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PENSION PLAN (Details 8) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Defined Benefit Plan [Abstract]      
Projected benefit obligation $ 2,985 $ 2,628 $ 2,578
Fair value of plan assets 2,702 2,456 $ 2,515
Accrued obligation (long term) $ 283 $ 172