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RESTRICTED ASSETS
 12 Months Ended
Dec. 31, 2019
Receivables [Abstract]  
RESTRICTED ASSETS RESTRICTED ASSETS
Restricted assets consist of investment securities held in trust on deposit with various banks as collateral for our obligations relative to our landfill final capping, closure and post-closure costs.
A summary of restricted assets is as follows:
 December 31,
 Non Current:
20192018
Restricted investment securities - landfill closure$1,586  $1,248