ASSET RETIREMENT OBLIGATIONS (Tables)

3 Months Ended

Mar. 31, 2020

ASSET RETIREMENT OBLIGATION

Schedule of Asset Retirement Obligations

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

	Three Months Ended
		March 31,
		2020
Obligations at beginning of period		$	78,914
Liabilities incurred			—
Liabilities settled			—
Accretion expense			629
Change in cash flow estimate			3,337
Total obligations at end of period		$	82,880
Less current obligations at end of period			(1,802)
Long-term obligations at end of period		$	81,078