Derivatives (Schedule of Fair Value of Derivative Assets and Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Derivatives, Fair Value [Line Items]
Embedded Derivative, Fair Value, Liability	$ (76,800)
Preferred Distribution Rate Reset Election | Other long-term liabilities
Derivatives, Fair Value [Line Items]
Embedded Derivative, Fair Value, Liability	(76,817)
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	4,100	$ 310
Derivative Asset, Fair Value, Gross Liability	(819)	(310)
Asset Derivatives	3,281	0
Derivative Liability, Fair Value, Gross Liability	(819)	(2,380)
Derivative Liability, Fair Value, Gross Asset	819	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	135	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	(810)	(608)
Designated as hedges under accounting rules | Commodity Derivatives | Current Assets - Other
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	1,715	49
Derivative Asset, Fair Value, Gross Liability	(407)	(49)
Asset Derivatives	1,308	0
Derivative Liability, Fair Value, Gross Liability	(407)	(209)
Derivative Liability, Fair Value, Gross Asset	407	209
Liability Derivatives	$ 0	$ 0