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Goodwill And Intangible Assets (Summary of Core Deposit, Customer Relationship and Other Intangibles) (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Finite Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 69,722 $ 69,722
Accumulated Amortization 23,826 12,757
Net Carrying Value 45,896 56,965
Core Deposits [Member]    
Finite Lived Intangible Assets [Line Items]    
Gross Carrying Amount 51,402 51,402
Accumulated Amortization 16,419 8,217
Net Carrying Value 34,983 43,185
Net Carrying Value 35,000 43,200
Customer Relationships Intangible [Member]    
Finite Lived Intangible Assets [Line Items]    
Gross Carrying Amount 17,753 17,753
Accumulated Amortization 7,124 4,540
Net Carrying Value 10,629 13,213
Net Carrying Value 10,600 13,200
Other Intangible Assets [Member]    
Finite Lived Intangible Assets [Line Items]    
Gross Carrying Amount 567 567
Accumulated Amortization 283 0
Net Carrying Value $ 284 $ 567