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Derivative Instruments - Summary of Outstanding Financial Commodity Derivatives (Details) - Natural gas (NYMEX) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Feb. 26, 2021 MMBTU $ / MMBTU | Dec. 31, 2020 MMBTU $ / MMBTU
Derivative [Line Items] |  |
Volume (Mmbtu) | MMBTU |  | 18,250,000
Swaps, Weighted Average Price (in dollars per Mmbtu) |  | 2.74
Volume (Mmbtu) | MMBTU |  | 164,250,000
Collars, Weighted-Average Floor Price (in dollars per Mmbtu) |  | 2.68
Collars, Weighted- Average Ceiling Price (in dollars per Mmbtu) |  | 3.09
Volume (Mmbtu) | MMBTU |  | 10,700,000
Collars, Floor Price (in dollars per Mmbtu) |  | 0
Collars, Weighted-Average Floor Price (in dollars per Mmbtu) |  | 2.50
Collars, Ceiling Price (in dollars per Mmbtu) |  | 0
Collars, Weighted- Average Ceiling Price (in dollars per Mmbtu) |  | 2.80
Volume (Mmbtu) | MMBTU |  | 10,700,000
Swaps, Weighted Average Price (in dollars per Mmbtu) |  | 2.75
Subsequent Event |  |
Derivative [Line Items] |  |
Volume (Mmbtu) | MMBTU | 10,700,000 |
Swaps, Weighted Average Price (in dollars per Mmbtu) | 2.81 |
Minimum |  |
Derivative [Line Items] |  |
Collars, Floor Price (in dollars per Mmbtu) |  | 2.50
Minimum |  |
Derivative [Line Items] |  |
Collars, Ceiling Price (in dollars per Mmbtu) |  | 2.83
Maximum |  |
Derivative [Line Items] |  |
Collars, Floor Price (in dollars per Mmbtu) |  | 2.85
Maximum |  |
Derivative [Line Items] |  |
Collars, Ceiling Price (in dollars per Mmbtu) |  | 3.94

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- 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
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- 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
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