Note 3. Balance Sheet Components (Tables)
9 Months Ended
Sep. 30, 2012
Schedule of Amounts Recognized in Balance Sheet [Table Text Block]
   
September 30, 2012
   
December 25, 2011
 
   
(in thousands)
 
             
Cash and cash equivalents
           
Cash
  $ 268,001     $ 192,802  
Cash equivalents:
               
Money market funds
    9,180       1,172  
FDIC insured certificates of deposit
    2,279       876  
Cash and cash equivalents
  $ 279,460     $ 194,850  
                 
Short-term investments
               
Commercial paper
  $ 14,980     $ 24,963  
FDIC insured certificates of deposit
    33,626       42,892  
Short-term investments
  $ 48,606     $ 67,855  
                 
Account receivable, net
               
Accounts receivable, gross
  $ 117,731     $ 110,567  
Allowance for doubtful accounts
    (285 )     (224 )
Account receivable, net
  $ 117,446     $ 110,343  
                 
Inventories
               
Raw materials
  $ 9,958     $ 12,442  
Work-in-process
    139,909       130,671  
Finished goods
    22,636       30,976  
Inventories
  $ 172,503     $ 174,089  
                 
Property, plant and equipment, net
               
Land
  $ 45,168     $ 51,778  
Buildings and leasehold improvements
    60,027       68,177  
Equipment
    327,214       309,288  
Construction in progress
    11,925       10,806  
Accumulated depreciation and amortization
    (268,878 )     (230,822 )
Property, plant and equipment, net
  $ 175,456     $ 209,227