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EMPLOYEE BENEFIT PLANS (Details 5) - Pension Plans, Defined Benefit [Member] - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
OTHER CHANGES IN PLAN ASSETS AND BENEFIT OBLIGATIONS RECOGNIZED IN OTHER COMPREHENSIVE LOSS |  |  |
Net (gain) loss | $ (822) | $ 6,505 | $ 1,221
Recognized loss | (1,454) | (1,333) | (1,386)
Total recognized in other comprehensive loss before tax effect | (2,276) | 5,172 | (165)
Total recognized in net benefit cost and other comprehensive loss before tax effect | $ (553) | $ 7,128 | $ 1,989

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