Costs Incurred for Property Acquisition, Exploration and Development

9 Months Ended

Sep. 30, 2021

Extractive Industries [Abstract]

Costs Incurred for Property Acquisition, Exploration and Development

(19) Costs Incurred for Property Acquisition, Exploration and Development (a)

	Nine Months Ended September 30, 2021		Year Ended December 31, 2020
	(in thousands)
Acquisitions:
Acreage purchases	$	14,014	$	26,166
Development		298,300		369,093
Exploration:
Drilling		6,299		7,709
Expense		15,331		31,376
Stock-based compensation expense		1,116		1,279
Gas gathering facilities:
Development		2,846		3,694
Subtotal		337,906		439,317
Asset retirement obligations		2,879		2,610
Total costs incurred	$	340,785	$	441,927

(a) Includes costs incurred whether capitalized or expensed.