Derivatives (Current and Noncurrent Derivative Assets) (Details) - Commodity Contract - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024
Derivatives, Fair Value [Line Items]
Commodity derivative assets	$ 224,800	$ 176,665	$ 220,585
Commodity derivative liabilities	(123,774)	(125,639)	(137,435)
Cash collateral received	(12,014)	39,025	33,199
Total	89,012	90,051	116,349
Commodity derivative assets - current
Derivatives, Fair Value [Line Items]
Commodity derivative assets	204,453	165,038	200,835
Commodity derivative liabilities	(37,411)	(55,262)	(53,722)
Cash collateral received	(12,014)	39,025	31,510
Derivative Asset, Fair Value, Amount Offset Against Collateral Including Subject To Master Netting Arrangement	155,028	148,801	178,623
Commodity derivative assets - noncurrent
Derivatives, Fair Value [Line Items]
Commodity derivative assets	9,844	1,441	9,764
Commodity derivative liabilities	(79)	(28)	(165)
Cash collateral received	0	0	0
Derivative Asset, Fair Value, Amount Offset Against Collateral Including Subject To Master Netting Arrangement	9,765	1,413	9,599
Commodity derivative liabilities - current
Derivatives, Fair Value [Line Items]
Commodity derivative assets	10,436	10,158	9,879
Commodity derivative liabilities	(80,084)	(69,924)	(78,647)
Cash collateral received	0	0	1,689
Derivative Liability, Fair Value, Amount Not Offset Against Collateral Including Before Subject To Master Netting Arrangement	69,648	59,766	67,079
Commodity derivative liabilities - noncurrent
Derivatives, Fair Value [Line Items]
Commodity derivative assets	67	28	107
Commodity derivative liabilities	(6,200)	(425)	(4,901)
Cash collateral received	0	0	0
Derivative Liability, Fair Value, Amount Not Offset Against Collateral Including Before Subject To Master Netting Arrangement	$ 6,133	$ 397	$ 4,794

Derivative Asset, Fair Value, Amount Offset Against Collateral Including Subject To Master Netting Arrangement

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Derivative Liability, Fair Value, Amount Not Offset Against Collateral Including Before Subject To Master Netting Arrangement

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Amount of obligation to return cash collateral under master netting arrangements that have not been offset against derivative assets.

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The net amount as of the balance sheet date of the fair value of derivative assets and derivative liabilities that in accordance with the entity's accounting policy were offset against collateral under a master netting arrangement.

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Fair value, before 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. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Fair value, before effects of master netting arrangements, of a financial liability or 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. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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