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Investments in Marketable Securities Available-for sale
 12 Months Ended
Dec. 31, 2012
Investments, Debt and Equity Securities [Abstract]  
Marketable Securities [Text Block]
Note 4. Investments in Marketable Securities Available-for sale

 

Following is a summary of marketable securities as of December 31, 2011 and 2012:

 

    December 31, 2011  
    Aggregate     Gross
Unrealized		     Gross
Unrealized		     Aggregate
Market		  
    Cost     Gains     Losses     Value  
    (in thousands)  
Time deposit with original maturities more than three months   $ 150       15       -       165  

 

    December 31, 2012  
    Aggregate     Gross
Unrealized		     Gross
Unrealized		     Aggregate
Market		  
    Cost     Gains     Losses     Value  
    (in thousands)  
Time deposit with original maturities more than three months   $ 150       22       -       172  

 

The Company’s portfolio of available for sale marketable securities by contractual maturity or the expected holding period as of December 31, 2011 and 2012 is due in one year or less.

 

Information on sales of available for sale marketable securities for the years ended December 31, 2010, 2011 and 2012 is summarized below.

 

Period  

Proceeds
from sales

    

Gross

realized gains

    

Gross

realized losses

  
    (in thousands)  
                   
Year 2010   $ 33,443       326       (30 )
Year 2011   $ 25,834       420       (70 )
Year 2012   $ 19,612       35       (32 )