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Goodwill and Other Intangibles (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Amortized intangible assets - core deposits [Abstract]    
Gross Carrying Amount $ 11,916 $ 11,916
Accumulated Amortization 7,853 7,610
Unamortized intangible assets - goodwill [Abstract]    
Gross Carrying Amount 28,300 $ 28,300
Summary of estimated core deposit intangible amortization [Abstract]    
Nine months ending December 31, 2021 727  
2022 785  
2023 547  
2024 516  
2025 487  
2026 and thereafter 1,001  
Total $ 4,063