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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Landfill and Lease Accounting (Details)
 12 Months Ended
Dec. 31, 2024
USD ($)
agreement
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Property, Plant and Equipment [Line Items]      
Capitalized interest $ 1,085,000 $ 643,000 $ 330,000
Closure and post-closure costs incurrence period 30 years    
Estimate of inflation rate 2.60%    
Accretion expense $ 11,350,000 9,529,000  
Number of operation and management agreements entered into | agreement 3    
Closure and post closure costs      
Property, Plant and Equipment [Line Items]      
Accretion expense $ 11,350,000 9,529,000 $ 7,565,000
Surety bond 266,446,000 241,728,000  
Letters of credit $ 0 $ 0  
Discount rate | Minimum      
Property, Plant and Equipment [Line Items]      
Asset retirement obligation measurement input 6.10%    
Discount rate | Maximum      
Property, Plant and Equipment [Line Items]      
Asset retirement obligation measurement input 10.00%