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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, 2016
Dec. 31, 2015
Financing Receivable, Impaired [Line Items]    
Impaired Loans with Specific Allowance: Recorded Investment $ 869 $ 3,868
Impaired Loans with Specific Allowance: Related Allowance 260 1,157
Impaired Loans with No Specific Allowance: Recorded Investment 23,131 20,940
Total Impaired Loans: Recorded Investment 24,000 24,808
Unpaid Principal Balance 30,191 32,700
Commercial real estate- non owner-occupied [Member]    
Financing Receivable, Impaired [Line Items]    
Impaired Loans with Specific Allowance: Recorded Investment 131 676
Impaired Loans with Specific Allowance: Related Allowance 23 144
Impaired Loans with No Specific Allowance: Recorded Investment 6,635 1,031
Total Impaired Loans: Recorded Investment 6,766 1,707
Unpaid Principal Balance 9,372 1,842
Commercial real estate- all other CRE [Member]    
Financing Receivable, Impaired [Line Items]    
Impaired Loans with Specific Allowance: Recorded Investment 432 0
Impaired Loans with Specific Allowance: Related Allowance 154 0
Impaired Loans with No Specific Allowance: Recorded Investment 10,012 12,939
Total Impaired Loans: Recorded Investment 10,444 12,939
Unpaid Principal Balance 11,057 13,302
Acquisition and development- 1-4 family residential construction [Member]    
Financing Receivable, Impaired [Line Items]    
Impaired Loans with Specific Allowance: Recorded Investment 0 700
Impaired Loans with Specific Allowance: Related Allowance 0 178
Impaired Loans with No Specific Allowance: Recorded Investment 582 0
Total Impaired Loans: Recorded Investment 582 700
Unpaid Principal Balance 628 746
Acquisition and development- All other A&D [Member]    
Financing Receivable, Impaired [Line Items]    
Impaired Loans with Specific Allowance: Recorded Investment 245 1,979
Impaired Loans with Specific Allowance: Related Allowance 40 689
Impaired Loans with No Specific Allowance: Recorded Investment 1,698 1,817
Total Impaired Loans: Recorded Investment 1,943 3,796
Unpaid Principal Balance 2,213 8,362
Commercial and industrial [Member]    
Financing Receivable, Impaired [Line Items]    
Impaired Loans with Specific Allowance: Recorded Investment 0 16
Impaired Loans with Specific Allowance: Related Allowance 0 16
Impaired Loans with No Specific Allowance: Recorded Investment 290 1,060
Total Impaired Loans: Recorded Investment 290 1,076
Unpaid Principal Balance 2,504 3,343
Residential mortgage- term [Member]    
Financing Receivable, Impaired [Line Items]    
Impaired Loans with Specific Allowance: Recorded Investment 61 440
Impaired Loans with Specific Allowance: Related Allowance 43 112
Impaired Loans with No Specific Allowance: Recorded Investment 3,763 3,874
Total Impaired Loans: Recorded Investment 3,824 4,314
Unpaid Principal Balance 4,249 4,808
Residential mortgage- home equity [Member]    
Financing Receivable, Impaired [Line Items]    
Impaired Loans with Specific Allowance: Recorded Investment 0 57
Impaired Loans with Specific Allowance: Related Allowance 0 18
Impaired Loans with No Specific Allowance: Recorded Investment 151 219
Total Impaired Loans: Recorded Investment 151 276
Unpaid Principal Balance 168 297
Consumer [Member]    
Financing Receivable, Impaired [Line Items]    
Impaired Loans with Specific Allowance: Recorded Investment 0 0
Impaired Loans with Specific Allowance: Related Allowance 0 0
Impaired Loans with No Specific Allowance: Recorded Investment 0 0
Total Impaired Loans: Recorded Investment 0 0
Unpaid Principal Balance $ 0 $ 0