XML 35 R24.htm IDEA: XBRL DOCUMENT v3.5.0.2
Accrued Final Capping, Closure and Post Closure (Tables)
 6 Months Ended
Jun. 30, 2016
Asset Retirement Obligation Disclosure [Abstract]  
Summary of Changes to Accrued Capping, Closure and Post-Closure Liabilities

A summary of the changes to accrued final capping, closure and post-closure liabilities follows:

 

     Six Months Ended
June 30,		  
     2016      2015  

Beginning balance

    $ 41,041       $ 39,829   

Obligations incurred

      1,143         1,116   

Revisions in estimates (1)

      (56 )       —     

Accretion expense

      1,782         1,665   

Obligations settled (2)

      (432 )       (984 ) 
  

 

 

     

 

 

  

Ending balance

    $ 43,478       $ 41,626   
  

 

 

     

 

 

  

 

(1) Relates to changes in estimates and assumptions concerning anticipated waste flow, cost and timing of future final capping, closure and post-closure activities at certain of our landfills.
(2) Includes amounts that are being processed through accounts payable as a part of our disbursement cycle.