3.24.2.u1 html 245 315 1 false 92 0 false 8 false false R1.htm 100000 - Document - Document And Entity Information Sheet http://www.contangoore.com/20240630/taxonomy/role/statement-document-and-entity-information Document And Entity Information Cover 1 false false R2.htm 100010 - Statement - Condensed Consolidated Balance Sheets (Current Period Unaudited) Sheet http://www.contangoore.com/20240630/taxonomy/role/statement-condensed-consolidated-balance-sheets-current-period-unaudited Condensed Consolidated Balance Sheets (Current Period Unaudited) Statements 2 false false R3.htm 100030 - Statement - Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) Sheet http://www.contangoore.com/20240630/taxonomy/role/statement-condensed-consolidated-balance-sheets-current-period-unaudited-parentheticals Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) Statements 3 false false R4.htm 100040 - Statement - Condensed Consolidated Statements of Operations (Unaudited) Sheet http://www.contangoore.com/20240630/taxonomy/role/statement-condensed-consolidated-statements-of-operations-unaudited Condensed Consolidated Statements of Operations (Unaudited) Statements 4 false false R5.htm 100050 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) Sheet http://www.contangoore.com/20240630/taxonomy/role/statement-condensed-consolidated-statements-of-cash-flows-unaudited Condensed Consolidated Statements of Cash Flows (Unaudited) Statements 5 false false R6.htm 100060 - Statement - Condensed Consolidated Statement of Stockholders' Equity (Deficit) (Unaudited) Sheet http://www.contangoore.com/20240630/taxonomy/role/statement-condensed-consolidated-statement-of-stockholders-equity-deficit-unaudited Condensed Consolidated Statement of Stockholders' Equity (Deficit) (Unaudited) Statements 6 false false R7.htm 995410 - Disclosure - Pay vs Performance Disclosure Sheet http://xbrl.sec.gov/ecd/role/PvpDisclosure Pay vs Performance Disclosure Notes 7 false false R8.htm 995457 - Disclosure - Note 1 - Organization and Business Sheet http://www.contangoore.com/20240630/taxonomy/role/statement-note-1-organization-and-business Note 1 - Organization and Business Notes 8 false false R9.htm 995467 - Disclosure - Note 2 - Basis of Presentation Sheet http://www.contangoore.com/20240630/taxonomy/role/statement-note-2-basis-of-presentation Note 2 - Basis of Presentation Notes 9 false false R10.htm 995477 - Disclosure - Note 3 - Liquidity Sheet http://www.contangoore.com/20240630/taxonomy/role/statement-note-3-liquidity Note 3 - Liquidity Notes 10 false false R11.htm 995487 - Disclosure - Note 4 - Summary of Significant Accounting Policies Sheet http://www.contangoore.com/20240630/taxonomy/role/statement-note-4-summary-of-significant-accounting-policies Note 4 - Summary of Significant Accounting Policies Notes 11 false false R12.htm 995497 - Disclosure - Note 5 - Investment in the Peak Gold JV Sheet http://www.contangoore.com/20240630/taxonomy/role/statement-note-5-investment-in-the-peak-gold-jv Note 5 - Investment in the Peak Gold JV Notes 12 false false R13.htm 995507 - Disclosure - Note 6 - Prepaid Expenses and Other Sheet http://www.contangoore.com/20240630/taxonomy/role/statement-note-6-prepaid-expenses-and-other Note 6 - Prepaid Expenses and Other Notes 13 false false R14.htm 995517 - Disclosure - Note 7 - Net Loss Per Share Sheet http://www.contangoore.com/20240630/taxonomy/role/statement-note-7-net-loss-per-share Note 7 - Net Loss Per Share Notes 14 false false R15.htm 995527 - Disclosure - Note 8 - Stockholders' Equity (Deficit) Sheet http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote8StockholdersEquityDeficit Note 8 - Stockholders' Equity (Deficit) Notes 15 false false R16.htm 995537 - Disclosure - Note 9 - Property & Equipment Sheet http://www.contangoore.com/20240630/taxonomy/role/statement-note-9-property-equipment Note 9 - Property & Equipment Notes 16 false false R17.htm 995547 - Disclosure - Note 10 - Stock-Based Compensation Sheet http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote10StockbasedCompensation Note 10 - Stock-Based Compensation Notes 17 false false R18.htm 995557 - Disclosure - Note 11 - Commitments and Contingencies Sheet http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote11CommitmentsAndContingencies Note 11 - Commitments and Contingencies Notes 18 false false R19.htm 995567 - Disclosure - Note 12 - Income Taxes Sheet http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote12IncomeTaxes Note 12 - Income Taxes Notes 19 false false R20.htm 995577 - Disclosure - Note 13 - Debt Sheet http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote13Debt Note 13 - Debt Notes 20 false false R21.htm 995587 - Disclosure - Note 14 - Derivatives and Hedging Activities Sheet http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote14DerivativesAndHedgingActivities1 Note 14 - Derivatives and Hedging Activities Notes 21 false false R22.htm 995597 - Disclosure - Note 15 - Fair Value Measurement Sheet http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote15FairValueMeasurement1 Note 15 - Fair Value Measurement Notes 22 false false R23.htm 995607 - Disclosure - Note 16 - General and Administrative Expenses Sheet http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote16GeneralAndAdministrativeExpenses Note 16 - General and Administrative Expenses Notes 23 false false R24.htm 995617 - Disclosure - Note 17 - Subsequent Events Sheet http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote17SubsequentEvents1 Note 17 - Subsequent Events Notes 24 false false R25.htm 995627 - Disclosure - Note 5 - Investment in the Peak Gold JV (Tables) Sheet http://www.contangoore.com/20240630/taxonomy/role/statement-note-5-investment-in-the-peak-gold-jv-tables Note 5 - Investment in the Peak Gold JV (Tables) Tables http://www.contangoore.com/20240630/taxonomy/role/statement-note-5-investment-in-the-peak-gold-jv 25 false false R26.htm 995637 - Disclosure - Note 7 - Net Loss Per Share (Tables) Sheet http://www.contangoore.com/20240630/taxonomy/role/statement-note-7-net-loss-per-share-tables Note 7 - Net Loss Per Share (Tables) Tables http://www.contangoore.com/20240630/taxonomy/role/statement-note-7-net-loss-per-share 26 false false R27.htm 995647 - Disclosure - Note 9 - Property & Equipment (Tables) Sheet http://www.contangoore.com/20240630/taxonomy/role/statement-note-9-property-equipment-tables Note 9 - Property & Equipment (Tables) Tables http://www.contangoore.com/20240630/taxonomy/role/statement-note-9-property-equipment 27 false false R28.htm 995657 - Disclosure - Note 10 - Stock-Based Compensation (Tables) Sheet http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote10StockbasedCompensationTables Note 10 - Stock-Based Compensation (Tables) Tables http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote10StockbasedCompensation 28 false false R29.htm 995667 - Disclosure - Note 13 - Debt (Tables) Sheet http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote13DebtTables Note 13 - Debt (Tables) Tables http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote13Debt 29 false false R30.htm 995677 - Disclosure - Note 14 - Derivatives and Hedging Activities (Tables) Sheet http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote14DerivativesAndHedgingActivitiesTables Note 14 - Derivatives and Hedging Activities (Tables) Tables http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote14DerivativesAndHedgingActivities1 30 false false R31.htm 995687 - Disclosure - Note 15 - Fair Value Measurement (Tables) Sheet http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote15FairValueMeasurementTables Note 15 - Fair Value Measurement (Tables) Tables http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote15FairValueMeasurement1 31 false false R32.htm 995697 - Disclosure - Note 16 - General and Administrative Expenses (Tables) Sheet http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote16GeneralAndAdministrativeExpensesTables Note 16 - General and Administrative Expenses (Tables) Tables http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote16GeneralAndAdministrativeExpenses 32 false false R33.htm 995707 - Disclosure - Note 1 - Organization and Business (Details Textual) Sheet http://www.contangoore.com/20240630/taxonomy/role/statement-note-1-organization-and-business-details-textual Note 1 - Organization and Business (Details Textual) Details http://www.contangoore.com/20240630/taxonomy/role/statement-note-1-organization-and-business 33 false false R34.htm 995717 - Disclosure - Note 3 - Liquidity (Details Textual) Sheet http://www.contangoore.com/20240630/taxonomy/role/statement-note-3-liquidity-details-textual Note 3 - Liquidity (Details Textual) Details http://www.contangoore.com/20240630/taxonomy/role/statement-note-3-liquidity 34 false false R35.htm 995727 - Disclosure - Note 5 - Investment in the Peak Gold JV (Details Textual) Sheet http://www.contangoore.com/20240630/taxonomy/role/statement-note-5-investment-in-the-peak-gold-jv-details-textual Note 5 - Investment in the Peak Gold JV (Details Textual) Details http://www.contangoore.com/20240630/taxonomy/role/statement-note-5-investment-in-the-peak-gold-jv-tables 35 false false R36.htm 995737 - Disclosure - Note 5 - Investment in Peak Gold JV - Roll-forward of Investment in the Joint Venture Company (Details) Sheet http://www.contangoore.com/20240630/taxonomy/role/statement-note-5-investment-in-peak-gold-jv-rollforward-of-investment-in-the-joint-venture-company-details Note 5 - Investment in Peak Gold JV - Roll-forward of Investment in the Joint Venture Company (Details) Details 36 false false R37.htm 995747 - Disclosure - Note 5 - Investment in Peak Gold JV - Condensed Results of Operations for Peak Gold, LLC (Details) Sheet http://www.contangoore.com/20240630/taxonomy/role/statement-note-5-investment-in-peak-gold-jv-condensed-results-of-operations-for-peak-gold-llc-details Note 5 - Investment in Peak Gold JV - Condensed Results of Operations for Peak Gold, LLC (Details) Details 37 false false R38.htm 995757 - Disclosure - Note 6 - Prepaid Expenses and Other (Details Textual) Sheet http://www.contangoore.com/20240630/taxonomy/role/statement-note-6-prepaid-expenses-and-other-details-textual Note 6 - Prepaid Expenses and Other (Details Textual) Details http://www.contangoore.com/20240630/taxonomy/role/statement-note-6-prepaid-expenses-and-other 38 false false R39.htm 995767 - Disclosure - Note 7 - Net Loss Per Share (Details Textual) Sheet http://www.contangoore.com/20240630/taxonomy/role/statement-note-7-net-loss-per-share-details-textual Note 7 - Net Loss Per Share (Details Textual) Details http://www.contangoore.com/20240630/taxonomy/role/statement-note-7-net-loss-per-share-tables 39 false false R40.htm 995777 - Disclosure - Note 7 - Net Loss Per Share - Reconciliation of the Components of Basic and Diluted Net Loss Per Share (Details) Sheet http://www.contangoore.com/20240630/taxonomy/role/statement-note-7-net-loss-per-share-reconciliation-of-the-components-of-basic-and-diluted-net-loss-per-share-details Note 7 - Net Loss Per Share - Reconciliation of the Components of Basic and Diluted Net Loss Per Share (Details) Details 40 false false R41.htm 995787 - Disclosure - Note 8 - Stockholders' Equity (Deficit) (Details Textual) Sheet http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote8StockholdersEquityDeficitDetailsTextual Note 8 - Stockholders' Equity (Deficit) (Details Textual) Details http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote8StockholdersEquityDeficit 41 false false R42.htm 995797 - Disclosure - Note 9 - Property & Equipment - Fixed Assets (Details) Sheet http://www.contangoore.com/20240630/taxonomy/role/statement-note-9-property-equipment-fixed-assets-details Note 9 - Property & Equipment - Fixed Assets (Details) Details 42 false false R43.htm 995807 - Disclosure - Note 10 - Stock-Based Compensation (Details Textual) Sheet http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote10StockbasedCompensationDetailsTextual Note 10 - Stock-Based Compensation (Details Textual) Details http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote10StockbasedCompensationTables 43 false false R44.htm 995817 - Disclosure - Note 10 - Stock-Based Compensation - Schedule of Unvested Restricted Stock (Details) Sheet http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote10StockbasedCompensationScheduleOfUnvestedRestrictedStockDetails Note 10 - Stock-Based Compensation - Schedule of Unvested Restricted Stock (Details) Details 44 false false R45.htm 995827 - Disclosure - Note 10 - Stock-Based Compensation - Summary of Stock Options (Details) Sheet http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote10StockbasedCompensationSummaryOfStockOptionsDetails Note 10 - Stock-Based Compensation - Summary of Stock Options (Details) Details 45 false false R46.htm 995837 - Disclosure - Note 11 - Commitments and Contingencies (Details Textual) Sheet http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote11CommitmentsAndContingenciesDetailsTextual Note 11 - Commitments and Contingencies (Details Textual) Details http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote11CommitmentsAndContingencies 46 false false R47.htm 995847 - Disclosure - Note 12 - Income Taxes (Details Textual) Sheet http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote12IncomeTaxesDetailsTextual Note 12 - Income Taxes (Details Textual) Details http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote12IncomeTaxes 47 false false R48.htm 995857 - Disclosure - Note 13 - Debt - Components of Debt (Details) Sheet http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote13DebtComponentsOfDebtDetails Note 13 - Debt - Components of Debt (Details) Details 48 false false R49.htm 995867 - Disclosure - Note 13 - Debt (Details Textual) Sheet http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote13DebtDetailsTextual Note 13 - Debt (Details Textual) Details http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote13DebtTables 49 false false R50.htm 995877 - Disclosure - Note 14 - Derivatives and Hedging Activities (Details Textual) Sheet http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote14DerivativesAndHedgingActivitiesDetailsTextual Note 14 - Derivatives and Hedging Activities (Details Textual) Details http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote14DerivativesAndHedgingActivitiesTables 50 false false R51.htm 995887 - Disclosure - Note 14 - Derivatives and Hedging Activities - Derivatives Not Designated as Hedging (Details) Sheet http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote14DerivativesAndHedgingActivitiesDerivativesNotDesignatedAsHedgingDetails Note 14 - Derivatives and Hedging Activities - Derivatives Not Designated as Hedging (Details) Details 51 false false R52.htm 995897 - Disclosure - Note 14 - Derivatives and Hedging Activities - Fair Values of Derivative Instruments on the Balance Sheet (Details) Sheet http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote14DerivativesAndHedgingActivitiesFairValuesOfDerivativeInstrumentsOnTheBalanceSheetDetails Note 14 - Derivatives and Hedging Activities - Fair Values of Derivative Instruments on the Balance Sheet (Details) Details 52 false false R53.htm 995907 - Disclosure - Note 14 - Derivatives and Hedging Activities - Effect on Income Statement (Details) Sheet http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote14DerivativesAndHedgingActivitiesEffectOnIncomeStatementDetails Note 14 - Derivatives and Hedging Activities - Effect on Income Statement (Details) Details 53 false false R54.htm 995917 - Disclosure - Note 15 - Fair Value Measurement - Summary of Fair Value (Details) Sheet http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote15FairValueMeasurementSummaryOfFairValueDetails Note 15 - Fair Value Measurement - Summary of Fair Value (Details) Details 54 false false R55.htm 995927 - Disclosure - Note 16 - General and Administrative Expenses - Components of General and Administrative Expenses (Details) Sheet http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote16GeneralAndAdministrativeExpensesComponentsOfGeneralAndAdministrativeExpensesDetails Note 16 - General and Administrative Expenses - Components of General and Administrative Expenses (Details) Details 55 false false R56.htm 995937 - Disclosure - Note 17 - Subsequent Events (Details Textual) Sheet http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote17SubsequentEventsDetailsTextual Note 17 - Subsequent Events (Details Textual) Details http://www.contangoore.com/20240630/taxonomy/role/DisclosureNote17SubsequentEvents1 56 false false All Reports Book All Reports ctgo-20240630.htm ctgo-20240630.xsd http://fasb.org/srt/2024 http://fasb.org/us-gaap/2024 http://xbrl.sec.gov/dei/2024 false false