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Segment, Product and Geographic Information (Tables)
12 Months Ended
Dec. 31, 2012
Segment Reporting [Abstract]  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Year Ended December 31, 2010  
    Driver IC    

Non-driver

products

   

Consolidated

Total

 
    (in thousands)  
                   
Segment revenues   $ 590,057       52,635       642,692  
                         
Segment operating income (loss)   $ 54,815       (19,457 )     35,358  
Non operating loss, net                     (64 )
Consolidated earnings before income taxes                   $ 35,294  
Significant noncash item:                        
Share based compensation   $ 5,007       1,304       6,311  
Depreciation and amortization   $ 10,074       3,552       13,626  

 

    Year Ended December 31, 2011  
    Driver IC    

Non-driver

products

   

Consolidated

Total

 
    (in thousands)  
                   
Segment revenues   $ 552,456       80,565       633,021  
Segment operating income (loss)   $ 38,401       (21,793 )     16,608  
Non operating income, net                     200  
Consolidated earnings before income taxes                   $ 16,808  
Significant noncash item:                        
Share Based Compensation   $ 2,820       1,370       4,190  
Depreciation and amortization   $ 7,849       4,946       12,795  

 

    Year Ended December 31, 2012  
    Driver IC    

Non-driver

products

   

Consolidated

Total

 
    (in thousands)  
                   
Segment revenues   $ 634,111       103,144       737,255  
Segment operating income (loss)   $ 83,883       (16,823 )     67,060  
Non operating loss, net                     (1,174 )
Consolidated earnings before income taxes                   $ 65,886  
Significant noncash item:                        
Share Based Compensation   $ 1,612       324       1,936  
Depreciation and amortization   $ 8,881       4,418       13,299  
Schedule Of Revenues By Major Productlines By Reporting Segments [Table Text Block]

Revenues from the Company’s major product lines are summarized as follow:

 

  Year Ended December 31, 
  2010  2011  2012 
  (in thousands) 
          
Display drivers for large-size applications $366,492   270,372   305,247 
Display drivers for mobile handsets applications  119,623   169,248   177,175 
Display drivers for consumer electronics applications  103,942   112,836   151,689 
Others  52,635   80,565   103,144 
  $642,692   633,021   737,255
Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]

The following tables summarize information pertaining to the Company’s revenues from customers in different geographic region (based on customer’s headquarter location):

 

  Year Ended December 31, 
  2010  2011  2012 
  (in thousands) 
          
Taiwan $492,687   395,228   356,793 
China  112,845   209,216   334,433 
Other Asia Pacific (Korea and Japan)  37,121   27,738   43,245 
Europe (Europe and America)  39   839   2,784 
  $642,692   633,021   737,255
Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country [Table Text Block]

The carrying values of the Company’s tangible long-lived assets are located in the following countries:

 

  December 31, 
  2011  2012 
  (in thousands) 
       
Taiwan $56,185   51,519 
China  822   744 
U.S.  132   330 
Korea  11   16 
  $57,150   52,609
Schedule Of Revenue From Major Customers [Table Text Block]

Revenues from significant customers, those representing 10% or more of total revenue for the respective periods, are summarized as follows:

 

    Year Ended December 31,  
    2010     2011     2012  
    (in thousands)  
                   
CMO/CMI and its affiliates, a related party   $ 335,595       258,156       251,974  
Customer A and its affiliates     1,516       35,908       86,069  
    $ 337,111       294,064       338,043  
Schedule Of Accounts Receivable From Major Customers [Table Text Block]

Accounts receivable from significant customers, those representing 10% or more of total accounts receivable for the respective periods, is summarized as follows:

 

  December 31, 
  2011  2012 
  (in thousands) 
       
CMI and its affiliates, a related party $79,916   73,432 
Customer A and its affiliates  18,684   29,198 
  $98,600   102,630