Asset Retirement Obligations (Tables)

12 Months Ended

Dec. 31, 2022

Asset Retirement Obligation Disclosure [Abstract]

Asset Retirement Obligations Table

The following table provides a summary of changes in asset retirement obligations:

	Year Ended December 31,
thousands	2022		2021
Carrying amount of asset retirement obligations at beginning of year	$	308,209	$	280,498
Liabilities incurred	10,513		23,923
Liabilities settled	(10,115)		(12,710)
Accretion expense	14,474		12,664
Revisions in estimated liabilities	(22,567)		3,834
Carrying amount of asset retirement obligations at end of year	$	300,514	$	308,209