Costs Incurred for Property Acquisition, Exploration and Development (Detail) - USD ($) $ in Thousands		3 Months Ended			12 Months Ended
		Mar. 31, 2023		Mar. 31, 2022	Dec. 31, 2022
Acquisitions:
Acreage purchases	[1]	$ 11,735			$ 28,735
Development	[1]	139,022			460,668
Gas gathering facilities:
Development	[1]	759			1,466
Subtotal	[1]	156,120			517,641
Asset retirement obligations		790	[1]	$ 1,377	18,096	[1]
Total costs incurred	[1]	156,910			535,737
Exploration Expense
Exploration:
Drilling	[1]	0			0
Expense	[1]	4,284			25,194
Stock-based compensation expense	[1]	$ 320			$ 1,578

[1] Includes costs incurred whether capitalized or expensed.