SEGMENT REPORTING - Summary of Revenues Attributable to Services Provided by Company (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenue from External Customer [Line Items]
Revenues	$ 352,735	$ 295,268	$ 904,975	$ 812,962
Solid waste operations
Revenue from External Customer [Line Items]
Revenues	277,248	215,040	689,743	584,346
Collection
Revenue from External Customer [Line Items]
Revenues	206,093	144,117	495,917	400,910
Disposal
Revenue from External Customer [Line Items]
Revenues	66,337	66,147	181,433	169,503
Power generation
Revenue from External Customer [Line Items]
Revenues	1,797	1,643	5,042	6,050
Processing
Revenue from External Customer [Line Items]
Revenues	3,021	3,133	7,351	7,883
Resource Solutions operations
Revenue from External Customer [Line Items]
Revenues	75,487	80,228	215,232	228,616
Processing
Revenue from External Customer [Line Items]
Revenues	27,782	32,159	75,970	93,421
National Accounts
Revenue from External Customer [Line Items]
Revenues	$ 47,705	$ 48,069	$ 139,262	$ 135,195