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SIGNIFICANT ACCOUNTING POLICIES (Concentrations of credit risk) (Details) (Allowance for Doubtful Accounts [Member], USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Allowance for Doubtful Accounts [Member]
   
Valuation and Qualifying Accounts Disclosure [Line Items]    
Balance at the beginning of the year $ 739 $ 331
Charges to expenses 601 468
Write off (227) (51)
Foreign currency translation adjustments 14 (9)
Balance at end of the year $ 1,127 $ 739