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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Landfill and Lease Accounting (Detail)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
USD ($)
agreement
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Property, Plant and Equipment [Line Items]      
Capitalized interest $ 718 $ 413 $ 263
Closure and post-closure costs incurrence period 30 years    
Estimate of inflation rate 1.60%    
Accretion expense $ 6,775 6,436  
Number of operation and management agreements entered into | agreement 3    
Closure and post closure costs      
Property, Plant and Equipment [Line Items]      
Accretion expense $ 6,775 6,436 $ 6,227
Surety bond 209,275 205,048  
Letters of credit $ 0 $ 0  
Discount rate | Minimum      
Property, Plant and Equipment [Line Items]      
Asset retirement obligation measurement input 5.50%    
Discount rate | Maximum      
Property, Plant and Equipment [Line Items]      
Asset retirement obligation measurement input 9.90%