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INCOME TAXES (Details 3) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Deferred Tax Benefit [Line Items]    
Non-current deferred income tax benefits $ 750 $ 660
Non-current deferred income tax liabilities (2,069) (703)
Net deferred income tax liabilities $ (1,319) $ (43)