Note 4. Balance Sheet Components (Details) - Balance Sheet Components (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Dec. 30, 2012
Jul. 01, 2012
Dec. 25, 2011
Cash and cash equivalents        
Cash $ 199,414 $ 258,126    
Cash equivalents:        
Money market funds 2,060 1,181    
Cash and cash equivalents 205,535 262,177 228,127 194,850
Short-term investments        
Commercial paper 14,984 14,980    
Time Deposit 50,013      
Short-term investments 99,751 51,720    
Account receivable, net        
Accounts receivable, gross 113,164 107,127    
Allowance for doubtful accounts (299) (263)    
Account receivable, net 112,865 106,864    
Inventories        
Raw materials 9,430 8,647    
Work-in-process 156,335 149,722    
Finished goods 31,317 23,823    
Inventories 197,082 182,192    
Property, plant and equipment, net        
Land 45,168 45,168    
Buildings and leasehold improvements 60,974 59,807    
Equipment 351,099 341,129    
Construction in progress 19,372 11,694    
Accumulated depreciation and amortization (302,244) (281,069)    
Property, plant and equipment, net 174,369 176,728    
Accrued Compensation and Benefits        
Accrued Vacation 9,258 9,404    
Others 9,339 16,676    
Accrued Compensation and Benefits 18,597 26,080    
Cash and Cash Equivalents [Member]
       
Cash equivalents:        
FDIC insured certificates of deposit 4,061 2,870    
Short-term Investments [Member]
       
Cash equivalents:        
FDIC insured certificates of deposit $ 34,754 $ 36,740