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MARKETABLE SECURITIES (Details) (USD $)
1 Months Ended 12 Months Ended
Jan. 31, 2011
Dec. 31, 2011
Dec. 31, 2010
Schedule of Available-for-sale Securities [Line Items]      
Marketable securities   $ 0 $ 3,000,000
Marketable securities sale proceeds 3,000,000    
Realized gains (losses)   0  
Realized losses     $ 2,800,000