Loans And Allowance For Loan Losses (Schedule Of Impaired Loans) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Financing Receivable, Impaired [Line Items]
Impaired loans, with no related allowance, Recorded Investment	$ 4,805		$ 4,805		$ 3,350
Impaired loans, with no related allowance, Unpaid Principal Balance	5,010		5,010		3,574
Impaired loans, with related allowance, Recorded Investment	2,026		2,026		2,389
Impaired loans, with related allowance, Unpaid Principal Balance	4,101		4,101		4,464
Impaired Financing Receivable, Recorded Investment	6,831		6,831		5,739
Impaired Financing Receivable, Unpaid Principal Balance	9,111		9,111		8,038
Impaired loans, with related allowance, Related Allowance	371		371		373
Impaired loans, with no related allowance, Average Recorded Investment	4,395	$ 4,112	4,346	$ 4,931
Impaired loans, with no related allowance, Interest Recorded	60	33	198	78
Impaired loans, with related allowance, Average Recorded Investment	2,074	2,249	2,048	2,249
Impaired loans, with related allowance, Interest Recorded
Impaired loans, Average Recorded Investment, Total	6,469	6,361	6,394	7,180
Impaired loans, Interest Recorded, Total	60	33	198	78
Commercial Real Estate Mortgages [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans, with no related allowance, Recorded Investment	3,308		3,308		1,692
Impaired loans, with no related allowance, Unpaid Principal Balance	3,396		3,396		1,736
Impaired loans, with related allowance, Recorded Investment	659		659		531
Impaired loans, with related allowance, Unpaid Principal Balance	659		659		531
Impaired loans, with related allowance, Related Allowance	40		40		43
Impaired loans, with no related allowance, Average Recorded Investment	2,775	2,408	2,713	3,099
Impaired loans, with no related allowance, Interest Recorded	38	20	131	42
Impaired loans, with related allowance, Average Recorded Investment	533	405	551	405
Impaired loans, with related allowance, Interest Recorded
Commercial And Industrial [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans, with no related allowance, Recorded Investment	136		136		202
Impaired loans, with no related allowance, Unpaid Principal Balance	136		136		352
Impaired loans, with related allowance, Recorded Investment	219		219		224
Impaired loans, with related allowance, Unpaid Principal Balance	369		369		374
Impaired loans, with related allowance, Related Allowance	174		174		175
Impaired loans, with no related allowance, Average Recorded Investment	138	231	141	334
Impaired loans, with no related allowance, Interest Recorded	1	2	2	7
Impaired loans, with related allowance, Average Recorded Investment	220	226	221	228
Impaired loans, with related allowance, Interest Recorded
Commercial Construction And Land Development [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans, with related allowance, Recorded Investment	637		637		1,111
Impaired loans, with related allowance, Unpaid Principal Balance	2,562		2,562		3,036
Impaired loans, with related allowance, Related Allowance	60		60		58
Impaired loans, with no related allowance, Interest Recorded
Impaired loans, with related allowance, Average Recorded Investment	809	1,260	928	1,260
Impaired loans, with related allowance, Interest Recorded
Agriculture And Other Loans To Farmers [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans, with no related allowance, Recorded Investment	122		122		106
Impaired loans, with no related allowance, Unpaid Principal Balance	122		122		106
Impaired loans, with no related allowance, Average Recorded Investment	124	123	131	155
Impaired loans, with no related allowance, Interest Recorded	3	3	8	7
Impaired loans, with related allowance, Interest Recorded
Residential Real Estate Loans [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans, with no related allowance, Recorded Investment	1,223		1,223		1,332
Impaired loans, with no related allowance, Unpaid Principal Balance	1,340		1,340		1,362
Impaired loans, with related allowance, Recorded Investment	495		495		515
Impaired loans, with related allowance, Unpaid Principal Balance	495		495		515
Impaired loans, with related allowance, Related Allowance	87		87		97
Impaired loans, with no related allowance, Average Recorded Investment	1,342	1,332	1,344	1,325
Impaired loans, with no related allowance, Interest Recorded	17	8	55	21
Impaired loans, with related allowance, Average Recorded Investment	496	348	331	346
Impaired loans, with related allowance, Interest Recorded
Home Equity Loans [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans, with no related allowance, Recorded Investment	16		16		18
Impaired loans, with no related allowance, Unpaid Principal Balance	16		16		18
Impaired loans, with no related allowance, Average Recorded Investment	16	18	17	18
Impaired loans, with no related allowance, Interest Recorded			1	1
Impaired loans, with related allowance, Interest Recorded
Other Consumer Loans [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans, with no related allowance, Recorded Investment
Impaired loans, with no related allowance, Unpaid Principal Balance
Impaired loans, with related allowance, Recorded Investment	16		16		8
Impaired loans, with related allowance, Unpaid Principal Balance	16		16		8
Impaired loans, with no related allowance, Related Allowance
Impaired loans, with related allowance, Related Allowance	10		10
Impaired loans, with no related allowance, Interest Recorded	1		1
Impaired loans, with related allowance, Average Recorded Investment	16	$ 10	$ 17	$ 10
Impaired loans, with related allowance, Interest Recorded

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Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
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