XML 54 R43.htm IDEA: XBRL DOCUMENT v3.22.2
ACCRUED FINAL CAPPING, CLOSURE AND POST CLOSURE - Summary of Changes to Accrued Capping, Closure and Post-Closure Liabilities (Detail) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]    
Beginning balance $ 86,914 $ 82,533
Obligations incurred 2,244 2,319
Revision in estimates 1,443 0
Accretion expense 3,799 3,676
Obligations settled (2,027) (2,969)
Ending balance $ 92,373 $ 85,559