Costs Incurred for Property Acquisition, Exploration and Development (Detail) - USD ($) $ in Thousands		6 Months Ended			12 Months Ended
		Jun. 30, 2022		Jun. 30, 2021	Dec. 31, 2021
Acquisitions:
Acreage purchases	[1]	$ 15,540			$ 21,942
Development	[1]	227,368			381,753
Gas gathering facilities:
Development	[1]	211			3,402
Subtotal	[1]	255,324			436,981
Asset retirement obligations		2,965	[1]	$ 2,098	18,634	[1]
Total costs incurred	[1]	258,289			455,615
Exploration Expense
Exploration:
Drilling	[1]	0			6,329
Expense	[1]	11,435			22,048
Stock-based compensation expense	[1]	$ 770			$ 1,507

[1] Includes costs incurred whether capitalized or expensed.