Note 14 - Asset Retirement Obligation

12 Months Ended

Dec. 31, 2022

Notes to Financial Statements

Asset Retirement Obligation Disclosure [Text Block]

NOTE 14 — ASSET RETIREMENT OBLIGATION

The following table presents a reconciliation of the beginning and ending aggregate carrying amount of asset retirement obligation for the years presented below:

	Year Ended December 31,
	2022			2021		2020
	(Dollars in thousands)
Balance at beginning of year	$	84,891		$	63,457	$	50,183
Revision in estimated cash flows		(1,802	)		10,504		(165	)
Liabilities incurred and acquired		9,314			6,953		10,207
Accretion expense		5,257			3,977		3,232
Balance at end of year	$	97,660		$	84,891	$	63,457