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Supplemental Gas Data (unaudited) - Average Unit Prices and Average Production Costs (Details) Mcfe in Thousands | 12 Months Ended
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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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- Definition Average effects of financial settlements (per thousand cubic feet) + References No definition available. + Details
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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 + Details
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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 + Details
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