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Pension and Postretirement Benefits - Payments and Receipts Reflecting Expected Future Service (Details)
$ in Thousands
Dec. 31, 2019
USD ($)
Foreign Pension Plans | Funded Plans  
Expected future service expected to be paid  
2020 $ 345
2021 355
2022 398
2023 438
2024 440
2025-2029 2,268
Foreign Pension Plans | Unfunded Pension Plans  
Expected future service expected to be paid  
2020 177
2021 177
2022 176
2023 176
2024 175
2025-2029 860
Pension Plans | Domestic Plans | Funded Plans  
Expected future service expected to be paid  
2020 1,441
2021 928
2022 1,002
2023 996
2024 962
2025-2029 4,759
Pension Plans | Domestic Plans | Unfunded Pension Plans  
Expected future service expected to be paid  
2020 714
2021 702
2022 687
2023 672
2024 656
2025-2029 2,985
Postretirement Benefit Plans | Domestic Plans  
Expected future service expected to be paid  
2020 1,035
2021 985
2022 956
2023 928
2024 893
2025-2029 $ 3,768