75000 - Document - Document And Entity Information
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75010 - Statement - Consolidated Balance Sheets
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75020 - Statement - Consolidated Balance Sheets (Parentheticals)
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75030 - Statement - Consolidated Statements of Operations
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75040 - Statement - Consolidated Statements of Cash Flows
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75050 - Statement - Consolidated Statements of Stockholders' Equity (Defitcit)
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75060 - Disclosure - Cybersecurity Risk Management, Strategy, and Governance
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995455 - Disclosure - Note 1 - Organization and Business
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995465 - Disclosure - Note 2 - Basis of Presentation
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995475 - Disclosure - Note 3 - Liquidity
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995485 - Disclosure - Note 4 - Summary of Significant Accounting Policies
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995495 - Disclosure - Note 5 - Prepaid Expenses and Other
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995505 - Disclosure - Note 6 - Net Loss Per Share
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995515 - Disclosure - Note 7 - Stockholders' Equity
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995525 - Disclosure - Note 8 - Acquisitions
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995535 - Disclosure - Note 9 - Property & Equipment
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995545 - Disclosure - Note 10 - Investment in Peak Gold JV
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995555 - Disclosure - Note 11 - Stock Based Compensation
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995565 - Disclosure - Note 12 - Commitments and Contingencies
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995575 - Disclosure - Note 13 - Income Taxes
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995585 - Disclosure - Note 14 - Debt
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995595 - Disclosure - Note 15 - Derivatives and Hedging Activities
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995605 - Disclosure - Note 16 - General and Administrative Expenses
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995615 - Disclosure - Note 17 - Segments
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995625 - Disclosure - Note 18 - Related Party Transactions
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995635 - Disclosure - Note 19 - Subsequent Events
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995645 - Disclosure - Note 19 - Transition Period Comparative Data
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995655 - Disclosure - Significant Accounting Policies (Policies)
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995665 - Disclosure - Note 4 - Summary of Significant Accounting Policies (Tables)
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995675 - Disclosure - Note 6 - Net Loss Per Share (Tables)
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995685 - Disclosure - Note 9 - Property & Equipment (Tables)
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995695 - Disclosure - Note 10 - Investment in Peak Gold JV (Tables)
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995705 - Disclosure - Note 11 - Stock Based Compensation (Tables)
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995715 - Disclosure - Note 13 - Income Taxes (Tables)
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995725 - Disclosure - Note 14 - Debt (Tables)
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995735 - Disclosure - Note 15 - Derivatives and Hedging Activities (Tables)
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995745 - Disclosure - Note 16 - General and Administrative Expenses (Tables)
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995755 - Disclosure - Note 17 - Segments (Tables)
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995765 - Disclosure - Note 19 - Transition Period Comparative Data (Tables)
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995775 - Disclosure - Note 1 - Organization and Business (Details Textual)
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995785 - Disclosure - Note 3 - Liquidity (Details Textual)
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995795 - Disclosure - Note 4 - Summary of Significant Accounting Policies (Details Textual)
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995805 - Disclosure - Note 4 - Summary of Significant Accounting Policies - Summary of Fair Value of Financial Assets and Liabilities (Details)
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995815 - Disclosure - Note 5 - Prepaid Expenses and Other (Details Textual)
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995825 - Disclosure - Note 6 - Net Loss Per Share (Details Textual)
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995835 - Disclosure - Note 6 - Net Loss Per Share - Reconciliation of the Components of Basic and Diluted Net Loss Per Share (Details)
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995845 - Disclosure - Note 7 - Stockholders' Equity (Details Textual)
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995855 - Disclosure - Note 8 - Acquisitions (Details Textual)
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995865 - Disclosure - Note 9 - Property & Equipment - Fixed Assets (Details)
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995875 - Disclosure - Note 10 - Investment in Peak Gold JV (Details Textual)
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995885 - Disclosure - Note 10 - Investment in Peak Gold JV - Roll-forward of Investment in the Joint Venture Company (Details)
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995895 - Disclosure - Note 10 - Investment in Peak Gold JV - Condensed Balance Sheet for Peak Gold, LLC (Details)
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995905 - Disclosure - Note 10 - Investment in Peak Gold JV - Condensed Results of Operations for Peak Gold, LLC (Details)
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995915 - Disclosure - Note 11 - Stock Based Compensation (Details Textual)
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995925 - Disclosure - Note 11 - Stock Based Compensation - Schedule of Unvested Restricted Stock (Details)
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995935 - Disclosure - Note 12 - Commitments and Contingencies (Details Textual)
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995945 - Disclosure - Note 13 - Income Taxes (Details Textual)
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995955 - Disclosure - Note 13 - Income Taxes - Income Tax Provision Reconciliation (Details)
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995965 - Disclosure - Note 13 - Income Taxes - Schedule of Income Taxes Paid Net of Refunds (Details)
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995975 - Disclosure - Note 13 - Income Taxes - Schedule of Components of Loss Before Taxes (Details)
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995985 - Disclosure - Note 13 - Income Taxes - Components of Income Tax Provision Continuing Operation (Details)
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995995 - Disclosure - Note 13 - Income Taxes - Net Deferred Tax Liability (Details)
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996005 - Disclosure - Note 14 - Debt - Components of Debt (Details)
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996015 - Disclosure - Note 14 - Debt - Components of Debt (Details) 2
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996025 - Disclosure - Note 14 - Debt (Details Textual)
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996035 - Disclosure - Note 15 - Derivatives and Hedging Activities (Details Textual)
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996045 - Disclosure - Note 15 - Derivatives and Hedging Activities - Derivatives Not Designated as Hedging (Details)
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996055 - Disclosure - Note 15 - Derivatives and Hedging Activities - Fair Values of Derivative Instruments on the Balance Sheet (Details)
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996065 - Disclosure - Note 15 - Derivatives and Hedging Activities - Effect on Statement of Operations (Details)
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996075 - Disclosure - Note 16 - General and Administrative Expenses - Components of General and Administrative Expenses (Details)
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996085 - Disclosure - Note 17 - Segments (Details Textual)
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996095 - Disclosure - Note 17 - Segments - Schedule of Segment Information (Details)
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996105 - Disclosure - Note 18 - Related Party Transactions (Details Textual)
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996115 - Disclosure - Note 19 - Subsequent Events (Details Textual)
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The percentage of base salary of payout if all performance goals are met under the short term incentive plan.
ctgo_ShortTermIncentivePlanAllPerformanceGoalsPayoutPercentageOfBaseSalary
Short Term Incentive Plan, All Performance Goals, Payout, Percentage of Base Salary
Effective interest rate for the original issue discount or premium and issuance costs under the debt agreement.
ctgo_DebtInstrumentInterestRateEffectivePercentageAmortizationOfDiscountAndIssuanceCosts
Debt Instrument, Interest Rate, Effective Percentage, Amortization of Discount and Issuance Costs
Represents Alaska Gold Torrent, LLC.
Alaska Gold Torrent, LLC [Member]
Alaska Gold Torrent, LLC [Member]
Drawdown prepayments into income
Drawdown prepayments into income.
Drawdown prepayments into income
Equity compensation
Deferred Compensation Equity
Segments [Domain]
Foreign
Income (Loss) from Continuing Operations before Income Taxes, Foreign
Entity Incorporation, State or Country Code
us-gaap_PreferredStockSharesIssued
Preferred Stock, Shares Issued (in shares)
Statement of Financial Position Location, Balance [Domain]
Percentage of fee paid to agent in connection with private placement.
ctgo_PrivatePlacementFeePercentage
Private Placement Fee, Percentage
Common stock issuance for acquisitions, (in shares)
Adjustments to Additional Paid in Capital Common Stock Issuance for Acquisitions, Shares
Adjustments to additional paid in capital common stock issuance for acquisitions, shares.
Long-Term Debt, Excluding Current Maturities, Total
Debt, net
Debt non-current portion, net
Non-current debt, net, Beginning balance
Non-current debt, net, Ending balance
Debt non-current portion, net
Plan Name [Axis]
Grantee Status [Domain]
Entity Current Reporting Status
Cash proceeds from warrant exercise
Cash proceeds from warrant exercise
Proceeds from Warrant Exercises
The percentage of the payout to be paid in cash under the short term incentive agreement.
ctgo_ShortTermIncentivePlanPayoutPercentageCash
Short Term Incentive Plan, Payout, Percentage Cash
EXPENSES:
Fair Value, Inputs, Level 2 [Member]
us-gaap_DeferredTaxAssetsNet
Deferred Tax Assets, Net
Commitments and Contingencies
Commitments and Contingencies Disclosure [Text Block]
Common stock, shares authorized (in shares)
Common stock, shares authorized (in shares)
Common Stock, Shares Authorized (in shares)
Number of shares in escrow
Number of shares in escrow.
Number of shares in escrow
Asset Retirement Obligation [Policy Text Block]
Document Fiscal Period Focus
us-gaap_DebtInstrumentInterestRateStatedPercentage
Debt Instrument, Interest Rate, Stated Percentage
Entity Shell Company
Grantee Status [Axis]
Convertible Debt [Member]
Unsecured, Subordinated Convertible Debenture [Member]
Cash and Cash Equivalents, at Carrying Value, Total
Cash
Cash and cash equivalents
Shares withheld at closing
Business Combination, Consideration Transferred and Preacquisition Equity Interest in Acquiree
Business Combination, Consideration Transferred, Including Equity Interest in Acquiree Held before Combination, Total
Represents ownership percentage under investor right agreement.
ctgo_InvestorRightAgreementOwnershipPercentage
Investor Right Agreement, Ownership Percentage
Net Assets
Net Assets (Deficit)
Research and Development Arrangement, Contract to Perform for Others, Type [Axis]
Cybersecurity Risk Management, Strategy, and Governance [Abstract]
Common stock, shares issued (in shares)
Common Stock, Shares Issued (in shares)
Common stock, shares issued (in shares)
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]
Cybersecurity Risk Board of Directors Oversight [Text Block]
Statement [Table]
Internal Revenue Service (IRS) [Member]
Represents a person or group.
Person or Group [Member]
Payments to Acquire Businesses, Gross
Acquisition of Contango Lucky Shot Alaska, LLC
Cash consideration
Te total cash and noncash contributions to equity method investment.
ctgo_EquityMethodInvestmentTotalContributions
Equity Method Investment, Total Contributions
Asset Retirement Obligation, Ending Balance
Asset Retirement Obligation, Beginning Balance
Asset Retirement Obligation, Total
us-gaap_AssetRetirementObligation
Asset Retirement Obligation, Ending Balance
Statement [Line Items]
Business Combination [Domain]
Avidian Gold Corp.1 [Member]
Avidian Gold Corp.1.
Avidian Gold Corp. [Member]
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price
Expired unexercised, weighted average exercise price (in dollars per share)
Entity Filer Category
Commitment Fee Derecognized And Added To Debt Discount
Commitment fee derecognized and added to debt discount.
Commitment fee derecognized and added to debt discount
Balance of the Equity
Balance of the Equity
Balance of the Equity
us-gaap_LiabilitiesAndStockholdersEquity
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY
Vehicles [Member]
Less current portion
Debt, current portion
Long-Term Debt, Current Maturities
Long-Term Debt, Current Maturities, Total
Less current portion, Beginning balance
Less current portion, Ending balance
Located in Fairbanks Mining District [Member]
Located in fairbanks mining district.
Located in Fairbanks Mining District [Member]
Underwriting Offering [Member]
Underwriting offering.
Long-Lived Tangible Asset [Axis]
Severance Costs
Severance expenses
us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount
Summary of Fair Value of Financial Assets and Liabilities
Fair Value, by Balance Sheet Grouping [Table Text Block]
Represents the State of Alaska mining claims located north and northwest of the Tetlin Lease.
State of Alaska Mining Claims Located North and Northwest of Tetlin Lease [Member]
Outstanding equity interests acquired
Business Combination, Voting Equity Interest Acquired, Percentage
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag]
Shares repurchased for tax withholdings on share-based awards
Shares Repurchased During Period Value For Tax Withholdings On Share Based Awards
Shares repurchased during period value for tax withholdings on share based awards.
Shares repurchased for tax withholdings on share-based awards
Commodity Contract 2026 [Member]
Commodity contract 2026.
us-gaap_DeferredTaxAssetsValuationAllowance
Valuation allowance
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent
Income tax benefit at statutory tax rate, percent
Income tax benefit at US federal statutory tax rate, Percentage
us-gaap_SharesIssuedPricePerShare
Shares Issued, Price Per Share (in dollars per share)
Subsequent Event [Line Items]
Noncash or Part Noncash Acquisition, Payables Assumed
Consideration payable for Avidian acquisition
Cybersecurity Risk Management Third Party Engaged [Flag]
Documents Incorporated by Reference [Text Block]
Effective Income Tax Rate Reconciliation, Percent
Effective tax rates
Income tax expense, Percentage
us-gaap_InvestmentIncomeInterest
Interest income
us-gaap_TreasuryStockCommonValue
Treasury stock at cost (2,480 at December 31, 2025; and 2,480 shares at December 31, 2024)
Income Tax Jurisdiction [Axis]
us-gaap_AssetRetirementObligationAccretionExpense
Asset Retirement Obligation, Accretion Expense
Geographical [Domain]
LONG-TERM ASSETS:
LONG-TERM ASSETS:
Additional paid-in capital
Additional paid-in capital
Debt Issuance Costs, Net, Total
us-gaap_DeferredFinanceCostsNet
Debt Issuance Costs, Net
Unamortized debt issuance costs
Unamortized debt issuance costs, Beginning balance
Unamortized debt issuance costs, Ending balance
us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
Treasury shares withheld for employee taxes
Deferred Tax Liabilities, Investments
Investment In Peak Gold JV
Investment In Peak Gold JV
Gross amount offset, asset
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset
Significant Accounting Policies [Text Block]
Summary of Significant Accounting Policies
Property, Plant and Equipment [Line Items]
Measurement Input, Risk Free Interest Rate [Member]
ATM Offering [Member]
ATM offering.
Debt Instrument, Maturity Date, Description
Maturity date, description
Vesting [Domain]
Granted (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)
Cybersecurity Risk Management, Strategy, and Governance [Table]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Investment, Name [Axis]
Earnings Per Share, Basic, Total
Basic and diluted (in dollars per share)
Loss Per Share, basic (in dollars per share)
Net loss per share, basic
Repayments of Long-Term Debt, Total
Repayments of Long-Term Debt
Principal payments
Principal repayments on debt
Principal repayments on debt
Repayments of debt
Right of Use Asset [Member]
Right-of-use asset.
Right of Use Asset [Member]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Outstanding (in shares)
Outstanding (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number (in shares)
Interest expense paid with stock
Interest expense paid with stock
Stock Issued
Shares issued for acquisitions
Director fees
Director Fee
Debt, Policy [Policy Text Block]
Repayments of Secured Debt
Repayment obligations on the facility
us-gaap_LiabilitiesCurrent
Total current liabilities
Current liabilities
Represents the extension of the term of leases and concessions on undeveloped acreage.
ctgo_ExtensionOfTermOfLeasesAndConcessionsOnUndevelopedAcreage
Extension of Term of Leases and Concessions on Undeveloped Acreage (Year)
Represents Petrie Partners Securities, LLC.
Petrie Partners Securities, LLC [Member]
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Adjustments to reconcile net loss to net cash provided by operating activities:
Hedging Designation [Domain]
Weighted average price (in USD per Ounce)
us-gaap_UnderlyingDerivativeMass
Underlying, Derivative Mass (in USD per Ounce)
Income Tax Paid, Federal, after Refund Received
Income Tax Paid, Federal, after Refund Received, Total
US - Federal
Domestic Tax Jurisdiction [Member]
Represents information related to two employees.
Two Employees [Member]
us-gaap_InterestExpenseDebtExcludingAmortization
Interest Expense, Debt, Excluding Amortization
Acquisition of property and equipment
Payments for (Proceeds from) Productive Assets
Payments for (Proceeds from) Productive Assets, Total
Consolidation Items [Domain]
STOCKHOLDERS’ EQUITY (DEFICIT):
STOCKHOLDERS' EQUITY:
Entity Small Business
Derivative Contract Asset, Current [Member]
Derivative contract asset, current.
Hedging Designation [Axis]
Commodity Contract [Member]
Accumulated deficit
Retained Earnings (Accumulated Deficit), Total
Accumulated deficit
Underwritten Public Offering [Member]
Represents underwritten public offering.
Underwritten Public Offering [Member]
Represents December 2022 warrants
December 2022 Warrants [Member]
Represents the amount of advance royalties to be paid per year.
ctgo_AdvanceRoyaltiesToBePaidPerYear
Advance Royalties to Be Paid Per Year
Royalties recognized into income
Royalties recognized into income.
Accretion expense
Accretion expense
Accretion expense
Unrealized Gain (Loss) on Derivatives and Commodity Contracts
Unrealized Gain (Loss) on Derivatives and Commodity Contracts, Total
Amount of unrealized gain (loss) recognized in income
Amount of unrealized gain (loss) recognized in other income (expense)
Effective Income Tax Rate Reconciliation, Cross-Border Tax Effect, Amount
Effective Income Tax Rate Reconciliation, Cross-Border Tax Effect, Amount, Total
Effect of cross-border tax laws
Entity Well-known Seasoned Issuer
Description Of Upcoming Status Of Mining Project
Description of upcoming status of mining project.
The maximum period for payment to be made in the event of change of control under the short term incentive plan.
ctgo_ShortTermIncentivePlanChangeOfControlMaximumPeriodOfPayment
Short Term Incentive Plan, Change of Control, Maximum Period of Payment (Day)
us-gaap_WarrantsAndRightsOutstandingMeasurementInput
Warrants and Rights Outstanding, Measurement Input
Contango Shareholders [Member]
Contango shareholders.
Stock Based Compensation
Share-Based Payment Arrangement [Text Block]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Travel
Travel and Entertainment Expense
Lease Contractual Term [Axis]
Project [Domain]
Amount of mineral resource used to determine the contingent consideration in an asset acquisition.
ctgo_AssetAcquisitionContingentConsiderationArrangementsProductionThresholdMineralResource
Asset Acquisition, Contingent Consideration Arrangements, Production Threshold, Mineral Resource (Ounce)
Amendment Flag
Represents the amount of annual claim rentals payable, as of the balance sheet date.
ctgo_AnnualClaimRentals
Annual Claim Rentals
Represents January 2023 warrants
January 2023 Warrants [Member]
us-gaap_TreasuryStockSharesRetired
Treasury shares issued in common stock issuance (in shares)
Avidian Alaska [Member]
Avidian Alaska.
Income tax benefit at statutory tax rate
Income tax benefit at US federal statutory tax rate
us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Number of shares that can be purchased by pre-funded warrants
Chief Executive Officer [Member]
Entity Address, Postal Zip Code
us-gaap_NetCashProvidedByUsedInOperatingActivities
Net cash provided by (used in) operating activities
Cash from operating activities
Segment reporting, CODM, profit (loss) measure, description
Common Stock [Member]
Common Stock [Member]
Represents the contractual exploration costs to be paid per year, pursuant to the terms of the agreement.
ctgo_ContractualAnnualExplorationCosts
Contractual Annual Exploration Costs
Cybersecurity Risk Role of Management [Text Block]
The percentage of base salary to be paid if maximum performance targets are met under the short term incentive plan.
ctgo_ShortTermIncentivePlanMaximumPerformanceTargetPayoutPercentageOfBaseSalary
Short Term Incentive Plan, Maximum Performance Target, Payout, Percentage of Base Salary
Amount of annual base salary.
ctgo_AnnualBaseSalary
Annual Base Salary
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Ending Balance
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Beginning Balance
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Total
us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Less: Accumulated depreciation and amortization
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]
Dolly Varden Acquisition [Member]
Dolly Varden Acquisition.
us-gaap_PaymentsToAcquireInterestInJointVenture
Payments to Acquire Interest in Joint Venture
Income Tax Paid, by Individual Jurisdiction [Line Items]
Research and Development Arrangement, Contract to Perform for Others, Type [Domain]
Represents the reduction in the percentage of the royalty payable.
ctgo_DecreaseInRoyaltyRates
Decrease in Royalty Rates
us-gaap_DebtInstrumentInterestRateEffectivePercentage
Debt Instrument, Interest Rate, Effective Percentage
Entity Address, Address Line One
Deferred Tax Liabilities, Gross
Total Deferred Tax Liabilities
Total Deferred Tax Liabilities
Represents the percentage fee related to debt instrument.
ctgo_DebtInstrumentFeePercentage
Debt Instrument, Fee Percentage
Fair Value Hierarchy and NAV [Axis]
Lucky Shot [Member]
Lucky shot.
us-gaap_DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger
Net Loss Per Share [Abstract]
NET LOSS PER SHARE
LOSS PER SHARE
Income Tax, Policy [Policy Text Block]
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag]
Supplemental disclosure of cash flow information
Name of Property [Axis]
Due on or Before the 6-month Anniversary [Member]
Tranche Three [Member]
Tranche three.
Statement of Financial Position Location, Balance [Axis]
Deferred Tax Assets, Gross
Total Deferred Tax Assets
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]
Repurchase Agreements and Similar Transactions, Maturity Periods [Axis]
Increase (Decrease) in Income Taxes
Decrease/(increase) in income taxes receivable
Commitments And Contingencies Disclosure [Table]
Commitments and contingencies disclosure.
Deferred Tax Assets, Capitalized Exploration
Investment in the Peak Gold JV
Capitalized Exploration
Chief Financial Officer [Member]
Represents the payments that have been made, inception-to-date, to reduce the royalty rate under an agreement.
ctgo_InceptionToDatePaymentsToReduceRoyaltyRate
Inception-to-date Payments to Reduce Royalty Rate
Class of Warrant or Right [Axis]
Document Type
Income Taxes Paid, Net
Total income tax refunds
Total income tax paid, net of received
Gross Profit
Gross profit
Gross profit
Collaborative Arrangement and Arrangement Other than Collaborative [Axis]
Collaborative Arrangement and Arrangement Other than Collaborative [Domain]
Entity Central Index Key
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]
Lease Agreement Payment Obligation Amount
Lease agreement payment obligation amount.
Lease agreement payment obligation amount
Royalties Recognized In Interest And Other Income
Royalties recognized in interest and other income.
Royalties recognized in interest and other income
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
Cash
NET CHANGE IN CASH AND CASH EQUIVALENTS AND RESTRICTED CASH
Business Acquisition Estimated Fair Value Of Shares To Be Issued
Business Acquisition Estimated Fair Value Of Shares To Be Issued
Estimated fair value of shares to be issued
Subsequent Event Type [Domain]
us-gaap_FairValueAdjustmentOfWarrants
Fair Value Adjustment of Warrants
Maximum amount of common shares may be offered under offering agreement.
ctgo_OfferingAgreementMaximumAggregateCommonSharesMayBeOffered
Offering Agreement, Maximum Aggregate Common Shares May be Offered
Capital Calls [Member]
Capital calls.
Capital Calls [Member]
Percentage of maximum combined assets of operating segments.
Percentage of combined assets of operating segments
Fair value of current maturities of hedges
FairValueOfCurrentMaturitiesOfHedges.
Business Combination, Consideration Transferred, Equity Interest, Type [Domain]
Common stock, par value (in dollars per share)
Common stock, par value (in dollars per share)
Common Stock, Par or Stated Value Per Share (in dollars per share)
Common stock, par value per share
Base Rate [Member]
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term (Year)
Asset Acquisition, Contingent Consideration, Liability
Asset Acquisition, Contingent Consideration, Liability, Total
Contingent payable
Equity Method Investment, Inception-to-date Cumulative loss
Represents the cumulative income (loss), from inception to the balance sheet date, of an equity method investment.
ctgo_EquityMethodInvestmentSummarizedFinancialInformationInceptionToDateCumulativeIncomeLoss
Equity Method Investment, Summarized Financial Information, Inception-to-date Cumulative Income (Loss)
Realized gain
Realized Investment Gains (Losses)
Realized Investment Gains (Losses), Total
Liquidity
The entire disclosure for liquidity.
Liquidity [Text Block]
Document Financial Statement Error Correction [Flag]
Represents the lease related to state of Alaska mining claims for exploration and development.
State of Alaska Mining Claims for Exploration and Development [Member]
Debt Disclosure [Abstract]
Percentage Of Ownership
Percentage of ownership.
Ownership percentage
Schedule Of Income Tax Paid Net Of Refunds [Table Text Block]
Schedule of income tax paid net of refunds.
Schedule of Income Taxes Paid Net of Refunds [Table Text Block]
Consulting Fees
Consulting fees.
Consulting fees
Accrued liabilities
Accrued Liabilities, Current, Total
Accrued liabilities
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Ownership [Domain]
Current Fiscal Year End Date
Represents information pertaining to additional properties (other than the Tetlin Lease and other certain properties).
Additional Properties [Member]
Entity Address, State or Province
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number (in shares)
Balance
Balance
Restricted shares unvested
Stock issued for convertible note interest payment
Shares issued for convertible debt interest payment
Investment, Name [Domain]
Johnson Tract [Member]
Johnson Tract Property [Member]
Johnson tract property.
Johnson Tract Project [Member]
Asset Acquisition [Domain]
Lease Agreement Period
Lease agreement period.
Lease agreement period
Class of Warrant or Right [Domain]
Geographical [Axis]
Treasury shares withheld for employee taxes (in shares)
Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation
Represents entity's share of losses from equity method investment including losses that are not recognized in earnings
ctgo_LossFromEquityMethodInvestmentsUnrecorded
Loss from Equity Method Investments, Unrecorded
State tax benefit
State income taxes expense, net of federal income tax effect
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Amount
Other
Professional fees
Professional Fees
Hedge [Member]
Hedge.
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Interest and other income
Interest and Other Income
Lease Agreement Payment Obligation Increase Amount
Lease agreement payment obligation increase amount.
Lease agreement payment obligation increase amount
Commodity Contract 2025 [Member]
Commodity Contract 2025 [Member]
Commodity contract 2025.
Proceeds from the sale of marketable securities
Proceeds from Sale and Maturity of Marketable Securities
Subsequent Event [Member]
Equity Method Investment, Nonconsolidated Investee [Domain]
Property, Plant and Equipment [Abstract]
Grant date fair value of award under share-based payment arrangement. Excludes share and unit options.
ctgo_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantDateFairValue
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grant Date Fair Value
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares)
us-gaap_OtherAssetsNoncurrent
Total long-term assets
Measurement Input, Expected Term [Member]
Represents term loan facility.
Term Loan Facility [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Expirations in Period
Expired (in shares)
Expired unexercised (in shares)
Dolly Varden Shareholders [Member]
Dolly Varden shareholders.
Income Tax Paid, Foreign, after Refund Received
Income Tax Paid, Foreign, after Refund Received, Total
Foreign - Canada
Interest Expense, Debt, Total
us-gaap_InterestExpenseDebt
Interest Expense, Debt
Effective Income Tax Rate Reconciliation Convertible Debt Interest Percentage
Effective income tax rate reconciliation convertible debt interest percentage.
Convertible Debt Interest, Percentage
us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments
Debt Instrument, Convertible, Number of Equity Instruments
Debt Instrument, Unamortized Discount, Total
us-gaap_DebtInstrumentUnamortizedDiscount
Unamortized debt discount, Beginning balance
Unamortized debt discount, Ending balance
Unamortized debt discount
State and Local Jurisdiction [Member]
Treasury Stock, Shares Treasury Stock, Shares (in shares)
Treasury stock, sharesTreasury stock, shares (in shares)
Treasury shares issued in common stock issuance (in shares)
Stock Issued During Period, Shares, Treasury Stock Reissued
Represents the State of Alaska mining claims located north and east of the Lucky Shot Property.
State of Alaska Mining Claims Located North and East of Lucky Shot Property [Member]
The amount of salary and compensation retention agreement that is contingently payable.
ctgo_ContingentSalaryAndCompensationRetentionAgreement
Contingent Salary and Compensation, Retention Agreement
Gold to Silver Ratio
ctgo_GoldToSilverRatio
Represents the gold to silver ratio.
Preferred Stock, 15,000,000 shares authorized
Preferred Stock, 15,000,000 shares authorized
Value of share
Business Combination, Consideration Transferred, Equity Interest, Share Issued, Value
us-gaap_AssetAcquisitionConsiderationTransferredContingentConsideration
Asset Acquisition, Consideration Transferred, Contingent Consideration
The 2023 Plan [Member]
The 2023 Plan.
Asset Acquisition, Liability recognized for deferred consideration
Asset acquisition, liability recognized for deferred consideration.
Asset acquisition, liability recognized for deferred consideration
Minimum [Member]
Gross Asset
Derivative Asset, Subject to Master Netting Arrangement, before Offset
CURRENT ASSETS:
CURRENT ASSETS:
Prepaid Expenses and Other
The complete disclosure for prepaid expenses.
Prepaid Expenses [Text Block]
Represents interest paid in cash, percentage.
ctgo_DebtInstrumentInterestPaidInCashPercentage
Debt Instrument, Interest Paid in Cash, Percentage
The Joint Venture Company [Member]
Represents information pertaining to Peak Gold, LLC, a limited liability company.
The Joint Venture Company [Member]
Fair Value, Inputs, Level 3 [Member]
Represents vesting between April 2022 and January 2024.
Vesting Between April 2022 and January 2024 [Member]
Segment Reporting [Abstract]
Derivative Contract Asset, Noncurrent [Member]
Derivative contract asset, noncurrent.
Business Combination [Policy Text Block]
CURRENT LIABILITIES:
CURRENT LIABILITIES:
Risk Management Objective of Using Derivatives [Policy Text Block]
Risk management objective of using derivatives.
Risk Management Objective of Using Derivatives
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to legal fees.
Legal fees
Number of options and warrants outstanding.
ctgo_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsAndWarrantsOutstandingNumber
Share-Based Compensation Arrangement by Share-Based Payment Award, Options and Warrants, Outstanding, Number (in shares)
Exploration [Member]
Exploration Segment [Member]
Exploration segment.
Related Party Transactions [Abstract]
Business Combination, Consideration Transferred, Equity Interest, Type [Axis]
us-gaap_SharesOutstanding
Balance (in shares)
Balance (in shares)
us-gaap_OperatingLossCarryforwards
Operating Loss Carryforwards
Onyx Gold Corp [Member]
Onyx Gold Corp.
Onyx [Member]
Income Tax Paid, by Individual Jurisdiction [Abstract]
Jurisdiction
Lucky Shot Property [Member]
Lucky Shot Property member.
COMMITMENTS AND CONTINGENCIES (NOTE 12)
COMMITMENTS AND CONTINGENCIES (NOTES 8 and 12)
Auditor Firm ID
Debt Instrument, Basis Spread on Variable Rate
Debt Instrument, Basis Spread on Variable Rate
Forecast [Member]
Scenario Forecast [Member]
Represents certain passive investors.
Certain Passive Investors [Member]
Restricted Cash, Current
Restricted cash
Restricted cash
Represents information pertaining to Peak Gold, LLC.
Peak Gold, LLC [Member]
Peak Gold, LLC [Member]
Peak Gold JV [Member]
Related to new warrants.
New Warrants [Member]
Marketable Securities, Noncurrent
Marketable securities
Marketable securities - noncurrent
Change in Estimate of Contingent Consideration Liability
Change in estimate in contingent consideration liability.
Change in estimate in contingent consideration liability
Non-cash portion for lease expense
Noncash Portion For Lease Expense
Non-cash portion for lease expense.
Incurred Interest And Finance Expense
Incurred interest and finance expense.
Incurred PLA fee
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent
Change in valuation allowance, Percentage
NON-CURRENT LIABILITIES:
NON-CURRENT LIABILITIES:
Royalty reimbursement advance
Royalty reimbursement advance noncurrent
Royalty reimbursement advance noncurrent.
Interest Income (Expense), Net, Total
us-gaap_InterestIncomeExpenseNet
Interest expense
Interest and finance expense
Investment in Peak Gold JV
Investment in Peak Gold, LLC
Cash invested in Peak Gold, LLC
Investment in Peak Gold, LLC
us-gaap_ProfitLoss
NET LOSS
Net Income/(Loss)
Net Income
Represents modified warrants.
Modified Warrants [Member]
Lease Contractual Term [Domain]
Carry Trade [Member]
Carry Trade [Member]
Carry trade.
Stock based compensation
Percentage of Production Royalty Rate Increase
Percentage of production royalty rate increase.
Long-Term Debt, Type [Domain]
Cybersecurity Risk Management Positions or Committees Responsible [Text Block]
Weighted average number of shares outstanding, basic
Weighted Average Number of Shares Outstanding, Basic, Total
Weighted average shares for basic EPS (in shares)
Weighted Average Shares, basic (in shares)
Adjustments to Additional Paid in Capital Common Stock Issuance for Acquisitions
Adjustments to additional paid in capital common stock issuance for acquisitions.
Common stock issuance for acquisitions
Scenario [Axis]
Transition Period Comparative Data
Transition Period Comparative Datas [TextBlock]
Transition period comparative datas.
Document Information [Line Items]
Contango Mining Canada Inc. [Member]
Contango Mining Canada Inc.
Segment reporting, expense information used by CODM, description
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]
Segments [Axis]
Long-Lived Tangible Asset [Domain]
Total exploration expense
Total Exploration Expense
Total exploration expense.
Marketing and investor relations
Marketing Expense
Transition Period Comparative Data [Abstract]
Transition period comparative data.
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]
Subsequent Events
Subsequent Events [Text Block]
Represents chief financial officer and one other employee.
Chief Financial Officer and One Other Employee [Member]
Asset acquisition, consideration in direct transactions costs
Asset Acquisition, Consideration Transferred, Transaction Cost
Long-Term Debt
Total debt, net, Beginning balance
Total debt, net, Ending balance
Total Debt, net
Debt,
Debt, net
Related Party Transactions
Related Party Transactions Disclosure [Text Block]
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition, Total
Stock-based compensation
The number of warrants or rights exercised during period.
ctgo_ClassOfWarrantOrRightExercisedDuringPeriod
Class of Warrant or Right, Exercised During Period (in shares)
Variable Rate [Domain]
Derivative Contract Liability, Noncurrent [Member]
Derivative contract liability, noncurrent.
Other valuation allowance
Change in valuation allowance/Other valuation allowance
Represents the entity’s shares of expenditures, amount.
ctgo_EquityMethodInvestmentEntitySharesOfExpendituresAmount
Equity Method Investment, Entity Shares of Expenditures, Amount
us-gaap_StockholdersEquity
Balance
Balance
TOTAL STOCKHOLDERS' EQUITY
Derivatives Not Designated as Hedging Instruments [Table Text Block]
Derivatives Not Designated as Hedging Instruments [Table Text Block]
Asset acquisition, fair value amount
Asset acquisition, fair value amount.
Asset acquisition, fair value
Statement of Stockholders' Equity [Abstract]
Net recognized asset
Derivative Asset, Subject to Master Netting Arrangement, after Offset
Net recognized asset
Issuance paid
Issuance paid
Issuance paid
Gain/(loss) on marketable securities
Marketable Security, Gain (Loss)
Marketable Security, Gain (Loss), Total
Gain on marketable securities
Investment in Peak Gold, LLC (NOTE 10)
Investment balance
Investment balance
Equity Method Investments
Investment in Peak Gold, LLC
Use of Estimates, Policy [Policy Text Block]
Equity Method Investment [Table]
Avidian Gold Corp.
Avidian Gold Corp. [Member]
Avidian Gold Corp. [Member]
Treasury Stock [Member]
Treasury Stock, Common [Member]
Cash distributions received
Cash distributions received.
Avidian Gold Alaska Inc. [Member]
Avidian Gold Alaska Inc. [Member]
Avidian Gold Alaska Inc.
Entity Address, Address Line Two
Cash Distributions From Joint Venture Company [Policy Text Block]
Cash distributions from joint venture company.
Cash distributions from the Joint Venture Company
Represents information pertaining to the Alaska Hard Rock lease.
Alaska Hard Rock Lease [Member]
Income Tax Disclosure [Table]
Income tax disclosure.
us-gaap_DepreciationNonproduction
Depreciation expense
Represents maximum amount of commission fee as percentage of gross proceeds of shares sold.
ctgo_CommissionFeePercentageOfGrossProceedsOfSharesSoldMaximum
Commission Fee, Percentage of Gross Proceeds of Shares Sold, Maximum
CORE Alaska, LLC [Member]
CORE Alaska, LLC.
CORE Alaska, LLC [Member]
Project [Axis]
Represents president and chief executive officer.
President and CEO [Member]
President and Chief Executive Officer [Member]
Percentage of discount under the Underwriting Agreement.
ctgo_UnderwritingAgreementDiscountPercentage
Underwriting Agreement, Discount Percentage
Debt Instrument, Name [Domain]
Non-cash investing and financing activities:
Represents SOFR Adjustment.
SOFR Adjustment [Member]
Loss from equity investment in Peak Gold JV
Income/(loss) from equity investment in Peak Gold, LLC
Equity earnings from investment in Peak Gold, LLC
Equity (earnings) loss from investment in Peak Gold, LLC
Income (loss) from equity investment in Peak Gold, LLC
Income from equity investment in Peak Gold, LLC
Business Combination, Effective Date of Acquisition
Acquisition date
Derivative Contract Liability, Current [Member]
Derivative contract liability, current.
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Deferred principal repayments
Debt Instrument, Periodic Payment
Debt Instrument, Periodic Payment, Total
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]
Represents interest paid in shares, percentage.
ctgo_DebtInstrumentInterestPaidInSharesPercentage
Debt Instrument, Interest Paid in Shares, Percentage
Plan Name [Domain]
Represents the second production threshold.
Production Threshold, Two [Member]
Commodity Contract 2024 [Member]
Commodity Contract 2024 [Member]
Commodity contract 2024.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Entity [Domain]
Represents stock issued during period, shares, debt establishment fee.
ctgo_StockIssuedDuringPeriodSharesDebtEstablishmentFee
Stock Issued During Period, Shares, Debt Establishment Fee (in shares)
Credit Facility [Axis]
us-gaap_EquityMethodInvestmentOwnershipPercentage
Equity Method Investment, Ownership Percentage
Shareholders ownership percentage
Summary of Significant Accounting Policies [Line Items]
Summary of significant accounting policies.
Gain From Equity Method Investments Unrecorded
Gain from equity method investments unrecorded.
Income from Equity Method Investments, Unrecorded
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Text Block]
State
Cybersecurity Risk Management Expertise of Management Responsible [Text Block]
us-gaap_ClassOfWarrantOrRightOutstanding
Class of Warrant or Right, Outstanding (in shares)
Related and Nonrelated Parties [Axis]
Marketable Security, Realized Gain (Loss)
Realized gain from marketable securities
Other
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount
Foreign Tax Jurisdiction [Member]
Property, Plant and Equipment, Policy [Policy Text Block]
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to permanent differences.
Permanent differences
Entity Address, City or Town
Maturity Range Between March and September 2026 [Member]
Maturity range between march and september 2026.
Range Between March and September 2026 [Member]
Represents information pertaining to Royal Gold, Inc.
Royal Gold [Member]
Royal Gold [Member]
Schedule Of Liquidity [Line Items]
Schedule of liquidity.
Number of Reportable Segments
Number of reportable segments
Security Exchange Name
Royalty reimbursement advance
Royalty reimbursement advance current
Royalty reimbursement advance current.
Credit Facility [Domain]
Business Combination, Date of Acquisition Agreement
Agreement date
Long-Term Debt, Gross
Outstanding Principal Balance
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent
Other, Percentage
Property, Plant and Equipment, Gross, Ending Balance
Property, Plant and Equipment, Gross, Beginning Balance
Property, Plant and Equipment, Gross, Total
Property, plant and equipment, gross
162(m) Limitation
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to 162(m) limitation.
Counterparty Name [Axis]
us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Loss before income taxes
Gain/(loss) on spot metal sales
Gain on metal sales
Gain/(loss) on Spot sales
Cash distributions received
Cash distribution relating to production
Cash distribution relating to production
Impairment from loss, net of recovery
Represents impairment from casualty loss.
ctgo_ImpairmentFromCasualtyLoss
Represents information that would apply under the first scenario mentioned.
Scenario 1 [Member]
Measurement Input Type [Domain]
Share-Based Payment Arrangement, Employee [Member]
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent
Statutory tax rate difference, Percentage
Stockholders' Equity Note [Abstract]
Repurchase Agreement, Date
Stock purchase agreement date
Interest expense
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table]
Statistical Measurement [Domain]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net
Amount of unrealized and realized gain (loss) recognized in other income (expense)
The percentage of base salary to be paid in the event of change of control under the short term incentive plan.
ctgo_ShortTermIncentivePlanChangeOfControlPercentageOfBaseSalary
Short Term Incentive Plan, Change of Control, Percentage of Base Salary
Notes to Financial Statements
Notes To Financial Statements Abstract
Notes To Financial Statements [Abstract]
us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)
us-gaap_AssetsCurrent
Total current assets
Current assets
us-gaap_AllocatedShareBasedCompensationExpense
Share-Based Payment Arrangement, Expense
Share-Based Payment Arrangement, Expense
The equity interest of other holders in equity method investment.
ctgo_EquityMethodInvestmentOwnershipPercentageByOtherOwner
Equity Method Investment, Ownership Percentage by Other Owner
Document Period End Date
Per share or per unit offering amount of equity securities issued.
ctgo_SharesIssuedOfferingPrice
Shares Issued, Offering Price (in dollars per share)
Silver Royalty [Member]
Silver Royalty [Member]
Silver royalty.
State of Alaska mining claims, leasehold locations and upland mining lease located in Fairbanks Mining District [Member]
State of Alaska mining claims, leasehold locations and upland mining lease located in Fairbanks Mining District [Member]
State of Alaska Mining Claims, Leasehold Locations And Upland Mining Lease Located In Fairbanks Mining District [Member]
Title and Position [Axis]
Fair Value Hierarchy and NAV [Domain]
ICFR Auditor Attestation Flag
Gain Losses On Metal Sales
Gain (losses) on metal sales.
Gain (losses) on metal sales
Exploration expense
us-gaap_ExplorationExpense
Exploration expense
Statement of Financial Position [Abstract]
Transaction costs accrued and capitalized
Transaction Costs Accrued And Capitalized
Transaction costs accrued and capitalized.
Prepayment received pursuant to purchase agreement
Prepayment received pursuant to purchase agreement.
Prepayment received pursuant to purchase agreement
Lease Agreement Payment Obligation Term
Lease agreement payment obligation term.
Lease agreement payment obligation term
Amount due on purchase
Amount Due on Purchase
Amount due on purchase
Vesting [Axis]
Deferred Tax Liabilities, Net
Net Deferred Tax Liability
Net Deferred Tax Liability
Prepaid Expenses and Other [Abstract]
Prepaid expenses and other.
us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount
Debt Instrument, Unused Borrowing Capacity, Amount
us-gaap_CurrentIncomeTaxExpenseBenefit
Total current income tax (benefit) / expense
Kitsault Valley Project [Member]
Kitsault Valley Project [Member]
Kitsault Valley Project.
The amount of gold are produced or received by the acquiror pursuant to the contingent consideration arrangements.
ctgo_AssetAcquisitionContingentConsiderationArrangementsProductionThresholdOutputGold
Asset Acquisition, Contingent Consideration Arrangements, Production Threshold, Output, Gold (Ounce)
Cybersecurity Risk Management, Strategy, and Governance [Line Items]
Net recognized liability
Derivative Liability, Subject to Master Netting Arrangement, after Offset
Net recognized liability
The number of preferred stock that issuable per right.
ctgo_RightsAgreementNumberOfPreferredStockIssuablePerRight
Rights Agreement, Number of Preferred Stock Issuable Per Right (in shares)
Not Designated as Hedging Instrument [Member]
Not Designated as Hedging Instrument [Member]
Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table]
us-gaap_Liabilities
TOTAL LIABILITIES
Total Liabilities
Total Liabilities
Deferred Tax Assets, Investments
Investment In Peak Gold JV
Contingent payment
contingent Payment
Contingent payment.
Derivative Nonmonetary Notional Amount Mass Remaining Balance
Derivative nonmonetary notional amount mass remaining balance.
Derivative, Nonmonetary Notional Amount Remaining Balance, Mass (Ounce)
Payment for settle carry trade
Payment For Settle Carry Trade
Payment for settle carry trade.
Asset Retirement Obligations, Noncurrent, Total
us-gaap_AssetRetirementObligationsNoncurrent
Asset retirement obligations
Regulatory fees
Regulatory Fees
Regulatory fees.
Equity Method Investments [Policy Text Block]
Commitment fee
Commitment Fee
Commitment fee.
Represents information that would apply under the third scenario mentioned.
Scenario 3 [Member]
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount
Statutory tax rate difference
Derivative Instruments, Gain (Loss) [Line Items]
Represents the Credit Agreement.
Credit Agreement [Member]
Restricted Stock [Member]
Variable Rate [Axis]
Stock Issued During Period Shares Treasury Stock Issued for Convertible Note Interest Payment
Stock issued during period shares treasury stock issued for convertible note interest payment.
Treasury shares issued for convertible note interest payment
JT Mining, Inc. [Member]
JT Mining, Inc.
JT Mining, Inc. [Member]
Value of stock issued as a result of the exercise of warrants.
Warrants
Weighted average number of shares outstanding, diluted
us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Weighted average shares for diluted EPS (in shares)
Weighted Average Shares, diluted (in shares)
Entity File Number
Derivative Instruments, Gain (Loss) [Table Text Block]
Derivative Instruments, Gain (Loss) [Table Text Block]
Basis of Presentation
Basis of Accounting [Text Block]
The threshold percentage of beneficial ownership pursuant to the rights agreement.
ctgo_RightsAgreementBeneficialOwnershipPercentageOfCommonStockthreshold
Rights Agreement, Beneficial Ownership Percentage of Common Stock,Threshold
Cover [Abstract]
Effect of rates different than statutory
Effective Income Tax Rate Reconciliation, Effect of Rates Different Than Statutory
Effective income tax rate reconciliation, effect of rates different than statutory.
Represents information pertaining to executives and non-executive directors.
Executives and Non-executive Directors [Member]
Purchase amount
Purchase Amount
Purchase amount.
Measurement Input Type [Axis]
Increase (Decrease) in Accounts Payable and Accrued Liabilities, Total
Increase in accounts payable and other accrued liabilities
Increase (decrease) in accounts payable and other accrued liabilities
Increase/(decrease) in accounts payable and accrued liabilities
Distributions from exploration
Distributions from Exploration
Distributions from exploration.
Amount of gain (loss) recognized in income
Derivative, Gain (Loss) on Derivative, Net
Derivative, Gain (Loss) on Derivative, Net, Total
Amount of realized gain (loss) recognized in other income (expense)
Warrant exercise price
Warrant Exercise Price
Warrant Exercise Price
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest
Total Worldwide Pre-tax Book Loss
Represents the initial term of leases and concessions on undeveloped acreage.
ctgo_InitialTermOfLeasesAndConcessionsOnUndevelopedAcreage
Initial Term of Leases and Concessions on Undeveloped Acreage (Year)
Scenario [Domain]
Represents the State of Alaska mining claims located near Triple Z Property.
State of Alaska Mining Claims Located Near Triple Z Property [Member]
General and Administrative Expenses
General and Administrative Expenses [Text Block]
The entire disclosure for components of general and administrative expenses.
Derivatives, Methods of Accounting, Derivatives Not Designated or Qualifying as Hedges [Policy Text Block]
Non-designated Hedges
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Number of Operating Segments
Number of operating segments
Sale of Stock [Domain]
Contractual Annual Exploration Costs Payment Deferral Period
Contractual annual exploration costs payment deferral period.
Contractual annual exploration costs payment deferral period
Segment Reporting Disclosure [Text Block]
Segments
General and administrative expense
Total
us-gaap_GeneralAndAdministrativeExpense
General and administrative
Stock Issued During Period Value Warrant Modification
Stock issued during period value warrant modification.
Warrant modification
Corporate and Other Reconciling Items [Member]
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Nonvested Restricted Stock Shares Activity [Table Text Block]
Schedule of Unvested Restricted Stock
Stock issued during period shares treasury stock issued for convertible note interest payment shares
Stock issued during period shares treasury stock issued for convertible note interest payment shares.
Treasury shares issued for convertible note interest payment (in shares)
Contingent consideration liability - noncurrent
Contingent consideration liability
Contingent consideration liability
Stock Issued During Period, Shares, Acquisitions
Issuance of common stock from acquisitions (in shares)
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested, Number of Shares (in shares)
Proceeds from Issuance of Common Stock and warrant Net
Proceeds from issuance of common stock and warrant net.
Cash proceeds from common stock and warrant issuance, net
State of Alaska located near tidewater [Member]
State of alaska located near tidewater.
State of Alaska Located Near Tidewater [Member]
Subsequent Event [Table]
Derivative Assets (Liabilities), at Fair Value, Net
Derivative Assets (Liabilities), at Fair Value, Net
Derivative Assets (Liabilities), at Fair Value, Net, Total
Other Assets
Deferred Tax Assets, Other
Earnings Per Share, Diluted, by Common Class, Including Two-Class Method [Table]
us-gaap_DebtInstrumentConvertibleConversionPrice1
Debt Instrument, Convertible, Conversion Price (in dollars per share)
Fair value of warrants issued with common stock
Lease agreement obligation final payment amount
Lease Agreement Obligation Final Payment Amount
Lease agreement obligation final payment amount.
Gold Discount Percentage
Gold discount percentage.
Gold discount percentage
Document Financial Statement Restatement Recovery Analysis [Flag]
Gross amount offset, liability
Derivative Liability, Subject to Master Netting Arrangement, Asset Offset
Tabular disclosure of the roll-forward of an equity method investment.
Roll-forward of Equity Method Investment [Table Text Block]
Estimated useful life (Year)
New Accounting Pronouncements, Policy [Policy Text Block]
Derivative Instruments, Gain (Loss) [Table]
Gain (Loss) on Disposition of Assets
Gain (Loss) on Disposition of Assets, Total
Sale of gold
Stock issued for convertible note interest payment (in shares)
Shares issued for convertible debt interest payment (in shares)
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Percent
Other, Percentage
Tabular disclosure of the summarized income statement of an equity method investment.
Summarized Income Statement of Equity Method Investment [Table Text Block]
Ownership [Axis]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)
Former Address [Member]
Former Address [Member]
Royal Alaska, LLC [Member]
Royal Alaska, LLC.
Royal Alaska, LLC [Member]
State of Alaska mining claims and upland mining leases [Member]
State of alaska mining claims and upland mining leases.
State of Alaska Mining Claims and Upland Mining Leases [Member]
Payment of Financing and Stock Issuance Costs
Payment of Financing and Stock Issuance Costs, Total
Underwriting discounts and offering expenses
Bonnie Broman [Member]
Bonnie Broman.
Represents the suspended losses incurred during the period. This may be for, example, an equity method investment.
ctgo_SuspendedLosses
Suspended Losses
US
Income (Loss) from Continuing Operations before Income Taxes, Domestic
Depreciation expense
Depreciation, Total
Depreciation expense
Represents sales agreement.
Sales Agreement [Member]
Proceeds from Issuance of Long-Term Debt, Total
Cash proceeds from debt, net
Proceeds from Issuance of Long-Term Debt
Cash proceeds from debt
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount
Compensation Amount
Compensation amount
Compensation amount
Common stock, shares outstanding (in shares)
Common Stock, Shares, Outstanding, Ending Balance
Common Stock, Shares, Outstanding, Beginning Balance
Common stock, shares outstanding (in shares)
Common Stock, Shares, Outstanding (in shares)
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Cybersecurity Risk Management Processes Integrated [Flag]
Document Transition Report
Deferred Tax Assets, Net
Net deferred liability
Net deferred liability
Net deferred tax asset / (liability)
Net deferred tax asset / (liability)
Components of General and Administrative Expenses
Schedule of Components of General and Administrative Expenses [Table Text Block]
Tabular disclosure of each detailed components of general and administrative expenses.
Amended Facility [Member]
Amended facility.
Amended Facility [Member]
Derivative Instrument Detail [Abstract]
Asset Impairment Charges, Total
us-gaap_AssetImpairmentCharges
Less: Accumulated impairment
Cost of Revenue
Cost of Revenue, Total
Cost of sales
Cost of sales
Office and administrative costs
Office and Administrative Costs
Office and administrative costs.
Cash distribution from Peak Gold, LLC
Cash distribution received
Cash distribution received
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Unrealized gain/(loss) on derivative contracts
Unrealized loss on derivative contracts
Unrealized Gain (Loss) on Derivatives
Unrealized loss from derivative contracts
Statement of Cash Flows [Abstract]
The percent of net smelter returns silver royalty.
ctgo_NetSmelterReturnsSilverRoyaltyPercent
Net Smelter Returns Silver Royalty, Percent
Discretionary Bonus
Discretionary bonus.
Discretionary bonus
Federal
Issuance of common stock
Common stock issuance
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
Commodity Contract 2027 [Member]
Commodity contract 2027.
Payments to Acquire Businesses, Net of Cash Acquired, Total
us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
Cash consideration paid for Avidian Alaska Acquisition
Acquisition of HighGold Mining Inc. and Avidian Gold Corp., net of cash acquired
Equity [Text Block]
Stockholders' Equity
Contract Settlement Amount
Contract settlement amount.
Settlement amount
Net Loss Per Share
Earnings Per Share [Text Block]
Measurement Input, Expected Dividend Rate [Member]
Deferred Tax Liabilities, Other
Other Liabilities
Other Liabilities
Cybersecurity Risk Management Processes Integrated [Text Block]
NET LOSS
Net loss
Due on Settlement of Withholding Contingency [Member]
Tranche Two [Member]
Tranche two.
Shares Repurchased For Tax Withholdings On Share Based Awards
Shares repurchased for tax withholdings on share based awards.
Shares repurchased for tax withholdings on share-based awards
Debt Disclosure [Line Items]
Debt disclosure.
Four Employees.
Four Employees [Member]
Executive Vice President [Member]
Other income
Other income
Warrants and Rights Outstanding, Term
Warrants exercisable term
Number of hedged gold delivery
Number of hedged gold delivery
Income taxes receivable
Income Taxes Receivable, Current
Represents Cantor Fitzgerald & Co..
Cantor Fitzgerald & Co. [Member]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate
Relating to awards granted February 7, 2023.
Awards Granted February 7, 2023 [member]
Represents the liquidity facility.
Liquidity Facility [Member]
Derivatives, Fair Value [Line Items]
Income Tax Authority, Name [Axis]
us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Decrease (increase) in prepaid expenses and other
(Increase)/decrease in prepaid expenses and other
Amortization of debt discount and issuance costs
Amortization of Debt Issuance Costs and Discounts, Total
Amortization of Debt Issuance Costs and Discounts
Amortization of debt discount and debt issuance fees
Name of Property [Domain]
Document Fiscal Year Focus
Chief Financing Officer And Secretary [Member]
Chief Financing Officer and Secretary.
Chief Financing Officer and Secretary [Member]
CASH FLOWS FROM INVESTING ACTIVITIES:
Accounts payable
Accounts Payable, Current, Total
Accounts payable
Peak Gold JV [Member]
Joint Venture Company [Member]
Joint Venture Company
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested in Period, Fair Value
Schedule of Components of Income Before Taxes [Table Text Block]
Represents unsecured convertible debenture.
Unsecured Convertible Debenture [Member]
us-gaap_DeferredFederalIncomeTaxExpenseBenefit
Federal
Deferred Tax Assets:
Components of Deferred Tax Assets [Abstract]
Fair Value Measurement, Policy [Policy Text Block]
Represents Adjusted Term SOFR.
Adjusted Term SOFR [Member]
MergeCo [Member]
MergeCo.
Royalty value greater than amount
Royalty value greater than amount.
Royalty value greater than amount
Fair Value Disclosures [Abstract]
Commitments and Contingencies Disclosure [Abstract]
CANADA
Canada
The percentage of the payout to be paid in the form of restricted stock under the short term incentive plan.
ctgo_ShortTermIncentivePlanPayoutPercentageRestrictedStock
Short Term Incentive Plan, Payout, Percentage Restricted Stock
Stock Issued During Period, Value, Acquisitions
Issuance of common stock from acquisitions
Represents information pertaining to the Tetlin Lease and certain other properties.
Tetlin Lease and Certain Other Properties [Member]
Document Period Start Date
Represents information pertaining to the Contango ORE, Inc. Equity Compensation Plan, adopted by the Board of Directors on September 15, 2010.
The 2010 Plan [Member]
Dolly Varden Silver Corporation [Member]
Dolly Varden Silver Corporation.
Dolly Varden [Member]
Net Income (Loss) Available to Common Stockholders, Basic
Net Income (Loss) Available to Common Stockholders, Basic, Total
Net loss attributable to common stock, basic
Initial Purchase Price Under Stock Purchase Agreement
Initial purchase price under stock purchase agreement.
Initial purchase price
Long-Term Line of Credit
Long-Term Line of Credit, Total
Outstanding term loan facility
Debt Instrument [Axis]
Derivative Instrument [Axis]
us-gaap_AssetAcquisitionConsiderationTransferredEquityInterestIssuedAndIssuable
Asset Acquisition, Consideration Transferred, Equity Interest Issued and Issuable
Asset acquisition, consideration in shares
Exploration budget amount funded by the company for next fiscal year
Equity Method Investment Entity Shares Of Exploration Budget Funded Amount For Next Fiscal Year
Equity method investment entity shares of exploration budget funded amount for next fiscal year.
Share-Based Payment Arrangement [Abstract]
Sale of Stock [Axis]
Working capital deficit
Working Capital Deficit
Working capital deficit.
Debt Instrument, Fair Value Disclosure, Total
us-gaap_DebtInstrumentFairValue
Debt Instrument, Fair Value Disclosure
Equity Method Investments and Joint Ventures Disclosure [Text Block]
Investment in Peak Gold JV
Revenue
Revenues
Revenues, Total
us-gaap_NetCashProvidedByUsedInInvestingActivities
Net cash provided by/(used in) investing activities
Private Placement [Member]
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic, Total
Less: Loss attributable to participating securities
Title of 12(b) Security
Schedule of Segment Reporting Information, by Segment [Table]
Derivatives and Hedging Activities
Derivative Instruments and Hedging Activities Disclosure [Text Block]
Income Tax Paid, by Individual Jurisdiction [Table]
Related and Nonrelated Parties [Domain]
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING
Income Taxes
Income Tax Disclosure [Text Block]
Stock Issued During Period Value Warrants Issuance
Stock issued during period value warrants issuance.
Issuance of warrants
Collaborative Arrangement and Arrangement Other than Collaborative [Table]
us-gaap_EquityMethodInvestmentAggregateCost
Equity Method Investment, Aggregate Cost
Document Information [Table]
Asset Acquisition, recognized amount for deferred consideration
Asset Acquisition, recognized amount for deferred consideration.
Asset Acquisition, recognized amount for deferred consideration
Consolidated Entities [Axis]
Represents information that would apply under the second scenario mentioned.
Scenario 2 [Member]
Legal Entity [Axis]
Changes in operating assets and liabilities:
Property, Plant and Equipment [Table Text Block]
Income Tax Disclosure [Abstract]
Fair Value, Recurring and Nonrecurring [Table]
Business Combination [Text Block]
Acquisitions
Unrecognized Tax Benefits, Ending Balance
Unrecognized Tax Benefits, Beginning Balance
us-gaap_UnrecognizedTaxBenefits
Unrecognized Tax Benefits, Ending Balance
Unrecognized tax benefits
Additional Paid-in Capital [Member]
Represents the amount of the exploration budget that has been funded as of the specified date.
ctgo_ExplorationBudgetFundedAmount
Exploration Budget, Funded Amount
Share Repurchase Program, Authorized, Amount
Initial consideration
Trading Symbol
Property & Equipment
Property, Plant and Equipment Disclosure [Text Block]
Insurance
Insurance Tax
Open Tax Year
Tax years remain open for examination
Related Party Transaction [Table]
Amount of claim rental expense.
ctgo_ClaimRentalExpense
Claim rental expense
The amount of expected cash needed.
ctgo_ExpectedCashNeeded
Expected Cash Needed
Subsequent Event Type [Axis]
CASH FLOWS FROM FINANCING ACTIVITIES:
Schedule of Equity Method Investments [Line Items]
Shares to be paid upon settlement of withholding contingency
Business Combination Consideration To Be Paid Upon Settlement Of Withholding Contingency
Business combination consideration to be paid upon settlement of withholding contingency.
Equity Components [Axis]
Derivatives
Deferred Tax Assets, Derivative Instruments
Gold fee percentage
Gold Fee Percentage
Gold fee percentage.
Liquidity [Abstract]
Liquidity.
us-gaap_NonoperatingIncomeExpense
Total other income/(expense)
Capitalized deferred acquisition costs
Capitalized Deferred Acquisition Costs
Capitalized deferred acquisition costs.
Equity Component [Domain]
Settlement of Derivative Non Monetary Notional Amount Mass
Settlement of derivative non monetary notional amount mass.
Settlement of derivative, nonmonetary notional amount, mass (Ounce)
Price per pre-funded warrant
Price per Pre-Funded Warrant
Price per pre-funded warrant.
Volume (Ounce)
us-gaap_DerivativeNonmonetaryNotionalAmountMass
Derivative, Nonmonetary Notional Amount, Mass (Ounce)
Address Type [Domain]
Document Annual Report
Represents senior secured loan facility.
Senior Secured Loan Facility [Member]
Business Combination [Axis]
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures, Total
Restricted shares activity (in shares)
Restricted shares grants (in shares)
Machinery and Equipment [Member]
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)
Reciprocal termination fee
Reciprocal Termination Fee
Reciprocal termination fee.
Building and Building Improvements [Member]
Number of shares available to trade
Number of shares available to trade.
Number of shares available to trade
Equity Method Investment, Nonconsolidated Investee [Axis]
Maximum [Member]
Entity Addresses, Address Type [Axis]
Designated as Hedging Instrument [Member]
Designated as Hedging Instrument [Member]
Represents the first production threshold.
Production Threshold, One [Member]
Statistical Measurement [Axis]
Prepaid Expense, Current
Prepaid expenses and other
Prepaid Expense, Current, Total
Prepaid expenses and other
Common Stock, $0.01 par value, 45,000,000 shares authorized; 7,781,690 shares issued and outstanding as of June 30, 2023; 6,860,420 shares issued and 6,769,923 shares outstanding at June 30, 2022
Common Stock, $0.01 par value, 45,000,000 shares authorized; 14,968,929 shares issued and 14,966,449 shares outstanding as of December 31, 2025; 12,230,959 shares issued and 12,228,479 shares outstanding as of December 31, 2024
Information pertaining to the Alaska department of Revenue.
Alaska Department of Revenue [Member]
General exploration expenses
General exploration expenses.
General exploration expenses
Net Income (Loss) Available to Common Stockholders, Diluted
Net Income (Loss) Available to Common Stockholders, Diluted, Total
Net loss attributable to common stock, diluted
Derivative contract asset - current
Derivative Asset, Current
Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance
Equity, Including Portion Attributable to Noncontrolling Interest, Beginning Balance
Equity, Including Portion Attributable to Noncontrolling Interest, Total
us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
MEMBERS’ EQUITY
Summary of Significant Accounting Policies [Table]
Summary of significant accounting policies.
Debt Instrument, Applicable Margin
Debt Instrument, Current Applicable Margin
Debt Instrument, current applicable margin.
Deferred Tax Assets, Operating Loss Carryforwards, Total
Net operating losses
Omnibus Royalty Agreement [Member]
Omnibus royalty agreement.
Omnibus Royalty Agreement [Member]
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]
Loss / (gain) from derivative contracts
Gain (Loss) on Sale of Derivatives
Gain/(loss) on derivative contracts
Loss from derivative contracts
Loss on derivative contracts
Drawdown of Silver Royalty
Drawdown of Silver Royalty
Drawdown of silver royalty.
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to return to provision.
Return to provision
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent
State income taxes expense, net of federal income tax effect, Percentage
Represents the amount of payment that the lessor may make to the lessee in order to increase the royalty rate by a specified percentage.
ctgo_PaymentThatLessorMayPayToLesseeToIncreaseRoyaltyRate
Payment that Lessor May Pay to Lessee to Increase Royalty Rate
HighGold Acquisition [Member]
HighGold acquisition.
Entity Public Float
Preferred stock, shares authorized (in shares)
Preferred Stock, Shares Authorized (in shares)
us-gaap_CostsAndExpenses
Total expenses
Total expenses
Schedule of Debt [Table Text Block]
The exercise price of each right pursuant to the rights agreement.
ctgo_RightsAgreementExercisePrice
Rights Agreement, Exercise Price (in dollars per share)
Valdez Creek Mining District on Eastern Edge of Alaska Range [Member]
Valdez Creek Mining District on eastern edge of Alaska Range [Member]
Valdez creek mining district on eastern edge of alaska range.
Accounts Payable and Other Accrued Liabilities
Accounts payable and accrued liabilities
Effective Income Tax Rate Reconciliation, Cross-Border Tax Effect, Percent
Effective Income Tax Rate Reconciliation, Cross-Border Tax Effect, Percent, Total
Effect of cross-border tax laws, Percentage
Related Party Transaction [Line Items]
Business Combination [Table]
Entity Registrant Name
Debt
Debt Disclosure [Text Block]
Income Tax Disclosure [Line Items]
Income Tax Disclosure.
Entity Voluntary Filers
Other Nonoperating Income (Expense)
Other Nonoperating Income (Expense), Total
Other expenses
us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit
State
Subsequent Events [Abstract]
Represents the State of Alaska mining claims located near Eagle/Hona Property.
State of Alaska Mining Claims Located Near Eagle/Hona Property [Member]
Cybersecurity Risk Management Positions or Committees Responsible [Flag]
Consolidated Entities [Domain]
Awards Granted August 18, 2023 and October 10, 2023 [Member]
Awards granted August 18, 2023 and October 10, 2023.
us-gaap_IncomeTaxExpenseBenefit
Income tax benefit
Income tax (benefit) / expense
Income tax (benefit) / expense
Income tax (benefit) / expense
Income tax (expense) / benefit
Income tax (expense) / benefit
Payments to Acquire Productive Assets
Payments to Acquire Productive Assets, Total
Asset acquisition, cash consideration
Gross proceeds
Proceeds from Issuance of Common Stock
Investment Company [Abstract]
Business Combination, Contingent Consideration, Type [Axis]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Represents the overriding royalty interest the company would be required to pay if any of the properties are placed into commercial production.
ctgo_OverridingRoyaltyInterest
Overriding Royalty Interest
Subsidiary, Ownership Percentage, Noncontrolling Owner
Shareholders ownership percentage in combined company
Entity Common Stock, Shares Outstanding
Consolidation Items [Axis]
Exploration budget funded amount for next fiscal year
Exploration Budget Funded Amount For Next Fiscal Year
Exploration budget funded amount for next fiscal year.
Related to KG Mining.
KG Mining [Member]
KG Mining [Member]
Represents information relating to the amended and restated 2010 Equity Compensation Plan.
Amended Equity Plan [Member]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)
Restricted shares granted
us-gaap_Assets
TOTAL ASSETS
Total Assets
Property, Plant and Equipment [Table]
Income Tax Paid, State and Local, after Refund Received
Income Tax Paid, State and Local, after Refund Received, Total
US - State
Income Statement [Abstract]
Represents an increase in the percentage of the royalty payable.
ctgo_IncreaseInRoyaltyRates
Increase in Royalty Rates
Share-Based Payment Arrangement [Policy Text Block]
us-gaap_DeferredIncomeTaxExpenseBenefit
Total deferred income tax (benefit) / expense
Deferred tax expense/(benefit)
HighGold Mining Inc. [Member]
HighGold Mining Inc.
HighGold Mining Inc. [Member]
Issuance of common stock (in shares)
Common stock issuance (in shares)
Stock Issued During Period, Shares, New Issues (in shares)
Arrangement Agreement [Member]
Arrangement agreement.
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)
Restricted shares vested
Business Combination [Abstract]
Earnings Per Share, Diluted, Total
Diluted EPS (in dollars per share)
Loss Per Share, diluted (in dollars per share)
Net loss per share, diluted
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Schedule of Segment Information
Operating Segments [Member]
Title and Position [Domain]
Asset Acquisition [Axis]
City Area Code
Represents the royalty rate required to be paid under an agreement.
ctgo_RoyaltyRate
Royalty Rate
Auditor Name
Related to computer and office equipment.
Computer and Office Equipment [Member]
Debt Instrument, Face Amount
Principal amount, Beginning balance
Principal amount, Beginning balance
Principal amount, Ending balance
Principal amount
Principal amount - Term debt
Related to Contango Minerals.
Contango Minerals [Member]
us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Line of Credit Facility, Maximum Borrowing Capacity
Business Combination [Line Items]
Represents the percentage of par related to redeemable debt instrument based on market price of common stock being at least 130%.
ctgo_DebtInstrumentCovenantRedeemablePercentageOfPar
Debt Instrument, Covenant, Redeemable, Percentage of Par
Counterparty Name [Domain]
Percentage of outstanding shares
Percentage of Outstanding Shares
Percentage of utstanding shares.
Represents the number of warrants or rights to be distributed for each share of common stock.
ctgo_ClassOfWarrantOrRightDistributedForEachShareOfCommonStock
Class of Warrant or Right, Distributed for Each Share of Common Stock (in shares)
Segment Reporting Information [Line Items]
Exchange ratio
Stockholders' Equity Note, Stock Split, Conversion Ratio
Represents percentage of interest acquired in asset acquisition.
ctgo_AssetAcquisitionPercentageOfInterestsAcquired
Asset Acquisition Percentage of Interests Acquired
Gross Liability
Derivative Liability, Subject to Master Netting Arrangement, before Offset
Cash and Cash Equivalents, Policy [Policy Text Block]
Proceeds from Equity Method Investment, Distribution
Distributions received from Peak Gold, LLC
Business Combination, Consideration Transferred, Equity Interest
Total equity value
Schedule Of Liquidity [Table]
SchSchedule of liquidity.
Contribution of Unbudgeted Cash
Unbudgeted Amount
Unbudgeted amount.
Derivative Liability - current
Derivative Liability, Current
Derivative contract liability
Property & equipment, net
Property & equipment, net
Property & Equipment, net
Represents information pertaining to the Tetlin lease.
Tetlin Lease [Member]
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures, Total
Restricted shares activity
Restricted shares grants
Related to December 2022 and January 2023 Warrants.
December 2022 and January 2023 Warrants [Member]
Represents the State of Alaska mining claims located in Richardson District.
State of Alaska Mining Claims Located in Richardson District [Member]
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations, Total
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH, BEGINNING OF YEAR
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH, END OF YEAR
Operating Income (Loss)
Total income from operations
Amount of interest in projected production as percentage.
ctgo_InterestInProjectedProductionPercentage
Interest in Projected Production, Percentage
Accumulated Deficit [Member]
Retained Earnings [Member]
Business Combination, Contingent Consideration, Type [Domain]
Assets, Noncurrent, Total
us-gaap_AssetsNoncurrent
Non-current assets
Mining Properties and Mineral Rights [Member]
Share-Based Payment Arrangement, Noncash Expense, Total
us-gaap_ShareBasedCompensation
Stock-based compensation
Share-based compensation
Asset Acquisition, Consideration Transferred
Asset Acquisition, Consideration Transferred, Total
Asset acquisition, total consideration
Measurement Input, Price Volatility [Member]
Net Income Loss Per Share [Line Items]
Net income loss per share.
us-gaap_LiabilitiesNoncurrent
Total non-current liabilities
Non-current liabilities
Operating Lease, Liability, Noncurrent
Lease payable
Fair Value, Inputs, Level 1 [Member]
Class of Stock [Line Items]
Net cash provided by financing activities
us-gaap_NetCashProvidedByUsedInFinancingActivities
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to convertible debt interest.
Convertible debt interest
Auditor Location
Debt disclosure.
Debt Disclosure [Table]
Deferred Income Tax Liabilities, Net
Deferred tax liability
Secured Credit Facility [Member]
Secured Debt [Member]
OTHER INCOME/(EXPENSE):
OTHER INCOME/(EXPENSE):
Derivative Liability - noncurrent
Derivative Liability, Noncurrent
Derivative contract liability
Derivative Contract [Domain]
Asset Acquisition, Contingent Consideration Payable
Asset Acquisition Contingent Consideration Payable
Asset acquisition contingent consideration payable.
Value of treasury shares or units reissued. Excludes reissuance of shares or units in treasury for award under share-based payment arrangement.
Treasury shares issued
Treasury shares issued in common stock issuance
Income Tax Jurisdiction [Domain]
The net cash inflow from the additional capital contribution to the entity.
ctgo_ProceedsFromIssuanceOfCommonStockNet
Proceeds from Issuance of Common Stock, Net
Entity Interactive Data Current
CASH FLOWS FROM OPERATING ACTIVITIES:
Furniture and Fixtures [Member]
Interest expense paid in stock
Interest expense paid in stock
Interest expense paid in stock
Shares issued
Business Combination, Consideration Transferred, Equity Interest, Share Issued, Number of Shares
Components of Deferred Tax Liabilities [Abstract]
Deferred Tax Liabilities
Entity Tax Identification Number
Repurchase Agreements and Similar Transactions, Maturity Periods [Domain]
Number of shares issued as a result of warrants exercised.
Stock Issued During Period, Shares, Warrants Exercised (in shares)
Warrants (in shares)
Land [Member]
us-gaap_SharePrice
Share Price (in dollars per share)
Share of gold percentage purchased to physically deliver gold as stipulated in hedge agreement
Share of gold percentage purchased to physically deliver gold as stipulated in hedge agreement
Share of gold percentage purchased to physically deliver gold as stipulated in hedge agreement.
Long-Term Debt, Type [Axis]
Tabular disclosure of the summarized balance sheet of an equity method investment.
Summarized Balance Sheet of Equity Method Investment [Table Text Block]
Organization and Business
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
Marketable Security, Unrealized Gain (Loss)
Unrealized gain/(loss) on marketable securities
Unrealized (gain)/loss from marketable securities
Unrealized loss from marketable securities
Income Tax Authority, Name [Domain]
Represents maximum percentage of shares transferable without notifying in advance.
ctgo_InvestorRightAgreementMaximumPercentageOfSharesTransferableWithoutNotifyingInAdvance
Investor Right Agreement, Maximum Percentage of Shares Transferable without Notifying in Advance
Tranche One [Member]
Tranche one.
Deposit [Member]
Expected cash needed amended amount.
Expected Cash Needed Amended Amount
Expected Cash Needed Amended Amount
Proceeds from Issuance or Sale of Equity
Proceeds from Issuance or Sale of Equity, Total
Capital raises for net proceeds
Local Phone Number
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount
Accrued transaction costs for HighGold acquisition
Accrued transaction costs for acquisition
Accrued transaction costs for acquisition.
HighGold Acquisition 1 [Member]
HighGold acquisition 1.
Highgold Acquisition [Member]
Auditor Opinion [Text Block]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Forfeitures (in shares)
Shares Repurchased During Period Shares For Tax Withholdings On Share Based Awards
Shares repurchased during period shares for tax withholdings on share based awards.
Shares repurchased for tax withholdings on share-based awards (in shares)
Payments of Financing Costs, Total
us-gaap_PaymentsOfFinancingCosts
Debt issuance costs
Derivatives, Embedded Derivatives [Policy Text Block]
Balance remaining from sales agreement
Balance Remaining from Sales Agreement
Balance remaining from sales agreement.
us-gaap_AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts
Cost of common stock issuance
Transition Period Comparative Data
Transition Period Comparative Datas Table [TextBlock]
Transition period comparative datas table.
Accounting Policies [Abstract]
Reduction of derivative nonmonetary notional amount, (Ounce)
Reduction Of Derivative Nonmonetary Notional Amount Mass
Reduction of derivative nonmonetary notional amount mass.
Insurance recoveries
Insurance recoveries
Total non-cash investing and financing activities:
The fair value of investing activities assumed in noncash investing or financing activities.
Total non-cash investing and financing activities:
Total non-cash investing and financing activities
General and Administrative Expense [Abstract]
Percentage of Ownership Purchase
Percentage of Ownership Purchase
Percentage of ownership purchase.
The percentage of base salary to be paid if minimum performance target is met under the short term incentive plan.
ctgo_ShortTermIncentivePlanMinimumPerformanceTargetPayoutPercentageOfBaseSalary
Short Term Incentive Plan, Minimum Performance Target, Payout, Percentage of Base Salary
Salaries and benefits
Labor and Related Expense
us-gaap_ImpairmentChargeOnReclassifiedAssets
Impairment Charge on Reclassified Assets
Stock, Class of Stock [Table]
Entity Emerging Growth Company
CIRI [Member]
C I R I [Member]
CIRI.
us-gaap_AreaOfLand
Area of Land (Acre)