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Derivatives and Fair Value (Summary of Commodity Swaps) (Details)	3 Months Ended
	Mar. 31, 2021 $ / bbl bbl
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Barrels	550,523
Commodity Contract April 2021 Through January 2022 [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Barrels	550,523
Weighted Average Fixed Price | $ / bbl	53.10

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- Definition

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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- Definition

Nominal volume used to calculate payments on a derivative instrument.

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- Definition

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

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