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

6 Months Ended

Jun. 30, 2020

Extractive Industries [Abstract]

Costs Incurred for Property Acquisition, Exploration and Development

	Six Months Ended June 30, 2020		Year Ended December 31, 2019
	(in thousands)
Acquisitions:
Acreage purchases	$	8,736	$	57,324
Development		223,401		666,984
Exploration:
Expense		14,402		35,117
Stock-based compensation expense		702		1,566
Gas gathering facilities:
Development		2,386		3,583
Subtotal		249,627		764,574
Asset retirement obligations		4,247		11,193
Total costs incurred	$	253,874	$	775,767

^(a) Includes costs incurred whether capitalized or expensed.