Note 4. Balance Sheet Components (Tables)
6 Months Ended
Jun. 30, 2013
Supplemental Balance Sheet Disclosures [Text Block]  
Schedule of Amounts Recognized in Balance Sheet [Table Text Block]
   

June 30, 2013

   

December 30, 2012

 
   

(in thousands)

 
 
                 

Cash and cash equivalents

               

Cash

  $ 199,414     $ 258,126  

Cash equivalents:

               

Money market funds

    2,060       1,181  

FDIC insured certificates of deposit

    4,061       2,870  

Cash and cash equivalents

  $ 205,535     $ 262,177  
                 

Short-term investments

               

Commercial paper

  $ 14,984     $ 14,980  

Time Deposit

    50,013       -  

FDIC insured certificates of deposit

    34,754       36,740  

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