds from equity financing, net	1,013	244
Payment of taxes from withheld shares	(142)	(357)
Net cash provided by/(used in) financing activities	871	(113)
Net decrease in cash and cash equivalents	(2,041)	(4,647)
Cash and cash equivalents, beginning of year	8,110	12,757
Cash and cash equivalents, end of year	$ 6,069	$ 8,110

Nature of Operations

Nature of Operations	12 Months Ended
	Dec. 31, 2023
Nature of Operations
Nature Of Operations	1. Nature of Operations ​ Vista Gold Corp. and its subsidiaries operate in the gold mining industry. We are focused on acquisition, exploration and advancement of gold exploration and potential development projects, which may lead to gold production or value-adding strategic transactions such as 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. We do not currently generate recurring positive cash flows from mining operations. ​ The Company’s flagship asset is its 100% owned Mt Todd gold project (“Mt Todd” or the “Project”) in Northern Territory, Australia. In March 2024, we completed an updated feasibility study for Mt Todd and are evaluating alternative development strategies, including a staged development approach. In March 2022, we appointed CIBC Capital Markets as our strategic advisor, and we are advancing a strategic process to seek a partner or other form of transaction for Mt Todd. ​ References to $ are to United States dollars and A$ are to Australian dollars.

Significant Accounting Policies

Significant Accounting Policies and Estimates	12 Months Ended
	Dec. 31, 2023
Significant Accounting Policies and Estimates
Significant Accounting Policies and Estimates	2. Significant Accounting Policies and Estimates ​ Principles of Consolidation ​ The Consolidated Financial Statements include the accounts of Vista and its subsidiaries, all of which are 100%-owned subsidiaries, either directly or indirectly through a subsidiary, and under Vista’s control. All significant intercompany balances and transactions have been eliminated. The Consolidated Financial Statements have been prepared in accordance with U.S. GAAP. ​ Use of Estimates ​ Preparation of the Company’s Consolidated Financial Statements requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, income, and expenses during the reporting period. The more significant areas requiring the use of management estimates and assumptions are: gain recognition, asset impairments, the fair value and accounting treatment of financial instruments including warrants; valuation allowances for deferred tax assets; the fair value and accounting treatment of stock-based compensation; and the provision for environmental liabilities. Management based its estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances. Accordingly, actual results will likely differ from amounts estimated in these financial statements. ​ Cash and Cash Equivalents ​ Cash and cash equivalents include cash on hand and government securities with original maturities of 90 days or less when purchased. ​ Foreign Currency Transactions ​ Our functional currency is the U.S. dollar. Foreign currency transactions denominated in currency other than the functional currency are recorded at the approximate rate of exchange at the transaction date and any gains/(losses) resulting therefrom are recorded in other expense. For each of the years ended December 31, 2023 and 2022, net foreign currency gains/(losses) were insignificant. ​ Short-term Investments ​ Short-term investments consist of securities with original maturity dates greater than 90 days and less than one year. These securities are typically United States or Australian government treasury bills and/or notes. Short-term investments are recorded at amortized cost and are classified as debt securities held-to-maturity as the Company has the intention and ability to hold these instruments until their original maturity date at the time of purchase. ​ Mineral Properties ​ Mineral property acquisition costs, including directly related costs, are capitalized when incurred. After acquisition of a mineral property, associated exploration and evaluation costs are expensed as incurred until mineral reserves ​ Capitalized costs associated with a mineral property will be amortized using the units-of-production method over the estimated life of mineral reserves once sustainable production is achieved. If mineral properties are subsequently sold or abandoned, any unamortized costs will be charged to expense in that period. ​ The recoverability of the carrying values of our mineral properties is dependent upon economic reserves being discovered or developed on the properties, permitting, financing, start-up, and profitable commercial production from, or the sale/lease of, or other strategic transactions related to these properties. Development and/or start-up of mineral properties will depend on, among other things, management’s ability to raise sufficient capital for these purposes. Proceeds received from option or conveyance agreements for unproved properties are ascribed to recovery of the carrying value of the related project until the carrying value reaches zero. Thereafter, any additional proceeds received are recognized as a contract liability (deferred option gain) until control has transferred to the buyer and substantial obligations of the Company have been met, or the related contract terminates. Gains on disposal and grant of royalty interests are recognized in operating income when the Company has completed its significant obligations. ​ We assess the carrying value of mineral properties for impairment whenever information or circumstances indicate the potential for impairment. Such evaluations compare estimated future net cash flows with our carrying costs and future obligations on an undiscounted basis. If it is determined that the estimated future undiscounted cash flows are less than the carrying value of the property, a write-down to the estimated fair value will then be reported in our Consolidated Statement of Income/(Loss) for the period. ​ Impairment ​ Carrying values of long-lived assets, other than mineral properties, are evaluated for impairment when information becomes available that indicates the carrying value may not be recoverable. If it is determined that the fair value is less than the carrying value an impairment charge equal to the difference between the fair value and the carrying value will be recorded in our Consolidated Statements of Income/(Loss). ​ Stock-Based Compensation ​ Under our stock option, long-term incentive, and deferred share unit plans, the Company can grant stock incentive options, restricted share units, and deferred share units to executives, employees, consultants, and non-employee directors as applicable. Compensation expense for such grants is recorded in the Consolidated Statements of Income/(Loss) as a component of exploration, property evaluation and holding costs and corporate administration, with a corresponding increase to Common Shares in the Consolidated Balance Sheets. The fair value of option grants is calculated using the Black-Scholes option pricing model. The fair value of restricted and deferred share units is based on the closing price of our Common Shares on the grant date, or, in certain cases, amounts determined by a Brownian motion pricing model. The expense is based on the fair value of the grant on the grant date and is recognized over the vesting period specified for each grant. Forfeitures of unvested awards for all stock-based compensation result in expense reversal upon forfeiture. ​ Accounting for Income Taxes ​ We account for income taxes by recognizing deferred tax assets and liabilities for differences between the financial statement and tax bases of assets and liabilities at enacted tax rates in effect for the year in which the differences are expected to reverse. Changes in enacted tax rates are recognized in the period that includes the enactment date. Valuation allowances are recorded to reduce deferred tax assets to net amounts estimated to be more likely than not of being realized. ​ The Company evaluates its income tax positions and recognizes a liability for uncertain tax positions that are not more likely than not to be sustained by tax authorities. If the Company were to determine that uncertain tax positions meet the criteria for recognition, an estimated liability and related interest and penalties would be recognized as income tax expense. ​ Fair Value of Financial Instruments ​ Our financial instruments include cash and cash equivalents, accounts payable, and certain other current assets and liabilities. Due to the short-term nature of these financial instruments, carrying amounts approximate fair value. ​ Recent Accounting Pronouncements ​ In November 2023, the Financial Accounting Standards Board issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures ​

Mineral Properties

Mineral Properties	12 Months Ended
	Dec. 31, 2023
Mineral Properties
Mineral Properties	3. Mineral Properties ​ Mt Todd, Northern Territory, Australia ​ Capitalized mineral property values were: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ At December 31, 2023 At December 31, 2022 ​ Mt Todd, Australia ​ $ 2,146 ​ $ 2,146 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Plant and Equipment

Plant and Equipment	12 Months Ended
	Dec. 31, 2023
Plant and Equipment
Plant and Equipment	4. Plant and Equipment ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2023 ​ December 31, 2022 ​ ​ ​ ​ ​ ​ Accumulated ​ ​ ​ ​ ​ ​ ​ Accumulated ​ ​ ​ ​ ​ Cost Depreciation Net Cost Depreciation Net Mt Todd, Australia ​ $ 5,415 ​ $ 5,211 ​ $ 204 ​ $ 5,364 ​ $ 5,171 ​ $ 193 ​ Corporate, United States ​ ​ 303 ​ ​ 303 ​ ​ — ​ ​ 333 ​ ​ 333 ​ ​ — ​ Used mill equipment, Canada ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ ​ $ 5,718 ​ $ 5,514 ​ $ 204 ​ $ 5,697 ​ $ 5,504 ​ $ 193 ​ ​

Other Current Liabilities

Other Current Liabilities	12 Months Ended
	Dec. 31, 2023
Other Current Liabilities
Other Current Liabilities	5. Other Current Liabilities ​ The following table sets forth the Company’s accrued liabilities and other at December 31, 2023 and December 31, 2022: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ At December 31, 2023 At December 31, 2022 ​ Accrued accounts payable ​ $ 152 ​ $ 112 ​ Accrued employee compensation and benefits ​ ​ 597 ​ ​ 652 ​ ​ ​ $ 749 ​ $ 764 ​ ​

Deferred Gain on Grant of Royal

Deferred Gain on Grant of Royalty	12 Months Ended
	Dec. 31, 2023
Deferred Gain on Grant of Royalty
Deferred Gain on Grant of Royalty	6. Deferred Gain on Grant of Royalty ​ On December 13, 2023, Vista Gold Australia Pty. Ltd. (“Vista Gold Australia”), a wholly owned subsidiary of the Company, entered into a Royalty Agreement (the “Royalty Agreement”) with Wheaton Precious Metals (Cayman) Co., an affiliate of Wheaton Precious Metals Corp. (“Wheaton”) in relation to Mt Todd. ​ Pursuant to the terms of the Royalty Agreement, Wheaton agreed to provide Vista with $20,000 of cash to advance Mt Todd and for general corporate purposes, excluding direct expenditures for any project other than Mt Todd. The Royalty is at a rate of 1% of gross revenue from the Project if the completion objectives for the Project are achieved by April 1, 2028. Beginning April 1, 2028, if the completion objectives for the Project are not achieved, the Royalty shall increase annually at a rate of up to 0.13% to a maximum Royalty rate of 2% . Any annual increases beginning April 1, 2028 shall be reduced on a pro rata basis to the extent that Mt Todd has initiated operations but has yet to achieve a completion test at an average daily processing rate of 15,000 tonnes per day. The Royalty rate, the annual increase percentage, and maximum Royalty rate can each be reduced by one-third upon the occurrence of one of the following events: (i) a change of control of Vista Gold Australia occurs prior to April 1, 2028 and Vista Gold Australia provides timely notice and payment to Wheaton of certain amounts; or (ii) payment to Wheaton of the applicable Royalty associated with Vista Gold Australia delivering 3.47 million gold ounces to a third party. The Royalty is payable on production from both the Mt Todd mining and exploration licenses. Wheaton has also been granted a right of first refusal on any royalties, streams or pre-pays pertaining to Mt Todd. ​ The Royalty Agreement provides for Vista Gold Australia to receive a total of $20,000 in three installments. The first installment of $3,000 was received in December 2023. This amount was recorded as a deferred gain on grant of royalty as of December 31, 2023. The second instalment of $7,000 was received from Wheaton after having received approval from the Australian government Foreign Investment Review Board, registration of a secured interest in favor of Wheaton, and satisfaction of other conditions. The secured interest provides for, among other things, a mortgage on the mineral tenements that comprise Mt Todd. The final installment of $10,000 is to be received six months from the date of the first installment provided that Vista Gold Australia has commenced a 6,000 -meter drilling program at Mt Todd and satisfied customary conditions, representations, and warranties. ​

Common Shares

Common Shares	12 Months Ended
	Dec. 31, 2023
Common Shares
Common Shares	7. Common Shares ​ Equity Financing ​ Vista is party to an at-the-market offering agreement (the “ATM Agreement”) with H. C. Wainwright & Co., LLC (“Wainwright”), under which the Company has the right, but was not obligated, to issue and sell Common Shares through Wainwright for aggregate sales proceeds of up to $10,000 (the “ATM Program”). No securities can be offered in Canada under the ATM Agreement. As of December 31, 2023, $8,702 remained available under the ATM Program. ​ During the year ended December 31, 2023 the Company sold 1,710,068 Common Shares for net proceeds of $1,013 under the ATM Program. During the year ended December 31, 2022 the Company sold 401,884 Common Shares for net proceeds of $244 under the ATM Program. Each sale under the ATM Agreement was made pursuant to an “at the market offering” as defined in Rule 415 under the United States Securities Act of 1933, as amended. ​ Other Share Issuances ​ During the years ended December 31, 2023 and 2022, we issued 412,548 and 889,762 Common Shares, respectively, in connection with vesting of restricted share units (“RSUs”). During the year ended December 31, 2023, we issued 485,000 Common Shares in exchange for deferred share units (“DSUs”) held by directors of the Company who retired in 2023. ​ Warrants ​ Warrant activity is summarized in the following table. Intrinsic value is the aggregate value of warrants that were in the money at the end of the period. The warrants were issued as part of a July 2021 public offering and are subject to standard anti-dilution provisions. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted ​ Weighted ​ ​ ​ ​ ​ Average ​ Average ​ ​ ​ Warrants ​ Exercise Price ​ Remaining Life ​ ​ Outstanding Per Share (Years) As of December 31, 2021 ​ 7,408,101 ​ $ 1.25 ​ 2.5 ​ As of December 31, 2022 ​ 7,408,101 ​ $ 1.25 ​ 1.5 ​ As of December 31, 2023 ​ 7,408,101 ​ $ 1.25 ​ 0.5 ​ ​ Stock-Based Compensation ​ The Company’s stock-based compensation plans include: RSUs currently outstanding under the Company’s long-term equity incentive plan (“LTIP”), DSUs issuable pursuant to the Company’s deferred share unit plan (“DSU Plan”) and stock options (“Stock Options”) issuable under the Company’s stock option plan. Stock-based compensation may be issued to our directors, officers, employees and consultants. The maximum number of Common Shares that may be reserved for issuance under the combined stock-based compensation plans is a variable number equal to 10% of the issued and outstanding Common Shares on a non-diluted basis at any one time. Stock-based compensation may be granted from time to time at the discretion of the Board of Directors of the Company (the “Board of Directors”), with vesting provisions as determined by the Board of Directors. ​ Stock-based compensation expense for the years ended December 31, 2023 and 2022 was: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ ​ 2023 2022 RSUs ​ $ 392 ​ $ 507 ​ DSUs ​ ​ 244 ​ ​ 272 ​ ​ ​ $ 636 ​ $ 779 ​ ​ As of December 31, 2023, unrecognized compensation expense for RSUs was $293 , which is expected to be recognized over a weighted average period of 1.2 years. ​ Restricted Share Units ​ The following table summarizes RSU activity: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted Average ​ ​ ​ Number ​ Grant-Date Fair ​ ​ of RSUs Value Per RSU ​ Unvested - December 31, 2021 ​ 1,998,339 $ 0.53 Granted ​ 759,000 ​ ​ 0.59 ​ Cancelled/forfeited ​ (395,569) ​ ​ 0.51 ​ Vested, net of shares withheld ​ (889,762) ​ ​ 0.49 ​ Unvested - December 31, 2022 ​ 1,472,008 $ 0.60 Granted ​ 1,163,000 ​ ​ 0.37 ​ Cancelled/forfeited ​ (335,786) ​ ​ 0.58 ​ Vested, net of shares withheld ​ (412,548) ​ ​ 0.60 ​ Unvested - December 31, 2023 ​ 1,886,674 ​ $ 0.46 ​ ​ During the years ended December 31, 2023 and 2022, the Company withheld shares equivalent to the value of employee withholding tax obligations which resulted from RSUs vesting in the period. Shares withheld are considered cancelled/forfeited. ​ Under the LTIP, a portion of the RSU awards vest on a fixed future date providing the recipient continues to be affiliated with Vista on that date. Other RSU awards vest subject to achievement of certain performance and market criteria, including the accomplishment of certain corporate objectives and the Company’s share price performance. Of the unvested RSUs, approximately 33% will vest based on fixed future dates, and approximately 67% will vest on share-price criteria. The minimum vesting period for RSUs is one year . ​ Deferred Share Units ​ The DSU Plan provides for granting of DSUs to non-employee directors. DSUs vest immediately; however, the Company will issue one Common Share for each DSU only after the non-employee director ceases to be a director of the Company. During the year ended December 31, 2023, the Board of Directors granted 420,000 DSUs and the Company recognized $244 of DSU expense. During the year ended December 31, 2022, the Board of Directors granted 324,000 DSUs and the Company recognized $272 of DSU expense. ​ The following table summarizes DSU activity: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted Average ​ ​ ​ Number of ​ ​ Grant-Date Fair ​ ​ DSUs ​ Value per DSU Outstanding - December 31, 2021 ​ 930,000 ​ $ 0.68 ​ Granted ​ 324,000 ​ ​ 0.84 ​ Outstanding - December 31, 2022 ​ 1,254,000 ​ $ 0.72 ​ Granted ​ 420,000 ​ ​ 0.58 ​ Shares issued to participants ​ (485,000) ​ ​ 0.69 ​ Outstanding - December 31, 2023 ​ 1,189,000 ​ $ 0.68 ​ ​ Stock Options ​ The following table summarizes option activity: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted Average ​ ​ ​ ​ ​ ​ ​ Weighted Average ​ Remaining ​ Aggregate ​ ​ ​ Number of ​ Exercise Price ​ Contractual Term ​ Intrinsic ​ ​ Options Per Option (Years) Value Outstanding - December 31, 2021 ​ 1,367,000 $ 0.71 ​ 1.64 ​ $ 38 ​ Outstanding - December 31, 2022 ​ 1,367,000 $ 0.71 ​ 0.64 ​ $ — ​ Expired ​ (967,000) ​ ​ 0.71 ​ ​ ​ ​ ​ ​ Outstanding - December 31, 2023 ​ 400,000 ​ $ 0.70 ​ 0.47 ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Exercisable - December 31, 2023 ​ 400,000 ​ $ 0.70 ​ 0.47 ​ $ — ​ ​ Weighted Average Common Shares ​ ​ ​ ​ ​ ​ ​ ​ ​ At December 31, ​ ​ 2023 2022 ​ Basic Common Shares ​ 120,471,317 ​ 118,005,490 ​ Effect of dilutive stock-based awards ​ — ​ — ​ Diluted Common Shares ​ 120,471,317 ​ 118,005,490 ​ ​ Unvested RSUs representing 1,886,674 Common Shares, Stock Options to purchase 400,000 Common Shares, warrants to purchase 7,408,101 Common Shares, and vested DSUs representing 1,189,000 unissued Common Shares were outstanding at December 31, 2023 but were not included in the computation of diluted weighted average Common Shares outstanding because their effect would have been anti-dilutive.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2023
Commitments and Contingencies
Commitments and Contingencies	8. Commitments and Contingencies ​ The Mt Todd site was not reclaimed by the predecessor owners when the mine closed in 2000. Reclamation obligations associated with this period and prior to Vista’s acquisition in 2006 are presently the responsibility of the Government of the Northern Territory, Australia (the “NT Government”). At such time as we provide notice to the NT Government that we intend to proceed with development, the Company will then assume these historical rehabilitation liabilities currently stated by the NT Government at A$73 million. ​ Under an agreement with the Jawoyn Association Aboriginal Corporation with respect to Mt Todd, we have agreed to a gross proceeds royalty (“GPR”) ranging between 0.125% and 2.0%, depending on prevailing gold prices and foreign exchange rates, and a 1.0% GPR not tied to gold price or foreign exchange rates. The combined GPR range is 1.125% to 3.0%. ​ Mt Todd is also subject to the Royalty Agreement with Wheaton; see Note 6. ​ Our exploration and development activities are subject to various laws and regulations governing the protection of the environment. These laws and regulations are continually changing and are generally becoming more restrictive. Future expenditures that may be required for compliance with these laws and regulations cannot be predicted. If the Company determines that it is probable that an obligation exists and the amount can be reasonably estimated, a provision for environmental liability would be recorded. This may include reclamation costs attributable to mining claims previously held by the Company should no other responsible or potentially responsible parties be identified. We conduct our operations in a manner designed to minimize effects on the environment and believe our operations comply with applicable laws and regulations in all material respects. During 2022, the Company reviewed the provision for environmental liability for a previously held non-core property and the associated contingent liability and determined that the reclamation costs were neither probable nor could be reasonably estimated. The Company reversed its provision for environmental liability, which resulted in a $240 gain in other income/(loss). ​

Supplemental Cash Flow Informat

Supplemental Cash Flow Information and Material Non-Cash Transactions	12 Months Ended
	Dec. 31, 2023
Supplemental Cash Flow Information and Material Non-Cash Transactions
Supplemental Cash Flow Information and Material Non-Cash Transactions	9. Supplemental Cash Flow Information and Material Non-Cash Transactions ​ As of December 31, 2023 and 2022, all our cash was held in liquid bank deposits and/or government instruments in the United States or Australia. ​ There were no significant non-cash transactions for the years ended December 31, 2023 and 2022.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2023
Income Taxes
Income Taxes	10. Income Taxes ​ The Company’s U.S. and foreign source income/(loss) were: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Years Ended December 31, ​ 2023 ​ 2022 U.S. ​ $ (154) ​ $ (95) ​ Canada ​ ​ (3,097) ​ ​ (272) ​ Other foreign, net ​ ​ (3,334) ​ ​ (4,564) ​ ​ ​ $ (6,585) ​ $ (4,931) ​ ​ During the years ended December 31, 2023 and 2022, the Company recognized $nil current and deferred income tax expense or benefit in each of the U.S., Canada, and other foreign jurisdictions, due to full valuation allowances within each jurisdiction. ​ Rate Reconciliation ​ Reconciliations between the Company’s combined income taxes at statutory rates and the U.S. effective income tax (benefit)/expense were: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Years Ended December 31, ​ 2023 ​ 2022 Income taxed at statutory rates ​ $ (1,383) ​ $ (1,035) ​ Increase (decrease) in taxes from: ​ ​ ​ ​ ​ ​ ​ State Tax ​ ​ 5 ​ ​ (2) ​ Stock-based compensation ​ ​ 117 ​ ​ 120 ​ Meals and Entertainment ​ ​ 1 ​ ​ 1 ​ Imputed interest ​ ​ 60 ​ ​ 16 ​ Other adjustments ​ ​ (7) ​ ​ (16) ​ Expiring NOLs ​ ​ 137 ​ ​ 504 ​ Inflation adjustment ​ ​ — ​ ​ — ​ Prior year provision to actual adjustments ​ ​ 580 ​ ​ 472 ​ Change in U.S. tax rate ​ ​ — ​ ​ 5 ​ Differentials in foreign tax rates ​ ​ (484) ​ ​ (426) ​ Changes in foreign exchange rates ​ ​ (77) ​ ​ 1,421 ​ Changes in valuation allowances affecting income tax expense or benefit ​ ​ 1,051 ​ ​ (1,060) ​ Income tax (benefit)/expense ​ $ — ​ $ — ​ ​ Deferred Taxes ​ Deferred income taxes reflect the net effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. Components of the Company’s deferred tax assets and liabilities were: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ 2023 ​ 2022 Deferred income tax assets ​ ​ ​ ​ ​ ​ ​ Excess tax basis over book basis of property, plant and equipment ​ $ 7,225 ​ $ 7,225 ​ Operating loss carryforwards ​ ​ 40,817 ​ ​ 39,709 ​ Capital loss carryforwards ​ ​ 14,394 ​ ​ 14,394 ​ Capital expenditures ​ ​ 366 ​ ​ 374 ​ Stock compensation ​ ​ 54 ​ ​ 55 ​ VAT recoverable ​ ​ 176 ​ ​ 152 ​ Unrealized foreign exchange gain/loss ​ ​ 7 ​ ​ — ​ Offering costs ​ ​ 157 ​ ​ 229 ​ Accrued vacation ​ ​ 22 ​ ​ 29 ​ Other ​ ​ — ​ ​ — ​ Total future tax assets ​ ​ 63,218 ​ ​ 62,167 ​ Valuation allowance for future tax assets ​ ​ (63,218) ​ ​ (62,167) ​ ​ ​ ​ — ​ ​ — ​ Deferred income tax liabilities ​ ​ ​ ​ ​ ​ ​ Other investments ​ ​ — ​ ​ — ​ ​ ​ ​ — ​ ​ — ​ ​ ​ ​ ​ ​ ​ ​ ​ Total Deferred Taxes ​ $ — ​ $ — ​ ​ Valuation Allowance on Canadian and Foreign Tax Assets ​ We establish a valuation allowance against income tax assets if, based on available information, it is more likely than not that all of the assets will not be realized. The valuation allowances of $63,218 and $62,167 at December 31, 2023 and 2022, respectively, related mainly to operating loss carryforwards where utilization is not more likely than not. The Company periodically assesses both positive and negative evidence to determine whether it is more likely than not that deferred tax assets can be realized prior to expiration. ​ Loss Carryforwards ​ The Company’s tax loss carryforwards expire as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Noncapital Canada U.S. Mexico Barbados Total ​ 2024 ​ ​ — ​ ​ — ​ ​ — ​ ​ 6 ​ ​ 6 ​ 2025 ​ ​ — ​ ​ — ​ ​ 97 ​ ​ 6 ​ ​ 103 ​ 2026 ​ ​ 1,027 ​ ​ — ​ ​ 995 ​ ​ 5 ​ ​ 2,027 ​ 2027 ​ ​ 847 ​ ​ — ​ ​ — ​ ​ 7 ​ ​ 854 ​ 2028 ​ ​ 5,245 ​ ​ — ​ ​ — ​ ​ 7 ​ ​ 5,252 ​ 2029 ​ ​ 4,022 ​ ​ — ​ ​ — ​ ​ 2 ​ ​ 4,024 ​ 2030 ​ ​ 5,032 ​ ​ 1,648 ​ ​ — ​ ​ 12 ​ ​ 6,692 ​ 2031 ​ ​ 3,806 ​ ​ 3,407 ​ ​ 87 ​ ​ — ​ ​ 7,300 ​ 2032 ​ ​ 6,397 ​ ​ 2,323 ​ ​ 60 ​ ​ — ​ ​ 8,780 ​ 2033 ​ ​ 6,185 ​ ​ 3,098 ​ ​ 56 ​ ​ — ​ ​ 9,339 ​ 2034 ​ ​ 4,420 ​ ​ — ​ ​ — ​ ​ — ​ ​ 4,420 ​ 2035 ​ ​ 3,729 ​ ​ 2 ​ ​ — ​ ​ — ​ ​ 3,731 ​ 2036 ​ ​ 2,799 ​ ​ 2,655 ​ ​ — ​ ​ — ​ ​ 5,454 ​ 2037 ​ ​ 1,916 ​ ​ 2,482 ​ ​ — ​ ​ — ​ ​ 4,398 ​ 2038 ​ ​ 2,666 ​ ​ — ​ ​ — ​ ​ — ​ ​ 2,666 ​ 2039 ​ ​ 3,338 ​ ​ — ​ ​ — ​ ​ — ​ ​ 3,338 ​ 2040 ​ ​ 2,829 ​ ​ — ​ ​ — ​ ​ — ​ ​ 2,829 ​ 2041 ​ ​ 3,195 ​ ​ — ​ ​ — ​ ​ — ​ ​ 3,195 ​ 2042 ​ ​ 734 ​ ​ — ​ ​ — ​ ​ — ​ ​ 734 ​ 2043 ​ ​ 2,964 ​ ​ — ​ ​ — ​ ​ — ​ ​ 2,964 ​ ​ ​ $ 61,151 ​ $ 15,615 ​ $ 1,295 ​ $ 45 ​ $ 78,106 ​ ​ U.S. loss carryforwards for tax years beginning in 2018 through 2022 of $2,372, Canadian capital loss carryforwards of $106,623 and Australian net operating losses of $66,759, which do not expire, are not included in the previous table. ​ Tax Statute of Limitations ​ The Company files income tax returns in Canada, U.S. federal and state jurisdictions, and other foreign jurisdictions. There are currently no tax examinations underway for these jurisdictions. Furthermore, the Company is no longer subject to Canadian tax examinations by the Canadian Revenue Agency for years ended on or before December 31, 2019 or U.S. federal income tax examinations by the Internal Revenue Service for years ended on or before December 31, 2019. Some U.S. state and other foreign jurisdictions are still subject to tax examination for years ended on or before December 31, 2018. ​ Although certain tax years are closed under the statute of limitations, tax authorities can still adjust losses being carried forward to open years.

Geographic and Segment Informat

Geographic and Segment Information	12 Months Ended
	Dec. 31, 2023
Geographic and Segment Information
Geographic And Segment Information	11. Geographic and Segment Information ​ The Company has one reportable operating segment, consisting of advancement and development of Mt Todd, which may lead to gold production or value-adding strategic transactions. These activities are currently focused principally in Australia. We reported no revenues during the years ended December 31, 2023 or 2022. Geographic location of mineral properties and plant and equipment is provided in Notes 3 and 4, respectively.

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2023
Subsequent Events
Subsequent Events	12. Subsequent Events ​ On February 27, 2024, the Company received the second instalment of $7,000 from Wheaton under the Royalty Agreement after having received approval from the Australian government Foreign Investment Review Board, registration of a secured interest in favor of Wheaton, and satisfaction of other conditions. The secured interest provides for, among other things, a mortgage on the mineral tenements that comprise Mt Todd.

Significant Accounting Polici_2

Significant Accounting Policies and Estimates (Policies)	12 Months Ended
	Dec. 31, 2023
Significant Accounting Policies and Estimates
Principles of Consolidation	​ Principles of Consolidation ​ The Consolidated Financial Statements include the accounts of Vista and its subsidiaries, all of which are 100%-owned subsidiaries, either directly or indirectly through a subsidiary, and under Vista’s control. All significant intercompany balances and transactions have been eliminated. The Consolidated Financial Statements have been prepared in accordance with U.S. GAAP.
Use of Estimates	Use of Estimates ​ Preparation of the Company’s Consolidated Financial Statements requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, income, and expenses during the reporting period. The more significant areas requiring the use of management estimates and assumptions are: gain recognition, asset impairments, the fair value and accounting treatment of financial instruments including warrants; valuation allowances for deferred tax assets; the fair value and accounting treatment of stock-based compensation; and the provision for environmental liabilities. Management based its estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances. Accordingly, actual results will likely differ from amounts estimated in these financial statements.
Cash and Cash Equivalents	Cash and Cash Equivalents ​ Cash and cash equivalents include cash on hand and government securities with original maturities of 90 days or less when purchased.
Foreign Currency Translations	Foreign Currency Transactions ​ Our functional currency is the U.S. dollar. Foreign currency transactions denominated in currency other than the functional currency are recorded at the approximate rate of exchange at the transaction date and any gains/(losses) resulting therefrom are recorded in other expense. For each of the years ended December 31, 2023 and 2022, net foreign currency gains/(losses) were insignificant.
Short-term Investments	​ Short-term Investments ​ Short-term investments consist of securities with original maturity dates greater than 90 days and less than one year. These securities are typically United States or Australian government treasury bills and/or notes. Short-term investments are recorded at amortized cost and are classified as debt securities held-to-maturity as the Company has the intention and ability to hold these instruments until their original maturity date at the time of purchase.
Mineral Properties	Mineral Properties ​ Mineral property acquisition costs, including directly related costs, are capitalized when incurred. After acquisition of a mineral property, associated exploration and evaluation costs are expensed as incurred until mineral reserves ​ Capitalized costs associated with a mineral property will be amortized using the units-of-production method over the estimated life of mineral reserves once sustainable production is achieved. If mineral properties are subsequently sold or abandoned, any unamortized costs will be charged to expense in that period. ​ The recoverability of the carrying values of our mineral properties is dependent upon economic reserves being discovered or developed on the properties, permitting, financing, start-up, and profitable commercial production from, or the sale/lease of, or other strategic transactions related to these properties. Development and/or start-up of mineral properties will depend on, among other things, management’s ability to raise sufficient capital for these purposes. Proceeds received from option or conveyance agreements for unproved properties are ascribed to recovery of the carrying value of the related project until the carrying value reaches zero. Thereafter, any additional proceeds received are recognized as a contract liability (deferred option gain) until control has transferred to the buyer and substantial obligations of the Company have been met, or the related contract terminates. Gains on disposal and grant of royalty interests are recognized in operating income when the Company has completed its significant obligations. ​ We assess the carrying value of mineral properties for impairment whenever information or circumstances indicate the potential for impairment. Such evaluations compare estimated future net cash flows with our carrying costs and future obligations on an undiscounted basis. If it is determined that the estimated future undiscounted cash flows are less than the carrying value of the property, a write-down to the estimated fair value will then be reported in our Consolidated Statement of Income/(Loss) for the period. ​
Impairment	Impairment ​ Carrying values of long-lived assets, other than mineral properties, are evaluated for impairment when information becomes available that indicates the carrying value may not be recoverable. If it is determined that the fair value is less than the carrying value an impairment charge equal to the difference between the fair value and the carrying value will be recorded in our Consolidated Statements of Income/(Loss).
Stock-Based Compensation	Stock-Based Compensation ​ Under our stock option, long-term incentive, and deferred share unit plans, the Company can grant stock incentive options, restricted share units, and deferred share units to executives, employees, consultants, and non-employee directors as applicable. Compensation expense for such grants is recorded in the Consolidated Statements of Income/(Loss) as a component of exploration, property evaluation and holding costs and corporate administration, with a corresponding increase to Common Shares in the Consolidated Balance Sheets. The fair value of option grants is calculated using the Black-Scholes option pricing model. The fair value of restricted and deferred share units is based on the closing price of our Common Shares on the grant date, or, in certain cases, amounts determined by a Brownian motion pricing model. The expense is based on the fair value of the grant on the grant date and is recognized over the vesting period specified for each grant. Forfeitures of unvested awards for all stock-based compensation result in expense reversal upon forfeiture.
Accounting for Income Taxes	Accounting for Income Taxes ​ We account for income taxes by recognizing deferred tax assets and liabilities for differences between the financial statement and tax bases of assets and liabilities at enacted tax rates in effect for the year in which the differences are expected to reverse. Changes in enacted tax rates are recognized in the period that includes the enactment date. Valuation allowances are recorded to reduce deferred tax assets to net amounts estimated to be more likely than not of being realized. ​ The Company evaluates its income tax positions and recognizes a liability for uncertain tax positions that are not more likely than not to be sustained by tax authorities. If the Company were to determine that uncertain tax positions meet the criteria for recognition, an estimated liability and related interest and penalties would be recognized as income tax expense.
Fair Value of Financial Instruments	Fair Value of Financial Instruments ​ Our financial instruments include cash and cash equivalents, accounts payable, and certain other current assets and liabilities. Due to the short-term nature of these financial instruments, carrying amounts approximate fair value.
Recent Accounting Pronouncements	Recent Accounting Pronouncements ​ In November 2023, the Financial Accounting Standards Board issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures ​

Mineral Properties (Tables)

Mineral Properties (Tables)	12 Months Ended
	Dec. 31, 2023
Mineral Properties
Schedule of Mineral Properties	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ At December 31, 2023 At December 31, 2022 ​ Mt Todd, Australia ​ $ 2,146 ​ $ 2,146 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Plant and Equipment (Tables)

Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2023
Plant and Equipment
Schedule Of Plant And Equipment	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2023 ​ December 31, 2022 ​ ​ ​ ​ ​ ​ Accumulated ​ ​ ​ ​ ​ ​ ​ Accumulated ​ ​ ​ ​ ​ Cost Depreciation Net Cost Depreciation Net Mt Todd, Australia ​ $ 5,415 ​ $ 5,211 ​ $ 204 ​ $ 5,364 ​ $ 5,171 ​ $ 193 ​ Corporate, United States ​ ​ 303 ​ ​ 303 ​ ​ — ​ ​ 333 ​ ​ 333 ​ ​ — ​ Used mill equipment, Canada ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ — ​ ​ ​ $ 5,718 ​ $ 5,514 ​ $ 204 ​ $ 5,697 ​ $ 5,504 ​ $ 193 ​ ​

Other Current Liabilities (Tabl

Other Current Liabilities (Tables)	12 Months Ended
	Dec. 31, 2023
Other Current Liabilities
Schedule of accrued liabilities	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ At December 31, 2023 At December 31, 2022 ​ Accrued accounts payable ​ $ 152 ​ $ 112 ​ Accrued employee compensation and benefits ​ ​ 597 ​ ​ 652 ​ ​ ​ $ 749 ​ $ 764 ​ ​

Common Shares (Tables)

Common Shares (Tables)	12 Months Ended
	Dec. 31, 2023
Common Shares
Summary of outstanding warrants	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted ​ Weighted ​ ​ ​ ​ ​ Average ​ Average ​ ​ ​ Warrants ​ Exercise Price ​ Remaining Life ​ ​ Outstanding Per Share (Years) As of December 31, 2021 ​ 7,408,101 ​ $ 1.25 ​ 2.5 ​ As of December 31, 2022 ​ 7,408,101 ​ $ 1.25 ​ 1.5 ​ As of December 31, 2023 ​ 7,408,101 ​ $ 1.25 ​ 0.5 ​
Summary of stock-based compensation expense	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Year Ended December 31, ​ ​ 2023 2022 RSUs ​ $ 392 ​ $ 507 ​ DSUs ​ ​ 244 ​ ​ 272 ​ ​ ​ $ 636 ​ $ 779 ​
Summary of restricted stock unit activity	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted Average ​ ​ ​ Number ​ Grant-Date Fair ​ ​ of RSUs Value Per RSU ​ Unvested - December 31, 2021 ​ 1,998,339 $ 0.53 Granted ​ 759,000 ​ ​ 0.59 ​ Cancelled/forfeited ​ (395,569) ​ ​ 0.51 ​ Vested, net of shares withheld ​ (889,762) ​ ​ 0.49 ​ Unvested - December 31, 2022 ​ 1,472,008 $ 0.60 Granted ​ 1,163,000 ​ ​ 0.37 ​ Cancelled/forfeited ​ (335,786) ​ ​ 0.58 ​ Vested, net of shares withheld ​ (412,548) ​ ​ 0.60 ​ Unvested - December 31, 2023 ​ 1,886,674 ​ $ 0.46 ​
Summary of deferred stock units	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted Average ​ ​ ​ Number of ​ ​ Grant-Date Fair ​ ​ DSUs ​ Value per DSU Outstanding - December 31, 2021 ​ 930,000 ​ $ 0.68 ​ Granted ​ 324,000 ​ ​ 0.84 ​ Outstanding - December 31, 2022 ​ 1,254,000 ​ $ 0.72 ​ Granted ​ 420,000 ​ ​ 0.58 ​ Shares issued to participants ​ (485,000) ​ ​ 0.69 ​ Outstanding - December 31, 2023 ​ 1,189,000 ​ $ 0.68 ​
Summary of option activity	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted Average ​ ​ ​ ​ ​ ​ ​ Weighted Average ​ Remaining ​ Aggregate ​ ​ ​ Number of ​ Exercise Price ​ Contractual Term ​ Intrinsic ​ ​ Options Per Option (Years) Value Outstanding - December 31, 2021 ​ 1,367,000 $ 0.71 ​ 1.64 ​ $ 38 ​ Outstanding - December 31, 2022 ​ 1,367,000 $ 0.71 ​ 0.64 ​ $ — ​ Expired ​ (967,000) ​ ​ 0.71 ​ ​ ​ ​ ​ ​ Outstanding - December 31, 2023 ​ 400,000 ​ $ 0.70 ​ 0.47 ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Exercisable - December 31, 2023 ​ 400,000 ​ $ 0.70 ​ 0.47 ​ $ — ​
Schedule of weighted average common shares	​ ​ ​ ​ ​ ​ ​ ​ ​ At December 31, ​ ​ 2023 2022 ​ Basic Common Shares ​ 120,471,317 ​ 118,005,490 ​ Effect of dilutive stock-based awards ​ — ​ — ​ Diluted Common Shares ​ 120,471,317 ​ 118,005,490 ​

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2023
Income Taxes
Schedule of income/(loss) before income tax, domestic and foreign	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Years Ended December 31, ​ 2023 ​ 2022 U.S. ​ $ (154) ​ $ (95) ​ Canada ​ ​ (3,097) ​ ​ (272) ​ Other foreign, net ​ ​ (3,334) ​ ​ (4,564) ​ ​ ​ $ (6,585) ​ $ (4,931) ​
Schedule of effective income tax rate reconciliation	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Years Ended December 31, ​ 2023 ​ 2022 Income taxed at statutory rates ​ $ (1,383) ​ $ (1,035) ​ Increase (decrease) in taxes from: ​ ​ ​ ​ ​ ​ ​ State Tax ​ ​ 5 ​ ​ (2) ​ Stock-based compensation ​ ​ 117 ​ ​ 120 ​ Meals and Entertainment ​ ​ 1 ​ ​ 1 ​ Imputed interest ​ ​ 60 ​ ​ 16 ​ Other adjustments ​ ​ (7) ​ ​ (16) ​ Expiring NOLs ​ ​ 137 ​ ​ 504 ​ Inflation adjustment ​ ​ — ​ ​ — ​ Prior year provision to actual adjustments ​ ​ 580 ​ ​ 472 ​ Change in U.S. tax rate ​ ​ — ​ ​ 5 ​ Differentials in foreign tax rates ​ ​ (484) ​ ​ (426) ​ Changes in foreign exchange rates ​ ​ (77) ​ ​ 1,421 ​ Changes in valuation allowances affecting income tax expense or benefit ​ ​ 1,051 ​ ​ (1,060) ​ Income tax (benefit)/expense ​ $ — ​ $ — ​
Schedule of deferred tax assets and liabilities	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, ​ 2023 ​ 2022 Deferred income tax assets ​ ​ ​ ​ ​ ​ ​ Excess tax basis over book basis of property, plant and equipment ​ $ 7,225 ​ $ 7,225 ​ Operating loss carryforwards ​ ​ 40,817 ​ ​ 39,709 ​ Capital loss carryforwards ​ ​ 14,394 ​ ​ 14,394 ​ Capital expenditures ​ ​ 366 ​ ​ 374 ​ Stock compensation ​ ​ 54 ​ ​ 55 ​ VAT recoverable ​ ​ 176 ​ ​ 152 ​ Unrealized foreign exchange gain/loss ​ ​ 7 ​ ​ — ​ Offering costs ​ ​ 157 ​ ​ 229 ​ Accrued vacation ​ ​ 22 ​ ​ 29 ​ Other ​ ​ — ​ ​ — ​ Total future tax assets ​ ​ 63,218 ​ ​ 62,167 ​ Valuation allowance for future tax assets ​ ​ (63,218) ​ ​ (62,167) ​ ​ ​ ​ — ​ ​ — ​ Deferred income tax liabilities ​ ​ ​ ​ ​ ​ ​ Other investments ​ ​ — ​ ​ — ​ ​ ​ ​ — ​ ​ — ​ ​ ​ ​ ​ ​ ​ ​ ​ Total Deferred Taxes ​ $ — ​ $ — ​
Summary of expiring loss carryforwards	The Company’s tax loss carryforwards expire as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Noncapital Canada U.S. Mexico Barbados Total ​ 2024 ​ ​ — ​ ​ — ​ ​ — ​ ​ 6 ​ ​ 6 ​ 2025 ​ ​ — ​ ​ — ​ ​ 97 ​ ​ 6 ​ ​ 103 ​ 2026 ​ ​ 1,027 ​ ​ — ​ ​ 995 ​ ​ 5 ​ ​ 2,027 ​ 2027 ​ ​ 847 ​ ​ — ​ ​ — ​ ​ 7 ​ ​ 854 ​ 2028 ​ ​ 5,245 ​ ​ — ​ ​ — ​ ​ 7 ​ ​ 5,252 ​ 2029 ​ ​ 4,022 ​ ​ — ​ ​ — ​ ​ 2 ​ ​ 4,024 ​ 2030 ​ ​ 5,032 ​ ​ 1,648 ​ ​ — ​ ​ 12 ​ ​ 6,692 ​ 2031 ​ ​ 3,806 ​ ​ 3,407 ​ ​ 87 ​ ​ — ​ ​ 7,300 ​ 2032 ​ ​ 6,397 ​ ​ 2,323 ​ ​ 60 ​ ​ — ​ ​ 8,780 ​ 2033 ​ ​ 6,185 ​ ​ 3,098 ​ ​ 56 ​ ​ — ​ ​ 9,339 ​ 2034 ​ ​ 4,420 ​ ​ — ​ ​ — ​ ​ — ​ ​ 4,420 ​ 2035 ​ ​ 3,729 ​ ​ 2 ​ ​ — ​ ​ — ​ ​ 3,731 ​ 2036 ​ ​ 2,799 ​ ​ 2,655 ​ ​ — ​ ​ — ​ ​ 5,454 ​ 2037 ​ ​ 1,916 ​ ​ 2,482 ​ ​ — ​ ​ — ​ ​ 4,398 ​ 2038 ​ ​ 2,666 ​ ​ — ​ ​ — ​ ​ — ​ ​ 2,666 ​ 2039 ​ ​ 3,338 ​ ​ — ​ ​ — ​ ​ — ​ ​ 3,338 ​ 2040 ​ ​ 2,829 ​ ​ — ​ ​ — ​ ​ — ​ ​ 2,829 ​ 2041 ​ ​ 3,195 ​ ​ — ​ ​ — ​ ​ — ​ ​ 3,195 ​ 2042 ​ ​ 734 ​ ​ — ​ ​ — ​ ​ — ​ ​ 734 ​ 2043 ​ ​ 2,964 ​ ​ — ​ ​ — ​ ​ — ​ ​ 2,964 ​ ​ ​ $ 61,151 ​ $ 15,615 ​ $ 1,295 ​ $ 45 ​ $ 78,106 ​

Nature of Operations (Details)

Nature of Operations (Details)	12 Months Ended
	Dec. 31, 2023
Mt Todd, Australia
Property, Plant and Equipment [Line Items]
Percentage of ownership in project	100%

Significant Accounting Polici_3

Significant Accounting Policies and Estimates (Details)	12 Months Ended
	Dec. 31, 2023 segment
Significant Accounting Policies and Estimates
Number of reportable segments	1

Mineral Properties - Mt. Todd,

Mineral Properties - Mt. Todd, Northern Territory, Australia (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Mineral Properties, Net	$ 2,146	$ 2,146
Mt Todd, Australia
Property, Plant and Equipment [Line Items]
Mineral Properties, Net	$ 2,146	$ 2,146

Plant and Equipment (Details)

Plant and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Cost	$ 5,718	$ 5,697
Accumulated depreciation	5,514	5,504
Net	204	193
Mt Todd, Australia
Property, Plant and Equipment [Line Items]
Cost	5,415	5,364
Accumulated depreciation	5,211	5,171
Net	204	193
Corporate, United States
Property, Plant and Equipment [Line Items]
Cost	303	333
Accumulated depreciation	303	333
Net	0	0
Used mill equipment, Canada
Property, Plant and Equipment [Line Items]
Cost	0	0
Accumulated depreciation	0	0
Net	$ 0	$ 0

Other Current Liabilities - Acc

Other Current Liabilities - Accrued Liabilities and Other (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Other Current Liabilities
Accrued accounts payable	$ 152	$ 112
Accrued employee compensation and benefits	597	652
Accrued Liabilities, Current, Total	$ 749	$ 764

Deferred Gain on Grant of Roy_2

Deferred Gain on Grant of Royalty (Details) - Vista Australia - Wheaton - Mt Todd oz in Thousands		1 Months Ended
	Dec. 13, 2023 USD ($) installment oz t	Dec. 31, 2023 USD ($)	Feb. 27, 2024 USD ($)
Deferred Gain on Grant of Royalty [Line Items]
Cash advance	$ 20,000,000
Royalty rate	1%
Increase in royalty rate per annum	0.13%
Threshold limit of average daily processing rate per day | t	15,000
Reduction in royalty rate upon occurrence of events	33.33%
Royalty Agreement Deliverable Benchmark, Commodity Amount | oz	3,470
Consideration eligible to receive	$ 20,000,000
Number of installments for consideration | installment	3
First installment amount received		$ 3,000,000
Period considered for third installment from the date of first installment		6 months
Size of drilling program	6,000
Subsequent Event [Member]
Deferred Gain on Grant of Royalty [Line Items]
Second installment amount			$ 7,000,000
Scenario, Plan
Deferred Gain on Grant of Royalty [Line Items]
Third installment amount		$ 10,000
Maximum
Deferred Gain on Grant of Royalty [Line Items]
Royalty rate	2%

Common Shares - Equity Financin

Common Shares - Equity Financings (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) security shares	Dec. 31, 2022 USD ($) shares
Subsidiary, Sale of Stock [Line Items]
Proceeds from issuance of common shares	$ 1,013	$ 244
At-The-Market Offering Agreement [Member] | H. C. Wainwright And Co., LLC [Member]
Subsidiary, Sale of Stock [Line Items]
Number of shares issued | shares	1,710,068	401,884
Proceeds from issuance of common shares	$ 1,013	$ 244
Threshold of aggregate sales proceeds	10,000
Remaining threshold of aggregate sales proceeds	$ 8,702
Offers or sales of common shares under Agreement to be made in Canada | security	0

Common Shares - Share Issuances

Common Shares - Share Issuances (Details) - shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Common Shares
Shares issued (RSUs vested and options (in shares)	412,548	889,762
Shares issued (DSUs vested) (in shares)	485,000

Common Shares - Warrants (Detai

Common Shares - Warrants (Details) - Warrants [Member] - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Class of Warrant or Right [Line Items]
Warrants outstanding, beginning of period (in shares)	7,408,101	7,408,101
Warrants outstanding, end of period (in shares)	7,408,101	7,408,101	7,408,101
Weighted average exercise price per share, Beginning of the period	$ 1.25	$ 1.25
Weighted average exercise price per share, End of the period	$ 1.25	$ 1.25	$ 1.25
Weighted average remaining life, warrants outstanding	6 months	1 year 6 months	2 years 6 months

Common Shares - Stock-Based Com

Common Shares - Stock-Based Compensation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of issued and outstanding Common Shares	10%
Stock-based compensation expense	$ 636	$ 779
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	392	507
Deferred Stock Units (DSU) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 244	$ 272

Common Shares - Unrecognized Co

Common Shares - Unrecognized Compensation (Details) - Restricted Stock Units (RSUs) [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense related to unvested awards	$ 293
Weighted average unrecognized compensation recognition period	1 year 2 months 12 days

Common Shares - Summary Of Rest

Common Shares - Summary Of Restricted Stock Units Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payment of taxes from withheld shares	$ 142	$ 357
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested, Number of units, beginning of period (in shares)	1,472,008	1,998,339
Granted, Number of units (in shares)	1,163,000	759,000
Cancelled/forfeited, Number of units (in shares)	(335,786)	(395,569)
Vested, net of shares withheld, Number of units (in shares)	(412,548)	(889,762)
Unvested, Number of units, end of period (in shares)	1,886,674	1,472,008
Outstanding, weighted average fair value, beginning of period (in dollars per share)	$ 0.60	$ 0.53
Granted, Weighted average fair value (in dollars per share)	0.37	0.59
Cancelled/forfeited, Weighted average fair value (in dollars per share)	0.58	0.51
Vested, net of shares withheld, Weighted average fair value (in dollars per share)	0.60	0.49
Unvested, weighted average fair value, end of period (in dollars per share)	$ 0.46	$ 0.60
Restricted Stock Units (RSUs) [Member] | Fixed future date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting (as a percent)	33%
Restricted Stock Units (RSUs) [Member] | Market criteria
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting (as a percent)	67%
Restricted Stock Units (RSUs) [Member] | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year

Common Shares - Summary Of Defe

Common Shares - Summary Of Deferred Share Units Activity (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) $ / shares shares	Dec. 31, 2022 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense | $	$ 636	$ 779
Deferred Stock Units (DSU) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of common shares issues for each DSU (at end of board members' team).	1
Unvested, Number of units, beginning of period (in shares) | shares	1,254,000	930,000
Granted, Number of units (in shares) | shares	420,000	324,000
Shares issued to participants | shares	(485,000)
Unvested, Number of units, end of period (in shares) | shares	1,189,000	1,254,000
Outstanding, weighted average fair value, beginning of period (in dollars per share) | $ / shares	$ 0.72	$ 0.68
Granted, Weighted average fair value (in dollars per share) | $ / shares	0.58	0.84
Shares issued to participants, Weighted average grant-date fair value (in dollars per share) | $ / shares	0.69
Unvested, weighted average fair value, end of period (in dollars per share) | $ / shares	$ 0.68	$ 0.72
Allocated Share-based Compensation Expense | $	$ 244	$ 272

Common Shares - Summary Of Opti

Common Shares - Summary Of Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Common Shares
Number of options, beginning of period (in shares)	1,367,000	1,367,000
Number of options, Expired (in shares)	(967,000)
Number of options, end of period (in shares)	400,000	1,367,000	1,367,000
Number of options, Exercisable (in shares)	400,000
Weighted average exercise price per option, beginning of period (in dollars per share)	$ 0.71	$ 0.71
Weighted average exercise price per option, Expired (in dollars per share)	0.71
Weighted average exercise price per option, end of period (in dollars per share)	0.70	$ 0.71	$ 0.71
Weighted average exercise price, Exercisable (in dollars per share)	$ 0.70
Weighted average remaining contractual term, Outstanding	5 months 19 days	7 months 20 days	1 year 7 months 20 days
Weighted average remaining contractual term, Exercisable	5 months 19 days
Aggregate intrinsic value, Outstanding, beginning of period (in dollars)		$ 38
Aggregate intrinsic value, Outstanding, end of period (in dollars)			$ 38

Common Shares - Weighted Averag

Common Shares - Weighted Average (Details) - shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Common Shares
Basic Common Shares	120,471,317	118,005,490
Effect of dilutive stock-based awards	0	0
Diluted Common Shares	120,471,317	118,005,490

Common Shares - Anti-dilutive (

Common Shares - Anti-dilutive (Details)	12 Months Ended
	Dec. 31, 2023 shares
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive shares outstanding	400,000
Restricted Stock Units (RSUs) [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive shares outstanding	1,886,674
Warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Class of Warrant or Right, Number of Securities	7,408,101
Deferred Stock Units (DSU) [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive shares outstanding	1,189,000

Commitments and Contingencies (

Commitments and Contingencies (Details) - 12 months ended Dec. 31, 2023 $ in Thousands, $ in Millions	USD ($)	AUD ($)
Loss Contingencies [Line Items]
Accrual for Environmental Loss Contingencies, Revision in Estimates	$ 240
Mt Todd, Australia | Scenario, Plan
Loss Contingencies [Line Items]
Mine Reclamation and Closing Liability, Noncurrent		$ 73
Mt Todd, Australia | Scenario, Plan | Jawoyn Association Aboriginal Corporation
Loss Contingencies [Line Items]
Percentage of royalty on gold	1%
Mt Todd, Australia | Scenario, Plan | Minimum | Jawoyn Association Aboriginal Corporation
Loss Contingencies [Line Items]
Gross Proceeds Royalty, Additional Contingent Gross Proceeds Royalty, Percent		0.125%
Gross Proceeds Royalty, Including Contingent Additional Gross Proceeds Royalty, Percent		1.125%
Mt Todd, Australia | Scenario, Plan | Maximum | Jawoyn Association Aboriginal Corporation
Loss Contingencies [Line Items]
Gross Proceeds Royalty, Additional Contingent Gross Proceeds Royalty, Percent		2%
Gross Proceeds Royalty, Including Contingent Additional Gross Proceeds Royalty, Percent		3%

Income Taxes - Source of Income

Income Taxes - Source of Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Loss before income taxes	$ (6,585)	$ (4,931)
U.S.
Income (loss) before income taxes, domestic	(154)	(95)
Canada
Income (loss) before income taxes, foreign	(3,097)	(272)
Other Foreign
Income (loss) before income taxes, foreign	$ (3,334)	$ (4,564)

Income Taxes - Deferred Tax Exp

Income Taxes - Deferred Tax Expense (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
U.S.
Current income tax expense (benefit)
Deferred income tax expense (benefit)
Canada
Current income tax expense (benefit)
Deferred income tax expense (benefit)
Other Foreign
Current income tax expense (benefit)
Deferred income tax expense (benefit)

Income Taxes - Rate Reconciliat

Income Taxes - Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Income taxed at statutory rates	$ (1,383)	$ (1,035)
State Tax	5	(2)
Stock-based compensation	117	120
Meals and Entertainment	1	1
Imputed interest	60	16
Other adjustments	(7)	(16)
Expiration of NOLs	137	504
Inflation adjustment	0	0
Prior year provision to actual adjustments	580	472
Change in U.S. tax rate	0	5
Differentials in foreign tax rates	(484)	(426)
Changes in foreign exchange rates	(77)	1,421
Changes in valuation allowances affecting income tax expense or benefit	1,051	(1,060)
Income tax (benefit)/expense	$ 0	$ 0

Income Taxes - Deferred Tax Ass

Income Taxes - Deferred Tax Assets Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Components of Deferred Tax Assets and Liabilities [Abstract]
Excess tax basis over book basis of property, plant, and equipment	$ 7,225	$ 7,225
Operating loss carryforwards	40,817	39,709
Capital loss carryforwards	14,394	14,394
Capital expenditures	366	374
Stock compensation	54	55
VAT recoverable	176	152
Unrealized foreign exchange gain/loss	7	0
Offering costs	157	229
Accrued vacation	22	29
Other	0	0
Total future tax assets	63,218	62,167
Valuation allowance for future tax assets	(63,218)	(62,167)
Total income tax assets	0	0
Other investments	0	0
Total deferred income tax liabilities	0	0
Total Deferred Taxes	$ 0	$ 0

Income Taxes - Operating Loss C

Income Taxes - Operating Loss Carryforward Expirations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2018
Operating Loss Carryforwards [Line Items]
Total	$ 78,106
Canada
Operating Loss Carryforwards [Line Items]
Expiring noncapital loss carryforwards	61,151
Capital loss carryforwards		$ 106,623
U.S.
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards		2,372
Expiring net operating loss carryforwards	15,615
Mexico
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	1,295
Barbados
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	45
Australia
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards		$ 66,759
Tax Year 2024
Operating Loss Carryforwards [Line Items]
Total	6
Tax Year 2024 | Canada
Operating Loss Carryforwards [Line Items]
Expiring noncapital loss carryforwards	0
Tax Year 2024 | U.S.
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2024 | Mexico
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2024 | Barbados
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	6
Tax Year 2025
Operating Loss Carryforwards [Line Items]
Total	103
Tax Year 2025 | Canada
Operating Loss Carryforwards [Line Items]
Expiring noncapital loss carryforwards	0
Tax Year 2025 | U.S.
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2025 | Mexico
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	97
Tax Year 2025 | Barbados
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	6
Tax Year 2026
Operating Loss Carryforwards [Line Items]
Total	2,027
Tax Year 2026 | Canada
Operating Loss Carryforwards [Line Items]
Expiring noncapital loss carryforwards	1,027
Tax Year 2026 | U.S.
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2026 | Mexico
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	995
Tax Year 2026 | Barbados
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	5
Tax Year 2027
Operating Loss Carryforwards [Line Items]
Total	854
Tax Year 2027 | Canada
Operating Loss Carryforwards [Line Items]
Expiring noncapital loss carryforwards	847
Tax Year 2027 | U.S.
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2027 | Mexico
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2027 | Barbados
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	7
Tax Year 2028
Operating Loss Carryforwards [Line Items]
Total	5,252
Tax Year 2028 | Canada
Operating Loss Carryforwards [Line Items]
Expiring noncapital loss carryforwards	5,245
Tax Year 2028 | U.S.
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2028 | Mexico
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2028 | Barbados
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	7
Tax Year 2029
Operating Loss Carryforwards [Line Items]
Total	4,024
Tax Year 2029 | Canada
Operating Loss Carryforwards [Line Items]
Expiring noncapital loss carryforwards	4,022
Tax Year 2029 | U.S.
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2029 | Mexico
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2029 | Barbados
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	2
Tax Year 2030
Operating Loss Carryforwards [Line Items]
Total	6,692
Tax Year 2030 | Canada
Operating Loss Carryforwards [Line Items]
Expiring noncapital loss carryforwards	5,032
Tax Year 2030 | U.S.
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	1,648
Tax Year 2030 | Mexico
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2030 | Barbados
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	12
Tax Year 2031
Operating Loss Carryforwards [Line Items]
Total	7,300
Tax Year 2031 | Canada
Operating Loss Carryforwards [Line Items]
Expiring noncapital loss carryforwards	3,806
Tax Year 2031 | U.S.
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	3,407
Tax Year 2031 | Mexico
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	87
Tax Year 2031 | Barbados
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2032
Operating Loss Carryforwards [Line Items]
Total	8,780
Tax Year 2032 | Canada
Operating Loss Carryforwards [Line Items]
Expiring noncapital loss carryforwards	6,397
Tax Year 2032 | U.S.
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	2,323
Tax Year 2032 | Mexico
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	60
Tax Year 2032 | Barbados
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2033
Operating Loss Carryforwards [Line Items]
Total	9,339
Tax Year 2033 | Canada
Operating Loss Carryforwards [Line Items]
Expiring noncapital loss carryforwards	6,185
Tax Year 2033 | U.S.
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	3,098
Tax Year 2033 | Mexico
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	56
Tax Year 2033 | Barbados
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2034
Operating Loss Carryforwards [Line Items]
Total	4,420
Tax Year 2034 | Canada
Operating Loss Carryforwards [Line Items]
Expiring noncapital loss carryforwards	4,420
Tax Year 2034 | U.S.
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2034 | Mexico
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2034 | Barbados
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax year 2035
Operating Loss Carryforwards [Line Items]
Total	3,731
Tax year 2035 | Canada
Operating Loss Carryforwards [Line Items]
Expiring noncapital loss carryforwards	3,729
Tax year 2035 | U.S.
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	2
Tax year 2035 | Mexico
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax year 2035 | Barbados
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2036
Operating Loss Carryforwards [Line Items]
Total	5,454
Tax Year 2036 | Canada
Operating Loss Carryforwards [Line Items]
Expiring noncapital loss carryforwards	2,799
Tax Year 2036 | U.S.
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	2,655
Tax Year 2036 | Mexico
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2036 | Barbados
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2037
Operating Loss Carryforwards [Line Items]
Total	4,398
Tax Year 2037 | Canada
Operating Loss Carryforwards [Line Items]
Expiring noncapital loss carryforwards	1,916
Tax Year 2037 | U.S.
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	2,482
Tax Year 2037 | Mexico
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2037 | Barbados
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2038
Operating Loss Carryforwards [Line Items]
Total	2,666
Tax Year 2038 | Canada
Operating Loss Carryforwards [Line Items]
Expiring noncapital loss carryforwards	2,666
Tax Year 2038 | U.S.
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2038 | Mexico
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2038 | Barbados
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2039
Operating Loss Carryforwards [Line Items]
Total	3,338
Tax Year 2039 | Canada
Operating Loss Carryforwards [Line Items]
Expiring noncapital loss carryforwards	3,338
Tax Year 2039 | U.S.
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2039 | Mexico
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2039 | Barbados
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2040
Operating Loss Carryforwards [Line Items]
Total	2,829
Tax Year 2040 | Canada
Operating Loss Carryforwards [Line Items]
Expiring noncapital loss carryforwards	2,829
Tax Year 2040 | U.S.
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2040 | Mexico
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2040 | Barbados
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2041
Operating Loss Carryforwards [Line Items]
Total	3,195
Tax Year 2041 | Canada
Operating Loss Carryforwards [Line Items]
Expiring noncapital loss carryforwards	3,195
Tax Year 2041 | U.S.
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2041 | Mexico
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2041 | Barbados
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2042
Operating Loss Carryforwards [Line Items]
Total	734
Tax Year 2042 | Canada
Operating Loss Carryforwards [Line Items]
Expiring noncapital loss carryforwards	734
Tax Year 2042 | U.S.
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2042 | Mexico
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2042 | Barbados
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2043
Operating Loss Carryforwards [Line Items]
Total	2,964
Tax Year 2043 | Canada
Operating Loss Carryforwards [Line Items]
Expiring noncapital loss carryforwards	2,964
Tax Year 2043 | U.S.
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2043 | Mexico
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	0
Tax Year 2043 | Barbados
Operating Loss Carryforwards [Line Items]
Expiring net operating loss carryforwards	$ 0

Geographic and Segment Inform_2

Geographic and Segment Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) segment	Dec. 31, 2022 USD ($)
Geographic and Segment Information
Number of reportable segments | segment	1
Revenues | $	$ 0	$ 0

Subsequent Events (Details)

Subsequent Events (Details) $ in Thousands	Feb. 27, 2024 USD ($)
Subsequent Event [Member] | Vista Australia | Wheaton | Mt Todd
Subsequent Event [Line Items]
Second installment amount	$ 7,000

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Pay vs Performance Disclosure
Net Income (Loss)	$ (6,585)	$ (4,931)

Insider Trading Arrangements

Insider Trading Arrangements	12 Months Ended
	Dec. 31, 2023
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false