Loans (Summary Of Impaired Loans) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Loans [Line Items]
Average Recorded Investment	$ 41,078	$ 50,944
Interest Income Recognized	327	1,499
Recorded Investment	40,971	41,176
Unpaid Principal Balance	44,970	45,125
Related Allowance	3,625	4,206
With No Related Allowance Recorded [Member] | Commercial [Member]
Loans [Line Items]
Average Recorded Investment	316	717
Interest Income Recognized		7
Recorded Investment	317	315
Unpaid Principal Balance	317	423
With No Related Allowance Recorded [Member] | Agriculture [Member]
Loans [Line Items]
Average Recorded Investment	66	71
Interest Income Recognized	1	6
Recorded Investment	72	60
Unpaid Principal Balance	89	60
With No Related Allowance Recorded [Member] | Consumer Installment Loans [Member]
Loans [Line Items]
Average Recorded Investment	7	51
Interest Income Recognized		2
Recorded Investment	1	12
Unpaid Principal Balance	1	12
With No Related Allowance Recorded [Member] | All Other Loans [Member]
Loans [Line Items]
Average Recorded Investment
Interest Income Recognized
Recorded Investment
Unpaid Principal Balance
Related Allowance
With No Related Allowance Recorded [Member] | Real Estate [Member] | Commercial [Member]
Loans [Line Items]
Average Recorded Investment	12,577	16,270
Interest Income Recognized	72	300
Recorded Investment	15,346	9,807
Unpaid Principal Balance	17,522	10,276
With No Related Allowance Recorded [Member] | Real Estate [Member] | Construction And Land Development [Member]
Loans [Line Items]
Average Recorded Investment	322	2,246
Interest Income Recognized	1	26
Recorded Investment	307	336
Unpaid Principal Balance	325	345
With No Related Allowance Recorded [Member] | Real Estate [Member] | Residential 1-4 Family [Member]
Loans [Line Items]
Average Recorded Investment	2,815	4,276
Interest Income Recognized	34	126
Recorded Investment	3,073	2,557
Unpaid Principal Balance	3,327	2,727
With No Related Allowance Recorded [Member] | Real Estate [Member] | Multifamily [Member]
Loans [Line Items]
Average Recorded Investment	325	652
Interest Income Recognized	4	16
Recorded Investment	324	326
Unpaid Principal Balance	324	326
With No Related Allowance Recorded [Member] | Real Estate [Member] | Farmland [Member]
Loans [Line Items]
Average Recorded Investment	4,472	4,260
Interest Income Recognized	63	166
Recorded Investment	6,411	2,533
Unpaid Principal Balance	7,158	2,670
With An Allowance Recorded [Member] | Commercial [Member]
Loans [Line Items]
Average Recorded Investment	669	1,012
Interest Income Recognized	1	3
Recorded Investment	666	672
Unpaid Principal Balance	733	740
Related Allowance	145	208
With An Allowance Recorded [Member] | Agriculture [Member]
Loans [Line Items]
Average Recorded Investment	47	138
Interest Income Recognized	1	4
Recorded Investment	39	55
Unpaid Principal Balance	39	71
Related Allowance	39	43
With An Allowance Recorded [Member] | Consumer Installment Loans [Member]
Loans [Line Items]
Average Recorded Investment	22	22
Interest Income Recognized		2
Recorded Investment	21	22
Unpaid Principal Balance	21	22
Related Allowance	2	3
With An Allowance Recorded [Member] | All Other Loans [Member]
Loans [Line Items]
Average Recorded Investment
Interest Income Recognized
Recorded Investment
Unpaid Principal Balance
Related Allowance
With An Allowance Recorded [Member] | Real Estate [Member] | Commercial [Member]
Loans [Line Items]
Average Recorded Investment	9,124	12,080
Interest Income Recognized	54	441
Recorded Investment	6,155	12,092
Unpaid Principal Balance	6,570	13,924
Related Allowance	1,340	1,942
With An Allowance Recorded [Member] | Real Estate [Member] | Construction And Land Development [Member]
Loans [Line Items]
Average Recorded Investment	559	492
Interest Income Recognized	3	9
Recorded Investment	563	554
Unpaid Principal Balance	654	640
Related Allowance	147	138
With An Allowance Recorded [Member] | Real Estate [Member] | Residential 1-4 Family [Member]
Loans [Line Items]
Average Recorded Investment	5,321	3,980
Interest Income Recognized	58	260
Recorded Investment	5,183	5,458
Unpaid Principal Balance	5,385	5,824
Related Allowance	1,350	1,180
With An Allowance Recorded [Member] | Real Estate [Member] | Multifamily [Member]
Loans [Line Items]
Average Recorded Investment	268	561
Interest Income Recognized	4	17
Recorded Investment	267	268
Unpaid Principal Balance	267	268
Related Allowance	37	39
With An Allowance Recorded [Member] | Real Estate [Member] | Farmland [Member]
Loans [Line Items]
Average Recorded Investment	4,168	4,116
Interest Income Recognized	31	114
Recorded Investment	2,226	6,109
Unpaid Principal Balance	2,238	6,797
Related Allowance	$ 565	$ 653