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Allowance For Credit Losses (Narrative) (Details)
3 Months Ended
Mar. 31, 2022
USD ($)
contract
Mar. 31, 2021
USD ($)
Dec. 31, 2021
USD ($)
Financing Receivable, Impaired [Line Items]      
Threshold period for discontinuance of interest accrual 90 days    
Financing receivable, nonaccrual, interest income $ 0 $ 0  
Collateral dependent loans 0   $ 0
Impaired financing receivable, interest income forgone $ 100,000 100,000  
Financing receivable, threshold period past due 30 days    
Allowance for credit losses allocated to troubled debt $ 300,000   300,000
Commitment to lend to troubled debt 0    
Increase in provision for credit losses for TDRs 100,000 100,000  
Charge-offs related to TDRs $ 0 $ 0  
Number of TDRs that defaulted | contract 0    
Loan restructuring, troubled debt restructuring $ 20,357,000   $ 21,280,000
Payment Deferral | COVID-19 | Consumer Borrower      
Financing Receivable, Impaired [Line Items]      
Loan restructuring, trial modifications 144,000,000    
Loan restructuring, end of period 1,000,000    
Loan restructuring, resumed payment 143,000,000    
Loan restructuring, troubled debt restructuring $ 4,000,000    
Residential real estate      
Financing Receivable, Impaired [Line Items]      
Threshold period past due for write-off of financing receivable 120 days    
Commercial Industrial Loans And Commercial Real Estate      
Financing Receivable, Impaired [Line Items]      
Threshold period past due for write-off of financing receivable 120 days    
Consumer      
Financing Receivable, Impaired [Line Items]      
Threshold period past due for write-off of financing receivable 180 days