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ACCRUED FINAL CAPPING, CLOSURE AND POST CLOSURE - Summary of Changes to Accrued Capping, Closure and Post-Closure Liabilities (Detail) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]    
Beginning balance $ 113,678 $ 86,914
Obligations incurred 4,023 3,592
Revision in estimates 0 1,443
Accretion expense 7,193 5,685
Obligations settled (7,338) (3,027)
Ending balance $ 117,556 $ 94,607