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Restructuring Charges (Narrative) (Details)
 1 Months Ended 6 Months Ended 12 Months Ended
Jul. 17, 2020
Branch
Oct. 31, 2020
Branch
Jun. 30, 2021
USD ($)
Jun. 30, 2020
USD ($)
Dec. 31, 2020
USD ($)
Restructuring Cost And Reserve [Line Items]          
Number of bank branch closure | Branch 6        
Percentage of branch network 10.00%        
Percentage of branch network impact 6.00%        
Number of additional branches planned to close | Branch   1      
Pre tax expense related branch closures         $ 1,700,000
Total costs result in future cash expenditures         800,000
Anticipates annual expense savings branch closures         2,700,000
Restructuring charges     $ 0 $ 0  
Other Assets [Member]          
Restructuring Cost And Reserve [Line Items]          
Reclassification of long-lived assets to held for sale     $ 1,100,000   0
Employee Severance [Member]          
Restructuring Cost And Reserve [Line Items]          
Pre tax expense related branch closures         200,000
Lease Termination Costs [Member]          
Restructuring Cost And Reserve [Line Items]          
Pre tax expense related branch closures         500,000
Valuation Adjustments On Branch Facilities [Member]          
Restructuring Cost And Reserve [Line Items]          
Pre tax expense related branch closures         $ 1,000,000.0