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Employee Benefit Plans (Benefits Expected to be Paid for Defined Benefit Plans) (Details)
$ in Thousands
Dec. 31, 2020
USD ($)
Pension Benefits  
Combined benefits expected to be paid for all Company defined benefit plans  
2019 $ 1,014
2020 259
2021 207
2022 207
2023 193
2024-2028 4
Expected Postretirement Benefit Payout  
Combined benefits expected to be paid for all Company defined benefit plans  
2019 1,310
2020 1,328
2021 1,324
2022 1,316
2023 1,328
2024-2028 $ 6,577