Allowance For Loan Losses (Summary Of Allowance Amount Required For Loans Individually Evaluated For Impairment And The Amount Required For Loans Collectively Evaluated For Impairment) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Dec. 31, 2011
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, Individually evaluated for impairment	$ 1,032	$ 1,162	$ 587
Allowance for loan losses, Collectively evaluated for impairment	8,454	8,140	8,302
Allowance for loan losses, Balance	9,486	9,302	8,889	8,702
Loans, Individually evaluated for impairment	25,691	28,674	25,674
Loans, Collectively evaluated for impairment	733,923	708,460	677,785
Total loans	759,614	737,134	703,459
Commercial Related Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, Individually evaluated for impairment	1,032	1,162	587
Allowance for loan losses, Collectively evaluated for impairment	6,947	6,870	7,423
Allowance for loan losses, Balance	7,979	8,032	8,010	8,120
Loans, Individually evaluated for impairment	24,711	27,607	24,883
Loans, Collectively evaluated for impairment	602,738	579,873	549,696
Total loans	627,449	607,480	574,579
Builder & Developer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, Individually evaluated for impairment	62	147	147
Allowance for loan losses, Collectively evaluated for impairment	1,472	1,424	1,832
Allowance for loan losses, Balance	1,534	1,571	1,979	2,170
Loans, Individually evaluated for impairment	9,386	12,467	8,128
Loans, Collectively evaluated for impairment	87,809	84,469	91,569
Total loans	97,195	96,936	99,697
Commercial Real Estate Investor [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, Individually evaluated for impairment	0	0	100
Allowance for loan losses, Collectively evaluated for impairment	1,286	1,259	1,913
Allowance for loan losses, Balance	1,286	1,259	2,013	2,003
Loans, Individually evaluated for impairment	5,712	5,736	4,782
Loans, Collectively evaluated for impairment	119,205	116,978	114,679
Total loans	124,917	122,714	119,461
Residential Real Estate Investor [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, Individually evaluated for impairment	700	700	30
Allowance for loan losses, Collectively evaluated for impairment	496	495	470
Allowance for loan losses, Balance	1,196	1,195	500	505
Loans, Individually evaluated for impairment	2,814	2,731	552
Loans, Collectively evaluated for impairment	63,911	63,688	61,069
Total loans	66,725	66,419	61,621
Hotel/Motel [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, Individually evaluated for impairment	0	0	0
Allowance for loan losses, Collectively evaluated for impairment	514	485	443
Allowance for loan losses, Balance	514	485	443	394
Loans, Individually evaluated for impairment	0	0	0
Loans, Collectively evaluated for impairment	68,903	64,948	59,462
Total loans	68,903	64,948	59,462
Wholesale & Retail [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, Individually evaluated for impairment	0	0	0
Allowance for loan losses, Collectively evaluated for impairment	1,832	1,913	1,716
Allowance for loan losses, Balance	1,832	1,913	1,716	1,806
Loans, Individually evaluated for impairment	2,928	3,048	2,128
Loans, Collectively evaluated for impairment	66,977	67,395	56,385
Total loans	69,905	70,443	58,513
Manufacturing [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, Individually evaluated for impairment	0	0	0
Allowance for loan losses, Collectively evaluated for impairment	224	237	151
Allowance for loan losses, Balance	224	237	151	151
Loans, Individually evaluated for impairment	688	699	711
Loans, Collectively evaluated for impairment	37,235	39,559	25,616
Total loans	37,923	40,258	26,327
Agriculture [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, Individually evaluated for impairment	100	100	100
Allowance for loan losses, Collectively evaluated for impairment	137	102	93
Allowance for loan losses, Balance	237	202	193	184
Loans, Individually evaluated for impairment	469	471	486
Loans, Collectively evaluated for impairment	27,466	20,457	18,583
Total loans	27,935	20,928	19,069
Other Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, Individually evaluated for impairment	170	215	210
Allowance for loan losses, Collectively evaluated for impairment	986	955	805
Allowance for loan losses, Balance	1,156	1,170	1,015	907
Loans, Individually evaluated for impairment	2,714	2,455	8,096
Loans, Collectively evaluated for impairment	131,232	122,379	122,333
Total loans	133,946	124,834	130,429
Consumer Related Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, Individually evaluated for impairment	0	0	0
Allowance for loan losses, Collectively evaluated for impairment	560	599	367
Allowance for loan losses, Balance	560	599	367	345
Loans, Individually evaluated for impairment	980	1,067	791
Loans, Collectively evaluated for impairment	131,185	128,587	128,089
Total loans	132,165	129,654	128,880
Residential Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, Individually evaluated for impairment	0	0	0
Allowance for loan losses, Collectively evaluated for impairment	48	124	117
Allowance for loan losses, Balance	48	124	117	88
Loans, Individually evaluated for impairment	83	85	202
Loans, Collectively evaluated for impairment	23,455	23,426	22,448
Total loans	23,538	23,511	22,650
Home Equity [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, Individually evaluated for impairment	0	0	0
Allowance for loan losses, Collectively evaluated for impairment	315	237	87
Allowance for loan losses, Balance	315	237	87	86
Loans, Individually evaluated for impairment	279	340	269
Loans, Collectively evaluated for impairment	68,585	65,518	58,413
Total loans	68,864	65,858	58,682
Other Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, Individually evaluated for impairment	0	0	0
Allowance for loan losses, Collectively evaluated for impairment	197	238	163
Allowance for loan losses, Balance	197	238	163	171
Loans, Individually evaluated for impairment	618	642	320
Loans, Collectively evaluated for impairment	39,145	39,643	47,228
Total loans	39,763	40,285	47,548
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, Individually evaluated for impairment	0	0	0
Allowance for loan losses, Collectively evaluated for impairment	947	671	512
Allowance for loan losses, Balance	$ 947	$ 671	$ 512	$ 237