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Debt - Maturities (Details)
$ in Thousands
Dec. 31, 2019
USD ($)
Debt Disclosure [Abstract]  
Debt maturing, 2020 $ 488,234
Debt maturing, 2021 444,715
Debt maturing, 2022 130,812
Debt maturing, 2023 6,639
Debt maturing, 2024 $ 3,646