XML 90 R45.htm IDEA: XBRL DOCUMENT v3.19.3
Landfill Accounting (Reconciliation of Final Capping, Closure and Post-Closure Liability Balance) (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Landfill Accounting [Abstract]    
Final capping, closure and post-closure liability at the beginning of the period $ 251,782  
Liabilities incurred 15,573  
Accretion expense associated with landfill obligations 10,656 $ 9,583
Closure payments (1,203)  
Assumption of closure liabilities from acquisitions 8,707  
Foreign currency translation adjustment 1,146  
Final capping, closure and post-closure liability at the end of the period $ 286,661