Asset Retirement Obligations (Tables)

6 Months Ended

Jun. 30, 2022

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, 2021	$	130	$	6,355	$	6,485
Accretion	69		271		340
Amounts paid	(186)		—		(186)
Reclassifications	136		(136)		—
Balance at June 30, 2022	$	149	$	6,490	$	6,639