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FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)
3 Months Ended
Mar. 31, 2020
Fair Value Disclosures [Abstract]  
Summary of Financial Assets and Liabilities Measured at Fair Value
Summaries of our financial assets and liabilities that are measured at fair value on a recurring basis follow:
 Fair Value Measurement at March 31, 2020 Using:
 Quoted Prices in
Active Markets for
Identical Assets
(Level 1)
Significant Other
Observable Inputs
(Level 2)
Significant
Unobservable
Inputs
(Level 3)
Assets:
Restricted investment securities - landfill closure$1,410  $—  $—  
Liabilities:
Interest rate swaps$—  $13,026  $—  


 Fair Value Measurement at December 31, 2019 Using:
 Quoted Prices in
Active Markets for
Identical Assets
(Level 1)
Significant Other
Observable Inputs
(Level 2)
Significant
Unobservable Inputs
(Level 3)
Assets:
Restricted investment securities - landfill closure$1,586  $—  $—  
Liabilities:
Interest rate swaps$—  $5,427  $—