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COMMITMENTS AND CONTINGENCIES (Details 1) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Leases [Abstract]      
Remaining lease terms 7 years    
Rent expense $ 2,900 $ 3,000 $ 3,300
2018 3,103    
2019 2,076    
2020 1,211    
2021 983    
2022 795    
Thereafter 726    
Total $ 8,894