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Employee Benefit Plans (Estimated Future Contributions and Benefit Payments, Which Reflect Expected Future Service) (Details)
$ in Thousands
Dec. 31, 2019
USD ($)
Expected Employer Contributions  
2020
Expected Benefit Payments  
2020 182
2021 63
2022 125
2023 64
2024 177
2025-2029 $ 2,940