Loans (Summary Of Age Analysis Of Past Due Loans Receivable) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Loans [Line Items]
Loans 30-59 Days Past Due	$ 15,329	$ 24,328
Loans 60-89 Days Past Due	3,801	6,609
Loans 90 or More Days Past Due	23,933	24,820
Total Past Due Loans	43,063	55,757
Current Loans	495,929	542,059
Total loans	538,992	597,816
Accruing Loans 90 or More Days Past Due	1,156	1,504
Commercial [Member]
Loans [Line Items]
Loans 30-59 Days Past Due	30	551
Loans 60-89 Days Past Due	382	34
Loans 90 or More Days Past Due	1,831	2,938
Total Past Due Loans	2,243	3,523
Current Loans	28,177	35,804
Total loans	30,420	39,327
Accruing Loans 90 or More Days Past Due	3	117
Agriculture [Member]
Loans [Line Items]
Loans 30-59 Days Past Due	59	268
Loans 60-89 Days Past Due		88
Loans 90 or More Days Past Due	343	458
Total Past Due Loans	402	814
Current Loans	4,563	5,333
Total loans	4,965	6,147
Accruing Loans 90 or More Days Past Due		3
Consumer Installment Loans [Member]
Loans [Line Items]
Loans 30-59 Days Past Due	660	822
Loans 60-89 Days Past Due	56	133
Loans 90 or More Days Past Due	187	221
Total Past Due Loans	903	1,176
Current Loans	30,297	37,346
Total loans	31,200	38,522
Accruing Loans 90 or More Days Past Due	72	222
All Other Loans [Member]
Loans [Line Items]
Loans 30-59 Days Past Due	66	26
Loans 60-89 Days Past Due	14	9
Loans 90 or More Days Past Due	7	33
Total Past Due Loans	87	68
Current Loans	100	150
Total loans	187	218
Accruing Loans 90 or More Days Past Due	7	33
Real Estate [Member]
Loans [Line Items]
Loans 30-59 Days Past Due	14,514	22,661
Loans 60-89 Days Past Due	3,349	6,345
Loans 90 or More Days Past Due	21,565	21,170
Total Past Due Loans	39,428	50,176
Current Loans	432,792	463,426
Total loans	472,220	513,602
Accruing Loans 90 or More Days Past Due	1,074	1,129
Real Estate [Member] | Commercial [Member]
Loans [Line Items]
Loans 30-59 Days Past Due	4,118	9,754
Loans 60-89 Days Past Due	884	2,294
Loans 90 or More Days Past Due	9,586	7,771
Total Past Due Loans	14,588	19,819
Current Loans	140,667	150,970
Total loans	155,255	170,789
Real Estate [Member] | Construction And Land Development [Member]
Loans [Line Items]
Loans 30-59 Days Past Due	2,106	595
Loans 60-89 Days Past Due	84	238
Loans 90 or More Days Past Due	912	5,280
Total Past Due Loans	3,102	6,113
Current Loans	22,110	26,276
Total loans	25,212	32,389
Real Estate [Member] | Residential 1-4 Family [Member]
Loans [Line Items]
Loans 30-59 Days Past Due	7,586	9,471
Loans 60-89 Days Past Due	1,858	1,412
Loans 90 or More Days Past Due	3,692	4,101
Total Past Due Loans	13,136	14,984
Current Loans	230,802	241,014
Total loans	243,938	255,998
Accruing Loans 90 or More Days Past Due	1,074	1,129
Real Estate [Member] | Multifamily [Member]
Loans [Line Items]
Loans 60-89 Days Past Due	331	1,777
Loans 90 or More Days Past Due	2,076	218
Total Past Due Loans	2,407	1,995
Current Loans	10,229	12,325
Total loans	12,636	14,320
Real Estate [Member] | Farmland [Member]
Loans [Line Items]
Loans 30-59 Days Past Due	704	2,841
Loans 60-89 Days Past Due	192	624
Loans 90 or More Days Past Due	5,299	3,800
Total Past Due Loans	6,195	7,265
Current Loans	28,984	32,841
Total loans	$ 35,179	$ 40,106