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Supplemental Information on Oil and Natural Gas Producing Activities (Unaudited) - Calculation of Weighted Average Per Unit Prices (Unaudited) (Details)	12 Months Ended
	Dec. 31, 2019 $ / bbl $ / Mcf	Dec. 31, 2018 $ / Mcf $ / bbl	Dec. 31, 2017 $ / bbl $ / Mcf
Oil
Oil and Gas, Present Activity [Line Items]
Weighted Average Sales Price (USD per barrel for Oil and NGLs/USD per Mcf for Natural Gas)	50.63	60.86	48.47
NGL
Oil and Gas, Present Activity [Line Items]
Weighted Average Sales Price (USD per barrel for Oil and NGLs/USD per Mcf for Natural Gas)	12.45	25.62	20.28
Natural gas
Oil and Gas, Present Activity [Line Items]
Weighted Average Sales Price (USD per barrel for Oil and NGLs/USD per Mcf for Natural Gas) | $ / Mcf	1.16	1.77	1.90

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- Definition

Based upon 12-month average market prices at year-end adjusted for fixed or determinable contracts that are in existence at year-end.

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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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No definition available.

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