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Loans, Allowance For Loan Losses And OREO (Impaired Loans) (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2017
Dec. 31, 2016
Financing Receivable, Impaired [Line Items]    
Totals: Recorded Investment $ 7,879 $ 9,799
Totals: Unpaid Principal Balance 8,579 10,545
Totals: Related Allowance 1,587 1,771
Totals: Average Recorded Investment 8,842 9,610
Totals: Interest Income Recognized 93 464
Commercial Mortgages-Owner Occupied [Member]    
Financing Receivable, Impaired [Line Items]    
With No Related Allowance Recorded: Recorded Investment 2,262 3,019
With No Related Allowance Recorded: Unpaid Principal Balance 2,348 3,077
With No Related Allowance Recorded: Average Recorded Investment 2,641 3,051
With No Related Allowance Recorded: Interest Income Recognized 46 142
With An Allowance Recorded: Recorded Investment 1,225 1,587
With An Allowance Recorded: Unpaid Principal Balance 1,225 1,618
With An Allowance Recorded: Average Recorded Investment 1,406 1,232
With An Allowance Recorded: Interest Income Recognized 16 81
Totals: Recorded Investment 3,487 4,606
Totals: Unpaid Principal Balance 3,573 4,695
Totals: Related Allowance 233 249
Totals: Average Recorded Investment 4,047 4,283
Totals: Interest Income Recognized 62 223
Commercial Mortgages-Non-Owner Occupied [Member]    
Financing Receivable, Impaired [Line Items]    
With No Related Allowance Recorded: Recorded Investment 418 349
With No Related Allowance Recorded: Unpaid Principal Balance 421 349
With No Related Allowance Recorded: Average Recorded Investment 384 263
With No Related Allowance Recorded: Interest Income Recognized 5 23
With An Allowance Recorded: Recorded Investment 74 74
With An Allowance Recorded: Unpaid Principal Balance 74 74
With An Allowance Recorded: Average Recorded Investment 74 373
With An Allowance Recorded: Interest Income Recognized 1 6
Totals: Recorded Investment 492 423
Totals: Unpaid Principal Balance 495 423
Totals: Related Allowance 19 20
Totals: Average Recorded Investment 458 636
Totals: Interest Income Recognized 6 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 666 657
With An Allowance Recorded: Average Recorded Investment 169 255
Totals: Recorded Investment 169 169
Totals: Unpaid Principal Balance 666 657
Totals: Related Allowance 78 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 3  
With An Allowance Recorded: Unpaid Principal Balance 3  
With An Allowance Recorded: Average Recorded Investment 2 16
Totals: Recorded Investment 3  
Totals: Unpaid Principal Balance 3  
Totals: Related Allowance 3  
Totals: Average Recorded Investment 2 16
Consumer Secured [Member]    
Financing Receivable, Impaired [Line Items]    
With No Related Allowance Recorded: Recorded Investment 18 18
With No Related Allowance Recorded: Unpaid Principal Balance 18 18
With No Related Allowance Recorded: Average Recorded Investment 18 19
With No Related Allowance Recorded: Interest Income Recognized   1
With An Allowance Recorded: Recorded Investment 109 110
With An Allowance Recorded: Unpaid Principal Balance 109 110
With An Allowance Recorded: Average Recorded Investment 110 150
With An Allowance Recorded: Interest Income Recognized 2 8
Totals: Recorded Investment 127 128
Totals: Unpaid Principal Balance 127 128
Totals: Related Allowance 109 110
Totals: Average Recorded Investment 128 169
Totals: Interest Income Recognized 2 9
Residential Mortgages [Member]    
Financing Receivable, Impaired [Line Items]    
With No Related Allowance Recorded: Recorded Investment 1,588 1,555
With No Related Allowance Recorded: Unpaid Principal Balance 1,673 1,687
With No Related Allowance Recorded: Average Recorded Investment 1,572 1,776
With No Related Allowance Recorded: Interest Income Recognized 10 55
With An Allowance Recorded: Recorded Investment 262 699
With An Allowance Recorded: Unpaid Principal Balance 276 736
With An Allowance Recorded: Average Recorded Investment 481 675
With An Allowance Recorded: Interest Income Recognized 2 30
Totals: Recorded Investment 1,850 2,254
Totals: Unpaid Principal Balance 1,949 2,423
Totals: Related Allowance 17 83
Totals: Average Recorded Investment 2,053 2,451
Totals: Interest Income Recognized 12 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 252 698
With No Related Allowance Recorded: Unpaid Principal Balance 255 698
With No Related Allowance Recorded: Average Recorded Investment 475 349
With No Related Allowance Recorded: Interest Income Recognized 2 37
With An Allowance Recorded: Recorded Investment 1,499 1,521
With An Allowance Recorded: Unpaid Principal Balance 1,511 1,521
With An Allowance Recorded: Average Recorded Investment 1,510 1,351
With An Allowance Recorded: Interest Income Recognized 9 81
Totals: Recorded Investment 1,751 2,219
Totals: Unpaid Principal Balance 1,766 2,219
Totals: Related Allowance 1,128 1,233
Totals: Average Recorded Investment 1,985 1,700
Totals: Interest Income Recognized $ 11 $ 118