Loans and Allowance for Loan Losses (Details 1) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Dec. 31, 2015
Allowance for loan losses:
Balance	$ 5,922	$ 5,320
Charge-offs	(137)	(143)
Recoveries	34	1,728
Provision for loan losses	50	(1,000)
Balance	5,869	5,905
Allowance for loan losses:
Individually evaluated for loss			$ 75	$ 88
Collectively evaluated for loss			5,794	5,834
Total	5,869	5,320	5,869	5,922
Loan balances:
Individually evaluated for loss			7,285	6,837
Collectively evaluated for loss			418,614	418,979
Total			419,879	419,923
Residential Real Estate [Member]
Allowance for loan losses:
Balance	925	755
Charge-offs	0	0
Recoveries	2	2
Provision for loan losses	(63)	629
Balance	864	1,386
Allowance for loan losses:
Individually evaluated for loss			32	78
Collectively evaluated for loss			832	847
Total	925	755	864	925
Loan balances:
Individually evaluated for loss			1,285	752
Collectively evaluated for loss			131,036	131,178
Total			132,321	131,930
Construction Loans [Member]
Allowance for loan losses:
Balance	77	762
Charge-offs	0	0
Recoveries	0	1,715
Provision for loan losses	5	(2,374)
Balance	82	103
Allowance for loan losses:
Individually evaluated for loss			0	0
Collectively evaluated for loss			82	77
Total	77	762	82	77
Loan balances:
Individually evaluated for loss			2,119	2,220
Collectively evaluated for loss			13,149	12,823
Total			15,268	15,043
Commercial Real Estate [Member]
Allowance for loan losses:
Balance	1,740	1,832
Charge-offs	0	0
Recoveries	0	0
Provision for loan losses	91	(232)
Balance	1,831	1,600
Allowance for loan losses:
Individually evaluated for loss			0	0
Collectively evaluated for loss			1,831	1,740
Total	1,740	1,832	1,831	1,740
Loan balances:
Individually evaluated for loss			2,427	2,429
Collectively evaluated for loss			116,054	116,554
Total			118,481	118,983
Commercial Loan [Member]
Allowance for loan losses:
Balance	1,530	836
Charge-offs	0	0
Recoveries	19	2
Provision for loan losses	(165)	677
Balance	1,384	1,515
Allowance for loan losses:
Individually evaluated for loss			35	0
Collectively evaluated for loss			1,349	1,530
Total	1,530	836	1,384	1,530
Loan balances:
Individually evaluated for loss			645	620
Collectively evaluated for loss			58,746	60,680
Total			59,391	61,300
Agriculture Loans [Member]
Allowance for loan losses:
Balance	1,428	915
Charge-offs	0	0
Recoveries	0	0
Provision for loan losses	55	189
Balance	1,483	1,104
Allowance for loan losses:
Individually evaluated for loss			0	0
Collectively evaluated for loss			1,483	1,428
Total	1,428	915	1,483	1,428
Loan balances:
Individually evaluated for loss			184	189
Collectively evaluated for loss			72,974	70,841
Total			73,158	71,030
Municipal Loans [Member]
Allowance for loan losses:
Balance	23	51
Charge-offs	0	(88)
Recoveries	0	0
Provision for loan losses	1	62
Balance	24	25
Allowance for loan losses:
Individually evaluated for loss			0	0
Collectively evaluated for loss			24	23
Total	23	51	24	23
Loan balances:
Individually evaluated for loss			591	591
Collectively evaluated for loss			7,145	7,044
Total			7,736	7,635
Consumer Loan [Member]
Allowance for loan losses:
Balance	199	169
Charge-offs	(137)	(55)
Recoveries	13	9
Provision for loan losses	126	49
Balance	201	172
Allowance for loan losses:
Individually evaluated for loss			8	10
Collectively evaluated for loss			193	189
Total	$ 199	$ 169	201	199
Loan balances:
Individually evaluated for loss			34	36
Collectively evaluated for loss			19,510	19,859
Total			$ 19,544	$ 19,895