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v3.22.4

DERIVATIVE INSTRUMENTS - Narrative (Details) | 12 Months Ended
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Dec. 31, 2022
Minimum |
Derivative [Line Items] |
Percentage of forecasted annual production | 50.00%
Term of contract | 12 months
Maximum |
Derivative [Line Items] |
Percentage of forecasted annual production | 75.00%
Term of contract | 24 months

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- Definition Derivative, Percentage Of Forecasted Annual Production + References No definition available. + Details
Name: | gpor_DerivativePercentageOfForecastedAnnualProduction
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 No definition available. + Details
Name: | us-gaap_DerivativeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_DerivativeTermOfContract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |