ASSET RETIREMENT AND ENVIRONMENTAL RECLAMATION OBLIGATIONS (Tables)

9 Months Ended

Sep. 30, 2024

Asset Retirement Obligation And Accrual For Environmental Loss Contingencies Disclosure [Abstract]

Schedule of Asset Retirement Obligations and Environmental Reclamation Obligations

Aggregate carrying amounts of asset retirement obligations and environmental reclamation obligations are as follows (dollars in thousands):

	Nine Months Ended September 30, 2024
Obligations at beginning of period	$	217,201
Liabilities incurred	3,456
Liabilities settled	(2,628)
Accretion expense	5,669
Change in estimate	12,634
Total obligations at end of period	$	236,332
Less current obligations at end of period	(16,337)
Long-term obligations at end of period	$	219,995