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Pension and Other Post Retirement Benefit Plans - Schedule of Expected Future Benefit Payments (Details)
$ in Thousands
Dec. 31, 2018
USD ($)
Retirement Benefits [Abstract]  
2019 $ 5,583
2020 5,549
2021 5,429
2022 5,363
2023 5,269
After 2023 24,586
Total $ 51,779