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Derivative Instruments - Notional Amounts, Crude Oil and Natural Gas (Details) bbl in Thousands, Mcf in Thousands | 12 Months Ended
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Sep. 30, 2021 $ / MMBbls $ / MMBTU Mcf bbl
Oil Swap, Q4 2021 |
Derivative [Line Items] |
Notional Volume | bbl | 558,116
Weighted average price (in usd per bbl/mcf) | 51.65
Oil Swap, Q1 2022 |
Derivative [Line Items] |
Notional Volume | bbl | 405,000
Weighted average price (in usd per bbl/mcf) | 55.66
Oil Swap, Q2 2022 |
Derivative [Line Items] |
Notional Volume | bbl | 405,000
Weighted average price (in usd per bbl/mcf) | 55.66
Oil Swap, Q3 2022 |
Derivative [Line Items] |
Notional Volume | bbl | 330,000
Weighted average price (in usd per bbl/mcf) | 54.07
Oil Swap, Q4 2022 |
Derivative [Line Items] |
Notional Volume | bbl | 330,000
Weighted average price (in usd per bbl/mcf) | 54.07
Oil Swap, 2023 |
Derivative [Line Items] |
Notional Volume | bbl | 360,000
Weighted average price (in usd per bbl/mcf) | 59.01
Natural Gas Swaps, Q4 2021 |
Derivative [Line Items] |
Notional Volume | Mcf | 555,000
Weighted average price (in usd per bbl/mcf) | $ / MMBTU | 3.03
Natural Gas Swaps, Q1 2022 |
Derivative [Line Items] |
Notional Volume | Mcf | 540,000
Weighted average price (in usd per bbl/mcf) | $ / MMBTU | 3.26
Natural Gas Swaps, Q2 2022 |
Derivative [Line Items] |
Notional Volume | Mcf | 540,000
Weighted average price (in usd per bbl/mcf) | $ / MMBTU | 3.26
Natural Gas Swaps, Q3 2022 |
Derivative [Line Items] |
Notional Volume | Mcf | 540,000
Weighted average price (in usd per bbl/mcf) | $ / MMBTU | 3.26
Natural Gas Swaps, Q4 2022 |
Derivative [Line Items] |
Notional Volume | Mcf | 540,000
Weighted average price (in usd per bbl/mcf) | $ / MMBTU | 3.26
Oil Collars, Q1 2022 |
Derivative [Line Items] |
Notional Volume | bbl | 90,000
Oil Collars, Q1 2022 | Short |
Derivative [Line Items] |
Weighted average price (in usd per bbl/mcf) | 35.00
Oil Collars, Q1 2022 | Long |
Derivative [Line Items] |
Weighted average price (in usd per bbl/mcf) | 42.63
Oil Collars, Q2 2022 |
Derivative [Line Items] |
Notional Volume | bbl | 90,000
Oil Collars, Q2 2022 | Short |
Derivative [Line Items] |
Weighted average price (in usd per bbl/mcf) | 35.00
Oil Collars, Q2 2022 | Long |
Derivative [Line Items] |
Weighted average price (in usd per bbl/mcf) | 42.63
Oil Collars, Q3 2022 |
Derivative [Line Items] |
Notional Volume | bbl | 90,000
Oil Collars, Q3 2022 | Short |
Derivative [Line Items] |
Weighted average price (in usd per bbl/mcf) | 35.00
Oil Collars, Q3 2022 | Long |
Derivative [Line Items] |
Weighted average price (in usd per bbl/mcf) | 42.63
Oil Collars, Q4 2022 |
Derivative [Line Items] |
Notional Volume | bbl | 90,000
Oil Collars, Q4 2022 | Short |
Derivative [Line Items] |
Weighted average price (in usd per bbl/mcf) | 35.00
Oil Collars, Q4 2022 | Long |
Derivative [Line Items] |
Weighted average price (in usd per bbl/mcf) | 42.63
Oil Basis, Q4 2021 |
Derivative [Line Items] |
Notional Volume | bbl | 435,000
Weighted average price (in usd per bbl/mcf) | 0.40
Oil Basis, Q1 2022 |
Derivative [Line Items] |
Notional Volume | bbl | 180,000
Weighted average price (in usd per bbl/mcf) | 0.40
Oil Basis, Q2 2022 |
Derivative [Line Items] |
Notional Volume | bbl | 180,000
Weighted average price (in usd per bbl/mcf) | 0.40
Oil Basis, Q3 2022 |
Derivative [Line Items] |
Notional Volume | bbl | 180,000
Weighted average price (in usd per bbl/mcf) | 0.40
Oil Basis, Q4 2022 |
Derivative [Line Items] |
Notional Volume | bbl | 180,000
Weighted average price (in usd per bbl/mcf) | 0.40

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