Loans And Allowance For Loan Losses (Schedule Of Allowance For Loan Losses By Portfolio Segment) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	$ 8,097	$ 8,221	$ 8,500
Charged offs	(1,255)	(2,034)	(2,927)
Recoveries	215	258	253
Provision	1,418	1,652	2,395
Balance at end of period	8,475	8,097	8,221
Allowance: Amount for loans individually evaluated for impairment	270	120	335
Allowance: Amount for loans collectively evaluated for impairment	8,205	7,977	7,886
Loans individually evaluated for impairment	4,808	5,729	8,102
Loans collectively evaluated for impairment	848,322	809,830	720,339
Commercial Real Estate Mortgages [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	4,320	3,900	4,260
Charged offs	(214)	(474)	(423)
Recoveries	105	9	8
Provision	614	885	55
Balance at end of period	4,825	4,320	3,900
Allowance: Amount for loans individually evaluated for impairment	100		100
Allowance: Amount for loans collectively evaluated for impairment	4,725	4,320	3,800
Loans individually evaluated for impairment	2,046	1,888	2,676
Loans collectively evaluated for impairment	334,496	322,605	282,808
Commercial and Industrial Receivable [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	1,026	1,321	1,237
Charged offs	(405)	(102)	(123)
Recoveries	23	25	82
Provision	622	(218)	125
Balance at end of period	1,266	1,026	1,321
Allowance: Amount for loans individually evaluated for impairment	150		135
Allowance: Amount for loans collectively evaluated for impairment	1,116	1,026	1,186
Loans individually evaluated for impairment	793	818	1,078
Loans collectively evaluated for impairment	73,179	58,555	61,372
Commercial Construction And Land Development [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	515	594	999
Charged offs		(344)	(1,943)
Recoveries			77
Provision	(201)	265	1,461
Balance at end of period	314	515	594
Allowance: Amount for loans individually evaluated for impairment	20	120	100
Allowance: Amount for loans collectively evaluated for impairment	294	395	494
Loans individually evaluated for impairment	1,913	2,359	3,753
Loans collectively evaluated for impairment	16,216	19,761	26,307
Agricultural and Other Loans to Farmers [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	303	332	223
Charged offs	(81)	(160)
Recoveries	37	82	45
Provision	76	49	64
Balance at end of period	335	303	332
Allowance: Amount for loans collectively evaluated for impairment	335	303	332
Loans individually evaluated for impairment	56	664	595
Loans collectively evaluated for impairment	26,873	24,258	25,985
Residential Real Estate Mortgages [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	1,330	1,436	1,322
Charged offs	(406)	(568)	(254)
Recoveries	7	104
Provision	235	358	368
Balance at end of period	1,166	1,330	1,436
Allowance: Amount for loans collectively evaluated for impairment	1,166	1,330	1,436
Loans collectively evaluated for impairment	317,115	297,103	239,799
Other Consumer Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	207	286	73
Charged offs	(120)	(294)	(90)
Recoveries	23	38	41
Provision	27	177	262
Balance at end of period	137	207	286
Allowance: Amount for loans collectively evaluated for impairment	137	207	286
Loans collectively evaluated for impairment	14,523	19,001	22,906
Home Equity Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	255	266	276
Charged offs	(29)	(92)	(94)
Recoveries	20
Provision	18	81	84
Balance at end of period	264	255	266
Allowance: Amount for loans collectively evaluated for impairment	264	255	266
Loans collectively evaluated for impairment	49,565	53,303	51,462
Tax Exempt Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of period	141	86	110
Provision	27	55	(24)
Balance at end of period	168	141	86
Allowance: Amount for loans collectively evaluated for impairment	168	141	86
Loans collectively evaluated for impairment	$ 16,355	$ 15,244	$ 9,700