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Supplemental Gas Data (unaudited) - Average Unit Prices and Average Production Costs (Details) Mcfe in Thousands	12 Months Ended
	Dec. 31, 2023 dollarsPerMcfe Mcfe	Dec. 31, 2022 dollarsPerMcfe Mcfe	Dec. 31, 2021 dollarsPerMcfe Mcfe
Average Sales Price and Production Costs Per Unit of Production [Line Items] (Deprecated 2019-01-31)
Production (MMcfe) | Mcfe	560,366	580,169	590,248
Natural Gas, Per Thousand Cubic Feet
Average Sales Price and Production Costs Per Unit of Production [Line Items] (Deprecated 2019-01-31)
Total Average Sales Price Before Effects of Commodity Derivative Financial Settlements (per Mcfe)	2.32	6.29	3.70
Average Effects of Commodity Derivative Financial Settlements (per Mcfe)	0.32	(3.35)	(0.98)
Total Average Sales Price Including Effects of Commodity Derivative Financial Settlements (per Mcfe)	2.61	3.17	2.79
Average Lifting Costs, Excluding Ad Valorem and Severance Taxes (per Mcfe)	0.11	0.11	0.08

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Average Gas Sales Price before effects of financial settlements

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- Definition

Average Lifting Costs, Excluding Ad Valorem And Severance Taxes

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- Definition

Average effects of financial settlements (per thousand cubic feet)

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- Definition

Average gas sales price including effects of financial settlements (per thousand cubic feet)

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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.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Regulation S-K (SK)
-Number 229
-Section 1204
-Paragraph b
-Subparagraph (2)
-Publisher SEC

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- Definition

Energy measure of decrease in quantity of proved reserve of oil and gas resulting from production, stated in a unit of energy. For example, but not limited to, barrel of oil equivalents (BOE) or one thousand cubic feet of natural gas equivalent (Mcfe).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Form 20-F
-Section Item 18
-Subsection Instruction 2
-Publisher SEC

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 932
-SubTopic 235
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482274/932-235-50-5

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