Costs Incurred for Property Acquisition, Exploration and Development (Detail) - USD ($) $ in Thousands		6 Months Ended			12 Months Ended
		Jun. 30, 2023		Jun. 30, 2022	Dec. 31, 2022
Acquisitions:
Acreage purchases	[1]	$ 20,007			$ 28,735
Development	[1]	304,577			460,668
Gas gathering facilities:
Development	[1]	1,211			1,466
Subtotal	[1]	337,847			517,641
Asset retirement obligations		1,917	[1]	$ 2,965	18,096	[1]
Total costs incurred	[1]	339,764			535,737
Exploration Expense
Exploration:
Drilling	[1]	0			0
Expense	[1]	11,429			25,194
Stock-based compensation expense	[1]	$ 623			$ 1,578

[1] Includes costs incurred whether capitalized or expensed.