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Goodwill and Intangible Assets - Future amortization expense (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]      
2021 $ 56,269    
2022 42,211    
2023 40,014    
2024 34,985    
2025 19,919    
2026 and thereafter 105,617    
Finite-Lived Intangible Assets, Net $ 299,015 $ 325,621 $ 323,426