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Derivative Instruments - The Effect of Derivative Instruments on the Consolidated Statement of Income (Details) - USD ($) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023 | Dec. 31, 2022
Derivative [Line Items] |  |  |  |
Realized Gain (Loss) on Commodity Derivative Instruments: | $ 54,653 | $ (61,032) |  |
Unrealized Gain (Loss) on Commodity Derivative Instruments: | (47,125) | 823,199 |  |
Gain on Commodity Derivative Instruments: | 7,528 | 762,167 |  |
Commodity Derivatives |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative asset | 30,170 | 1,311 | $ 6,741 | $ 77,662
Derivatives settled not paid | 270 |  | $ 900 |
Interest Rate Swaps |  |  |  |
Derivative [Line Items] |  |  |  |
Gain on Commodity Derivative Instruments: | 4 | (161) |  |
Cash Received in Settlement of Interest Rate Swaps | 1,215 | 799 |  |
Unrealized Loss on Interest Rate Swaps | (1,211) | (960) |  |
Natural Gas | Commodity Swap |  |  |  |
Derivative [Line Items] |  |  |  |
Realized Gain (Loss) on Commodity Derivative Instruments: | 60,309 | (49,926) |  |
Unrealized Gain (Loss) on Commodity Derivative Instruments: | 50,513 | 980,836 |  |
Gain on Commodity Derivative Instruments: | 110,822 | 930,910 |  |
Natural Gas | Natural Gas Basis Swaps |  |  |  |
Derivative [Line Items] |  |  |  |
Realized Gain (Loss) on Commodity Derivative Instruments: | (5,720) | (11,106) |  |
Unrealized Gain (Loss) on Commodity Derivative Instruments: | (95,921) | (158,235) |  |
Gain on Commodity Derivative Instruments: | (101,641) | (169,341) |  |
Natural Gas Liquids | Commodity Swap |  |  |  |
Derivative [Line Items] |  |  |  |
Realized Gain (Loss) on Commodity Derivative Instruments: | 64 | 0 |  |
Unrealized Gain (Loss) on Commodity Derivative Instruments: | (1,717) | 598 |  |
Gain on Commodity Derivative Instruments: | $ (1,653) | $ 598 |  |

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- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. 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