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Goodwill and Other Intangible Assets (Tables)
3 Months Ended
Feb. 29, 2012
Goodwill and Other Intangible Assets [Abstract]  
Summary of goodwill
         
    Three Months
Ended
February 29, 2012
 

Balance, at beginning of period

  $ 365,574  

Add: Translation adjustments

    (66
   

 

 

 

Balance, at end of period

  $ 365,508  
   

 

 

 
Intangible Assets
                                 
    February 29, 2012  
    Gross cost     Accumulated
amortization
    Net carrying
amount
    Weighted
average
remaining
lives (years)
 

Exchange and clearing organization membership interests and registrations

  $ 11,219     $     $ 11,219       N/A  

Customer relationships

    10,542       (3,128     7,414       6.7  

Trade name

    1,680       (578     1,102       1.8  

Other

    100       (8     92       13.5  
   

 

 

   

 

 

   

 

 

         
    $ 23,541     $ (3,714   $ 19,827          
   

 

 

   

 

 

   

 

 

         

 

                                 
    November 30, 2011  
    Gross cost     Accumulated
amortization
    Net carrying
amount
    Weighted
average
remaining
lives (years)
 

Exchange and clearing organization membership interests and registrations

  $ 11,219     $     $ 11,219       N/A  

Customer relationships

    10,542       (2,776     7,766       6.9  

Trade name

    1,300       (361     939       1.1  

Other

    100       (8     92       13.8  
   

 

 

   

 

 

   

 

 

         
    $ 23,161     $ (3,145   $ 20,016          
   

 

 

   

 

 

   

 

 

         
Future amortization expense related to intangible assets
         

Fiscal year

  Estimated future
amortization
expense
 

2012 (Period from April to November)

  $ 1,690  

2013

    1,319  

2014

    929  

2015

    771  

2016

    771  

2017

    714  
Mortgage servicing rights
                 
    Three Months
Ended
February 29, 2012
    Twelve Months
Ended
November 30, 2011
 

Balance, beginning of period

  $ 8,202     $ 8,263  

Add: Acquisition

    162       347  

Less: Pay down

    (211      

Less: Amortization

    (97     (408
   

 

 

   

 

 

 

Balance, end of period

  $ 8,056     $ 8,202