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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Gains and Losses from Derivative Financial Instruments (Detail) - 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
Derivative [Line Items] |  |  |  |
Gain (loss) on Derivatives Recognized in Earnings | $ 142,822 | $ 75,163 | $ 48,330 | $ 89,218
Natural gas price derivatives |  |  |  |
Derivative [Line Items] |  |  |  |
Gain (loss) on Derivatives Recognized in Earnings | $ 142,822 | $ 75,163 | $ 48,330 | $ 89,218

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- Definition Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A + Details
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