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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Derivative Instruments (Detail) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Asset Derivative Financial Instruments:    
Derivative Financial Instruments - Current Asset $ 53,156 $ 19,206
Derivative Financial Instruments - Long-Term Asset 22,230 0
Liability Derivative Financial Instruments:    
Derivative Financial Instruments - Current Liability 0 27,636
Natural Gas Price Derivatives - Derivative Financial Instruments - Current Asset    
Asset Derivative Financial Instruments:    
Derivative Financial Instruments - Current Asset 53,156 19,206
Natural Gas Price Derivatives - Derivative Financial Instruments - Long-Term Asset    
Asset Derivative Financial Instruments:    
Derivative Financial Instruments - Long-Term Asset 22,230 0
Natural Gas Price Derivatives - Derivative Financial Instruments - Current Liability    
Liability Derivative Financial Instruments:    
Derivative Financial Instruments - Current Liability $ 0 $ 27,636