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BENEFIT PLANS, Estimated Future Benefit Payments (Details)
$ in Thousands
Dec. 31, 2016
USD ($)
Pension Benefits [Member]  
Estimated Future Benefit Payments [Abstract]  
2017 $ 7,225
2018 7,320
2019 7,504
2020 7,752
2021 7,914
2022-2026 41,823
Post-retirement Benefits [Member]  
Estimated Future Benefit Payments [Abstract]  
2017 145
2018 143
2019 141
2020 138
2021 136
2022-2026 $ 636