Loans (Details 4) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	$ 704,880	$ 689,608
Days Past Due
30-59	1,660	695
60-89		151
90+ and Still Accruing		15
Non-Accruing	12,227	17,309
Accruing TDR	1,332	17
Credit Risk Grades, Pass
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	635,653	614,272
Credit Risk Grades, Special Mention
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	20,494	24,206
Credit Risk Grades, Substandard
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	48,733	51,130
Real Estate Secured
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	516,588	493,008
Real Estate Secured | Multi-family residential
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	19,747	21,467
Real Estate Secured | Multi-family residential | Credit Risk Grades, Pass
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	19,153	20,869
Real Estate Secured | Multi-family residential | Credit Risk Grades, Substandard
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	594	598
Real Estate Secured | Residential 1 to 4 family
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	46,894	41,444
Days Past Due
30-59		199
Non-Accruing	240	835
Accruing TDR	364
Real Estate Secured | Residential 1 to 4 family | Credit Risk Grades, Pass
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	45,126	40,234
Real Estate Secured | Residential 1 to 4 family | Credit Risk Grades, Special Mention
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	5	6
Real Estate Secured | Residential 1 to 4 family | Credit Risk Grades, Substandard
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	1,763	1,204
Real Estate Secured | Home equity lines of credit
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	32,852	31,863
Days Past Due
60-89		47
Non-Accruing	57	58
Real Estate Secured | Home equity lines of credit | Credit Risk Grades, Pass
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	31,393	30,808
Real Estate Secured | Home equity lines of credit | Credit Risk Grades, Special Mention
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	406
Real Estate Secured | Home equity lines of credit | Credit Risk Grades, Substandard
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	1,053	1,055
Real Estate Secured | Commercial
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	391,159	372,592
Days Past Due
Non-Accruing	703	928
Real Estate Secured | Commercial | Credit Risk Grades, Pass
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	352,656	332,968
Real Estate Secured | Commercial | Credit Risk Grades, Special Mention
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	12,774	14,235
Real Estate Secured | Commercial | Credit Risk Grades, Substandard
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	25,729	25,389
Real Estate Secured | Farmland
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	25,936	25,642
Days Past Due
Non-Accruing		1,077
Real Estate Secured | Farmland | Credit Risk Grades, Pass
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	21,878	20,492
Real Estate Secured | Farmland | Credit Risk Grades, Special Mention
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	3,249	3,260
Real Estate Secured | Farmland | Credit Risk Grades, Substandard
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	809	1,890
Commercial
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	148,863	147,064
Commercial | Commercial and industrial
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	120,988	125,340
Days Past Due
30-59	1,607	446
60-89		104
90+ and Still Accruing		15
Non-Accruing	3,655	4,657
Accruing TDR	214	17
Commercial | Commercial and industrial | Credit Risk Grades, Pass
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	108,905	114,126
Commercial | Commercial and industrial | Credit Risk Grades, Special Mention
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	3,610	2,245
Commercial | Commercial and industrial | Credit Risk Grades, Substandard
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	8,473	8,969
Commercial | Agriculture
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	27,820	21,663
Days Past Due
30-59	53
Non-Accruing	831	907
Commercial | Agriculture | Credit Risk Grades, Pass
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	25,996	19,771
Commercial | Agriculture | Credit Risk Grades, Special Mention
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	105	106
Commercial | Agriculture | Credit Risk Grades, Substandard
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	1,719	1,786
Commercial | Other
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	55	61
Commercial | Other | Credit Risk Grades, Pass
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	55	61
Construction
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	10,894	19,716
Construction | Single family residential
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	8,803	8,074
Construction | Single family residential | Credit Risk Grades, Pass
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	8,803	8,074
Construction | Single family residential - Spec.
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	847	535
Construction | Single family residential - Spec. | Credit Risk Grades, Pass
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	847	535
Construction | Multi-family
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	767	778
Construction | Multi-family | Credit Risk Grades, Pass
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	767	778
Construction | Commercial
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	477	10,329
Days Past Due
Non-Accruing		1,380
Construction | Commercial | Credit Risk Grades, Pass
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans		8,469
Construction | Commercial | Credit Risk Grades, Substandard
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	477	1,860
Land
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	23,816	24,664
Days Past Due
30-59		50
Non-Accruing	6,640	7,182
Accruing TDR	754
Land | Credit Risk Grades, Pass
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	15,718	12,461
Land | Credit Risk Grades, Special Mention
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	140	4,124
Land | Credit Risk Grades, Substandard
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	7,958	8,079
Installment loans to individuals
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	4,527	4,895
Days Past Due
Non-Accruing	101	285
Installment loans to individuals | Credit Risk Grades, Pass
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	4,164	4,365
Installment loans to individuals | Credit Risk Grades, Special Mention
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	205	230
Installment loans to individuals | Credit Risk Grades, Substandard
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	158	300
All other loans (including overdrafts)
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	192	261
All other loans (including overdrafts) | Credit Risk Grades, Pass
Loan portfolio by internal risk grading system as well as certain other information concerning the credit quality
Total Gross loans	$ 192	$ 261