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ACCRUED FINAL CAPPING, CLOSURE AND POST CLOSURE (Tables)
3 Months Ended
Mar. 31, 2023
Asset Retirement Obligation Disclosure [Abstract]  
Summary of Changes to Accrued Capping, Closure and Post-Closure Liabilities
A summary of the changes to accrued final capping, closure and post-closure liabilities follows:
 Three Months Ended
March 31,
 20232022
Beginning balance$113,678 $86,914 
Obligations incurred1,247 966 
Accretion expense 2,410 1,873 
Obligations settled (1)
(1,179)(926)
Ending balance$116,156 $88,827 

(1)May include amounts that are being processed through accounts payable as a part of our disbursements cycle.