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Other Accrued Expenses and Other Current Liabilities
 12 Months Ended
Dec. 31, 2011
Payables and Accruals [Abstract]  
Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block]
Note 10. Other Accrued Expenses and Other Current Liabilities

 

    December 31,  
    2010     2011  
    (in thousands)  
             
Accrued mask, mold fees and other expenses for RD   $ 7,080       8,211  
Payable for purchases of equipment     739       2,276  
Accrued software maintenance     1,700       1,830  
Accrued payroll and related expenses     3,356       3,837  
Accrued professional service fee     1,438       1,210  
Accrued warranty costs     679       78  
Accrued insurance, welfare expenses, etc.     8,613       5,721  
    $ 23,605       23,163  

 

The movement in accrued warranty costs for the years ended December 31, 2009, 2010 and 2011 is as follows:

 

Period   Balance at
beginning
of year		     Additions
(reversal)
charged to
expense		    
Amounts 
utilized		     Balance at
end of
year		  
    (in thousands)  
Year ended December 31, 2009   $ 249       2,920       (2,490 )     679  
Year ended December 31, 2010   $ 679       3,772       (3,772 )     679  
Year ended December 31, 2011   $ 679       (321 )     (280 )     78