EMPLOYEE BENEFITS (Details 2) - USD ($) $ in Thousands |
Dec. 31, 2015 |
Dec. 31, 2014 |
|---|---|---|
| Defined Benefit Plan, Plans with Benefit Obligations in Excess of Plan Assets [Abstract] | ||
| Projected benefit obligations | $ 226,012 | $ 228,138 |
| Fair value of plan assets | 170,032 | 176,367 |
| Excess of projected benefit obligations over plan assets | 55,980 | 51,771 |
| Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets [Abstract] | ||
| Accumulated benefit obligation | 222,173 | 223,921 |
| Fair value of plan assets | 170,032 | 175,766 |
| Excess of accumulated benefit obligations over plan assets | $ 52,141 | $ 48,155 |