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Financing Arrangements - Aggregate Amount of Maturities for Debt (Details)
$ in Thousands
Sep. 30, 2019
USD ($)
Debt Disclosure [Abstract]  
Remainder of 2019 $ 2,387
2020 9,653
2021 9,825
2022 10,003
2023 7,546
2024 6,680
Thereafter 422,400
Long-term Debt, Gross $ 468,494