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DIVIDENDS (Details) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2012
Mar. 20, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
DIVIDENDS [Abstract]          
Number of time cash dividend declared by board   1      
Dividends declared per common share (in dollars per share) $ 0 $ 1.00 $ 0 $ 1.00 $ 0