Loans, Impaired Loans (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Impaired loans [Abstract]
Unpaid Contractual Principal Balance	$ 20,678	$ 15,652
Recorded Investment with no Allowance	12,031	7,003
Recorded Investment with Allowance	6,726	6,378
Total Recorded Investment	18,757	13,381
Related Allowance	1,125	1,072
Interest income on impaired loans recognized using a cash-basis method of accounting [Abstract]
Average Recorded Investment	15,135	15,295	20,656
Interest Income Recognized	340	389	901
Commercial [Member]
Impaired loans [Abstract]
Unpaid Contractual Principal Balance	5,794	3,628
Recorded Investment with no Allowance	5,010	2,769
Recorded Investment with Allowance	656	519
Total Recorded Investment	5,666	3,288
Related Allowance	83	95
Interest income on impaired loans recognized using a cash-basis method of accounting [Abstract]
Average Recorded Investment	3,937	3,639	3,366
Interest Income Recognized	38	44	107
Commercial Real Estate [Member]
Impaired loans [Abstract]
Unpaid Contractual Principal Balance	3,746	3,629
Recorded Investment with no Allowance	2,607	1,872
Recorded Investment with Allowance	1,122	1,170
Total Recorded Investment	3,729	3,042
Related Allowance	63	26
Interest income on impaired loans recognized using a cash-basis method of accounting [Abstract]
Average Recorded Investment	3,351	4,438	7,750
Interest Income Recognized	85	113	505
Agriculture [Member]
Impaired loans [Abstract]
Unpaid Contractual Principal Balance	1,878	0
Recorded Investment with no Allowance	1,591	0
Recorded Investment with Allowance	0	0
Total Recorded Investment	1,591	0
Related Allowance	0	0
Interest income on impaired loans recognized using a cash-basis method of accounting [Abstract]
Average Recorded Investment	398	737	1,963
Interest Income Recognized	0	35	27
Residential Mortgage [Member]
Impaired loans [Abstract]
Unpaid Contractual Principal Balance	6,524	5,831
Recorded Investment with no Allowance	2,166	1,860
Recorded Investment with Allowance	3,409	2,963
Total Recorded Investment	5,575	4,823
Related Allowance	701	417
Interest income on impaired loans recognized using a cash-basis method of accounting [Abstract]
Average Recorded Investment	5,455	4,312	5,593
Interest Income Recognized	136	107	186
Residential Construction [Member]
Impaired loans [Abstract]
Unpaid Contractual Principal Balance	1,115	1,148
Recorded Investment with no Allowance	94	0
Recorded Investment with Allowance	849	1,097
Total Recorded Investment	943	1,097
Related Allowance	254	433
Interest income on impaired loans recognized using a cash-basis method of accounting [Abstract]
Average Recorded Investment	989	1,166	1,492
Interest Income Recognized	42	52	67
Consumer [Member]
Impaired loans [Abstract]
Unpaid Contractual Principal Balance	1,621	1,416
Recorded Investment with no Allowance	563	502
Recorded Investment with Allowance	690	629
Total Recorded Investment	1,253	1,131
Related Allowance	24	101
Interest income on impaired loans recognized using a cash-basis method of accounting [Abstract]
Average Recorded Investment	1,005	1,003	492
Interest Income Recognized	$ 39	$ 38	$ 9