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Allowance For Loan Losses (Narrative) (Details)
 12 Months Ended
Dec. 31, 2020
USD ($)
contract
Dec. 31, 2019
USD ($)
contract
Dec. 31, 2018
USD ($)
Receivables [Abstract]      
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down $ 200,000 $ 200,000 $ 200,000
Financing Receivable, Troubled Debt Restructuring, Subsequent Default   3,000,000.0  
Financing Receivable, Troubled Debt Restructuring, Commitment to Lend 0    
Loan Review Selection Threshold ($) 1,000,000 1,000,000 1,000,000
Impaired Financing Receivable, Interest Income, Accrual Method 100,000 100,000 100,000
Financing Receivable, Allowance for Credit Loss [Line Items]      
Loan Review Selection Threshold ($) 1,000,000 1,000,000 1,000,000
Impaired Financing Receivable, Interest Income Foregone   200,000 200,000
Financing Receivable, Troubled Debt Restructuring, Allowance for Credit Losses 1,600,000 800,000  
Financing Receivable, Troubled Debt Restructurings, Provision for Credit Losses 100,000 100,000 100,000
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down $ 200,000 $ 200,000 200,000
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts | contract 0 1  
Financing Receivable, Troubled Debt Restructuring, Subsequent Default   $ 3,000,000.0  
Total Troubled Debt Restructurings $ 26,142,000 29,630,000  
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Charge-Off   700,000  
Impaired Financing Receivable, Interest Income, Accrual Method 100,000 $ 100,000 $ 100,000
Payment Deferral [Member] | COVID-19 [Member] | Consumer Borrower [Member]      
Financing Receivable, Allowance for Credit Loss [Line Items]      
Loan Restructuring, Trial Modifications, Amount 135,000,000    
Loan Restructuring, Trial Modifications, Period End Amount 9,000,000    
Loan Restructuring, Trial Modifications, Resumed Payment, Amount 126,000,000    
Total Troubled Debt Restructurings 4,000,000    
Payment Deferral [Member] | COVID-19 [Member] | Commercial Borrower [Member]      
Financing Receivable, Allowance for Credit Loss [Line Items]      
Loan Restructuring, Trial Modifications, Amount 455,000,000    
Loan Restructuring, Trial Modifications, Period End Amount 99,000,000    
Loan Restructuring, Trial Modifications, Resumed Payment, Amount 356,000,000    
Payment Deferral [Member] | COVID-19 [Member] | Commercial Real Estate Hotels      
Financing Receivable, Allowance for Credit Loss [Line Items]      
Loan Restructuring, Trial Modifications, Period End Amount $ 88,000,000