The amount of additional provisions made for environmental and tax contingencies.

No definition available.

Name:	gprk_AdditionalProvisionsEnvironmentalAndTaxContingencies
Namespace Prefix:	gprk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

No definition available.

Name:	gprk_DisclosureOfSegmentInformationLineItems
Namespace Prefix:	gprk_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The amount of loss incurred from payment to joint operation partner in connection with working interest transfer.

No definition available.

Name:	gprk_LossFromPaymentToJointOperationPartnerWorkingInterestTransfer
Namespace Prefix:	gprk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Percentage of non-operated working interest agreed to transfer.

No definition available.

Name:	gprk_NonOperatedWorkingInterestAgreedToTransferPercentage
Namespace Prefix:	gprk_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

The amount of termination and other costs incurred because of the divestment process, including a provision for investment commitments

No definition available.

Name:	gprk_ProvisionForInvestmentCommitments
Namespace Prefix:	gprk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The amount of termination costs related to cost efficiency measured during the period.

No definition available.

Name:	gprk_TerminationCostsRelatedToCostEfficiencyMeasures
Namespace Prefix:	gprk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Represents the working interest percentage transferred by the entity in a property.

No definition available.

Name:	gprk_WorkingInterestPercentageInPropertyTransferred
Namespace Prefix:	gprk_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

Name:	ifrs-full_ContinuingAndDiscontinuedOperationsAxis=gprk_LosParlamentosBlockArgentinaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_TypesOfInvestmentPropertyAxis=gprk_EspejoAndPericoBlocksMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_JointOperationsAxis=gprk_ManatiFieldBrazilMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_GeographicalAreasAxis=country_CL
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	ifrs-full_GeographicalAreasAxis=country_BR
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Segment information (Narrative) (Details) - USD ($)			1 Months Ended	12 Months Ended
Segment information (Narrative) (Details) - USD ($)	Mar. 27, 2025	Oct. 27, 2023	Dec. 31, 2025	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Disclosure of Segment information [Line Items]
Termination costs				$ 7,685,000
Los Parlamentos Block (Argentina)
Disclosure of Segment information [Line Items]
Working interest transfer		$ 7,023,000				$ 7,023,000
Espejo and Perico Blocks
Disclosure of Segment information [Line Items]
Working interest percentage transferred			50.00%	50.00%
Manati Field (Brazil) [Member]
Disclosure of Segment information [Line Items]
Percentage of non-operated working interest	10.00%		10.00%
Chile [Member]
Disclosure of Segment information [Line Items]
Provision for investment commitments						$ 9,742,000
Brazil [Member]
Disclosure of Segment information [Line Items]
Additional provisions for environmental and tax contingencies					$ 2,742,000