Natural Gas and Oil Exploration, Development and Production Activities - Natural Gas and Oil Exploration, Development and Production Activities (Detail) - USD ($) $ in Thousands		6 Months Ended			12 Months Ended
		Jun. 30, 2025		Jun. 30, 2024	Dec. 31, 2024
Acquisitions:
Acreage purchases	[1]	$ 27,542			$ 57,869
Development	[1]	268,507			577,093
Gas gathering facilities:
Development	[1]	3,451			4,336
Subtotal	[1]	314,602			678,710
Asset retirement obligations		2,327	[1]	$ 2,386	13,845	[1]
Total costs incurred	[1]	316,929			692,555
Exploration Expense
Exploration:
Drilling	[1]	783			12,569
Expense	[1]	13,606			25,489
Stock-based compensation expense	[1]	$ 713			$ 1,354

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