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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Asset Retirement Obligations (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]    
Obligation at beginning of the year $ 42,470 $ 39,035
Additional liabilities incurred 61 2,049
Liabilities settled (10) (892)
Accretion 2,285 2,278
Obligation at the end of the year $ 44,806 $ 42,470