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DERIVATIVE FINANCIAL INSTRUMENTS (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Derivative Instruments, Gain (Loss) [Line Items]      
Ineffective portion of the change in fair value of a cash flow hedge $ 10 $ 4 $ 29
Exposure to loss due to credit risk by counterparties 10    
Notional amount 2,794    
Unrealized losses, net of tax, to be reclassified in next 12 months 10    
Unrealized gain (loss) from hedge derivatives 10    
Cost of services [Member]      
Derivative Instruments, Gain (Loss) [Line Items]      
Increase (decrease) in gains recognized in other comprehensive income (loss) on derivative (effective portion) (3)    
Research And Development Sales [Member]      
Derivative Instruments, Gain (Loss) [Line Items]      
Increase (decrease) in gains recognized in other comprehensive income (loss) on derivative (effective portion) (73)    
Sales and marketing [Member]      
Derivative Instruments, Gain (Loss) [Line Items]      
Increase (decrease) in gains recognized in other comprehensive income (loss) on derivative (effective portion) (27)    
General and Administrative Expense [Member]      
Derivative Instruments, Gain (Loss) [Line Items]      
Increase (decrease) in gains recognized in other comprehensive income (loss) on derivative (effective portion) $ (3)