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Other Income Net
 12 Months Ended
Dec. 31, 2011
Other Income, Net [Abstract]  
OTHER INCOME, NET

13.  OTHER INCOME, NET

The major changes in the components of the other income, net for the years ended December 31 were as follows (in thousands):

 

                         
    2011     2010     2009  

Interest income

   $ 259     $ 442     $ 717  

Unrealized gain on trading securities

     —       970       1,268  

Unrealized loss on auction rate securities rights

     —       (962 )      (964 ) 

Credit gains (losses) on available for sale securities

     302       (146 )      (464 ) 

Foreign currency (losses) gains, net

     (326 )      (158 )      35  

Gain on disposal of equipment

     22       249       30  

Other

     89       102       60  
   

 

 

    

 

 

    

 

 

  
    $ 346     $ 497     $ 682