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Pension Plans (Expected Future Benefit Payments) (Details) - Pension Plan [Member] - Foreign Plan [Member]
$ in Thousands
Sep. 30, 2017
USD ($)
Defined Benefit Plan Disclosure [Line Items]  
2017 $ 2,472
2018 2,627
2019 3,054
2020 3,315
2021 3,954
2022 to 2026 $ 22,648