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ACCRUED FINAL CAPPING, CLOSURE AND POST CLOSURE (Tables)
3 Months Ended
Mar. 31, 2022
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,
 20222021
Beginning balance$86,914 $82,533 
Obligations incurred966 1,038 
Accretion expense 1,873 1,811 
Obligations settled (1)
(926)(357)
Ending balance$88,827 $85,025 
(1)May include amounts that are being processed through accounts payable as a part of our disbursements cycle.