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Other Intangible Assets - Summary of Amortization Expense (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule    
2020 $ 2,243  
2021 8,893  
2022 8,657  
2023 6,651  
2024 6,489  
Thereafter 43,193  
Total amortization expense $ 76,126 $ 85,215