Loans, Past Due (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012
Financing Receivable, Recorded Investment, Aging [Abstract]
Accruing Loans 30 to 89 Days Past Dues	$ 7,912	$ 14,912
Accruing Loans 90 Days or More Past Due	0	4
Total Accruing Loans Past Due	7,912	14,916
Nonaccrual Loans	24,685	29,851
Current Loans	711,546	702,283
Total Loans	744,143	747,050	716,361
Commercial [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Accruing Loans 30 to 89 Days Past Dues	691	798
Accruing Loans 90 Days or More Past Due	0	0
Total Accruing Loans Past Due	691	798
Nonaccrual Loans	2,432	1,033
Current Loans	48,035	53,853
Total Loans	51,158	55,684	55,274
Agricultural [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Accruing Loans 30 to 89 Days Past Dues	0	28
Accruing Loans 90 Days or More Past Due	0	0
Total Accruing Loans Past Due	0	28
Nonaccrual Loans	0	39
Current Loans	14,177	6,144
Total Loans	14,177	6,211	11,284
Commercial Construction [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Accruing Loans 30 to 89 Days Past Dues	494	1,310
Accruing Loans 90 Days or More Past Due	0	0
Total Accruing Loans Past Due	494	1,310
Nonaccrual Loans	10,166	14,032
Current Loans	42,039	38,466
Total Loans	52,699	53,808	56,368
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	8,189	5,852
Total Loans	8,189	5,852	4,169
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Accruing Loans 30 to 89 Days Past Dues	2,244	3,771
Accruing Loans 90 Days or More Past Due	0	0
Total Accruing Loans Past Due	2,244	3,771
Nonaccrual Loans	5,234	6,630
Current Loans	317,839	323,985
Total Loans	325,317	334,386	308,936
Residential RE [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Accruing Loans 30 to 89 Days Past Dues	3,651	8,223
Accruing Loans 90 Days or More Past Due	0	0
Total Accruing Loans Past Due	3,651	8,223
Nonaccrual Loans	4,340	5,430
Current Loans	200,571	190,192
Total Loans	208,562	203,845	193,190
Farmland [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Accruing Loans 30 to 89 Days Past Dues	349	140
Accruing Loans 90 Days or More Past Due	0	0
Total Accruing Loans Past Due	349	140
Nonaccrual Loans	2,307	2,413
Current Loans	47,142	46,504
Total Loans	49,798	49,057	48,748
Consumer [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Accruing Loans 30 to 89 Days Past Dues	483	637
Accruing Loans 90 Days or More Past Due	0	4
Total Accruing Loans Past Due	483	641
Nonaccrual Loans	206	256
Current Loans	26,750	28,881
Total Loans	27,439	29,778	29,652
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	0	18
Current Loans	6,804	8,406
Total Loans	$ 6,804	$ 8,429	$ 8,740