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Loans And Related Allowances For Loan Losses (Impaired Loans and Related Interest Income by Loan Portfolio Class) (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Financing Receivable, Impaired [Line Items]    
Impaired Loans with Specific Allowance: Recorded Investment $ 1,399 $ 9,200
Impaired Loans with Specific Allowance: Related Allowance 57 2,173
Impaired Loans with No Specific Allowance: Recorded Investment 6,060 5,974
Total Impaired Loans: Recorded Investment 7,459 15,174
Unpaid Principal Balance 11,063 25,865
Commercial real estate- non owner-occupied [Member]    
Financing Receivable, Impaired [Line Items]    
Impaired Loans with Specific Allowance: Recorded Investment 111 116
Impaired Loans with Specific Allowance: Related Allowance 4 9
Impaired Loans with No Specific Allowance: Recorded Investment 8 33
Total Impaired Loans: Recorded Investment 119 149
Unpaid Principal Balance 119 8,224
Commercial real estate- all other CRE [Member]    
Financing Receivable, Impaired [Line Items]    
Impaired Loans with No Specific Allowance: Recorded Investment 3,211 3,030
Total Impaired Loans: Recorded Investment 3,211 3,030
Unpaid Principal Balance 3,211 3,030
Acquisition and development- 1-4 family residential construction [Member]    
Financing Receivable, Impaired [Line Items]    
Impaired Loans with No Specific Allowance: Recorded Investment 266 291
Total Impaired Loans: Recorded Investment 266 291
Unpaid Principal Balance 266 291
Acquisition and development- All other A&D [Member]    
Financing Receivable, Impaired [Line Items]    
Impaired Loans with Specific Allowance: Recorded Investment 276 8,219
Impaired Loans with Specific Allowance: Related Allowance 13 2,142
Impaired Loans with No Specific Allowance: Recorded Investment 300 60
Total Impaired Loans: Recorded Investment 576 8,279
Unpaid Principal Balance 1,724 8,340
Commercial and industrial [Member]    
Financing Receivable, Impaired [Line Items]    
Impaired Loans with No Specific Allowance: Recorded Investment   30
Total Impaired Loans: Recorded Investment   30
Unpaid Principal Balance 2,214 2,266
Residential mortgage- term [Member]    
Financing Receivable, Impaired [Line Items]    
Impaired Loans with Specific Allowance: Recorded Investment 936 865
Impaired Loans with Specific Allowance: Related Allowance 34 22
Impaired Loans with No Specific Allowance: Recorded Investment 1,910 1,668
Total Impaired Loans: Recorded Investment 2,846 2,533
Unpaid Principal Balance 3,031 2,724
Residential mortgage- home equity [Member]    
Financing Receivable, Impaired [Line Items]    
Impaired Loans with Specific Allowance: Recorded Investment 76  
Impaired Loans with Specific Allowance: Related Allowance 6  
Impaired Loans with No Specific Allowance: Recorded Investment 339 858
Total Impaired Loans: Recorded Investment 415 858
Unpaid Principal Balance 447 986
Consumer [Member]    
Financing Receivable, Impaired [Line Items]    
Impaired Loans with No Specific Allowance: Recorded Investment 26 4
Total Impaired Loans: Recorded Investment 26 4
Unpaid Principal Balance $ 51 $ 4