Asset Retirement Obligations (Tables)

9 Months Ended

Sep. 30, 2022

Asset Retirement Obligations

Schedule of accretion expense

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
(in thousands)	2022		2021		2022		2021
Accretion expense	$	513	$	384	$	1,471	$	1,066

Schedule of asset retirement obligation activity

(in thousands)
Beginning balance	$	12,833
Liabilities incurred		2,841
Accretion expense		1,471
Change in estimate		(51)
Liabilities settled		(616)
Ending balance	$	16,478