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Derivatives and Fair Value (Summary of Commodity Swaps) (Details)	6 Months Ended
	Jun. 30, 2021 $ / bbl bbl
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Barrels	729,123
Commodity Contract One - July 2021 To January 2022 [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Barrels	351,254
Weighted Average Fixed Price | $ / bbl	53.10
Commodity Contract Two - July 2021 To October 2021 [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Barrels	377,869
Weighted Average Fixed Price | $ / bbl	66.13

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Nominal volume used to calculate payments on a derivative instrument.

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Average fixed price related to the group of price risk swap derivatives.

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