PENSION PLANS. (Details 2) $ in Thousands |
Dec. 31, 2017
USD ($)
|
|---|---|
| Retirement Plan [Member] | |
| 2018 | $ 730 |
| 2019 | 740 |
| 2020 | 780 |
| 2021 | 790 |
| 2022 | 830 |
| 2023-27 | 4,820 |
| Total expected benefit payments | 8,690 |
| Postretirement Plan [Member] | |
| 2018 | 240 |
| 2019 | 270 |
| 2020 | 300 |
| 2021 | 340 |
| 2022 | 330 |
| 2023-27 | 2,120 |
| Total expected benefit payments | $ 3,600 |
| X | ||||||||||
- Definition Total expected benefit payments No definition available.
|
| X | ||||||||||
- Definition Amount of benefits for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following latest fiscal year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of benefits for defined benefit plan expected to be paid in next fiscal year following latest fiscal year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of benefits for defined benefit plan expected to be paid in fifth fiscal year following latest fiscal year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of benefits for defined benefit plan expected to be paid in fourth fiscal year following latest fiscal year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of benefits for defined benefit plan expected to be paid in third fiscal year following latest fiscal year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount of benefits for defined benefit plan expected to be paid in second fiscal year following latest fiscal year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|