Asset Retirement Obligations (Tables)

12 Months Ended

Dec. 31, 2020

The following table summarizes the changes in our asset retirement obligations:


	Successor		Predecessor
	Period from Sept. 19, 2020 through Dec. 31, 2020		Period from Jan. 1, 2020 through Sept. 18, 2020		Year Ended
In thousands					Dec. 31, 2019
Beginning asset retirement obligations	$	163,368	$	181,760	$	176,585
Liabilities incurred and assumed during period	738		736		4,354
Revisions in estimated retirement obligations	22,660		3,592		9,206
Liabilities settled and sold during period	(3,439)		(10,041)		(24,342)
Accretion expense	2,954		11,329		15,957
Fresh start accounting adjustment	—		(24,008)		—
Ending asset retirement obligations	186,281		163,368		181,760
Less: current asset retirement obligations(1)	(6,943)		(4,930)		(4,652)
Long-term asset retirement obligations	$	179,338	$	158,438	$	177,108

(1)Included in “Accounts payable and accrued liabilities” in our Consolidated Balance Sheets.