XML 34 R22.htm IDEA: XBRL DOCUMENT
v3.21.2

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Derivative Contracts Volume and Prices (Detail) | 9 Months Ended
--- | ---
Sep. 30, 2021 MMBTU $ / bbl $ / MMBTU bbl
Natural Gas Swap Contracts: |
Derivative [Line Items] |
Volume (in MMBTU) | MMBTU | 129,020,000
Average price (in dollars per MMBtu) | 2.66
Natural Gas Swap Contracts: | Swap Contracts For Remainder Of Fiscal Year |
Derivative [Line Items] |
Volume (in MMBTU) | MMBTU | 51,520,000
Average price (in dollars per MMBtu) | 2.53
Natural Gas Swap Contracts: | Swap Contracts for 2022 |
Derivative [Line Items] |
Volume (in MMBTU) | MMBTU | 77,500,000
Average price (in dollars per MMBtu) | 2.76
Natural Gas Swap Contracts: | Swaption Swap Contracts 2021 |
Derivative [Line Items] |
Volume (in MMBTU) | MMBTU | 11,040,000
Average price (in dollars per MMBtu) | 2.51
Natural Gas Swap Contracts: | Swap Contracts for 2023 |
Derivative [Line Items] |
Volume (in MMBTU) | MMBTU | 0
Average price (in dollars per MMBtu) | 0
Natural Gas Collar Contracts: |
Derivative [Line Items] |
Volume (in MMBTU) | MMBTU | 185,085,000
Average ceiling (dollars per unit) | 3.74
Average floor (dollars per unit) | 2.60
Natural Gas Collar Contracts: | Collar Contract For Remainder Of Fiscal Year |
Derivative [Line Items] |
Volume (in MMBTU) | MMBTU | 37,410,000
Average ceiling (dollars per unit) | 3.05
Average floor (dollars per unit) | 2.48
Natural Gas Collar Contracts: | Collar Contracts for 2022 |
Derivative [Line Items] |
Volume (in MMBTU) | MMBTU | 140,925,000
Average ceiling (dollars per unit) | 3.91
Average floor (dollars per unit) | 2.62
Natural Gas Collar Contracts: | Collar Contracts for 2023 |
Derivative [Line Items] |
Volume (in MMBTU) | MMBTU | 6,750,000
Average ceiling (dollars per unit) | 4.03
Average floor (dollars per unit) | 2.67
Natural Gas Swaptions Contracts: |
Derivative [Line Items] |
Volume (in MMBTU) | MMBTU | 43,800,000
Average price (in dollars per MMBtu) | 2.51
Natural Gas Swaptions Contracts: | Swap Contracts for 2022 |
Derivative [Line Items] |
Volume (in MMBTU) | MMBTU | 43,800,000
Average price (in dollars per MMBtu) | 2.51
Natural Gas Swaptions Contracts: | Swaption Contracts 2022 |
Derivative [Line Items] |
Volume (in MMBTU) | MMBTU | 43,800,000
Average price (in dollars per MMBtu) | 2.51
Natural Gas Swaptions Contracts: | Swaption Contracts October 2021 |
Derivative [Line Items] |
Volume (in MMBTU) | MMBTU | 36,500,000
Average price (in dollars per MMBtu) | 2.52
Natural Gas Swaptions Contracts: | Swaption Contracts November 2021 |
Derivative [Line Items] |
Volume (in MMBTU) | MMBTU | 7,300,000
Average price (in dollars per MMBtu) | 2.50
Natural Gas Swaptions Contracts: | Swap Contracts for 2023 |
Derivative [Line Items] |
Volume (in MMBTU) | MMBTU | 0
Average price (in dollars per MMBtu) | 0
Natural Gas Basis Swap Contracts: |
Derivative [Line Items] |
Volume (in MMBTU) | MMBTU | 14,630,000
Average price (in dollars per MMBtu) | (0.15)
Natural Gas Basis Swap Contracts: | Swap Contracts For Remainder Of Fiscal Year |
Derivative [Line Items] |
Volume (in MMBTU) | MMBTU | 3,680,000
Average price (in dollars per MMBtu) | (0.12)
Natural Gas Basis Swap Contracts: | Swap Contracts for 2022 |
Derivative [Line Items] |
Volume (in MMBTU) | MMBTU | 10,950,000
Average price (in dollars per MMBtu) | (0.16)
Crude Oil Collar Contracts: |
Derivative [Line Items] |
Volume (in Barrels) | bbl | 138,000
Average ceiling (dollars per unit) | $ / bbl | 51.67
Average floor (dollars per unit) | $ / bbl | 41.67
Crude Oil Collar Contracts: | Collar Contract For Remainder Of Fiscal Year |
Derivative [Line Items] |
Volume (in Barrels) | bbl | 138,000
Average ceiling (dollars per unit) | $ / bbl | 51.67
Average floor (dollars per unit) | $ / bbl | 41.67

X
- Definition The average cap rate on a group of price risk derivatives such as caps or collars. A payment or receipt is triggered if the market rate exceeds the cap rate on the contract. + References No definition available. + Details
Name: | us-gaap_DerivativeAverageCapPrice
Namespace Prefix: | us-gaap_
Data Type: | srt-types:perUnitItemType
Balance Type: | na
Period Type: | instant

X
- Definition The average floor rate on a group of price risk derivatives such as floors or collars. A payment or receipt is triggered if the market rate falls below the floor rate on the contract. + References No definition available. + Details
Name: | us-gaap_DerivativeAverageFloorPrice
Namespace Prefix: | us-gaap_
Data Type: | srt-types:perUnitItemType
Balance Type: | na
Period Type: | instant

X
- Definition The average forward price on the group of price risk forward or futures contracts, such as gas futures contracts. + References No definition available. + Details
Name: | us-gaap_DerivativeAverageForwardPrice
Namespace Prefix: | us-gaap_
Data Type: | srt-types:perUnitItemType
Balance Type: | na
Period Type: | instant

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 No definition available. + Details
Name: | us-gaap_DerivativeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Nominal energy measure used to calculate payments on a derivative instrument. + References No definition available. + Details
Name: | us-gaap_DerivativeNonmonetaryNotionalAmountEnergyMeasure
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:energyItemType
Balance Type: | na
Period Type: | duration

X
- Definition Nominal volume used to calculate payments on a derivative instrument. + References No definition available. + Details
Name: | us-gaap_DerivativeNonmonetaryNotionalAmountVolume
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:volumeItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=crk_NaturalGasContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TradingActivityByTypeAxis=crk_SwapContractsForRemainderOfFiscalYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TradingActivityByTypeAxis=crk_SwapContractsForYearTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TradingActivityByTypeAxis=crk_SwaptionSwapContractsTwentyTwentyOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TradingActivityByTypeAxis=crk_SwapContractsForYearThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=crk_NaturalGasContractTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TradingActivityByTypeAxis=crk_CollarContractForRemainderOfFiscalYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TradingActivityByTypeAxis=crk_CollarContractsForYearTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TradingActivityByTypeAxis=crk_CollarContractsForYearThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=crk_NaturalGasSwaptionsCallContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TradingActivityByTypeAxis=crk_SwaptionContractsTwoThousandTwentyTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TradingActivityByTypeAxis=crk_SwaptionContractsOctoberTwoThousandTwentyOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TradingActivityByTypeAxis=crk_SwaptionContractsNovemberTwoThousandTwentyOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=crk_BasisSwapContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=crk_CrudeOilContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |