EMPLOYEE BENEFIT PLANS - Fair Value Hierarchy (Details) - USD ($)
$ in Thousands |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Assets at fair value |
$ 14,223
|
$ 13,906
|
$ 14,258
|
| Level 1 |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Assets at fair value |
14,223
|
13,906
|
|
| Cash and cash equivalents |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Assets at fair value |
1,218
|
1,606
|
|
| Cash and cash equivalents | Level 1 |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Assets at fair value |
1,218
|
1,606
|
|
| Mutual funds - taxable fixed income |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Assets at fair value |
1,467
|
1,732
|
|
| Mutual funds - taxable fixed income | Level 1 |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Assets at fair value |
1,467
|
1,732
|
|
| Mutual funds - domestic equity |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Assets at fair value |
8,150
|
8,372
|
|
| Mutual funds - domestic equity | Level 1 |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Assets at fair value |
8,150
|
8,372
|
|
| Mutual funds - international equity |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Assets at fair value |
631
|
2,196
|
|
| Mutual funds - international equity | Level 1 |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Assets at fair value |
631
|
$ 2,196
|
|
| Inflation Hedges/Real Assets |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Assets at fair value |
715
|
|
|
| Inflation Hedges/Real Assets | Level 1 |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Assets at fair value |
715
|
|
|
| Hedged Strategies |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Assets at fair value |
2,042
|
|
|
| Hedged Strategies | Level 1 |
|
|
|
| Defined Benefit Plan Disclosure [Line Items] |
|
|
|
| Assets at fair value |
$ 2,042
|
|
|