PENSION AND POST RETIREMENT BENEFIT PLANS (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2018 |
Sep. 30, 2017 |
Sep. 30, 2018 |
Sep. 30, 2017 |
|
| Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] | ||||
| Interest and service cost | $ 1,995 | $ 2,138 | $ 5,985 | $ 6,414 |
| Expected return on plan assets | (3,443) | (3,342) | (10,329) | (10,026) |
| Amortization of net loss | 826 | 830 | 2,478 | 2,490 |
| Net periodic benefit | $ (622) | $ (374) | $ (1,866) | $ (1,122) |
| X | ||||||||||
- Definition Defined Benefit Plan Interest and Service Cost No definition available.
|
| X | ||||||||||
- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Amount of net periodic benefit cost (credit) for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- References No definition available.
|