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Fair Value Measurement (Tables)
12 Months Ended
Dec. 31, 2012
Fair Value Disclosures [Abstract]  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

The following table presents the Company’s financial assets and liabilities that are measured at fair value on a recurring basis which were comprised of the following types of instruments at December 31, 2011 and 2012:

 

  

Fair Value Measurements at

December 31, 2011 Using

 
  Level 1  Level 2  Level 3 
  (in thousands) 
Assets:            
Cash and cash equivalents:            
Time deposits with original maturities less than three months $72,000   -   - 
Marketable securities available-for-sale:            
Time deposit with original maturities more than three months  -   165   - 
Investment securities available-for-sale:            
Corporate straight bonds  -   -   5,080 
Restricted cash and cash equivalents :            
Time deposits with original maturities less than three months  44,000   -   - 
Other assets:            
Embedded conversion option  -   -   174 
Restricted marketable securities:            
Time deposits with original maturities of more than three months  -   1,266   - 
Total $116,000   1,431   5,254 
Liabilities:            
Short-term debt $-   84,200   - 
Total $-   84,200   - 

  

  

Fair Value Measurements at

December 31, 2012 Using

 
  Level 1  Level 2  Level 3 
  (in thousands) 
Assets:            
Cash and cash equivalents:            
Time deposits with original maturities less than three months $45,000   -   - 
Marketable securities available-for-sale:            
Time deposit with original maturities more than three months  -   172   - 
Restricted marketable securities:            
Time deposits with original maturities of more than three months  -   1,273   - 
Total $45,000   1,445   - 
Liabilities:            
Short-term debt $-   73,000   - 
Total $-   73,000   - 
Schedule Of Fair Value Assets And Liabilities Measured On Recurring Basis And Associated Losses [Table Text Block]

The following table presents fair value measurements of assets that are measured at fair value on a nonrecurring basis at December 31, 2012 and the associated losses recognized in 2012 (nil in 2011):

 

  Fair Value Measurements at
reporting Date Using
 
  December
31, 2012
  Level 1  Level 2  Level 3  For the 
Year

Ended
December
31, 2012
Impairment 
loss
 
  (in thousands) 
Assets:              
Investments in Non-marketable Equity Securities- eTurbo Touch Technology Inc. $477   -   -   477   238
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Table Text Block]

The following table summarizes changes in Level 3 assets and liabilities measured at fair value on a recurring basis for the years ended December 31, 2011:

 

  Corporate
straight
bonds
  Derivatives-
Conversion
option
  Total 
  (in thousands) 
Balance at January 1, 2011 $5,196   1,004   6,200 
Total unrealized gains (losses) included in earnings  67   (830)  (763)
Total unrealized losses included in other comprehensive income, net  (183)  -   (183)
Balance at December 31, 2011 $5,080   174   5,254 
The amount of total gains (losses) in 2011 included in earnings attributable to the change in unrealized gains (losses) relating to assets and liabilities still held December 31, 2011 $67   (830)  (763)