Asset Retirement Obligations (Tables)

9 Months Ended

Sep. 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	(3)		495		492
Amounts paid	(172)		—		(172)
Reclassifications	189		(189)		—
Balance at September 30, 2023	$	257	$	7,543	$	7,800