Loans, Credit Quality Indicator (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
Financing Receivable, Recorded Investment [Line Items]
Total Loans	$ 753,634,000	$ 746,094,000	$ 738,194,000
Loan balance for reviewing high risk loans minimum	250,000
Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	51,774,000	50,960,000	43,979,000
Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	19,188,000	16,689,000	12,654,000
Commercial Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	48,611,000	51,259,000	54,608,000
Residential Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	10,030,000	11,221,000	9,779,000
Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	341,845,000	332,231,000	337,835,000
Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	202,878,000	203,753,000	202,159,000
Farmland [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	51,572,000	49,951,000	47,886,000
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	21,705,000	22,820,000	23,693,000
Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	6,031,000	7,210,000	5,601,000
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	700,061,000	686,072,000
Pass [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	47,730,000	46,230,000
Pass [Member] | Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	19,005,000	16,504,000
Pass [Member] | Commercial Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	42,481,000	45,063,000
Pass [Member] | Residential Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	10,030,000	11,221,000
Pass [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	322,579,000	309,828,000
Pass [Member] | Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	182,105,000	180,550,000
Pass [Member] | Farmland [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	49,247,000	47,548,000
Pass [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	21,049,000	22,115,000
Pass [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	5,835,000	7,013,000
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	25,029,000	27,139,000
Special Mention [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	2,329,000	2,905,000
Special Mention [Member] | Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	27,000	27,000
Special Mention [Member] | Commercial Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	1,665,000	1,741,000
Special Mention [Member] | Residential Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Special Mention [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	9,198,000	11,220,000
Special Mention [Member] | Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	10,838,000	10,582,000
Special Mention [Member] | Farmland [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	767,000	415,000
Special Mention [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	203,000	249,000
Special Mention [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	2,000	0
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	28,544,000	32,883,000
Substandard [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	1,715,000	1,825,000
Substandard [Member] | Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	156,000	158,000
Substandard [Member] | Commercial Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	4,465,000	4,455,000
Substandard [Member] | Residential Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Substandard [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	10,068,000	11,183,000
Substandard [Member] | Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	9,935,000	12,621,000
Substandard [Member] | Farmland [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	1,558,000	1,988,000
Substandard [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	453,000	456,000
Substandard [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	$ 194,000	$ 197,000