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Loans and Allowance for Loan Losses (Details 4) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Impaired and Restructured Loans with or with no related allowance recorded
Recorded Investment With no related allowance recorded - 12/31	$ 961
Recorded Investment With no related allowance recorded - 09/30	1,836
Unpaid Principal Balance With no related allowance recorded - 12/31	972
Unpaid Principal Balance With no related allowance recorded - 09/30	1,882
Average Recorded Investment With no related allowance recorded	1,192	$ 1,033
Interest Income Recognized With no related allowance recorded	22	10
Recorded Investment With an allowance recorded - 12/31	5,924
Recorded Investment With an allowance recorded - 9/30	4,189
Unpaid Principal Balance With an allowance recorded - 12/31	7,000
Unpaid Principal Balance With an allowance recorded - 9/30	4,736
Related Allowance - 12/31	1,114
Related Allowance - 9/30	684
Average Recorded Investment With an allowance recorded	4,720	6,903
Interest Income Recognized With an allowance recorded	114	146
Recorded Investment - 12/31	6,885
Recorded Investment - 09/30	6,025
Unpaid Principal Balance - 12/31	7,972
Unpaid Principal Balance - 09/30	6,618
Average Recorded Investment	5,912	7,936
Interest Income Recognized	136	156
Agricultural [Member]
Impaired and Restructured Loans with or with no related allowance recorded
Average Recorded Investment With no related allowance recorded		113
Recorded Investment With an allowance recorded - 9/30	51
Unpaid Principal Balance With an allowance recorded - 9/30	51
Related Allowance - 9/30	3
Average Recorded Investment With an allowance recorded	65	162
Interest Income Recognized With an allowance recorded	(6)
Recorded Investment - 09/30	51
Unpaid Principal Balance - 09/30	51
Average Recorded Investment	65	275
Interest Income Recognized	(6)
Commercial and Industrial [Member]
Impaired and Restructured Loans with or with no related allowance recorded
Recorded Investment With no related allowance recorded - 12/31	38
Recorded Investment With no related allowance recorded - 09/30	4
Unpaid Principal Balance With no related allowance recorded - 12/31	43
Unpaid Principal Balance With no related allowance recorded - 09/30	7
Average Recorded Investment With no related allowance recorded	13	91
Recorded Investment With an allowance recorded - 9/30	103
Unpaid Principal Balance With an allowance recorded - 9/30	103
Related Allowance - 9/30	1
Average Recorded Investment With an allowance recorded	26	365
Interest Income Recognized With an allowance recorded	1	4
Recorded Investment - 12/31	38
Recorded Investment - 09/30	107
Unpaid Principal Balance - 12/31	43
Unpaid Principal Balance - 09/30	110
Average Recorded Investment	39	457
Interest Income Recognized	1	4
Consumer [Member]
Impaired and Restructured Loans with or with no related allowance recorded
Recorded Investment With no related allowance recorded - 12/31	8
Unpaid Principal Balance With no related allowance recorded - 12/31	8
Average Recorded Investment With no related allowance recorded	2	1
Recorded Investment With an allowance recorded - 12/31	28
Recorded Investment With an allowance recorded - 9/30	69
Unpaid Principal Balance With an allowance recorded - 12/31	28
Unpaid Principal Balance With an allowance recorded - 9/30	69
Related Allowance - 12/31	4
Related Allowance - 9/30	29
Average Recorded Investment With an allowance recorded	37	32
Interest Income Recognized With an allowance recorded	2	2
Recorded Investment - 12/31	36
Recorded Investment - 09/30	69
Unpaid Principal Balance - 12/31	36
Unpaid Principal Balance - 09/30	69
Average Recorded Investment	39	33
Interest Income Recognized	2	2
Commercial Real Estate [Member]
Impaired and Restructured Loans with or with no related allowance recorded
Recorded Investment With no related allowance recorded - 12/31	413
Recorded Investment With no related allowance recorded - 09/30	1,790
Unpaid Principal Balance With no related allowance recorded - 12/31	419
Unpaid Principal Balance With no related allowance recorded - 09/30	1,833
Average Recorded Investment With no related allowance recorded	941	338
Interest Income Recognized With no related allowance recorded	23	5
Recorded Investment With an allowance recorded - 12/31	3,440
Recorded Investment With an allowance recorded - 9/30	1,535
Unpaid Principal Balance With an allowance recorded - 12/31	4,498
Unpaid Principal Balance With an allowance recorded - 9/30	2,069
Related Allowance - 12/31	745
Related Allowance - 9/30	296
Average Recorded Investment With an allowance recorded	2,190	4,055
Interest Income Recognized With an allowance recorded	53	71
Recorded Investment - 12/31	3,853
Recorded Investment - 09/30	3,325
Unpaid Principal Balance - 12/31	4,917
Unpaid Principal Balance - 09/30	3,902
Average Recorded Investment	3,131	4,392
Interest Income Recognized	76	76
Residential Real Estate [Member]
Impaired and Restructured Loans with or with no related allowance recorded
Recorded Investment With no related allowance recorded - 12/31	502
Recorded Investment With no related allowance recorded - 09/30	42
Unpaid Principal Balance With no related allowance recorded - 12/31	502
Unpaid Principal Balance With no related allowance recorded - 09/30	42
Average Recorded Investment With no related allowance recorded	236	490
Interest Income Recognized With no related allowance recorded	(1)	5
Recorded Investment With an allowance recorded - 12/31	2,456
Recorded Investment With an allowance recorded - 9/30	2,431
Unpaid Principal Balance With an allowance recorded - 12/31	2,474
Unpaid Principal Balance With an allowance recorded - 9/30	2,444
Related Allowance - 12/31	365
Related Allowance - 9/30	355
Average Recorded Investment With an allowance recorded	2,402	2,289
Interest Income Recognized With an allowance recorded	64	69
Recorded Investment - 12/31	2,958
Recorded Investment - 09/30	2,473
Unpaid Principal Balance - 12/31	2,976
Unpaid Principal Balance - 09/30	2,486
Average Recorded Investment	2,638	2,779
Interest Income Recognized	$ 63	$ 74

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