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Other Intangibles - Estimated Future Amortization Expense (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Amortization Expense    
2021 $ 4,072  
2022 5,027  
2023 4,827  
2024 4,241  
2025 3,526  
After 2025 5,925  
Total core deposit intangibles $ 27,618 $ 28,975