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EMPLOYEE RETIREMENT PLANS - Schedule of Projected benefit payments for the plans (Details)
$ in Thousands
Dec. 31, 2019
USD ($)
Defined Benefit Pension Plan [Member]  
Defined Benefit Plan Disclosure [Line Items]  
2020 $ 2,786
2021 2,802
2022 2,785
2023 2,833
2024 2,847
2025 - 2029 14,245
Supplemental Pension Plan [Member]  
Defined Benefit Plan Disclosure [Line Items]  
2020 453
2021 489
2022 538
2023 699
2024 767
2025 - 2029 $ 5,196