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Goodwill and Intangible Assets (Tables)
 12 Months Ended
Apr. 30, 2014
Goodwill And Intangible Assets Disclosure [Abstract]  
Schedule of Activity and Balances Related to Goodwill

The following tables show the activity and balances related to goodwill from April 30, 2012 through April 30, 2014:

 

     April 30, 2013      Acquisitions      Other (1)     April 30, 2014  

Eastern region

    $ 16,858       $ 539       $ 32      $ 17,429   

Western region

      86,880         790         (4 )      87,666   

Recycling

      12,190         125         —          12,315   

Other

      —           1,729         —          1,729   
  

 

 

     

 

 

     

 

 

    

 

 

  

Total

    $ 115,928       $ 3,183       $ 28      $ 119,139   
  

 

 

     

 

 

     

 

 

    

 

 

  

 

     April 30, 2012      Acquisitions      Other (2)     April 30, 2013  

Eastern region

    $ 58       $ 12,939       $ 3,861      $ 16,858   

Western region

      89,458         1,283         (3,861 )      86,880   

Recycling

      12,190         —           —          12,190   
  

 

 

     

 

 

     

 

 

    

 

 

  

Total

    $ 101,706       $ 14,222       $ —        $ 115,928   
  

 

 

     

 

 

     

 

 

    

 

 

  

 

(1) Goodwill adjustments related to prior year acquisition activity, including the finalization of the deferred tax liability associated with the December 5, 2012 BBI acquisition.
(2) Goodwill reclassification between the Eastern and Western regions is associated with the realignment of certain operations between the reporting units during fiscal year 2013.
Components of Intangible Assets

Intangible assets as of April 30, 2014 and 2013 consist of the following:

 

     Covenants
Not-to-Compete		     Client Lists     Total  

Balance, April 30, 2014

       

Intangible assets

    $ 17,245      $ 15,760      $ 33,005   

Less accumulated amortization

      (15,363 )      (4,222 )      (19,585 ) 
  

 

 

    

 

 

    

 

 

  
   $ 1,882      $ 11,538      $ 13,420   
  

 

 

    

 

 

    

 

 

  

 

     Covenants
Not-to-Compete		     Client Lists     Total  

Balance, April 30, 2013

       

Intangible assets

    $ 17,043      $ 11,660      $ 28,703   

Less accumulated amortization

      (14,800 )      (2,229 )      (17,029 ) 
  

 

 

    

 

 

    

 

 

  
   $ 2,243      $ 9,431      $ 11,674   
  

 

 

    

 

 

    

 

 

  
Estimated Amortization Expenses

The intangible amortization expense estimated as of April 30, 2014 for the five fiscal years following fiscal year 2014 and thereafter is as follows:

 

2015

    2016      2017      2018      2019      Thereafter  

$2,925

    $ 2,314       $ 1,874       $ 1,652       $ 1,449       $ 3,206