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Investment securities, including securities measured at fair value
 12 Months Ended
Dec. 31, 2011
Investments, All Other Investments [Abstract]  
Financial Instruments Disclosure [Text Block]
Note 9. Investment securities, including securities measured at fair value

 

(a) Investments in Non-marketable Equity Securities

 

Following is a summary of such investments which are accounted for using the cost method as of December 31, 2010 and 2011:

 

    December 31,  
    2010     2011  
    (in thousands)  
             
Chi Lin Optoelectronics Co., Ltd.   $ 1,057       625  
Chi Lin Technology Co. Ltd.     -       432  
Jetronics International Corp.     1,600       1,600  
C Company     8,962       8,962  
Spatial Photonics, Inc.     6,500       6,500  
eTurboTouch Technology Inc.     715       715  
Oculon Optoelectronics Inc.     309       309  
Shinyoptics Corp.     283       283  
    $ 19,426       19,426  

  

On July 25, 2011, Chi Lin Technology Co. Ltd. was split into Chi Lin Optoelectronics Co., Ltd. and Chi Lin Technology Co. Ltd.. Chi Lin Technology Co. Ltd. was renamed as Chi Lin Optoelectronics Co., Ltd..

 

As of December 31, 2011, it was not practicable for management to estimate the fair values of the Company’s investments in equity listed above due to the lack of quoted market price and the inability to estimate the fair value without incurring excessive costs. However, management identified no events or changes in circumstance that may significantly affect the Company’s ability on recovering the carrying values of these investments.

 

(b) Investments in corporate convertible bonds

 

On August 10, 2010, the Company purchased 1,620,000 units of the corporate convertible bonds issued by Chang Wah Electromaterials Inc. (“CWE”). The bonds have embedded conversion options which the Company can require CWE to settle the bonds during the period from September 11, 2010 to July 31, 2015 by converting each unit of bond into 0.6020 common shares of CWE. The embedded conversion options were separated from the corporate bonds and accounted for separately. The corporate bonds were recorded as available-for sale security and the separated convertible option was recorded as other assets in the accompanying consolidated balance sheets.

 

Following is a summary of the corporate bonds as of December 31, 2010 and 2011:

 

    December 31, 2010  
    Aggregate     Gross
unrealized		     Discount     Aggregate 
market		  
    Cost     gains     amortization     Value  
    (in thousands)  
Corporate bond-available for sale   $ 4,365       779       52       5,196  

 

    December 31, 2011  
    Aggregate     Gross
unrealized		     Discount     Aggregate 
market		  
    Cost     gains     amortization     Value  
    (in thousands)  
Corporate bond-available for sale   $ 4,365       596       119       5,080  

  

Following is a summary of the separated conversion options as of December 31, 2010 and 2011:

 

    December 31, 2010  
    Aggregate     Gross unrealized     Fair  
    Cost     gains     losses     value  
    (in thousands)  
Conversion option   $ 684       320       -       1,004  

 

    December 31, 2011  
    Aggregate     Gross unrealized     Fair  
    Cost     gains     losses     value  
    (in thousands)  
Conversion option   $ 684       -       510       174