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COMMITMENTS AND CONTINGENT LIABILITIES (Operating lease commitments) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
COMMITMENTS AND CONTINGENT LIABILITIES [Abstract]      
2013 $ 9,830    
2014 8,759    
2015 7,662    
2016 6,448    
2017 5,803    
2018 and thereafter 56,078    
Total 94,580    
Lease expenses, net $ 11,137 $ 10,255 $ 5,772