Loans And Allowance For Loan Losses (Schedule Of Allowance For Loan Losses By Portfolio Segment) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	$ 9,099	$ 8,751	$ 8,969	$ 8,475	$ 8,475
Charged off	(585)	(668)	(1,543)	(1,337)	(1,620)
Recoveries	98	61	291	121	281
Provision	425	491	1,320	1,376	1,833
Ending Balance	9,037	8,635	9,037	8,635	8,969
Amount for loans individually evaluated for impairment	291		291		964
Amount for loans collectively evaluated for impairment	8,746		8,746		8,005
Loans individually evaluated for impairment	5,470		5,470		6,134
Loans collectively evaluated for impairment	970,433		970,433		912,906
Commercial Real Estate Mortgages [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	4,289	4,887	4,468	4,825	4,825
Charged off	(461)	(19)	(667)	(184)	(238)
Recoveries	58	34	97	40	85
Provision	600	(71)	588	150	(204)
Ending Balance	4,486	4,831	4,486	4,831	4,468
Amount for loans individually evaluated for impairment	39		39		776
Amount for loans collectively evaluated for impairment	4,447		4,447		3,692
Loans individually evaluated for impairment	1,988		1,988		3,592
Loans collectively evaluated for impairment	370,529		370,529		322,357
Commercial And Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	1,147	1,573	929	1,266	1,266
Charged off	(22)	(317)	(310)	(416)	(475)
Recoveries	31	1	33	13	16
Provision	(49)	150	455	544	122
Ending Balance	1,107	1,407	1,107	1,407	929
Amount for loans individually evaluated for impairment	176		176		187
Amount for loans collectively evaluated for impairment	931		931		742
Loans individually evaluated for impairment	437		437		634
Loans collectively evaluated for impairment	77,451		77,451		73,259
Commercial Construction And Land Development [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	145	254	145	314	314
Provision	(12)	77	(12)	17	(169)
Ending Balance	133	331	133	331	145
Amount for loans individually evaluated for impairment	24		24
Amount for loans collectively evaluated for impairment	109		109		145
Loans individually evaluated for impairment	1,260		1,260		1,328
Loans collectively evaluated for impairment	23,894		23,894		24,093
Agriculture And Other Loans To Farmers [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	372	371	277	335	335
Charged off	(54)		(72)	(14)	(14)
Recoveries	3	11	15	26	130
Provision	28	(26)	129	9	(174)
Ending Balance	349	356	349	356	277
Amount for loans collectively evaluated for impairment	349		349		277
Loans individually evaluated for impairment	108		108		181
Loans collectively evaluated for impairment	32,412		32,412		30,290
Residential Real Estate Mortgages [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	2,485	1,149	2,714	1,166	1,166
Charged off		(264)	(70)	(557)	(650)
Recoveries			129	12	12
Provision	(182)	275	(470)	539	2,186
Ending Balance	2,303	1,160	2,303	1,160	2,714
Amount for loans individually evaluated for impairment	52		52
Amount for loans collectively evaluated for impairment	2,251		2,251		2,714
Loans individually evaluated for impairment	1,650		1,650		389
Loans collectively evaluated for impairment	389,418		389,418		382,289
Consumer Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	110	103	94	137	137
Charged off	(23)	(68)	(48)	(148)	(191)
Recoveries	6	14	17	29	37
Provision	11	97	41	128	111
Ending Balance	104	146	104	146	94
Amount for loans individually evaluated for impairment					1
Amount for loans collectively evaluated for impairment	104		104		93
Loans individually evaluated for impairment	9		9		10
Loans collectively evaluated for impairment	10,138		10,138		12,130
Home Equity Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	472	241	271	264	264
Charged off	(25)		(376)	(18)	(52)
Recoveries		1		1	1
Provision	34		586	(5)	58
Ending Balance	481	242	481	242	271
Amount for loans collectively evaluated for impairment	481		481		271
Loans individually evaluated for impairment	18		18
Loans collectively evaluated for impairment	51,272		51,272		51,795
Tax Exempt [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	79	173	71	168	168
Provision	(5)	(11)	3	(6)	(97)
Ending Balance	74	$ 162	74	$ 162	71
Amount for loans collectively evaluated for impairment	74		74		71
Loans collectively evaluated for impairment	$ 15,319		$ 15,319		$ 16,693

A valuation allowance for financing receivables that are expected to be uncollectible.

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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