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Derivative Financial Instruments (Schedule of Notional Amounts and Estimated Fair Values of Commodity Derivative Positions) (Detail) bbl in Thousands, MMBTU in Thousands, $ in Thousands | Dec. 31, 2024 USD ($) bbl MMBTU | Dec. 31, 2023 USD ($) MMBTU bbl
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Financial Institution Counterparties [Member] | Oil Commodity Derivative [Member] |  |
Derivative Instruments [Line Items] |  |
Oil/Natural Gas Derivative Assets Notional Amount | bbl | 7,097 | 5,601
Oil/Natural Gas Derivative Assets, Estimated Fair Value | $ 27,471 | $ 37,667
Oil/Natural Gas Derivative Liabilities Notional Amount | bbl | 4,768 | 4,581
Oil/Natural Gas Derivative Liabilities, Estimated Fair Value | $ (12,897) | $ (18,500)
Financial Institution Counterparties [Member] | Natural Gas Commodity Derivative [Member] |  |
Derivative Instruments [Line Items] |  |
Oil/Natural Gas Derivative Assets Notional Amount | MMBTU | 25,454 | 17,363
Oil/Natural Gas Derivative Assets, Estimated Fair Value | $ 3,804 | $ 11,822
Oil/Natural Gas Derivative Liabilities Notional Amount | MMBTU | 26,082 | 6,462
Oil/Natural Gas Derivative Liabilities, Estimated Fair Value | $ (4,054) | $ (2,499)
Customer Counterparties [Member] | Oil Commodity Derivative [Member] |  |
Derivative Instruments [Line Items] |  |
Oil/Natural Gas Derivative Assets Notional Amount | bbl | 4,872 | 4,618
Oil/Natural Gas Derivative Assets, Estimated Fair Value | $ 12,973 | $ 18,722
Oil/Natural Gas Derivative Liabilities Notional Amount | bbl | 6,993 | 5,564
Oil/Natural Gas Derivative Liabilities, Estimated Fair Value | $ (26,753) | $ (36,877)
Customer Counterparties [Member] | Natural Gas Commodity Derivative [Member] |  |
Derivative Instruments [Line Items] |  |
Oil/Natural Gas Derivative Assets Notional Amount | MMBTU | 26,767 | 6,462
Oil/Natural Gas Derivative Assets, Estimated Fair Value | $ 4,255 | $ 2,499
Oil/Natural Gas Derivative Liabilities Notional Amount | MMBTU | 24,769 | 17,363
Oil/Natural Gas Derivative Liabilities, Estimated Fair Value | $ (3,600) | $ (11,571)

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