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Derivative Instruments - Fair value gains (losses) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Summary of realized and unrealized gains (losses) on derivative instruments |  |  |  |
Derivative fair value gains (losses) |  |  | $ 20,981 | $ 22,229
Commodity derivatives | Revenue |  |  |  |
Summary of realized and unrealized gains (losses) on derivative instruments |  |  |  |
Derivative fair value gains (losses) | $ 39,374 | $ 18,004 | 22,133 | 22,726
Embedded derivatives | Revenue |  |  |  |
Summary of realized and unrealized gains (losses) on derivative instruments |  |  |  |
Derivative fair value gains (losses) | $ (131) | $ 364 | $ (1,152) | $ (497)

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- Definition Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 182 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480401/815-10-55-182 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4CC -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4CC Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 21 -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147476148/220-40-50-21 + Details
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