Loans (Summary Of Age Analysis Of Past Due Loans Receivable) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Loans [Line Items]
Loans 30-59 Days Past Due	$ 7,481	$ 16,492
Loans 60-89 Days Past Due	1,192	1,956
Loans 90 or More Days Past Due	16,702	21,002
Total Past Due Loans	25,375	39,450
Current Loans	486,001	482,913
Total loans	511,376	522,363
Accruing Loans 90 or More Days Past Due		551
Commercial [Member]
Loans [Line Items]
Loans 30-59 Days Past Due	334	135
Loans 60-89 Days Past Due	39	12
Loans 90 or More Days Past Due	922	2,104
Total Past Due Loans	1,295	2,251
Current Loans	24,700	26,063
Total loans	25,995	28,314
Accruing Loans 90 or More Days Past Due		2
Agriculture [Member]
Loans [Line Items]
Loans 30-59 Days Past Due		117
Loans 60-89 Days Past Due	25	12
Loans 90 or More Days Past Due	9	360
Total Past Due Loans	34	489
Current Loans	4,423	3,839
Total loans	4,457	4,328
Consumer Installment Loans [Member]
Loans [Line Items]
Loans 30-59 Days Past Due	161	506
Loans 60-89 Days Past Due	40	66
Loans 90 or More Days Past Due	23	55
Total Past Due Loans	224	627
Current Loans	26,955	28,818
Total loans	27,179	29,445
Accruing Loans 90 or More Days Past Due		54
All Other Loans [Member]
Loans [Line Items]
Loans 30-59 Days Past Due	12	19
Loans 60-89 Days Past Due	3	7
Total Past Due Loans	15	26
Current Loans	153	152
Total loans	168	178
Real Estate [Member]
Loans [Line Items]
Loans 30-59 Days Past Due	6,974	15,715
Loans 60-89 Days Past Due	1,085	1,859
Loans 90 or More Days Past Due	15,748	18,483
Total Past Due Loans	23,807	36,057
Current Loans	429,770	424,041
Total loans	453,577	460,098
Accruing Loans 90 or More Days Past Due		495
Real Estate [Member] | Commercial [Member]
Loans [Line Items]
Loans 30-59 Days Past Due	2,151	4,164
Loans 60-89 Days Past Due		998
Loans 90 or More Days Past Due	5,406	8,889
Total Past Due Loans	7,557	14,051
Current Loans	137,323	135,884
Total loans	144,880	149,935
Real Estate [Member] | Construction And Land Development [Member]
Loans [Line Items]
Loans 30-59 Days Past Due	188	653
Loans 60-89 Days Past Due	17
Loans 90 or More Days Past Due	1,912	254
Total Past Due Loans	2,117	907
Current Loans	20,828	23,420
Total loans	22,945	24,327
Real Estate [Member] | Residential 1-4 Family [Member]
Loans [Line Items]
Loans 30-59 Days Past Due	3,909	9,031
Loans 60-89 Days Past Due	1,068	861
Loans 90 or More Days Past Due	2,566	3,027
Total Past Due Loans	7,543	12,919
Current Loans	232,971	227,282
Total loans	240,514	240,201
Accruing Loans 90 or More Days Past Due		304
Real Estate [Member] | Multifamily [Member]
Loans [Line Items]
Loans 30-59 Days Past Due	90	90
Loans 90 or More Days Past Due	442	442
Total Past Due Loans	532	532
Current Loans	12,811	12,035
Total loans	13,343	12,567
Real Estate [Member] | Farmland [Member]
Loans [Line Items]
Loans 30-59 Days Past Due	636	1,777
Loans 90 or More Days Past Due	5,422	5,871
Total Past Due Loans	6,058	7,648
Current Loans	25,837	25,420
Total loans	31,895	33,068
Accruing Loans 90 or More Days Past Due		$ 191