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Pension and Other Postretirement Benefit Plans Schedule of Expected Benefit Payments (Details)
$ in Thousands
Dec. 31, 2019
USD ($)
Compensation And Retirement Disclosure [Abstract]  
2020 $ 1,310
2021 1,394
2022 1,477
2023 1,518
2024 1,634
Succeeding five years $ 9,988