Loans (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Segments of loan portfolio and allowance for loan losses [Abstract]
Total Loans	$ 539,877		$ 539,877		$ 540,612
Allowance for loan losses	6,751		6,751		7,098
Net loans	533,126		533,126		533,514
Individually evaluated for impairment	9,737		9,737		10,400
Collectively evaluated for impairment	530,140		530,140		530,212
Summary of allowance for loan losses into amount required for loans individually evaluated for impairment and the amount required for loans collectively evaluated for impairment [Abstract]
Individually evaluated for impairment	158		158		333
Collectively evaluated for impairment	6,593		6,593		6,765
Total	6,751	6,989	6,751	6,989
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	7,233	6,928	7,098	6,784
Charge-offs	(641)	(23)	(697)	(43)
Recoveries	9	9	20	23
Provision	150	75	330	225
Balance at end of period	6,751	6,989	6,751	6,989
Minimum [Member]
Segments of loan portfolio and allowance for loan losses [Abstract]
Number of days past for loan to be considered impaired, Minimum			90 days
First Mortgage [Member] | Minimum [Member]
Segments of loan portfolio and allowance for loan losses [Abstract]
Period of mortgage on real estate			15 years
First Mortgage [Member] | Maximum [Member]
Segments of loan portfolio and allowance for loan losses [Abstract]
Period of mortgage on real estate			30 years
Second Mortgage [Member] | Maximum [Member]
Segments of loan portfolio and allowance for loan losses [Abstract]
Period of mortgage on real estate			15 years
Residential [Member]
Segments of loan portfolio and allowance for loan losses [Abstract]
Total Loans	187,183		187,183		187,101
Individually evaluated for impairment	330		330		342
Collectively evaluated for impairment	186,853		186,853		186,759
Summary of allowance for loan losses into amount required for loans individually evaluated for impairment and the amount required for loans collectively evaluated for impairment [Abstract]
Individually evaluated for impairment	27		27		27
Collectively evaluated for impairment	852		852		919
Total	879	934	879	934
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	886	913	946	875
Charge-offs	(7)	(13)	(45)	(13)
Recoveries	0	0	0	2
Provision	0	34	(22)	70
Balance at end of period	879	934	879	934
Commercial and Agricultural [Member]
Segments of loan portfolio and allowance for loan losses [Abstract]
Total Loans	210,786		210,786		215,088
Individually evaluated for impairment	7,069		7,069		8,310
Collectively evaluated for impairment	203,717		203,717		206,778
Summary of allowance for loan losses into amount required for loans individually evaluated for impairment and the amount required for loans collectively evaluated for impairment [Abstract]
Individually evaluated for impairment	101		101		305
Collectively evaluated for impairment	3,708		3,708		4,253
Total	3,809	4,240	3,809	4,240
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	4,530	4,416	4,558	4,437
Charge-offs	(465)	0	(475)	0
Recoveries	3	0	5	0
Provision	(259)	(176)	(279)	(197)
Balance at end of period	3,809	4,240	3,809	4,240
Construction [Member]
Segments of loan portfolio and allowance for loan losses [Abstract]
Total Loans	3,474		3,474		8,937
Individually evaluated for impairment	0		0		0
Collectively evaluated for impairment	3,474		3,474		8,937
Summary of allowance for loan losses into amount required for loans individually evaluated for impairment and the amount required for loans collectively evaluated for impairment [Abstract]
Individually evaluated for impairment	0		0		0
Collectively evaluated for impairment	13		13		50
Total	13	91	13	91
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	8	78	50	38
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision	5	13	(37)	53
Balance at end of period	13	91	13	91
Home Equity [Member]
Segments of loan portfolio and allowance for loan losses [Abstract]
Total Loans	64,708		64,708		67,217
Commercial [Member]
Segments of loan portfolio and allowance for loan losses [Abstract]
Total Loans	186,977		186,977		193,087
Agricultural [Member]
Segments of loan portfolio and allowance for loan losses [Abstract]
Total Loans	23,809		23,809		22,001
Consumer [Member]
Segments of loan portfolio and allowance for loan losses [Abstract]
Total Loans	8,692		8,692		9,563
Individually evaluated for impairment	15		15		15
Collectively evaluated for impairment	8,677		8,677		9,548
Summary of allowance for loan losses into amount required for loans individually evaluated for impairment and the amount required for loans collectively evaluated for impairment [Abstract]
Individually evaluated for impairment	0		0		0
Collectively evaluated for impairment	86		86		105
Total	86	114	86	114
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	83	118	105	119
Charge-offs	(6)	(10)	(14)	(30)
Recoveries	6	9	15	21
Provision	3	(3)	(20)	4
Balance at end of period	86	114	86	114
Other Commercial and Agricultural Loans [Member]
Segments of loan portfolio and allowance for loan losses [Abstract]
Total Loans	58,090		58,090		54,029
Individually evaluated for impairment	2,323		2,323		1,733
Collectively evaluated for impairment	55,767		55,767		52,296
Summary of allowance for loan losses into amount required for loans individually evaluated for impairment and the amount required for loans collectively evaluated for impairment [Abstract]
Individually evaluated for impairment	30		30		1
Collectively evaluated for impairment	1,121		1,121		941
Total	1,151	957	1,151	957
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	1,173	700	942	728
Charge-offs	(163)	0	(163)	0
Recoveries	0	0	0	0
Provision	141	257	372	229
Balance at end of period	1,151	957	1,151	957
Other Agricultural Loans [Member]
Segments of loan portfolio and allowance for loan losses [Abstract]
Total Loans	10,082		10,082		9,541
State and Political Subdivision Loans [Member]
Segments of loan portfolio and allowance for loan losses [Abstract]
Total Loans	71,652		71,652		65,894
Individually evaluated for impairment	0		0		0
Collectively evaluated for impairment	71,652		71,652		65,894
Summary of allowance for loan losses into amount required for loans individually evaluated for impairment and the amount required for loans collectively evaluated for impairment [Abstract]
Individually evaluated for impairment	0		0		0
Collectively evaluated for impairment	455		455		330
Total	455	310	455	310
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	396	303	330	271
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision	59	7	125	39
Balance at end of period	455	310	455	310
Residential Mortgages [Member]
Segments of loan portfolio and allowance for loan losses [Abstract]
Total Loans	122,475		122,475		119,884
Unallocated [Member]
Summary of allowance for loan losses into amount required for loans individually evaluated for impairment and the amount required for loans collectively evaluated for impairment [Abstract]
Individually evaluated for impairment	0		0		0
Collectively evaluated for impairment	358		358		167
Total	358	343	358	343
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	157	400	167	316
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision	201	(57)	191	27
Balance at end of period	$ 358	$ 343	$ 358	$ 343