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Debt - Future Payments (Details)
$ in Thousands
Mar. 31, 2019
USD ($)
Debt Disclosure [Abstract]  
Remainder of Year Ending December 31, 2019 $ 0
Year Ending December 31, 2020 0
Year Ending December 31, 2021 0
Year Ending December 31, 2022 320,000
Year Ending December 31, 2023 0
Thereafter 0
Total $ 320,000