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Goodwill and Intangible Assets - Total Estimated Future Amortization Expense (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Intangible Assets    
2020 $ 81,419  
2021 79,785  
2022 77,170  
2023 73,888  
2024 68,359  
Thereafter 75,563  
Net $ 456,184 $ 27,263