Asset Retirement Obligations (Tables)

3 Months Ended

Mar. 31, 2023

Asset Retirement Obligation Disclosure [Abstract]

Schedule of Changes in Asset Retirement Obligation Liabilities

The components of the changes in the asset retirement obligation liabilities were:

(Dollars in thousands)	Short-Term Portion		Long-Term Portion		Total
Balance at December 31, 2022	$	243	$	7,237	$	7,480
Accretion	(1)		165		164
Amounts paid	(83)		—		(83)
Reclassifications	49		(49)		—
Balance at March 31, 2023	$	208	$	7,353	$	7,561