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RETIREMENT PLANS - Expected future service (Details) $ in Thousands | Dec. 31, 2017 USD ($)
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Pension Plans |
Retirement plans |
Expected contribution in 2018 | $ 1,500
Estimated Pension Benefits |
2018 | 4,088
2019 | 4,772
2020 | 4,190
2021 | 4,380
2022 | 4,915
2022 - 2027 | 22,938
Total | 45,283
Postretirement Benefits |
Estimated Pension Benefits |
2018 | 399
2019 | 362
2020 | 327
2021 | 297
2022 | 322
2022 - 2027 | 1,807
Total | $ 3,514

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