3.8.0.1 html 906 530 1 true 291 0 false 12 false false R1.htm 101 - Document - Document And Entity Information Sheet http://www.geo-park.com/role/DocumentAndEntityInformation Document And Entity Information Cover 1 false false R2.htm 102 - Statement - CONSOLIDATED STATEMENT OF INCOME Sheet http://www.geo-park.com/role/ConsolidatedStatementOfIncome CONSOLIDATED STATEMENT OF INCOME Statements 2 false false R3.htm 103 - Statement - CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME Sheet http://www.geo-park.com/role/ConsolidatedStatementOfComprehensiveIncome CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME Statements 3 false false R4.htm 104 - Statement - CONSOLIDATED STATEMENT OF FINANCIAL POSITION Sheet http://www.geo-park.com/role/ConsolidatedStatementOfFinancialPosition CONSOLIDATED STATEMENT OF FINANCIAL POSITION Statements 4 false false R5.htm 105 - Statement - CONSOLIDATED STATEMENT OF CHANGES IN EQUITY Sheet http://www.geo-park.com/role/ConsolidatedStatementOfChangesInEquity CONSOLIDATED STATEMENT OF CHANGES IN EQUITY Statements 5 false false R6.htm 106 - Statement - CONSOLIDATED STATEMENT OF CASH FLOW Sheet http://www.geo-park.com/role/ConsolidatedStatementOfCashFlow CONSOLIDATED STATEMENT OF CASH FLOW Statements 6 false false R7.htm 107 - Disclosure - General Information Sheet http://www.geo-park.com/role/GeneralInformation General Information Notes 7 false false R8.htm 108 - Disclosure - Summary of significant accounting policies Sheet http://www.geo-park.com/role/SummaryOfSignificantAccountingPolicies Summary of significant accounting policies Notes 8 false false R9.htm 109 - Disclosure - Financial Instruments-risk management Sheet http://www.geo-park.com/role/FinancialInstrumentsriskManagement Financial Instruments-risk management Notes 9 false false R10.htm 110 - Disclosure - Accounting estimates and assumptions Sheet http://www.geo-park.com/role/AccountingEstimatesAndAssumptions Accounting estimates and assumptions Notes 10 false false R11.htm 111 - Disclosure - Note - Consolidated Statement of Cash Flow Sheet http://www.geo-park.com/role/NoteConsolidatedStatementOfCashFlow Note - Consolidated Statement of Cash Flow Notes 11 false false R12.htm 112 - Disclosure - Segment information Sheet http://www.geo-park.com/role/SegmentInformation Segment information Notes 12 false false R13.htm 113 - Disclosure - Revenue Sheet http://www.geo-park.com/role/Revenue Revenue Notes 13 false false R14.htm 114 - Disclosure - Commodity risk management contracts Sheet http://www.geo-park.com/role/CommodityRiskManagementContracts Commodity risk management contracts Notes 14 false false R15.htm 115 - Disclosure - Production and operating costs Sheet http://www.geo-park.com/role/ProductionAndOperatingCosts Production and operating costs Notes 15 false false R16.htm 116 - Disclosure - Depreciation Sheet http://www.geo-park.com/role/Depreciation Depreciation Notes 16 false false R17.htm 117 - Disclosure - Staff costs and Directors Remuneration Sheet http://www.geo-park.com/role/StaffCostsAndDirectorsRemuneration Staff costs and Directors Remuneration Notes 17 false false R18.htm 118 - Disclosure - Geological and geophysical expenses Sheet http://www.geo-park.com/role/GeologicalAndGeophysicalExpenses Geological and geophysical expenses Notes 18 false false R19.htm 119 - Disclosure - Administrative expenses Sheet http://www.geo-park.com/role/AdministrativeExpenses Administrative expenses Notes 19 false false R20.htm 120 - Disclosure - Selling expenses Sheet http://www.geo-park.com/role/SellingExpenses Selling expenses Notes 20 false false R21.htm 121 - Disclosure - Financial results Sheet http://www.geo-park.com/role/FinancialResults Financial results Notes 21 false false R22.htm 122 - Disclosure - Tax reforms Sheet http://www.geo-park.com/role/TaxReforms Tax reforms Notes 22 false false R23.htm 123 - Disclosure - Income tax Sheet http://www.geo-park.com/role/IncomeTax Income tax Notes 23 false false R24.htm 124 - Disclosure - Deferred income tax Sheet http://www.geo-park.com/role/DeferredIncomeTax Deferred income tax Notes 24 false false R25.htm 125 - Disclosure - Earnings per share Sheet http://www.geo-park.com/role/EarningsPerShare Earnings per share Notes 25 false false R26.htm 126 - Disclosure - Property, plant and equipment Sheet http://www.geo-park.com/role/PropertyPlantAndEquipment Property, plant and equipment Notes 26 false false R27.htm 127 - Disclosure - Subsidiary undertakings Sheet http://www.geo-park.com/role/SubsidiaryUndertakings Subsidiary undertakings Notes 27 false false R28.htm 128 - Disclosure - Prepaid taxes Sheet http://www.geo-park.com/role/PrepaidTaxes Prepaid taxes Notes 28 false false R29.htm 129 - Disclosure - Inventories Sheet http://www.geo-park.com/role/Inventories Inventories Notes 29 false false R30.htm 130 - Disclosure - Trade receivables and Prepayments and other receivables Sheet http://www.geo-park.com/role/TradeReceivablesAndPrepaymentsAndOtherReceivables Trade receivables and Prepayments and other receivables Notes 30 false false R31.htm 131 - Disclosure - Financial instruments by category Sheet http://www.geo-park.com/role/FinancialInstrumentsByCategory Financial instruments by category Notes 31 false false R32.htm 132 - Disclosure - Share capital Sheet http://www.geo-park.com/role/ShareCapital Share capital Notes 32 false false R33.htm 133 - Disclosure - Borrowings Sheet http://www.geo-park.com/role/Borrowings Borrowings Notes 33 false false R34.htm 134 - Disclosure - Provisions and other long-term liabilities Sheet http://www.geo-park.com/role/ProvisionsAndOtherLongtermLiabilities Provisions and other long-term liabilities Notes 34 false false R35.htm 135 - Disclosure - Trade and other payables Sheet http://www.geo-park.com/role/TradeAndOtherPayables Trade and other payables Notes 35 false false R36.htm 136 - Disclosure - Share-based payment Sheet http://www.geo-park.com/role/SharebasedPayment Share-based payment Notes 36 false false R37.htm 137 - Disclosure - Interests in Joint operations Sheet http://www.geo-park.com/role/InterestsInJointOperations Interests in Joint operations Notes 37 false false R38.htm 138 - Disclosure - Commitments Sheet http://www.geo-park.com/role/Commitments Commitments Notes 38 false false R39.htm 139 - Disclosure - Related parties Sheet http://www.geo-park.com/role/RelatedParties Related parties Notes 39 false false R40.htm 140 - Disclosure - Fees paid to Auditors Sheet http://www.geo-park.com/role/FeesPaidToAuditors Fees paid to Auditors Notes 40 false false R41.htm 141 - Disclosure - Business transactions Sheet http://www.geo-park.com/role/BusinessTransactions Business transactions Notes 41 false false R42.htm 142 - Disclosure - Impairment test on Property, plant and equipment Sheet http://www.geo-park.com/role/ImpairmentTestOnPropertyPlantAndEquipment Impairment test on Property, plant and equipment Notes 42 false false R43.htm 143 - Disclosure - Supplemental information on oil and gas activities Sheet http://www.geo-park.com/role/SupplementalInformationOnOilAndGasActivities Supplemental information on oil and gas activities Notes 43 false false R44.htm 144 - Disclosure - Summary of significant accounting policies (Policies) Sheet http://www.geo-park.com/role/SummaryOfSignificantAccountingPoliciesPolicies Summary of significant accounting policies (Policies) Policies http://www.geo-park.com/role/AccountingEstimatesAndAssumptions 44 false false R45.htm 145 - Disclosure - Financial Instruments-risk management (Tables) Sheet http://www.geo-park.com/role/FinancialInstrumentsriskManagementTables Financial Instruments-risk management (Tables) Tables http://www.geo-park.com/role/FinancialInstrumentsriskManagement 45 false false R46.htm 146 - Disclosure - Consolidated Statement of Cash Flow (Tables) Sheet http://www.geo-park.com/role/ConsolidatedStatementOfCashFlowTables Consolidated Statement of Cash Flow (Tables) Tables 46 false false R47.htm 147 - Disclosure - Segment information (Tables) Sheet http://www.geo-park.com/role/SegmentInformationTables Segment information (Tables) Tables http://www.geo-park.com/role/SegmentInformation 47 false false R48.htm 148 - Disclosure - Revenue (Tables) Sheet http://www.geo-park.com/role/RevenueTables Revenue (Tables) Tables http://www.geo-park.com/role/Revenue 48 false false R49.htm 149 - Disclosure - Commodity risk management contracts (Tables) Sheet http://www.geo-park.com/role/CommodityRiskManagementContractsTables Commodity risk management contracts (Tables) Tables http://www.geo-park.com/role/CommodityRiskManagementContracts 49 false false R50.htm 150 - Disclosure - Production and operating costs (Tables) Sheet http://www.geo-park.com/role/ProductionAndOperatingCostsTables Production and operating costs (Tables) Tables http://www.geo-park.com/role/ProductionAndOperatingCosts 50 false false R51.htm 151 - Disclosure - Depreciation (Tables) Sheet http://www.geo-park.com/role/DepreciationTables Depreciation (Tables) Tables http://www.geo-park.com/role/Depreciation 51 false false R52.htm 152 - Disclosure - Staff costs and Directors Remuneration (Tables) Sheet http://www.geo-park.com/role/StaffCostsAndDirectorsRemunerationTables Staff costs and Directors Remuneration (Tables) Tables http://www.geo-park.com/role/StaffCostsAndDirectorsRemuneration 52 false false R53.htm 153 - Disclosure - Geological and geophysical expenses (Tables) Sheet http://www.geo-park.com/role/GeologicalAndGeophysicalExpensesTables Geological and geophysical expenses (Tables) Tables http://www.geo-park.com/role/GeologicalAndGeophysicalExpenses 53 false false R54.htm 154 - Disclosure - Administrative expenses (Tables) Sheet http://www.geo-park.com/role/AdministrativeExpensesTables Administrative expenses (Tables) Tables http://www.geo-park.com/role/AdministrativeExpenses 54 false false R55.htm 155 - Disclosure - Selling expenses (Tables) Sheet http://www.geo-park.com/role/SellingExpensesTables Selling expenses (Tables) Tables http://www.geo-park.com/role/SellingExpenses 55 false false R56.htm 156 - Disclosure - Financial results (Tables) Sheet http://www.geo-park.com/role/FinancialResultsTables Financial results (Tables) Tables http://www.geo-park.com/role/FinancialResults 56 false false R57.htm 157 - Disclosure - Income tax (Tables) Sheet http://www.geo-park.com/role/IncomeTaxTables Income tax (Tables) Tables http://www.geo-park.com/role/IncomeTax 57 false false R58.htm 158 - Disclosure - Deferred income tax (Tables) Sheet http://www.geo-park.com/role/DeferredIncomeTaxTables Deferred income tax (Tables) Tables http://www.geo-park.com/role/DeferredIncomeTax 58 false false R59.htm 159 - Disclosure - Earnings per share (Tables) Sheet http://www.geo-park.com/role/EarningsPerShareTables Earnings per share (Tables) Tables http://www.geo-park.com/role/EarningsPerShare 59 false false R60.htm 160 - Disclosure - Property, plant and equipment (Tables) Sheet http://www.geo-park.com/role/PropertyPlantAndEquipmentTables Property, plant and equipment (Tables) Tables http://www.geo-park.com/role/PropertyPlantAndEquipment 60 false false R61.htm 161 - Disclosure - Subsidiary undertakings (Tables) Sheet http://www.geo-park.com/role/SubsidiaryUndertakingsTables Subsidiary undertakings (Tables) Tables http://www.geo-park.com/role/SubsidiaryUndertakings 61 false false R62.htm 162 - Disclosure - Prepaid taxes (Tables) Sheet http://www.geo-park.com/role/PrepaidTaxesTables Prepaid taxes (Tables) Tables http://www.geo-park.com/role/PrepaidTaxes 62 false false R63.htm 163 - Disclosure - Inventories (Tables) Sheet http://www.geo-park.com/role/InventoriesTables Inventories (Tables) Tables http://www.geo-park.com/role/Inventories 63 false false R64.htm 164 - Disclosure - Trade receivables and Prepayments and other receivables (Tables) Sheet http://www.geo-park.com/role/TradeReceivablesAndPrepaymentsAndOtherReceivablesTables Trade receivables and Prepayments and other receivables (Tables) Tables http://www.geo-park.com/role/TradeReceivablesAndPrepaymentsAndOtherReceivables 64 false false R65.htm 165 - Disclosure - Financial instruments by category (Tables) Sheet http://www.geo-park.com/role/FinancialInstrumentsByCategoryTables Financial instruments by category (Tables) Tables http://www.geo-park.com/role/FinancialInstrumentsByCategory 65 false false R66.htm 166 - Disclosure - Share capital (Tables) Sheet http://www.geo-park.com/role/ShareCapitalTables Share capital (Tables) Tables http://www.geo-park.com/role/ShareCapital 66 false false R67.htm 167 - Disclosure - Borrowings (Tables) Sheet http://www.geo-park.com/role/BorrowingsTables Borrowings (Tables) Tables http://www.geo-park.com/role/Borrowings 67 false false R68.htm 168 - Disclosure - Provisions and other long-term liabilities (Tables) Sheet http://www.geo-park.com/role/ProvisionsAndOtherLongtermLiabilitiesTables Provisions and other long-term liabilities (Tables) Tables http://www.geo-park.com/role/ProvisionsAndOtherLongtermLiabilities 68 false false R69.htm 169 - Disclosure - Trade and other payables (Tables) Sheet http://www.geo-park.com/role/TradeAndOtherPayablesTables Trade and other payables (Tables) Tables http://www.geo-park.com/role/TradeAndOtherPayables 69 false false R70.htm 170 - Disclosure - Share-based payment (Tables) Sheet http://www.geo-park.com/role/SharebasedPaymentTables Share-based payment (Tables) Tables http://www.geo-park.com/role/SharebasedPayment 70 false false R71.htm 171 - Disclosure - Interests in Joint operations (Tables) Sheet http://www.geo-park.com/role/InterestsInJointOperationsTables Interests in Joint operations (Tables) Tables http://www.geo-park.com/role/InterestsInJointOperations 71 false false R72.htm 172 - Disclosure - Commitments (Tables) Sheet http://www.geo-park.com/role/CommitmentsTables Commitments (Tables) Tables http://www.geo-park.com/role/Commitments 72 false false R73.htm 173 - Disclosure - Related parties (Tables) Sheet http://www.geo-park.com/role/RelatedPartiesTables Related parties (Tables) Tables http://www.geo-park.com/role/RelatedParties 73 false false R74.htm 174 - Disclosure - Fees paid to Auditors (Tables) Sheet http://www.geo-park.com/role/FeesPaidToAuditorsTables Fees paid to Auditors (Tables) Tables http://www.geo-park.com/role/FeesPaidToAuditors 74 false false R75.htm 175 - Disclosure - Impairment test on Property, plant and equipment (Tables) Sheet http://www.geo-park.com/role/ImpairmentTestOnPropertyPlantAndEquipmentTables Impairment test on Property, plant and equipment (Tables) Tables http://www.geo-park.com/role/ImpairmentTestOnPropertyPlantAndEquipment 75 false false R76.htm 176 - Disclosure - Supplemental information on oil and gas activities (Tables) Sheet http://www.geo-park.com/role/SupplementalInformationOnOilAndGasActivitiesTables Supplemental information on oil and gas activities (Tables) Tables http://www.geo-park.com/role/SupplementalInformationOnOilAndGasActivities 76 false false R77.htm 177 - Disclosure - Summary of significant accounting policies (Details Textual) Sheet http://www.geo-park.com/role/SummaryOfSignificantAccountingPoliciesDetailsTextual Summary of significant accounting policies (Details Textual) Details http://www.geo-park.com/role/SummaryOfSignificantAccountingPoliciesPolicies 77 false false R78.htm 178 - Disclosure - Financial Instruments-risk management (Details) Sheet http://www.geo-park.com/role/FinancialInstrumentsriskManagementDetails Financial Instruments-risk management (Details) Details http://www.geo-park.com/role/FinancialInstrumentsriskManagementTables 78 false false R79.htm 179 - Disclosure - Financial Instruments-risk management (Details Textual) Sheet http://www.geo-park.com/role/FinancialInstrumentsriskManagementDetailsTextual Financial Instruments-risk management (Details Textual) Details http://www.geo-park.com/role/FinancialInstrumentsriskManagementTables 79 false false R80.htm 180 - Disclosure - Consolidated Statement of Cash Flow (Details) Sheet http://www.geo-park.com/role/ConsolidatedStatementOfCashFlowDetails Consolidated Statement of Cash Flow (Details) Details http://www.geo-park.com/role/ConsolidatedStatementOfCashFlowTables 80 false false R81.htm 181 - Disclosure - Consolidated Statement of Cash Flow (Details 1) Sheet http://www.geo-park.com/role/ConsolidatedStatementOfCashFlowDetails1 Consolidated Statement of Cash Flow (Details 1) Details http://www.geo-park.com/role/ConsolidatedStatementOfCashFlowTables 81 false false R82.htm 182 - Disclosure - Segment information (Details) Sheet http://www.geo-park.com/role/SegmentInformationDetails Segment information (Details) Details http://www.geo-park.com/role/SegmentInformationTables 82 false false R83.htm 183 - Disclosure - Segment information (Details 1) Sheet http://www.geo-park.com/role/SegmentInformationDetails1 Segment information (Details 1) Details http://www.geo-park.com/role/SegmentInformationTables 83 false false R84.htm 184 - Disclosure - Segment information (Details Textual) Sheet http://www.geo-park.com/role/SegmentInformationDetailsTextual Segment information (Details Textual) Details http://www.geo-park.com/role/SegmentInformationTables 84 false false R85.htm 185 - Disclosure - Revenue (Details) Sheet http://www.geo-park.com/role/RevenueDetails Revenue (Details) Details http://www.geo-park.com/role/RevenueTables 85 false false R86.htm 186 - Disclosure - Commodity risk management contracts (Details) Sheet http://www.geo-park.com/role/CommodityRiskManagementContractsDetails Commodity risk management contracts (Details) Details http://www.geo-park.com/role/CommodityRiskManagementContractsTables 86 false false R87.htm 187 - Disclosure - Commodity risk management contracts (Details 1) Sheet http://www.geo-park.com/role/CommodityRiskManagementContractsDetails1 Commodity risk management contracts (Details 1) Details http://www.geo-park.com/role/CommodityRiskManagementContractsTables 87 false false R88.htm 188 - Disclosure - Production and operating costs (Details) Sheet http://www.geo-park.com/role/ProductionAndOperatingCostsDetails Production and operating costs (Details) Details http://www.geo-park.com/role/ProductionAndOperatingCostsTables 88 false false R89.htm 189 - Disclosure - Depreciation (Details) Sheet http://www.geo-park.com/role/DepreciationDetails Depreciation (Details) Details http://www.geo-park.com/role/DepreciationTables 89 false false R90.htm 190 - Disclosure - Staff costs and Directors Remuneration (Details) Sheet http://www.geo-park.com/role/StaffCostsAndDirectorsRemunerationDetails Staff costs and Directors Remuneration (Details) Details http://www.geo-park.com/role/StaffCostsAndDirectorsRemunerationTables 90 false false R91.htm 191 - Disclosure - Staff costs and Directors Remuneration (Details 1) Sheet http://www.geo-park.com/role/StaffCostsAndDirectorsRemunerationDetails1 Staff costs and Directors Remuneration (Details 1) Details http://www.geo-park.com/role/StaffCostsAndDirectorsRemunerationTables 91 false false R92.htm 192 - Disclosure - Staff costs and Directors Remuneration (Details Textual) Sheet http://www.geo-park.com/role/StaffCostsAndDirectorsRemunerationDetailsTextual Staff costs and Directors Remuneration (Details Textual) Details http://www.geo-park.com/role/StaffCostsAndDirectorsRemunerationTables 92 false false R93.htm 193 - Disclosure - Geological and geophysical expenses (Details) Sheet http://www.geo-park.com/role/GeologicalAndGeophysicalExpensesDetails Geological and geophysical expenses (Details) Details http://www.geo-park.com/role/GeologicalAndGeophysicalExpensesTables 93 false false R94.htm 194 - Disclosure - Administrative expenses (Details) Sheet http://www.geo-park.com/role/AdministrativeExpensesDetails Administrative expenses (Details) Details http://www.geo-park.com/role/AdministrativeExpensesTables 94 false false R95.htm 195 - Disclosure - Selling expenses (Details) Sheet http://www.geo-park.com/role/SellingExpensesDetails Selling expenses (Details) Details http://www.geo-park.com/role/SellingExpensesTables 95 false false R96.htm 196 - Disclosure - Financial results (Details) Sheet http://www.geo-park.com/role/FinancialResultsDetails Financial results (Details) Details http://www.geo-park.com/role/FinancialResultsTables 96 false false R97.htm 197 - Disclosure - Tax reforms (Details Textual) Sheet http://www.geo-park.com/role/TaxReformsDetailsTextual Tax reforms (Details Textual) Details http://www.geo-park.com/role/TaxReforms 97 false false R98.htm 198 - Disclosure - Income tax (Details) Sheet http://www.geo-park.com/role/IncomeTaxDetails Income tax (Details) Details http://www.geo-park.com/role/IncomeTaxTables 98 false false R99.htm 199 - Disclosure - Income tax (Details 1) Sheet http://www.geo-park.com/role/IncomeTaxDetails1 Income tax (Details 1) Details http://www.geo-park.com/role/IncomeTaxTables 99 false false R100.htm 200 - Disclosure - Income tax (Details 2) Sheet http://www.geo-park.com/role/IncomeTaxDetails2 Income tax (Details 2) Details http://www.geo-park.com/role/IncomeTaxTables 100 false false R101.htm 201 - Disclosure - Income tax (Details 3) Sheet http://www.geo-park.com/role/IncomeTaxDetails3 Income tax (Details 3) Details http://www.geo-park.com/role/IncomeTaxTables 101 false false R102.htm 202 - Disclosure - Income tax (Details Textual) Sheet http://www.geo-park.com/role/IncomeTaxDetailsTextual Income tax (Details Textual) Details http://www.geo-park.com/role/IncomeTaxTables 102 false false R103.htm 203 - Disclosure - Deferred income tax (Details) Sheet http://www.geo-park.com/role/DeferredIncomeTaxDetails Deferred income tax (Details) Details http://www.geo-park.com/role/DeferredIncomeTaxTables 103 false false R104.htm 204 - Disclosure - Deferred income tax (Details 1) Sheet http://www.geo-park.com/role/DeferredIncomeTaxDetails1 Deferred income tax (Details 1) Details http://www.geo-park.com/role/DeferredIncomeTaxTables 104 false false R105.htm 205 - Disclosure - Earnings per share (Details) Sheet http://www.geo-park.com/role/EarningsPerShareDetails Earnings per share (Details) Details http://www.geo-park.com/role/EarningsPerShareTables 105 false false R106.htm 206 - Disclosure - Earnings per share (Details Textual) Sheet http://www.geo-park.com/role/EarningsPerShareDetailsTextual Earnings per share (Details Textual) Details http://www.geo-park.com/role/EarningsPerShareTables 106 false false R107.htm 207 - Disclosure - Property, plant and equipment (Details) Sheet http://www.geo-park.com/role/PropertyPlantAndEquipmentDetails Property, plant and equipment (Details) Details http://www.geo-park.com/role/PropertyPlantAndEquipmentTables 107 false false R108.htm 208 - Disclosure - Property, plant and equipment (Details 1) Sheet http://www.geo-park.com/role/PropertyPlantAndEquipmentDetails1 Property, plant and equipment (Details 1) Details http://www.geo-park.com/role/PropertyPlantAndEquipmentTables 108 false false R109.htm 209 - Disclosure - Property, plant and equipment (Details Textual) Sheet http://www.geo-park.com/role/PropertyPlantAndEquipmentDetailsTextual Property, plant and equipment (Details Textual) Details http://www.geo-park.com/role/PropertyPlantAndEquipmentTables 109 false false R110.htm 210 - Disclosure - Subsidiary undertakings (Details) Sheet http://www.geo-park.com/role/SubsidiaryUndertakingsDetails Subsidiary undertakings (Details) Details http://www.geo-park.com/role/SubsidiaryUndertakingsTables 110 false false R111.htm 211 - Disclosure - Subsidiary undertakings (Details Textual) Sheet http://www.geo-park.com/role/SubsidiaryUndertakingsDetailsTextual Subsidiary undertakings (Details Textual) Details http://www.geo-park.com/role/SubsidiaryUndertakingsTables 111 false false R112.htm 212 - Disclosure - Prepaid taxes (Details) Sheet http://www.geo-park.com/role/PrepaidTaxesDetails Prepaid taxes (Details) Details http://www.geo-park.com/role/PrepaidTaxesTables 112 false false R113.htm 213 - Disclosure - Inventories (Details) Sheet http://www.geo-park.com/role/InventoriesDetails Inventories (Details) Details http://www.geo-park.com/role/InventoriesTables 113 false false R114.htm 214 - Disclosure - Trade receivables and Prepayments and other receivables (Details) Sheet http://www.geo-park.com/role/TradeReceivablesAndPrepaymentsAndOtherReceivablesDetails Trade receivables and Prepayments and other receivables (Details) Details http://www.geo-park.com/role/TradeReceivablesAndPrepaymentsAndOtherReceivablesTables 114 false false R115.htm 215 - Disclosure - Trade receivables and Prepayments and other receivables (Details 1) Sheet http://www.geo-park.com/role/TradeReceivablesAndPrepaymentsAndOtherReceivablesDetails1 Trade receivables and Prepayments and other receivables (Details 1) Details http://www.geo-park.com/role/TradeReceivablesAndPrepaymentsAndOtherReceivablesTables 115 false false R116.htm 216 - Disclosure - Trade receivables and Prepayments and other receivables (Details Textual) Sheet http://www.geo-park.com/role/TradeReceivablesAndPrepaymentsAndOtherReceivablesDetailsTextual Trade receivables and Prepayments and other receivables (Details Textual) Details http://www.geo-park.com/role/TradeReceivablesAndPrepaymentsAndOtherReceivablesTables 116 false false R117.htm 217 - Disclosure - Financial instruments by category (Details) Sheet http://www.geo-park.com/role/FinancialInstrumentsByCategoryDetails Financial instruments by category (Details) Details http://www.geo-park.com/role/FinancialInstrumentsByCategoryTables 117 false false R118.htm 218 - Disclosure - Financial instruments by category (Details 1) Sheet http://www.geo-park.com/role/FinancialInstrumentsByCategoryDetails1 Financial instruments by category (Details 1) Details http://www.geo-park.com/role/FinancialInstrumentsByCategoryTables 118 false false R119.htm 219 - Disclosure - Financial instruments by category (Details 2) Sheet http://www.geo-park.com/role/FinancialInstrumentsByCategoryDetails2 Financial instruments by category (Details 2) Details http://www.geo-park.com/role/FinancialInstrumentsByCategoryTables 119 false false R120.htm 220 - Disclosure - Financial instruments by category (Details 3) Sheet http://www.geo-park.com/role/FinancialInstrumentsByCategoryDetails3 Financial instruments by category (Details 3) Details http://www.geo-park.com/role/FinancialInstrumentsByCategoryTables 120 false false R121.htm 221 - Disclosure - Financial instruments by category (Details 4) Sheet http://www.geo-park.com/role/FinancialInstrumentsByCategoryDetails4 Financial instruments by category (Details 4) Details http://www.geo-park.com/role/FinancialInstrumentsByCategoryTables 121 false false R122.htm 222 - Disclosure - Financial instruments by category (Details Textual) Sheet http://www.geo-park.com/role/FinancialInstrumentsByCategoryDetailsTextual Financial instruments by category (Details Textual) Details http://www.geo-park.com/role/FinancialInstrumentsByCategoryTables 122 false false R123.htm 223 - Disclosure - Share capital (Details) Sheet http://www.geo-park.com/role/ShareCapitalDetails Share capital (Details) Details http://www.geo-park.com/role/ShareCapitalTables 123 false false R124.htm 224 - Disclosure - Share capital (Details 1) Sheet http://www.geo-park.com/role/ShareCapitalDetails1 Share capital (Details 1) Details http://www.geo-park.com/role/ShareCapitalTables 124 false false R125.htm 225 - Disclosure - Share capital (Details Textual) Sheet http://www.geo-park.com/role/ShareCapitalDetailsTextual Share capital (Details Textual) Details http://www.geo-park.com/role/ShareCapitalTables 125 false false R126.htm 226 - Disclosure - Borrowings (Details) Sheet http://www.geo-park.com/role/BorrowingsDetails Borrowings (Details) Details http://www.geo-park.com/role/BorrowingsTables 126 false false R127.htm 227 - Disclosure - Borrowings (Details Textual) Sheet http://www.geo-park.com/role/BorrowingsDetailsTextual Borrowings (Details Textual) Details http://www.geo-park.com/role/BorrowingsTables 127 false false R128.htm 228 - Disclosure - Provisions and other long-term liabilities (Details) Sheet http://www.geo-park.com/role/ProvisionsAndOtherLongtermLiabilitiesDetails Provisions and other long-term liabilities (Details) Details http://www.geo-park.com/role/ProvisionsAndOtherLongtermLiabilitiesTables 128 false false R129.htm 229 - Disclosure - Provisions and other long-term liabilities (Details Textual) Sheet http://www.geo-park.com/role/ProvisionsAndOtherLongtermLiabilitiesDetailsTextual Provisions and other long-term liabilities (Details Textual) Details http://www.geo-park.com/role/ProvisionsAndOtherLongtermLiabilitiesTables 129 false false R130.htm 230 - Disclosure - Trade and other payables (Details) Sheet http://www.geo-park.com/role/TradeAndOtherPayablesDetails Trade and other payables (Details) Details http://www.geo-park.com/role/TradeAndOtherPayablesTables 130 false false R131.htm 231 - Disclosure - Trade and other payables (Details Textual) Sheet http://www.geo-park.com/role/TradeAndOtherPayablesDetailsTextual Trade and other payables (Details Textual) Details http://www.geo-park.com/role/TradeAndOtherPayablesTables 131 false false R132.htm 232 - Disclosure - Share-based payment (Details) Sheet http://www.geo-park.com/role/SharebasedPaymentDetails Share-based payment (Details) Details http://www.geo-park.com/role/SharebasedPaymentTables 132 false false R133.htm 233 - Disclosure - Share-based payment (Details Textual) Sheet http://www.geo-park.com/role/SharebasedPaymentDetailsTextual Share-based payment (Details Textual) Details http://www.geo-park.com/role/SharebasedPaymentTables 133 false false R134.htm 234 - Disclosure - Interests in Joint operations (Details) Sheet http://www.geo-park.com/role/InterestsInJointOperationsDetails Interests in Joint operations (Details) Details http://www.geo-park.com/role/InterestsInJointOperationsTables 134 false false R135.htm 235 - Disclosure - Commitments (Details) Sheet http://www.geo-park.com/role/CommitmentsDetails Commitments (Details) Details http://www.geo-park.com/role/CommitmentsTables 135 false false R136.htm 236 - Disclosure - Commitments (Details 1) Sheet http://www.geo-park.com/role/CommitmentsDetails1 Commitments (Details 1) Details http://www.geo-park.com/role/CommitmentsTables 136 false false R137.htm 237 - Disclosure - Commitments (Details Textual) Sheet http://www.geo-park.com/role/CommitmentsDetailsTextual Commitments (Details Textual) Details http://www.geo-park.com/role/CommitmentsTables 137 false false R138.htm 238 - Disclosure - Related parties (Details) Sheet http://www.geo-park.com/role/RelatedPartiesDetails Related parties (Details) Details http://www.geo-park.com/role/RelatedPartiesTables 138 false false R139.htm 239 - Disclosure - Related parties (Details 1) Sheet http://www.geo-park.com/role/RelatedPartiesDetails1 Related parties (Details 1) Details http://www.geo-park.com/role/RelatedPartiesTables 139 false false R140.htm 240 - Disclosure - Related parties (Details Textual) Sheet http://www.geo-park.com/role/RelatedPartiesDetailsTextual Related parties (Details Textual) Details http://www.geo-park.com/role/RelatedPartiesTables 140 false false R141.htm 241 - Disclosure - Fees paid to Auditors (Details) Sheet http://www.geo-park.com/role/FeesPaidToAuditorsDetails Fees paid to Auditors (Details) Details http://www.geo-park.com/role/FeesPaidToAuditorsTables 141 false false R142.htm 242 - Disclosure - Business transactions (Details Textual) Sheet http://www.geo-park.com/role/BusinessTransactionsDetailsTextual Business transactions (Details Textual) Details http://www.geo-park.com/role/BusinessTransactions 142 false false R143.htm 243 - Disclosure - Impairment test on Property, plant and equipment (Details) Sheet http://www.geo-park.com/role/ImpairmentTestOnPropertyPlantAndEquipmentDetails Impairment test on Property, plant and equipment (Details) Details http://www.geo-park.com/role/ImpairmentTestOnPropertyPlantAndEquipmentTables 143 false false R144.htm 244 - Disclosure - Impairment test on Property, plant and equipment (Details Textual) Sheet http://www.geo-park.com/role/ImpairmentTestOnPropertyPlantAndEquipmentDetailsTextual Impairment test on Property, plant and equipment (Details Textual) Details http://www.geo-park.com/role/ImpairmentTestOnPropertyPlantAndEquipmentTables 144 false false R145.htm 245 - Disclosure - Supplemental information on oil and gas activities (Details) Sheet http://www.geo-park.com/role/SupplementalInformationOnOilAndGasActivitiesDetails Supplemental information on oil and gas activities (Details) Details http://www.geo-park.com/role/SupplementalInformationOnOilAndGasActivitiesTables 145 false false R146.htm 246 - Disclosure - Supplemental information on oil and gas activities (Details 1) Sheet http://www.geo-park.com/role/SupplementalInformationOnOilAndGasActivitiesDetails1 Supplemental information on oil and gas activities (Details 1) Details http://www.geo-park.com/role/SupplementalInformationOnOilAndGasActivitiesTables 146 false false R147.htm 247 - Disclosure - Supplemental information on oil and gas activities (Details 2) Sheet http://www.geo-park.com/role/SupplementalInformationOnOilAndGasActivitiesDetails2 Supplemental information on oil and gas activities (Details 2) Details http://www.geo-park.com/role/SupplementalInformationOnOilAndGasActivitiesTables 147 false false R148.htm 248 - Disclosure - Supplemental information on oil and gas activities (Details 3) Sheet http://www.geo-park.com/role/SupplementalInformationOnOilAndGasActivitiesDetails3 Supplemental information on oil and gas activities (Details 3) Details http://www.geo-park.com/role/SupplementalInformationOnOilAndGasActivitiesTables 148 false false R149.htm 249 - Disclosure - Supplemental information on oil and gas activities (Details 4) Sheet http://www.geo-park.com/role/SupplementalInformationOnOilAndGasActivitiesDetails4 Supplemental information on oil and gas activities (Details 4) Details http://www.geo-park.com/role/SupplementalInformationOnOilAndGasActivitiesTables 149 false false R150.htm 250 - Disclosure - Supplemental information on oil and gas activities (Details 5) Sheet http://www.geo-park.com/role/SupplementalInformationOnOilAndGasActivitiesDetails5 Supplemental information on oil and gas activities (Details 5) Details http://www.geo-park.com/role/SupplementalInformationOnOilAndGasActivitiesTables 150 false false R151.htm 251 - Disclosure - Supplemental information on oil and gas activities (Details 6) Sheet http://www.geo-park.com/role/SupplementalInformationOnOilAndGasActivitiesDetails6 Supplemental information on oil and gas activities (Details 6) Details http://www.geo-park.com/role/SupplementalInformationOnOilAndGasActivitiesTables 151 false false R152.htm 252 - Disclosure - Supplemental information on oil and gas activities (Details Textual) Sheet http://www.geo-park.com/role/SupplementalInformationOnOilAndGasActivitiesDetailsTextual Supplemental information on oil and gas activities (Details Textual) Details http://www.geo-park.com/role/SupplementalInformationOnOilAndGasActivitiesTables 152 false false All Reports Book All Reports gprk-20171231.xml gprk-20171231.xsd gprk-20171231_cal.xml gprk-20171231_def.xml gprk-20171231_lab.xml gprk-20171231_pre.xml http://xbrl.ifrs.org/taxonomy/2017-03-09/ifrs-full http://xbrl.sec.gov/dei/2014-01-31 http://fasb.org/us-gaap/2017-01-31 true true