Loans (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Segments of loan portfolio and allowance for loan losses [Abstract]
Total Loans	$ 543,755		$ 543,755		$ 540,612
Allowance for loan losses	6,816		6,816		7,098
Net loans	536,939		536,939		533,514
Individually evaluated for impairment	8,599		8,599		10,400
Collectively evaluated for impairment	535,156		535,156		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	6,658		6,658		6,765
Total	6,816	7,070	6,816	7,070
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	6,751	6,989	7,098	6,784
Charge-offs	(95)	(15)	(792)	(58)
Recoveries	10	6	30	29
Provision	150	90	480	315
Balance at end of period	6,816	7,070	6,816	7,070
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	187,315		187,315		187,101
Individually evaluated for impairment	324		324		342
Collectively evaluated for impairment	186,991		186,991		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	25		25		27
Collectively evaluated for impairment	861		861		919
Total	886	956	886	956
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	879	934	946	875
Charge-offs	0	(2)	(45)	(15)
Recoveries	0	1	0	3
Provision	7	23	(15)	93
Balance at end of period	886	956	886	956
Commercial and Agricultural [Member]
Segments of loan portfolio and allowance for loan losses [Abstract]
Total Loans	211,888		211,888		215,088
Individually evaluated for impairment	6,333		6,333		8,310
Collectively evaluated for impairment	205,555		205,555		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	97		97		305
Collectively evaluated for impairment	3,606		3,606		4,253
Total	3,703	4,412	3,703	4,412
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	3,809	4,240	4,558	4,437
Charge-offs	(11)	0	(486)	0
Recoveries	4	0	9	0
Provision	(99)	172	(378)	(25)
Balance at end of period	3,703	4,412	3,703	4,412
Construction [Member]
Segments of loan portfolio and allowance for loan losses [Abstract]
Total Loans	4,960		4,960		8,937
Individually evaluated for impairment	0		0		0
Collectively evaluated for impairment	4,960		4,960		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	23		23		50
Total	23	112	23	112
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	13	91	50	38
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision	10	21	(27)	74
Balance at end of period	23	112	23	112
Home Equity [Member]
Segments of loan portfolio and allowance for loan losses [Abstract]
Total Loans	63,931		63,931		67,217
Commercial [Member]
Segments of loan portfolio and allowance for loan losses [Abstract]
Total Loans	187,692		187,692		193,087
Agricultural [Member]
Segments of loan portfolio and allowance for loan losses [Abstract]
Total Loans	24,196		24,196		22,001
Consumer [Member]
Segments of loan portfolio and allowance for loan losses [Abstract]
Total Loans	8,798		8,798		9,563
Individually evaluated for impairment	0		0		15
Collectively evaluated for impairment	8,798		8,798		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	86	114	105	119
Charge-offs	(26)	(12)	(40)	(42)
Recoveries	6	5	21	26
Provision	20	7	0	11
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	56,664		56,664		54,029
Individually evaluated for impairment	1,942		1,942		1,733
Collectively evaluated for impairment	54,722		54,722		52,296
Other Agricultural Loans [Member]
Segments of loan portfolio and allowance for loan losses [Abstract]
Total Loans	11,519		11,519		9,541
State and Political Subdivision Loans [Member]
Segments of loan portfolio and allowance for loan losses [Abstract]
Total Loans	74,130		74,130		65,894
Individually evaluated for impairment	0		0		0
Collectively evaluated for impairment	74,130		74,130		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	450		450		330
Total	450	313	450	313
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	455	310	330	271
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision	(5)	3	120	42
Balance at end of period	450	313	450	313
Commercial and Other Loans [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	36		36		1
Collectively evaluated for impairment	1,127		1,127		941
Total	1,163	964	1,163	964
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	1,151	957	942	728
Charge-offs	(58)	(1)	(221)	(1)
Recoveries	0	0	0	0
Provision	70	8	442	237
Balance at end of period	1,163	964	1,163	964
Residential Mortgages [Member]
Segments of loan portfolio and allowance for loan losses [Abstract]
Total Loans	123,384		123,384		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	505		505		167
Total	505	199	505	199
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	358	343	167	316
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision	147	(144)	338	(117)
Balance at end of period	$ 505	$ 199	$ 505	$ 199