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PENSION PLAN (Details 9) | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Defined Benefit Plan [Abstract] |  |
Weighted average discount rate used to determine the accrued benefit obligations | 3.90% | 3.40%
Discount rate used to determine the net pension expense | 3.40% | 3.80%
Expected long-term rate on plan assets | 6.50% | 6.50%

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