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3dfx (Tables)
6 Months Ended
Jul. 31, 2011
Notes to financial statements [Abstract]  
Purchase Price Allocation of Assets Acquired from 3dfx
  
 
Fair Market Value
 
Straight-Line Amortization Period
   
(In thousands)
 
(Years)
Property and equipment
 
$
2,433
 
1-2
Trademarks
   
11,310
 
5
Goodwill
   
85,418
 
-
 Total
 
$
99,161