Quarterly report [Sections 13 or 15(d)]

COMMITMENTS AND CONTINGENCIES - contingent decommissioning obligations (Details)

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COMMITMENTS AND CONTINGENCIES - contingent decommissioning obligations (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
COMMITMENTS AND CONTINGENCIES    
Contingent decommissioning obligations, beginning of period $ 36,157 $ 22,551
Liabilities settled (1,695) (1,377)
Accrual for additional estimated liabilities   196
Contingent decommissioning obligations, end of period 34,462 21,370
Less: Current portion (8,717)  
Long-term $ 25,745 $ 21,370