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Property and Equipment (Tables)
12 Months Ended
Apr. 30, 2011
Property and Equipment  
Components of Property and Equipment
                         
(in 000s)        
 
As of April 30,   2011     2010        
 
 
Land and other non-depreciable assets
  $ 2,245     $ 2,482          
Buildings
    154,519       161,460          
Computers and other equipment
    475,351       488,160          
Capitalized software
    156,108       147,104          
Leasehold improvements
    191,943       199,370          
Construction in process
    4,374       3,902          
   
      984,540       1,002,478          
Less: Accumulated depreciation and amortization
    (677,220 )     (657,008 )        
   
    $   307,320     $   345,470          
Property and Equipment Subject to Capital Lease
                         
(in 000s)        
 
As of April 30,   2011     2010        
 
 
Property and equipment under capital lease
  $  47,842     $  47,844          
Less accumulated amortization
    (35,056 )     (31,418 )        
   
    $ 12,786     $ 16,426