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SHARE-BASED PAYMENT (Tables) (Phantom Shares [Member])
12 Months Ended
Dec. 31, 2012
Phantom Shares [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Liability Balance
    December 31,  
    2011     2012  
                 
Phantom share-based payment award   $ 3,684     $ -