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FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)
6 Months Ended
Jun. 30, 2023
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 June 30, 2023 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$2,005 $— $— 
Interest rate swaps— 11,910 — 
$2,005 $11,910 $— 
Liabilities:
Contingent consideration - acquisition$— $— $376 
Interest rate swaps— 18 — 
$— $18 $376 

 Fair Value Measurement at December 31, 2022 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$1,900 $— $— 
Interest rate swaps— 11,806 — 
$1,900 $11,806 $— 
Liabilities:
Contingent consideration - acquisition$— $— $965