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Summary of significant accounting policies - Production and Ad Valorem taxes (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Accounting Policies [Abstract] |  |  |
Production Tax Expense | $ 24.9 | $ 26.9 | $ 17.1
Ad valorem taxes | $ 2.8 | $ 3.7 | $ 1.0

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- Definition Taxes incurred on the value of its oil and natural gas properties in Texas, Louisiana and Oklahoma. + References No definition available. + Details
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Balance Type: | debit
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- References No definition available. + Details
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- Definition A tax assessed on oil and gas production. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 + Details
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