EMPLOYEE BENEFIT PLANS Table 4 - Amounts Recorded as a Component of Accumulated Other Comprehensive (Loss) (Details) - USD ($) $ in Thousands |
Dec. 31, 2017 |
Dec. 31, 2016 |
|---|---|---|
| Pension Plans (The Pension Plan, Excess Pension Plan and SERP) [Member] | ||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Unrecognized actuarial loss (b) | $ (31,178) | $ (28,427) |
| Prior service credit (b) | 16,604 | 18,663 |
| Deferred tax asset (liability) | 219 | 57 |
| Accumulated other comprehensive income (loss), net of tax | (14,355) | (9,707) |
| Other Postretirement Benefits Plan [Member] | ||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Unrecognized actuarial loss (b) | (4,154) | (3,755) |
| Prior service credit (b) | 9,464 | 10,609 |
| Deferred tax asset (liability) | 25 | 3 |
| Accumulated other comprehensive income (loss), net of tax | $ 5,335 | $ 6,857 |