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Goodwill and Intangible Assets - Schedule of Finite-Lived Intangible Assets Estimated Future Amortization Expense (Details)
$ in Thousands
Sep. 30, 2019
USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]  
2019 (remaining three months) $ 135
2020 540
2021 540
2022 540
2023 540
2024 $ 540