PENSION PLAN - Weighted Average Assumptions and Net Periodic Pension Cost (Details) - USD ($) $ in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
May 31, 2014 |
|
| Weighted average assumptions used to determine the benefit obligation | ||||
| Discount rate | 4.05% | 4.30% | 3.90% | 4.46% |
| Components of net periodic pension cost | ||||
| Service cost | $ 0 | $ 0 | $ 346 | |
| Interest cost | 367 | 315 | 306 | |
| Expected return on plan assets | (330) | (316) | (319) | |
| Amortization of prior service costs | 0 | 0 | 0 | |
| Amortization of net actuarial loss | 236 | 257 | 136 | |
| Net periodic pension cost | $ 273 | $ 256 | $ 469 | |
| Weighted average assumptions used to determine net periodic pension cost | ||||
| Discount rate | 4.30% | 3.90% | 4.86% | |
| Expected long-term rate of return on plan assets | 6.75% | 6.75% | 7.50% | |