Derivatives (Schedule of Fair Value of Derivative Assets and Liabilities) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Derivatives, Fair Value [Line Items]
Embedded Derivative, Fair Value, Liability	$ (87,500)
Preferred Distribution Rate Reset Election | Other long-term liabilities
Derivatives, Fair Value [Line Items]
Embedded Derivative, Fair Value, Liability	(87,468)	$ (52,372)
Not qualifying or not designated as hedges under accounting rules | Commodity Derivatives | Current Assets - Other
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	6,856	310
Derivative Asset, Fair Value, Gross Liability	(837)	(310)
Asset Derivatives	6,019	0
Derivative Liability, Fair Value, Gross Liability	(837)	(2,380)
Derivative Liability, Fair Value, Gross Asset	837	2,380
Liability Derivatives	0	0
Not qualifying or not designated as hedges under accounting rules | Swaps | Current Assets - Other
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	300	1,867
Not qualifying or not designated as hedges under accounting rules | Swaps | Accrued Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	(946)	(608)
Designated as hedges under accounting rules | Commodity Derivatives | Current Assets - Other
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	688	49
Derivative Asset, Fair Value, Gross Liability	(504)	(49)
Asset Derivatives	184	0
Derivative Liability, Fair Value, Gross Liability	(504)	(209)
Derivative Liability, Fair Value, Gross Asset	504	209
Liability Derivatives	$ 0	$ 0