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Note 3. Balance Sheet Components
 3 Months Ended
Mar. 31, 2013
Supplemental Balance Sheet Disclosures [Text Block]
3.  Balance Sheet Components

The Company’s cash balances are held in numerous locations throughout the world, with the majority in the United States. As of March 31, 2013, the Company had cash, cash equivalents, and short-term investments of $298.6 million held within the United States and $10.5 million held outside of the United States. As of December 30, 2012, the Company had cash, cash equivalents, and short term investments of $303.1 million held within the United States and $10.8 million held outside of the United States.

All securities other than the Federal Deposit Insurance Corporation (FDIC) insured certificates of deposit were designated as available-for-sale. FDIC insured certificates of deposit are held to maturity. Gross unrealized gains and losses on cash equivalents and short term investments were not material as of March 31, 2013 and December 30, 2012. Gross realized gains and losses on cash equivalents and short term investments were not material for the three months ended March 31, 2013 and March 25, 2012.

   
March 31, 2013
   
December 30, 2012
 
   
(in thousands)
 
             
Cash and cash equivalents
           
Cash
  $ 253,305     $ 258,126  
Cash equivalents:
               
Money market funds
    4,359       1,181  
FDIC insured certificates of deposit
    4,068       2,870  
Cash and cash equivalents
  $ 261,732     $ 262,177  
                 
Short-term investments
               
Commercial paper
  $ 14,984     $ 14,980  
FDIC insured certificates of deposit
    32,414       36,740  
Short-term investments
  $ 47,398     $ 51,720  
                 
Account receivable, net
               
Accounts receivable, gross
  $ 106,829     $ 107,127  
Allowance for doubtful accounts
    (227 )     (263 )
Account receivable, net
  $ 106,602     $ 106,864  
                 
Inventories
               
Raw materials
  $ 8,767     $ 8,647  
Work-in-process
    139,355       149,722  
Finished goods
    31,526       23,823  
Inventories
  $ 179,648     $ 182,192  
                 
Property, plant and equipment, net
               
Land
  $ 45,168     $ 45,168  
Buildings and leasehold improvements
    60,975       59,807  
Equipment
    347,258       341,129  
Construction in progress
    9,604       11,694  
Accumulated depreciation and amortization
    (292,182 )     (281,069 )
Property, plant and equipment, net
  $ 170,823     $ 176,728  
                 
Accrued Compensation and Benefits
               
Accrued Vacation
  $ 8,183     $ 9,404  
Others
    11,810       16,676  
Accrued Compensation and Benefits
  $ 19,993     $ 26,080