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Loans And Leases (Impaired Loans) (Details) - USD ($)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Financing Receivable, Impaired [Line Items]      
Unpaid principal balance $ 12,182,000 $ 13,306,000  
Recorded investment with allowance 9,315,000 9,141,000  
Recorded investment with no allowance 2,037,000 3,472,000  
Total recorded investment 11,352,000 12,613,000  
Related allowance 3,061,000 2,009,000  
Average recorded investment 9,519,000 7,589,000 $ 5,500,000
Interest income recognized 402,000 198,000 81,000
Cash basis interest income recognized   1,000 $ 0
Commercial And Industrial [Member]      
Financing Receivable, Impaired [Line Items]      
Unpaid principal balance 235,000 555,000  
Recorded investment with allowance 206,000 500,000  
Recorded investment with no allowance 29,000 55,000  
Total recorded investment 235,000 555,000  
Related allowance 193,000 331,000  
Average recorded investment 434,000 511,000  
Interest income recognized 51,000 22,000  
Cash basis interest income recognized   1,000  
Commercial Real Estate: Non-Owner Occupied [Member]      
Financing Receivable, Impaired [Line Items]      
Unpaid principal balance 3,346,000 7,960,000  
Recorded investment with allowance 2,611,000 7,209,000  
Recorded investment with no allowance 405,000 630,000  
Total recorded investment 3,016,000 7,839,000  
Related allowance 993,000 1,237,000  
Average recorded investment 4,230,000 2,755,000  
Interest income recognized 176,000 95,000  
Commercial Real Estate: Owner Occupied [Member]      
Financing Receivable, Impaired [Line Items]      
Unpaid principal balance 5,363,000 2,588,000  
Recorded investment with allowance 4,351,000 922,000  
Recorded investment with no allowance 876,000 1,505,000  
Total recorded investment 5,227,000 2,427,000  
Related allowance 1,389,000 337,000  
Average recorded investment 3,088,000 2,705,000  
Interest income recognized 129,000 67,000  
Commercial Real Estate: Construction [Member]      
Financing Receivable, Impaired [Line Items]      
Unpaid principal balance 416,000 422,000  
Recorded investment with no allowance 193,000 226,000  
Total recorded investment 193,000 226,000  
Average recorded investment 209,000 241,000  
Consumer: Home Equity Installment [Member]      
Financing Receivable, Impaired [Line Items]      
Unpaid principal balance 64,000 230,000  
Recorded investment with no allowance 31,000 167,000  
Total recorded investment 31,000 167,000  
Average recorded investment 78,000 239,000  
Interest income recognized 3,000 2,000  
Consumer Home Equity Line Of Credit [Member]      
Financing Receivable, Impaired [Line Items]      
Unpaid principal balance 778,000 607,000  
Recorded investment with allowance 650,000 28,000  
Recorded investment with no allowance 87,000 484,000  
Total recorded investment 737,000 512,000  
Related allowance 167,000 1,000  
Average recorded investment 816,000 472,000  
Interest income recognized 28,000 1,000  
Consumer: Auto Loans And Leases [Member]      
Financing Receivable, Impaired [Line Items]      
Unpaid principal balance 25,000 47,000  
Recorded investment with allowance 25,000 43,000  
Recorded investment with no allowance   2,000  
Total recorded investment 25,000 45,000  
Related allowance 3,000 7,000  
Average recorded investment 30,000 25,000  
Interest income recognized   2,000  
Consumer: Other [Member]      
Financing Receivable, Impaired [Line Items]      
Unpaid principal balance 6,000 6,000  
Recorded investment with allowance 6,000 6,000  
Total recorded investment 6,000 6,000  
Related allowance 1,000 1,000  
Average recorded investment 6,000 12,000  
Interest income recognized   2,000  
Residential: Real Estate [Member]      
Financing Receivable, Impaired [Line Items]      
Unpaid principal balance 1,949,000 891,000  
Recorded investment with allowance 1,466,000 433,000  
Recorded investment with no allowance 416,000 403,000  
Total recorded investment 1,882,000 836,000  
Related allowance 315,000 95,000  
Average recorded investment 628,000 629,000  
Interest income recognized 15,000 7,000  
Residential: Construction [Member]      
Financing Receivable, Impaired [Line Items]      
Unpaid principal balance  
Recorded investment with allowance  
Recorded investment with no allowance  
Total recorded investment  
Related allowance