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RECLAMATION LIABILITIES (Tables)
12 Months Ended
Dec. 31, 2023
Asset Retirement Obligation [Abstract]  
Schedule of Change in Asset Retirement Obligation
Changes in Reclamation liabilities during the years ended December 31 were as follows (in thousands): 
20232022
Balance as of January 1
$164,047 $125,044 
Reclamation expenditures 
(1,466)(1,221)
Accretion expense  
8,698 6,035 
Additions, changes in estimate and other
3,742 34,189 
Obligations related to divested properties
(1,202)— 
Balance as of December 31
$173,819 $164,047 
Less: current portion (3,364)(10,075)
Non-current reclamation liabilities$170,455 $153,972