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Goodwill and Other Intangible Assets - Estimated Future Amortization Expense Related to Intangible Assets Subject to Amortization (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Estimated amortization expense related to amortized intangible assets    
2021 $ 5,216  
2022 5,129  
2023 4,466  
2024 3,510  
2025 2,218  
Thereafter 50,060  
Intangible assets subject to amortization, Net Carrying Value $ 70,599 $ 93,737