XML 97 R88.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Commitments - Schedule of Firm Transportation Contracts (Details) - Transportation commitment MMBTU in Thousands, $ in Thousands | Dec. 31, 2019 USD ($) MMBTU
--- | ---
Transportation Volume [Abstract] |
2020 (MMBtu) | MMBTU | 505,080
2021 (MMBtu) | MMBTU | 531,075
2022 (MMBtu) | MMBTU | 531,075
2023 (MMBtu) | MMBTU | 515,867
2024 (MMBtu) | MMBTU | 489,525
Thereafter (MMBtu) | MMBTU | 3,778,217
Total (MMBtu) | MMBTU | 6,350,839
Transportation [Abstract] |
2020 | $ | $ 274,813
2021 | $ | 286,626
2022 | $ | 286,626
2023 | $ | 282,945
2024 | $ | 265,568
Thereafter | $ | 2,163,926
Total | $ | $ 3,560,504

X
- Definition Other Commitment, Due after Fifth Year, Volume + References No definition available. + Details
Name: | gpor_OtherCommitmentDueafterFifthYearVolume
Namespace Prefix: | gpor_
Data Type: | num:energyItemType
Balance Type: | na
Period Type: | instant

X
- Definition Other Commitment, Due in Fifth Year, Volume + References No definition available. + Details
Name: | gpor_OtherCommitmentDueinFifthYearVolume
Namespace Prefix: | gpor_
Data Type: | num:energyItemType
Balance Type: | na
Period Type: | instant

X
- Definition Other Commitment, Due in Fourth Year, Volume + References No definition available. + Details
Name: | gpor_OtherCommitmentDueinFourthYearVolume
Namespace Prefix: | gpor_
Data Type: | num:energyItemType
Balance Type: | na
Period Type: | instant

X
- Definition Other Commitment, Due in Next Twelve Months, Volume + References No definition available. + Details
Name: | gpor_OtherCommitmentDueinNextTwelveMonthsVolume
Namespace Prefix: | gpor_
Data Type: | num:energyItemType
Balance Type: | na
Period Type: | instant

X
- Definition Other Commitment, Due in Second Year, Volume + References No definition available. + Details
Name: | gpor_OtherCommitmentDueinSecondYearVolume
Namespace Prefix: | gpor_
Data Type: | num:energyItemType
Balance Type: | na
Period Type: | instant

X
- Definition Other Commitment, Due in Third Year, Volume + References No definition available. + Details
Name: | gpor_OtherCommitmentDueinThirdYearVolume
Namespace Prefix: | gpor_
Data Type: | num:energyItemType
Balance Type: | na
Period Type: | instant

X
- Definition Other Commitment, Volume + References No definition available. + Details
Name: | gpor_OtherCommitmentVolume
Namespace Prefix: | gpor_
Data Type: | num:energyItemType
Balance Type: | na
Period Type: | instant

X
- Definition Transportation [Abstract] + References No definition available. + Details
Name: | gpor_TransportationAbstract
Namespace Prefix: | gpor_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Transportation Volume [Abstract] + References No definition available. + Details
Name: | gpor_TransportationVolumeAbstract
Namespace Prefix: | gpor_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. + References No definition available. + Details
Name: | us-gaap_OtherCommitment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Minimum amount of other commitment maturing after the fifth fiscal year following the latest fiscal year for commitments not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in this taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. + References No definition available. + Details
Name: | us-gaap_OtherCommitmentDueAfterFifthYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Minimum amount of other commitment maturing in the fifth fiscal year following the latest fiscal year for commitments not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in this taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. + References No definition available. + Details
Name: | us-gaap_OtherCommitmentDueInFifthYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Minimum amount of other commitment maturing in the fourth fiscal year following the latest fiscal year for commitments not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in this taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. + References No definition available. + Details
Name: | us-gaap_OtherCommitmentDueInFourthYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Minimum amount of other commitment maturing in the next fiscal year following the latest fiscal year for commitments not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in this taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. + References No definition available. + Details
Name: | us-gaap_OtherCommitmentDueInNextTwelveMonths
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Minimum amount of other commitment maturing in the second fiscal year following the latest fiscal year for commitments not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in this taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. + References No definition available. + Details
Name: | us-gaap_OtherCommitmentDueInSecondYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Minimum amount of other commitment maturing in the third fiscal year following the latest fiscal year for commitments not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in this taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. + References No definition available. + Details
Name: | us-gaap_OtherCommitmentDueInThirdYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_OtherCommitmentsAxis=gpor_TransportationCommitmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |