Derivatives (Fair Value of Derivative Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Liability Derivatives:
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other	Other
Not Designated As Hedging Instrument | Commodity Derivatives
Asset Derivatives:
Gross amount of recognized assets	$ 1,235	$ 1,238
Gross amount offset in the Consolidated Balance Sheets	1,235	1,238
Net amount of assets presented in the Consolidated Balance Sheets	0	0
Liability Derivatives:
Net amount of liabilities presented in the Consolidated Balance Sheets	0	(5,844)
Not Designated As Hedging Instrument | Commodity Derivatives | Current Assets - Other(1)
Liability Derivatives:
Gross amount of recognized liabilities	(12,384)	(11,061)
Gross amount offset in the Consolidated Balance Sheets	12,384	5,217
Not Designated As Hedging Instrument | Swap | Current Assets - Other(1)
Asset Derivatives:
Gross amount of recognized assets	3,710	36,844
Not Designated As Hedging Instrument | Swap | Current Liabilities - Accrued Liabilities
Liability Derivatives:
Gross amount of recognized liabilities	(5,536)	(4,692)
Designated as Hedging Instrument | Commodity Derivatives
Asset Derivatives:
Gross amount of recognized assets	716	0
Gross amount offset in the Consolidated Balance Sheets	716	0
Net amount of assets presented in the Consolidated Balance Sheets	0	0
Liability Derivatives:
Net amount of liabilities presented in the Consolidated Balance Sheets	0	0
Designated as Hedging Instrument | Commodity Derivatives | Current Assets - Other(1)
Liability Derivatives:
Gross amount of recognized liabilities	(120)	0
Gross amount offset in the Consolidated Balance Sheets	$ 120	$ 0