XML 72 R61.htm IDEA: XBRL DOCUMENT
v3.23.2

DERIVATIVE INSTRUMENTS - Schedule of Loss on Derivative Instruments (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Derivative [Line Items] |  |  |  |
Total gains (losses) on natural gas derivatives | $ 96,788 | $ (172,871) | $ 474,849 | $ (961,422)
Natural Gas |  |  |  |
Derivative [Line Items] |  |  |  |
Natural gas derivatives - fair value gains (losses) | 37,792 | 121,659 | 411,940 | (497,660)
Natural gas derivatives - settlement gains (losses) | 49,444 | (288,936) | 49,271 | (400,093)
Total gains (losses) on natural gas derivatives | 87,236 | (167,277) | 461,211 | (897,753)
Oil |  |  |  |
Derivative [Line Items] |  |  |  |
Natural gas derivatives - fair value gains (losses) | 2,258 | 4,383 | 6,990 | (25,470)
Natural gas derivatives - settlement gains (losses) | 369 | (14,281) | (74) | (22,425)
Total gains (losses) on natural gas derivatives | 2,627 | (9,898) | 6,916 | (47,895)
Natural Gas Liquids |  |  |  |
Derivative [Line Items] |  |  |  |
Natural gas derivatives - fair value gains (losses) | 4,218 | 9,506 | 3,033 | (4,827)
Natural gas derivatives - settlement gains (losses) | 2,707 | (5,202) | 3,689 | (10,947)
Total gains (losses) on natural gas derivatives | $ 6,925 | $ 4,304 | $ 6,722 | $ (15,774)

X
- Definition Gain (Loss) On Derivative Instruments, Fair Value, Net + References No definition available. + Details
Name: | gpor_GainLossOnDerivativeInstrumentsFairValueNet
Namespace Prefix: | gpor_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Gain (Loss) On Derivative Instruments, Settlements, Net + References No definition available. + Details
Name: | gpor_GainLossOnDerivativeInstrumentsSettlementsNet
Namespace Prefix: | gpor_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Definition Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4A + Details
Name: | us-gaap_GainLossOnDerivativeInstrumentsNetPretax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | srt_EnergyAxis=srt_NaturalGasReservesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_EnergyAxis=srt_OilReservesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_EnergyAxis=srt_NaturalGasLiquidsReservesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |