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Commitments and Contingencies (Tables)
 8 Months Ended
Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Future Minimum Rental Payments under Non-Cancellable Operating Leases

Future minimum rental payments under non-cancellable operating leases, which include landfill operating leases, as of December 31, 2014 are as follows:

 

Estimated Future Minimum Rental Payments as of December 31, 2014:

  

2015

    $ 13,169   

2016

      12,899   

2017

      12,448   

2018

      13,516   

2019

      12,490   

Thereafter

      117,608   
  

 

 

  

Total minimum rental payments

 $ 182,130   
  

 

 
Schedule of Environmental Liability Associated with Postdam

The changes to the environmental remediation liability associated with the Potsdam environmental remediation liability for transition period 2014, fiscal year 2014 and fiscal year 2013 are as follows:

 

     Eight Months Ended
December 31, 2014		      Fiscal Year Ended April 30,  
                2014                      2013          

Beginning balance

    $ 5,320       $ 5,297       $ 5,210   

Obligations incurred

      —           31         —     

Revisions in estimates (1)

      —           (118 )       —     

Accretion expense

      92         138         138   

Payments

      (270 )       (28 )       (51 ) 
  

 

 

     

 

 

     

 

 

  

Ending balance

 $ 5,142    $ 5,320    $ 5,297   
  

 

 

     

 

 

     

 

 

  

 

(2) Associated with changes in estimated future costs to complete the remediation, the discount rate and/or the portion of the total remediation costs that we are responsible for.
Schedule of Total Expected Environmental Remediation Payments for Succeeding Year

The total expected environmental remediation payments, in today’s dollars, for each of the five succeeding fiscal years and the aggregate amount thereafter are as follows:

 

Estimated Future Environmental Remediation Payments as of December 31, 2014:

  

2015

    $ 250   

2016

      3,084   

2017

      826   

2018

      42   

2019

      26   

Thereafter

      793   
  

 

 

  

Total

 $ 5,021   
  

 

 

  

Reconciliation of Expected Aggregate Uninflated, Undiscounted Environmental Remediation Liability to Amount Recognized in Statement of Financial Position

A reconciliation of the expected aggregate non-inflated, undiscounted environmental remediation liability to the amount recognized in the statement of financial position as of December 31, 2014 is as follows:

 

Undiscounted liability

 $ 5,021   

Plus inflation

   121   
  

 

 

  

Liability balance – December 31, 2014

 $ 5,142