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TAX (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Tax for the year      
Current tax for the year $ 1,000 $ 1,200 $ 1,300
Adjustments related to previous years (100) (300) (200)
Adjustment of deferred tax asset (100) (100) (100)
Total $ 777 $ 760 $ 1,041