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Allowance For Loan Losses (Impaired Loans By Class) (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2016
Dec. 31, 2015
Unpaid Principal Balance [Abstract]    
With no related allowance: $ 7,363 $ 8,960
With an allowance recorded: 6,146 6,039
Total: 13,509 14,999
Recorded Investment [Abstract]    
With no related allowance: 6,955 8,334
With an allowance recorded: 5,792 5,692
Total: 12,747 14,026
Related Allowance 546 576
Average Recorded Investment [Abstract]    
With no related allowance: 7,025 8,571
With an allowance recorded: 5,813 5,779
Total: 12,838 14,350
Interest Income Recognized [Abstract]    
With no related allowance: 41 183
With an allowance recorded: 53 221
Total: 94 404
Commercial - Non Real Estate Commercial And Industrial [Member]    
Unpaid Principal Balance [Abstract]    
With no related allowance: 396 747
With an allowance recorded: 305 313
Recorded Investment [Abstract]    
With no related allowance: 343 534
With an allowance recorded: 305 313
Related Allowance 5 2
Average Recorded Investment [Abstract]    
With no related allowance: 383 749
With an allowance recorded: 310 328
Interest Income Recognized [Abstract]    
With no related allowance: 3 18
With an allowance recorded: 3 15
Commercial Real Estate Owner Occupied [Member]    
Unpaid Principal Balance [Abstract]    
With no related allowance: 1,527 2,146
With an allowance recorded: 206 207
Recorded Investment [Abstract]    
With no related allowance: 1,412 1,964
With an allowance recorded: 207 208
Related Allowance 38 39
Average Recorded Investment [Abstract]    
With no related allowance: 1,420 1,999
With an allowance recorded: 207 210
Interest Income Recognized [Abstract]    
With no related allowance: 4 19
With an allowance recorded: 2 10
Commercial Real Estate Non-Owner Occupied [Member]    
Unpaid Principal Balance [Abstract]    
With no related allowance: 1,165 1,174
With an allowance recorded: 1,282 1,291
Recorded Investment [Abstract]    
With no related allowance: 1,075 1,093
With an allowance recorded: 1,286 1,295
Related Allowance 105 102
Average Recorded Investment [Abstract]    
With no related allowance: 1,079 1,108
With an allowance recorded: 1,290 1,311
Interest Income Recognized [Abstract]    
With no related allowance: 3 15
With an allowance recorded: 16 69
Construction And Farmland Commercial [Member]    
Unpaid Principal Balance [Abstract]    
With no related allowance: 401 337
With an allowance recorded: 1,005 1,081
Recorded Investment [Abstract]    
With no related allowance: 369 310
With an allowance recorded: 1,009 1,085
Related Allowance 13 10
Average Recorded Investment [Abstract]    
With no related allowance: 373 325
With an allowance recorded: 1,012 1,109
Interest Income Recognized [Abstract]    
With no related allowance: 2 0
With an allowance recorded: 10 48
Residential Equity Lines [Member]    
Unpaid Principal Balance [Abstract]    
With no related allowance: 149 149
With an allowance recorded: 549 551
Recorded Investment [Abstract]    
With no related allowance: 143 145
With an allowance recorded: 213 216
Related Allowance 83 86
Average Recorded Investment [Abstract]    
With no related allowance: 143 145
With an allowance recorded: 213 221
Interest Income Recognized [Abstract]    
With no related allowance: 0 5
With an allowance recorded: 1 3
Residential Single Family [Member]    
Unpaid Principal Balance [Abstract]    
With no related allowance: 3,725 4,407
With an allowance recorded: 2,799 2,596
Recorded Investment [Abstract]    
With no related allowance: 3,613 4,288
With an allowance recorded: 2,772 2,575
Related Allowance 302 337
Average Recorded Investment [Abstract]    
With no related allowance: 3,627 4,245
With an allowance recorded: 2,781 2,600
Interest Income Recognized [Abstract]    
With no related allowance: 29 126
With an allowance recorded: 21 76
Commercial [Member]    
Unpaid Principal Balance [Abstract]    
Total: 701 1,060
Recorded Investment [Abstract]    
Total: 648 847
Related Allowance 5 2
Average Recorded Investment [Abstract]    
Total: 693 1,077
Interest Income Recognized [Abstract]    
Total: 6 33
Commercial Real Estate    
Unpaid Principal Balance [Abstract]    
Total: 4,180 4,818
Recorded Investment [Abstract]    
Total: 3,980 4,560
Related Allowance 143 141
Average Recorded Investment [Abstract]    
Total: 3,996 4,628
Interest Income Recognized [Abstract]    
Total: 25 113
Construction and Farmland    
Unpaid Principal Balance [Abstract]    
Total: 1,406 1,418
Recorded Investment [Abstract]    
Total: 1,378 1,395
Related Allowance 13 10
Average Recorded Investment [Abstract]    
Total: 1,385 1,434
Interest Income Recognized [Abstract]    
Total: 12 48
Residential Real Estate    
Unpaid Principal Balance [Abstract]    
Total: 7,222 7,703
Recorded Investment [Abstract]    
Total: 6,741 7,224
Related Allowance 385 423
Average Recorded Investment [Abstract]    
Total: 6,764 7,211
Interest Income Recognized [Abstract]    
Total: 51 210
All Other Loans [Member]    
Unpaid Principal Balance [Abstract]    
With no related allowance: 0 0
With an allowance recorded: 0 0
Total: 0 0
Recorded Investment [Abstract]    
With no related allowance: 0 0
With an allowance recorded: 0 0
Total: 0 0
Related Allowance 0 0
Average Recorded Investment [Abstract]    
With no related allowance: 0 0
With an allowance recorded: 0 0
Total: 0 0
Interest Income Recognized [Abstract]    
With no related allowance: 0 0
With an allowance recorded: 0 0
Total: $ 0 $ 0