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Loans (Narrative) (Details)
3 Months Ended 9 Months Ended
Sep. 30, 2020
USD ($)
loan
Sep. 30, 2019
USD ($)
loan
Sep. 30, 2020
USD ($)
segment
contract
loan
Sep. 30, 2019
USD ($)
loan
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Number of loan portfolio segments | segment     2  
Commitments to lend additional amounts to TDRs $ 0 $ 0 $ 0 $ 0
Number of defaults | loan 0 0 0 0
Residential Mortgage [Member] | Cares Act [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Number of contracts modified under the CARES Act | contract     12  
Recorded investment modified under CARES Act $ 4,200,000   $ 4,200,000  
Accrual and Nonaccrual TDRs [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Impaired loan under TDRs     $ 1,447,000 $ 3,824,000
Commercial Related Loans [Member] | Cares Act [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Number of contracts modified under the CARES Act | contract     88  
Recorded investment modified under CARES Act 93,100,000   $ 93,100,000  
Total Consumer Related Loans [Member] | Cares Act [Member]        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Number of contracts modified under the CARES Act | contract     3  
Recorded investment modified under CARES Act $ 20,000   $ 20,000