XML 44 R36.htm IDEA: XBRL DOCUMENT
v3.20.1

Derivative Financial Instruments (Details) $ in Thousands | Apr. 29, 2020 bbl $ / bbl | Mar. 31, 2020 USD ($) bbl $ / bbl
--- | --- | ---
Open costless collar contracts |  |
Summary of contracts for oil and natural gas |  |
Fair Value of Asset (Liability) | $ |  | $ 95,553
Open Swap Contracts |  |
Summary of contracts for oil and natural gas |  |
Fair Value of Asset (Liability) | $ |  | $ 36,997
Derivative Contract, Calculation Period One | Open costless collar contracts | Oil - WTI |  |
Summary of contracts for oil and natural gas |  |
Notional Quantity (Bbl or MMBtu) | bbl |  | 5,205,000
Weighted Average Price Floor ($/Bbl or $/MMBtu) |  | 47.68
Weighted Average Price Ceiling ($/Bbl or $/MMBtu) |  | 66.69
Fair Value of Asset (Liability) | $ |  | $ 95,553
Derivative Contract, Calculation Period One | Open Swap Contracts | Oil Basis Swaps |  |
Summary of contracts for oil and natural gas |  |
Notional Quantity (Bbl or MMBtu) | bbl |  | 7,335,000
Fair Value of Asset (Liability) | $ |  | $ 23,318
Derivative, Swap Type, Average Fixed Price |  | 0.61
Derivative Contract, Calculation Period Two | Open Swap Contracts | Oil Basis Swaps |  |
Summary of contracts for oil and natural gas |  |
Notional Quantity (Bbl or MMBtu) | bbl |  | 8,400,000
Fair Value of Asset (Liability) | $ |  | $ 8,552
Derivative, Swap Type, Average Fixed Price |  | 0.87
Derivative Contract, Calculation Period Three | Open Swap Contracts | Oil Basis Swaps |  |
Summary of contracts for oil and natural gas |  |
Notional Quantity (Bbl or MMBtu) | bbl |  | 5,520,000
Fair Value of Asset (Liability) | $ |  | $ 5,127
Derivative, Swap Type, Average Fixed Price |  | 0.95
Subsequent Event | Open Put Contracts | Oil |  |
Summary of contracts for oil and natural gas |  |
Notional Quantity (Bbl or MMBtu) | bbl | 391,500 |
Derivative, Swap Type, Average Fixed Price | 48.15 |
Subsequent Event | Derivative Contract, Calculation Period One | Open costless collar contracts | Oil |  |
Summary of contracts for oil and natural gas |  |
Notional Quantity (Bbl or MMBtu) | bbl | 2,311,500 |
Weighted Average Price Floor ($/Bbl or $/MMBtu) | 47.94 |
Weighted Average Price Ceiling ($/Bbl or $/MMBtu) | 66.19 |
Subsequent Event | Derivative Contract, Calculation Period One | Open Swap Contracts | Oil |  |
Summary of contracts for oil and natural gas |  |
Notional Quantity (Bbl or MMBtu) | bbl | 7,620,000 |
Derivative, Swap Type, Average Fixed Price | 34.93 |
Subsequent Event | Derivative Contract, Calculation Period Two | Open costless collar contracts | Natural Gas |  |
Summary of contracts for oil and natural gas |  |
Notional Quantity (Bbl or MMBtu) | bbl | 3,200,000 |
Weighted Average Price Floor ($/Bbl or $/MMBtu) | 2.52 |
Weighted Average Price Ceiling ($/Bbl or $/MMBtu) | 3.71 |
Subsequent Event | Derivative Contract, Calculation Period Three | Open costless collar contracts | Natural Gas |  |
Summary of contracts for oil and natural gas |  |
Notional Quantity (Bbl or MMBtu) | bbl | 4,800,000 |
Weighted Average Price Floor ($/Bbl or $/MMBtu) | 2.52 |
Weighted Average Price Ceiling ($/Bbl or $/MMBtu) | 3.71 |
Subsequent Event | Derivative Contract, Calculation Period Four | Open Swap Contracts | Oil |  |
Summary of contracts for oil and natural gas |  |
Notional Quantity (Bbl or MMBtu) | bbl | 2,040,000 |
Derivative, Swap Type, Average Fixed Price | 35.26 |

X
- Definition Open costless collar contracts for oil and natural gas. + References No definition available. + Details
Name: | mtdr_OpenCostlessCollarContractsForOilAndNaturalGasAbstract
Namespace Prefix: | mtdr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=117331979&loc=d3e41228-113958 + Details
Name: | us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The cap rate on a price risk derivative such as a cap or collar. 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_DerivativeCapPrice
Namespace Prefix: | us-gaap_
Data Type: | srt-types:perUnitItemType
Balance Type: | na
Period Type: | instant

X
- Definition Floor rate on a price risk derivative such as a floor or a collar. 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_DerivativeFloorPrice
Namespace Prefix: | us-gaap_
Data Type: | srt-types:perUnitItemType
Balance Type: | na
Period Type: | instant

X
- Definition Nominal number of units used to calculate payment on derivative. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959 + Details
Name: | us-gaap_DerivativeNonmonetaryNotionalAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Average fixed price related to the group of price risk swap derivatives. + References No definition available. + Details
Name: | us-gaap_DerivativeSwapTypeAverageFixedPrice
Namespace Prefix: | us-gaap_
Data Type: | srt-types:perUnitItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_OpenOptionContractsWrittenTypeAxis=mtdr_OpenCostlessCollarContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_OpenOptionContractsWrittenTypeAxis=mtdr_OpenSwapContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | mtdr_DerivativeContractPeriodAxis=mtdr_DerivativeContractCalculationPeriodOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ReserveQuantitiesByTypeOfReserveAxis=mtdr_OilWTIMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ReserveQuantitiesByTypeOfReserveAxis=mtdr_OilBasisSwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | mtdr_DerivativeContractPeriodAxis=mtdr_DerivativeContractCalculationPeriodTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | mtdr_DerivativeContractPeriodAxis=mtdr_DerivativeContractCalculationPeriodThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_OpenOptionContractsWrittenTypeAxis=us-gaap_PutOptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

X
- Details
Name: | mtdr_DerivativeContractPeriodAxis=mtdr_DerivativeContractCalculationPeriodFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |