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4. INVESTMENTS IN MARKETABLE SECURITIES (Tables)
9 Months Ended
Sep. 30, 2012
Gain (Loss) on Investments [Table Text Block]
   
Three months ended
 September 30,
   
Nine months ended
 September 30,
 
Description
 
2012
   
2011
   
2012
   
2011
 
Net realized (loss) gain from sales of securities
  $ (12,000 )   $ 36,000     $ 55,000     $ 115,000  
Unrealized net gain (loss) in trading securities
    57,000       (209,000 )     87,000       (256,000 )
Total net gain (loss) from investments in marketable securities
  $ 45,000     $ (173,000 )   $ 142,000     $ (141,000 )