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FAIR VALUE OF FINANCIAL INSTRUMENTS - Recurring Fair Value Measurements (Detail) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Assets:    
Restricted assets $ 1,084 $ 1,002
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Assets:    
Interest rate derivatives 0  
Total 1,084  
Liabilities:    
Interest rate derivatives 0  
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Restricted investments - landfill closure    
Assets:    
Restricted assets 1,084 1,002
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)    
Assets:    
Interest rate derivatives 58  
Total 58  
Liabilities:    
Interest rate derivatives 322  
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Restricted investments - landfill closure    
Assets:    
Restricted assets 0 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)    
Assets:    
Interest rate derivatives 0  
Total 0  
Liabilities:    
Interest rate derivatives 0  
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Restricted investments - landfill closure    
Assets:    
Restricted assets $ 0 $ 0