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Intangible Assets and Goodwill - Estimated Future Amortization Expense for Intangible Assets (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]    
2020 $ 7,208  
2021 28,834  
2022 28,834  
2023 28,834  
2024 28,834  
Thereafter 28,834  
Total $ 151,378 $ 291,212