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SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Redeemable Noncontrolling Interest [Line Items]      
January 1, 2016 $ 5,745 $ 5,745  
Net income attributable to redeemable non-controlling interest 4,520 639 $ 425
Change in redeemable non-controlling interest to redemption value 2,262    
Increase in redeemable non-controlling interest as part of acquisitions 15,779    
Increase in redeemable non-controlling interest due to change in ownership in subsidiaries 292    
Dividend in redeemable non-controlling interest (29)    
Foreign currency translation adjustments (309)    
December 31, 2016 $ 25,998 $ 5,745 $ 5,745