3dfx (Tables)
 3 Months Ended
Apr. 27, 2014
Notes to financial statements [Abstract]  
Purchase Price Allocation of Assets Acquired from 3dfx
  
Fair Market Value
 
Straight-Line Amortization Period
 
(In thousands)
 
(In years)
Property and equipment
$
2,433

 
1-2

Trademarks
11,310

 
5

Goodwill
85,418

 
—

Total
$
99,161