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Investments in Marketable Securities Available-for sale
 12 Months Ended
Dec. 31, 2011
Investments, Debt and Equity Securities [Abstract]  
Marketable Securities [Text Block]
Note 3. Investments in Marketable Securities Available-for sale

 

Following is a summary of marketable securities as of December 31, 2010 and 2011:

 

    December 31, 2010  
    Aggregate     Gross
Unrealized		     Gross
Unrealized		     Aggregate
Market		  
    Cost     Gains     Losses     Value  
    (in thousands)  
Time deposit with original maturities more than three months   $ 150       21       -       171  
Open-ended bond fund     7,995       466       -       8,461  
Total   $ 8,145       487       -       8,632  

 

    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  
Open-ended bond fund     -       -       -       -  
Total   $ 150       15       -       165  

 

The Company’s portfolio of available for sale marketable securities by contractual maturity or the expected holding period as of December 31, 2010 and 2011 is due in one year or less.

 

Information on sales of available for sale marketable securities for the years ended December 31, 2009, 2010 and 2011 is summarized below.

 

Period   Proceeds
from sales		     Gross
realized gains		     Gross
realized losses		  
    (in thousands)  
                   
Year ended December 31, 2009   $ 39,263       179       (266 )
Year ended December 31, 2010   $ 33,443       326       (30 )
Year ended December 31, 2011   $ 25,834       420       (70 )