Allowance For Loan Losses (Summary Of Analysis Of Allowance For Loan Losses) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	$ 11,674	$ 11,472	$ 11,167
Total Losses	1,288	1,555	2,151
Total Recoveries	929	1,257	1,206
Net losses	359	298	945
Provision for loan losses	1,250	500	1,250
Ending balance	12,565	11,674	11,472
Commercial Loan [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	934	781
Total Losses	23	489	77
Total Recoveries	124	73	10
Provision for loan losses	268	569
Ending balance	1,303	934	781
Owner Occupied [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	2,109	1,589
Total Losses	5	179	559
Total Recoveries	89	31	290
Provision for loan losses	231	668
Ending balance	2,424	2,109	1,589
Non Owner Occupied [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	3,438	2,977
Total Losses	65	124	178
Total Recoveries	91	17	13
Provision for loan losses	1,486	568
Ending balance	4,950	3,438	2,977
Land And Land Development [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	2,263	2,852
Total Losses	3	127	457
Total Recoveries	278	840	456
Provision for loan losses	(1,897)	(1,302)
Ending balance	641	2,263	2,852
Construction Loans [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	24	15
Total Losses	33	9	0
Total Recoveries	0	0	0
Provision for loan losses	162	18
Ending balance	153	24	15
Non Jumbo [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	2,174	1,253
Total Losses	359	169	417
Total Recoveries	134	136	107
Provision for loan losses	(38)	954
Ending balance	1,911	2,174	1,253
Jumbo [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	95	1,593
Total Losses	2	0	208
Total Recoveries	0	6	96
Provision for loan losses	(21)	(1,504)
Ending balance	72	95	1,593
Home Equity [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	413	253
Total Losses	158	175	76
Total Recoveries	30	3	3
Provision for loan losses	353	332
Ending balance	638	413	253
Mortgage Warehouse Lines [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	0	0
Total Losses	0	0	0
Total Recoveries	0	0	0
Provision for loan losses	0	0
Ending balance	0	0	0
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	121	59
Total Losses	389	98	69
Total Recoveries	82	76	105
Provision for loan losses	396	84
Ending balance	210	121	59
Other
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	103	100
Total Losses	251	185	110
Total Recoveries	101	75	126
Provision for loan losses	310	113
Ending balance	$ 263	$ 103	$ 100