Derivative Instruments - Offsetting Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Total Derivative Liabilities
Offsetting Liabilities [Line Items]
Gross  Liabilities	$ (1,507)	$ (19,834)
Gross Amounts Offset	535	15,149
Net Liabilities	(971)	(4,685)
Cash Collateral Offset	0	491
Net Amount Presented	(971)	(4,194)
Total Current Derivative Liabilities
Offsetting Liabilities [Line Items]
Gross  Liabilities	(87)	(19,598)
Gross Amounts Offset	1	14,949
Net Liabilities	(86)	(4,649)
Cash Collateral Offset	0	491
Net Amount Presented	(86)	(4,158)
Non-trading commodity derivatives
Offsetting Liabilities [Line Items]
Gross  Liabilities	0	(18,195)
Gross Amounts Offset	0	14,504
Net Liabilities	0	(3,691)
Cash Collateral Offset	0	491
Net Amount Presented	0	(3,200)
Trading commodity derivatives
Offsetting Liabilities [Line Items]
Gross  Liabilities	(87)	(1,403)
Gross Amounts Offset	1	445
Net Liabilities	(86)	(958)
Cash Collateral Offset	0	0
Net Amount Presented	(86)	(958)
Total Non-current Derivative Assets
Offsetting Liabilities [Line Items]
Gross  Liabilities	(1,420)	(236)
Gross Amounts Offset	534	200
Net Liabilities	(885)	(36)
Cash Collateral Offset	0	0
Net Amount Presented	(885)	(36)
Non-trading commodity derivatives
Offsetting Liabilities [Line Items]
Gross  Liabilities	(1,420)	(236)
Gross Amounts Offset	534	200
Net Liabilities	(885)	(36)
Cash Collateral Offset	0	0
Net Amount Presented	(885)	(36)
Trading commodity derivatives
Offsetting Liabilities [Line Items]
Gross  Liabilities	0	0
Gross Amounts Offset	0	0
Net Liabilities	0	0
Cash Collateral Offset	0	0
Net Amount Presented	$ 0	$ 0