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INCOME TAXES (Details 3) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Deferred Tax Benefit [Line Items]    
Non-current deferred income tax benefits $ 1,277 $ 750
Non-current deferred income tax liabilities (3,724) (2,069)
Net deferred income tax liabilities $ (2,447) $ (1,319)