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Goodwill and Intangible Assets (Tables)
6 Months Ended
Oct. 31, 2018
Goodwill and Intangible Assets [Abstract]  
Activity in Goodwill by Segment
Goodwill

The following table summarizes the activity in goodwill by segment as of October 31, 2018:

  
April 30, 2018
  
Foreign
Translation
Adjustment
  
October 31, 2018
 
Research
 
$
463,419
  
$
(25,832
)
 
$
437,587
 
Publishing
  
283,851
   
(726
)
  
283,125
 
Solutions
  
272,531
   
(6,995
)
  
265,536
 
Total
 
$
1,019,801
  
$
(33,553
)
 
$
986,248
 

The April 30, 2018 goodwill balances for Publishing and Solutions have been revised to reflect foreign translation adjustments of $11.6 million.

Intangible Assets
Intangible Assets

Identifiable intangible assets, net consisted of the following:

  
October 31, 2018
  
April 30, 2018
 
Intangible Assets with Determinable Lives, net:
      
Content and Publishing Rights
 
$
401,341
  
$
436,760
 
Customer Relationships
  
152,803
   
161,729
 
Brands and Trademarks
  
14,340
   
16,100
 
Covenants not to Compete
  
550
   
655
 
Total
  
569,034
   
615,244
 
Intangible Assets with Indefinite Lives:
        
Brands and Trademarks
  
130,460
   
138,589
 
Content and Publishing Rights
  
88,135
   
94,238
 
Total
  
218,595
   
232,827
 
Total Intangible Assets, Net
 
$
787,629
  
$
848,071