Asset Retirement Obligations (Tables)

6 Months Ended

Jun. 30, 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	(2)		330		328
Amounts paid	(132)		—		(132)
Reclassifications	112		(112)		—
Balance at June 30, 2023	$	221	$	7,455	$	7,676