PENSION PLAN, Plan's funded status (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| CHANGES IN BENEFIT OBLIGATIONS [Roll Forward] | |||
| Benefit obligation-beginning of year | $ 24,299 | $ 20,314 | $ 23,169 |
| Service cost | 28 | 23 | 37 |
| Interest cost | 884 | 892 | 790 |
| Actuarial (gain) loss | (782) | 4,149 | (2,614) |
| Benefits paid | (1,088) | (1,079) | (1,068) |
| Benefit obligation at end of year | 23,341 | 24,299 | 20,314 |
| CHANGE IN PLAN ASSETS [Roll Forward] | |||
| Fair value of plan assets-beginning of year | 19,000 | 18,792 | 16,268 |
| Actual return on plan assets | (120) | 1,017 | 2,919 |
| Employer contributions | 0 | 270 | 673 |
| Benefits paid | (1,088) | (1,079) | (1,068) |
| Fair value of plan assets-end of year | 17,792 | 19,000 | 18,792 |
| BENEFIT OBLIGATION IN EXCESS OF FAIR VALUE FUNDED STATUS: | $ (5,549) | $ (5,299) | $ (1,522) |