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Loans, Allowance For Loan Losses And OREO (Impaired Loans) (Details) - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2017
Dec. 31, 2016
Financing Receivable, Impaired [Line Items]    
Totals: Recorded Investment $ 7,987 $ 9,799
Totals: Unpaid Principal Balance 9,048 10,545
Totals: Related Allowance 1,902 1,771
Totals: Average Recorded Investment 8,894 9,610
Totals: Interest Income Recognized 296 464
Commercial Mortgages-Owner Occupied [Member]    
Financing Receivable, Impaired [Line Items]    
With No Related Allowance Recorded: Recorded Investment 1,075 3,019
With No Related Allowance Recorded: Unpaid Principal Balance 1,111 3,077
With No Related Allowance Recorded: Average Recorded Investment 2,047 3,051
With No Related Allowance Recorded: Interest Income Recognized 86 142
With An Allowance Recorded: Recorded Investment 1,709 1,587
With An Allowance Recorded: Unpaid Principal Balance 1,709 1,618
With An Allowance Recorded: Average Recorded Investment 1,648 1,232
With An Allowance Recorded: Interest Income Recognized 68 81
Totals: Recorded Investment 2,784 4,606
Totals: Unpaid Principal Balance 2,820 4,695
Totals: Related Allowance 192 249
Totals: Average Recorded Investment 3,695 4,283
Totals: Interest Income Recognized 154 223
Commercial Mortgages-Non-Owner Occupied [Member]    
Financing Receivable, Impaired [Line Items]    
With No Related Allowance Recorded: Recorded Investment 411 349
With No Related Allowance Recorded: Unpaid Principal Balance 417 349
With No Related Allowance Recorded: Average Recorded Investment 380 263
With No Related Allowance Recorded: Interest Income Recognized 15 23
With An Allowance Recorded: Recorded Investment 73 74
With An Allowance Recorded: Unpaid Principal Balance 73 74
With An Allowance Recorded: Average Recorded Investment 74 373
With An Allowance Recorded: Interest Income Recognized 4 6
Totals: Recorded Investment 484 423
Totals: Unpaid Principal Balance 490 423
Totals: Related Allowance 19 20
Totals: Average Recorded Investment 454 636
Totals: Interest Income Recognized 19 29
Commercial Construction [Member]    
Financing Receivable, Impaired [Line Items]    
With No Related Allowance Recorded: Average Recorded Investment   14
With An Allowance Recorded: Recorded Investment 169 169
With An Allowance Recorded: Unpaid Principal Balance 685 657
With An Allowance Recorded: Average Recorded Investment 169 255
Totals: Recorded Investment 169 169
Totals: Unpaid Principal Balance 685 657
Totals: Related Allowance 79 76
Totals: Average Recorded Investment 169 269
Consumer Unsecured [Member]    
Financing Receivable, Impaired [Line Items]    
With No Related Allowance Recorded: Recorded Investment
With No Related Allowance Recorded: Unpaid Principal Balance
With No Related Allowance Recorded: Average Recorded Investment
With No Related Allowance Recorded: Interest Income Recognized
With An Allowance Recorded: Recorded Investment 2  
With An Allowance Recorded: Unpaid Principal Balance 2  
With An Allowance Recorded: Average Recorded Investment 1 16
Totals: Recorded Investment 2  
Totals: Unpaid Principal Balance 2  
Totals: Related Allowance 2  
Totals: Average Recorded Investment 1 16
Consumer Secured [Member]    
Financing Receivable, Impaired [Line Items]    
With No Related Allowance Recorded: Recorded Investment 56 18
With No Related Allowance Recorded: Unpaid Principal Balance 56 18
With No Related Allowance Recorded: Average Recorded Investment 37 19
With No Related Allowance Recorded: Interest Income Recognized 2 1
With An Allowance Recorded: Recorded Investment 432 110
With An Allowance Recorded: Unpaid Principal Balance 445 110
With An Allowance Recorded: Average Recorded Investment 271 150
With An Allowance Recorded: Interest Income Recognized 11 8
Totals: Recorded Investment 488 128
Totals: Unpaid Principal Balance 501 128
Totals: Related Allowance 305 110
Totals: Average Recorded Investment 308 169
Totals: Interest Income Recognized 13 9
Residential Mortgages [Member]    
Financing Receivable, Impaired [Line Items]    
With No Related Allowance Recorded: Recorded Investment 1,451 1,555
With No Related Allowance Recorded: Unpaid Principal Balance 1,543 1,687
With No Related Allowance Recorded: Average Recorded Investment 1,503 1,776
With No Related Allowance Recorded: Interest Income Recognized 38 55
With An Allowance Recorded: Recorded Investment 151 699
With An Allowance Recorded: Unpaid Principal Balance 173 736
With An Allowance Recorded: Average Recorded Investment 425 675
With An Allowance Recorded: Interest Income Recognized 3 30
Totals: Recorded Investment 1,602 2,254
Totals: Unpaid Principal Balance 1,716 2,423
Totals: Related Allowance 4 83
Totals: Average Recorded Investment 1,928 2,451
Totals: Interest Income Recognized 41 85
Residential Consumer Construction [Member]    
Financing Receivable, Impaired [Line Items]    
With No Related Allowance Recorded: Recorded Investment
With No Related Allowance Recorded: Unpaid Principal Balance
With No Related Allowance Recorded: Average Recorded Investment 86
With No Related Allowance Recorded: Interest Income Recognized
With An Allowance Recorded: Recorded Investment
With An Allowance Recorded: Unpaid Principal Balance
With An Allowance Recorded: Average Recorded Investment
With An Allowance Recorded: Interest Income Recognized
Totals: Recorded Investment
Totals: Unpaid Principal Balance
Totals: Related Allowance
Totals: Average Recorded Investment 86
Totals: Interest Income Recognized
Commercial [Member]    
Financing Receivable, Impaired [Line Items]    
With No Related Allowance Recorded: Recorded Investment 783 698
With No Related Allowance Recorded: Unpaid Principal Balance 962 698
With No Related Allowance Recorded: Average Recorded Investment 741 349
With No Related Allowance Recorded: Interest Income Recognized 28 37
With An Allowance Recorded: Recorded Investment 1,675 1,521
With An Allowance Recorded: Unpaid Principal Balance 1,872 1,521
With An Allowance Recorded: Average Recorded Investment 1,598 1,351
With An Allowance Recorded: Interest Income Recognized 41 81
Totals: Recorded Investment 2,458 2,219
Totals: Unpaid Principal Balance 2,834 2,219
Totals: Related Allowance 1,301 1,233
Totals: Average Recorded Investment 2,339 1,700
Totals: Interest Income Recognized $ 69 $ 118