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Goodwill and Other Intangible Assets - Amortization expense for Future Years (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Goodwill and Other Intangible Assets    
2021 $ 4,415  
2022 4,351  
2023 4,351  
2024 4,098  
2025 2,959  
Thereafter 5,745  
Total $ 25,919 $ 18,391