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COMMITMENTS AND CONTINGENCIES (Tables) | 6 Months Ended
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Jun. 30, 2026
COMMITMENTS AND CONTINGENCIES |
Schedule of contingent decommissioning obligations | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Six Months Ended June 30,
​ | ​ ​ ​ | 2026 | ​ ​ ​ | 2025
Contingent decommissioning obligations, beginning of period | ​ | $ | 36,157 | ​ | $ | 22,551
Liabilities settled | ​ |  | (2,891) | ​ |  | (1,439)
Accrual for additional estimated liabilities | ​ |  | — | ​ |  | 13,658
Contingent decommissioning obligations, end of period | ​ | ​ | 33,266 | ​ | ​ | 34,770
Less: Current portion | ​ |  | (8,717) | ​ |  | (759)
Long-term | ​ | $ | 24,549 | ​ | $ | 34,011

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- Definition Tabular disclosure of environmental loss contingencies being the contingent decommissioning obligations. + References No definition available. + Details
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