Loans, Past Due (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
Financing Receivable, Recorded Investment, Aging [Abstract]
Accruing Loans 30 to 89 Days Past Dues	$ 12,682	$ 14,912
Accruing Loans 90 Days or More Past Due	2	4
Total Accruing Loans Past Due	12,684	14,916
Nonaccrual Loans	24,163	29,851
Current Loans	711,197	702,283
Total Loans	748,044	747,050	726,522
Commercial [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Accruing Loans 30 to 89 Days Past Dues	689	798
Accruing Loans 90 Days or More Past Due	0	0
Total Accruing Loans Past Due	689	798
Nonaccrual Loans	1,616	1,033
Current Loans	46,857	53,853
Total Loans	49,162	55,684	54,281
Agricultural [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Accruing Loans 30 to 89 Days Past Dues	11	28
Accruing Loans 90 Days or More Past Due	0	0
Total Accruing Loans Past Due	11	28
Nonaccrual Loans	0	39
Current Loans	17,602	6,144
Total Loans	17,613	6,211	12,594
Commercial Construction [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Accruing Loans 30 to 89 Days Past Dues	686	1,310
Accruing Loans 90 Days or More Past Due	0	0
Total Accruing Loans Past Due	686	1,310
Nonaccrual Loans	8,483	14,032
Current Loans	35,781	38,466
Total Loans	44,950	53,808	54,052
Residential Construction [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Accruing Loans 30 to 89 Days Past Dues	0	0
Accruing Loans 90 Days or More Past Due	0	0
Total Accruing Loans Past Due	0	0
Nonaccrual Loans	0	0
Current Loans	4,680	5,852
Total Loans	4,680	5,852	6,038
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Accruing Loans 30 to 89 Days Past Dues	6,127	3,771
Accruing Loans 90 Days or More Past Due	0	0
Total Accruing Loans Past Due	6,127	3,771
Nonaccrual Loans	5,325	6,630
Current Loans	323,992	323,985
Total Loans	335,444	334,386	311,393
Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Accruing Loans 30 to 89 Days Past Dues	4,543	8,223
Accruing Loans 90 Days or More Past Due	0	0
Total Accruing Loans Past Due	4,543	8,223
Nonaccrual Loans	4,852	5,430
Current Loans	198,363	190,192
Total Loans	207,758	203,845	197,259
Farmland [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Accruing Loans 30 to 89 Days Past Dues	137	140
Accruing Loans 90 Days or More Past Due	0	0
Total Accruing Loans Past Due	137	140
Nonaccrual Loans	3,606	2,413
Current Loans	45,545	46,504
Total Loans	49,288	49,057	49,478
Consumer [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Accruing Loans 30 to 89 Days Past Dues	489	637
Accruing Loans 90 Days or More Past Due	2	4
Total Accruing Loans Past Due	491	641
Nonaccrual Loans	272	256
Current Loans	25,472	28,881
Total Loans	26,235	29,778	29,585
Other [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Accruing Loans 30 to 89 Days Past Dues	0	5
Accruing Loans 90 Days or More Past Due	0	0
Total Accruing Loans Past Due	0	5
Nonaccrual Loans	9	18
Current Loans	12,905	8,406
Total Loans	$ 12,914	$ 8,429	$ 11,842