Costs Incurred for Property Acquisition, Exploration and Development (Detail) - USD ($) $ in Thousands		6 Months Ended			12 Months Ended
		Jun. 30, 2024		Jun. 30, 2023	Dec. 31, 2023
Acquisitions:
Acreage purchases	[1]	$ 28,081			$ 40,067
Development	[1]	301,162			568,484
Gas gathering facilities:
Development	[1]	2,144			3,123
Subtotal	[1]	355,170			638,204
Asset retirement obligations		2,386	[1]	$ 1,917	4,616	[1]
Total costs incurred	[1]	357,556			642,820
Exploration Expense
Exploration:
Drilling	[1]	12,606			0
Expense	[1]	10,518			25,280
Stock-based compensation expense	[1]	$ 659			$ 1,250

[1] (a) Includes costs incurred whether capitalized or expensed.