Costs Incurred for Property Acquisition, Exploration and Development (Tables)

3 Months Ended

Mar. 31, 2022

Extractive Industries [Abstract]

Costs Incurred for Property Acquisition, Exploration and Development

	Three Months Ended March 31, 2022		Year Ended December 31, 2021
	(in thousands)
Acquisitions:
Acreage purchases	$	8,574	$	21,942
Development		107,987		381,753
Exploration:
Drilling		—		6,329
Expense		4,247		22,048
Stock-based compensation expense		452		1,507
Gas gathering facilities:
Development		7		3,402
Subtotal		121,267		436,981
Asset retirement obligations		1,377		18,634
Total costs incurred	$	122,644	$	455,615

(a) Includes costs incurred whether capitalized or expensed.