Risk Management and Derivative Instruments - Balance Sheet Presentation (Detail) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Derivative Instruments and Hedges, Assets
Cash collateral received	$ 0	$ 0
Cash collateral pledged	0	0
Net recorded fair value, Current assets	15,556	17,669
Net recorded fair value, Non-Current assets	4,419	9,405
Net recorded fair value, Current liabilities	0	0
Net recorded fair value, Non current liabilities	0	0
Short-term derivative instruments
Derivative Instruments and Hedges, Assets
Asset Derivatives, Gross fair value	17,724	21,657
Asset Derivatives, Netting arrangements	(2,168)	(3,988)
Liability Derivatives, Gross fair value	2,168	3,988
Liability Derivatives, Netting arrangements	(2,168)	(3,988)
Short-term derivative instruments | Commodity derivatives
Derivative Instruments and Hedges, Assets
Asset Derivatives, Gross fair value	17,724	21,657
Liability Derivatives, Gross fair value	2,168	3,988
Short-term derivative instruments | Interest rate swaps
Derivative Instruments and Hedges, Assets
Asset Derivatives, Gross fair value	0	0
Liability Derivatives, Gross fair value	0	0
Long-term derivative instruments
Derivative Instruments and Hedges, Assets
Asset Derivatives, Gross fair value	8,450	17,782
Asset Derivatives, Netting arrangements	(4,031)	(8,377)
Liability Derivatives, Gross fair value	4,031	8,377
Liability Derivatives, Netting arrangements	(4,031)	(8,377)
Long-term derivative instruments | Commodity derivatives
Derivative Instruments and Hedges, Assets
Asset Derivatives, Gross fair value	8,450	17,782
Liability Derivatives, Gross fair value	4,031	8,377
Long-term derivative instruments | Interest rate swaps
Derivative Instruments and Hedges, Assets
Asset Derivatives, Gross fair value	0	0
Liability Derivatives, Gross fair value	$ 0	$ 0