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Goodwill and Intangible Assets - Future Amortization (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Estimated annual amortization expense        
2020 (remaining) $ 12,045   $ 12,045  
2021 41,730   41,730  
2022 40,893   40,893  
2023 40,791   40,791  
2024 40,791   40,791  
Thereafter 393,828   393,828  
Total 570,078   570,078  
Amortization of intangibles $ 10,973 $ 11,754 $ 32,866 $ 35,136