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PENSION PLAN (Details 4) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss):    
Unrecognized prior service cost $ 88 $ 96
Unrecognized net actuarial loss 1,508 1,348
Unrecognized transitional obligation 46 58
Deferred income taxes (435) (404)
Total $ 1,207 $ 1,098