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Goodwill and Intangible Assets - Amortization (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Estimated amortization expense    
2020 (April 1 - December 31) $ 20,467  
2021 27,185  
2022 26,123  
2023 24,913  
2024 17,912  
2025 12,042  
Thereafter 53,949  
Total estimated amortization expense $ 182,591 $ 189,413