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DERIVATIVE INSTRUMENTS - Narrative (Details) | 9 Months Ended
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Sep. 30, 2023
Minimum |
Derivative [Line Items] |
Derivative, percentage of forecasted annual production (in percent) | 30.00%
Derivative, term of contract | 12 months
Maximum |
Derivative [Line Items] |
Derivative, percentage of forecasted annual production (in percent) | 70.00%
Derivative, term of contract | 36 months

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- Definition Derivative, Percentage Of Forecasted Annual Production + References No definition available. + Details
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Namespace Prefix: | gpor_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480237/815-40-50-5 + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration

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- Definition Period the derivative contract is outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- Details
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- Details
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