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Trade receivables (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020
Disclosure of financial assets [line items] |  |
Trade receivables | $ 70,531 | $ 46,918
Trade receivables [member] |  |
Disclosure of financial assets [line items] |  |
Credit period for trade receivables | 30 days |
Later than three months [member] | Trade receivables [member] |  |
Disclosure of financial assets [line items] |  |
Trade receivables | $ 0 | 0
Later than one month and not later than two months [member] | Trade receivables [member] |  |
Disclosure of financial assets [line items] |  |
Trade receivables | $ 0 | $ 0

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- Definition The credit period for trade receivables. + References No definition available. + Details
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Namespace Prefix: | gprk_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount due from customers for goods and services sold. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 78 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_78_b&doctype=Standard -URIDate 2021-03-24 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |