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EMPLOYEE BENEFIT PLANS (Expected Benefit Payments) (Details)
$ in Thousands
Dec. 31, 2018
USD ($)
Pension Benefits [Member]  
Defined Benefit Plan Disclosure [Line Items]  
2019 $ 11,155
2020 13,039
2021 16,570
2022 19,991
2023 19,228
Year 2023- 2027 136,559
Post Retirement Medical Plan [Member]  
Defined Benefit Plan Disclosure [Line Items]  
2019 1,342
2020 1,605
2021 1,726
2022 1,761
2023 1,746
Year 2023- 2027 $ 9,121