Loans And Allowance For Loan Losses (Schedule Of Allowance For Loan Losses By Portfolio Segment) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	$ 9,439	$ 8,969	$ 8,969
Charged off	(164)	(169)	(1,619)
Recoveries	74	183	304
Provision	465	495	1,785
Ending Balance	9,814	9,478	9,439
Amount for loans individually evaluated for impairment	433	909	373
Amount for loans collectively evaluated for impairment	9,381	8,569	9,066
Loans individually evaluated for impairment	5,797	6,091	5,739
Loans collectively evaluated for impairment	999,030	933,629	984,227
Commercial Real Estate Mortgages [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	4,246	4,468	4,468
Charged off	(34)	(25)	(667)
Recoveries	6	34	98
Provision	449	23	347
Ending Balance	4,667	4,500	4,246
Amount for loans individually evaluated for impairment	42	669	43
Amount for loans collectively evaluated for impairment	4,625	3,831	4,203
Loans individually evaluated for impairment	2,371	3,687	2,223
Loans collectively evaluated for impairment	391,148	339,496	368,779
Commercial And Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	1,236	929	929
Charged off	(89)	(75)	(323)
Recoveries	1	1	36
Provision	85	219	594
Ending Balance	1,233	1,074	1,236
Amount for loans individually evaluated for impairment	175	200	175
Amount for loans collectively evaluated for impairment	1,058	874	1,061
Loans individually evaluated for impairment	316	578	426
Loans collectively evaluated for impairment	78,324	81,919	79,485
Commercial Construction And Land Development [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	184	$ 145	145
Charged off
Recoveries
Provision	47	$ (38)	39
Ending Balance	231	107	184
Amount for loans individually evaluated for impairment	98		58
Amount for loans collectively evaluated for impairment	133	107	126
Loans individually evaluated for impairment	1,111	1,260	1,111
Loans collectively evaluated for impairment	24,084	24,465	23,815
Agriculture And Other Loans To Farmers [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	307	277	277
Charged off		(18)	(72)
Recoveries	40	12	18
Provision	18	63	84
Ending Balance	365	334	307
Amount for loans individually evaluated for impairment		39
Amount for loans collectively evaluated for impairment	365	295	307
Loans individually evaluated for impairment	129	168	106
Loans collectively evaluated for impairment	31,958	31,380	30,897
Residential Real Estate Mortgages [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	2,747	$ 2,714	2,714
Charged off	(31)		(70)
Recoveries	20	$ 129	129
Provision	(115)	32	(26)
Ending Balance	2,621	2,875	2,747
Amount for loans individually evaluated for impairment	118		97
Amount for loans collectively evaluated for impairment	2,503	2,875	2,650
Loans individually evaluated for impairment	1,845	388	1,847
Loans collectively evaluated for impairment	400,546	377,490	404,805
Consumer Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	111	94	94
Charged off	(10)	(11)	(111)
Recoveries	6	7	22
Provision	1	55	106
Ending Balance	108	145	111
Amount for loans collectively evaluated for impairment	108	145	111
Loans individually evaluated for impairment	8		8
Loans collectively evaluated for impairment	7,385	11,355	9,690
Home Equity Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	561	271	271
Charged off		$ (40)	(376)
Recoveries	1		1
Provision	(23)	$ 136	665
Ending Balance	539	367	561
Amount for loans individually evaluated for impairment		1
Amount for loans collectively evaluated for impairment	539	366	561
Loans individually evaluated for impairment	17	10	18
Loans collectively evaluated for impairment	49,551	50,948	51,512
Tax Exempt [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	47	$ 71	71
Charged off
Recoveries
Provision	3	$ 5	(24)
Ending Balance	50	76	47
Amount for loans collectively evaluated for impairment	50	76	47
Loans collectively evaluated for impairment	$ 16,034	$ 16,576	$ 15,244

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 recovery of financing receivables doubtful of collection that were previously charged off.

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Amount of direct write-downs of financing receivables charged against the allowance.

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.11)
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

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