Loans, Past Due (Details) (USD $) In Thousands, unless otherwise specified			6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014 Minimum [Member]	Jun. 30, 2014 Loans Considered Non-Accrual [Member]	Dec. 31, 2013 Loans Considered Non-Accrual [Member]	Jun. 30, 2014 Loans Still Accruing [Member]	Dec. 31, 2013 Loans Still Accruing [Member]	Jun. 30, 2014 Mortgages [Member]	Dec. 31, 2013 Mortgages [Member]	Jun. 30, 2014 Home Equity [Member]	Dec. 31, 2013 Home Equity [Member]	Jun. 30, 2014 Commercial [Member]	Dec. 31, 2013 Commercial [Member]	Jun. 30, 2014 Agricultural [Member]	Dec. 31, 2013 Agricultural [Member]	Jun. 30, 2014 Construction [Member]	Dec. 31, 2013 Construction [Member]	Jun. 30, 2014 Residential [Member]	Dec. 31, 2013 Residential [Member]	Jun. 30, 2014 Commercial and Agricultural [Member]	Dec. 31, 2013 Commercial and Agricultural [Member]	Jun. 30, 2014 Consumer [Member]	Dec. 31, 2013 Consumer [Member]	Jun. 30, 2014 Other Commercial Loans [Member]	Dec. 31, 2013 Other Commercial Loans [Member]	Jun. 30, 2014 Other Agricultural Loans [Member]	Dec. 31, 2013 Other Agricultural Loans [Member]	Jun. 30, 2014 State and Political Subdivision Loans [Member]	Dec. 31, 2013 State and Political Subdivision Loans [Member]	Jun. 30, 2014 Commercial and Other Loans [Member]	Dec. 31, 2013 Commercial and Other Loans [Member]
Recorded investment of past due [Abstract]
30 to 59 Days Past Due	$ 1,793	$ 1,207		$ 112	$ 98	$ 1,681	$ 1,109	$ 575	$ 362	$ 605	$ 632	$ 88	$ 88	$ 0	$ 0	$ 0	$ 0					$ 33	$ 96	$ 55	$ 29	$ 437	$ 0	$ 0	$ 0
60 to 89 Days Past Due	925	425		407	164	518	261	168	40	247	2	12	319	0	0	0	0					90	36	408	28	0	0	0	0
90 Days Or Greater	3,175	4,124		2,828	3,427	347	697	535	739	119	229	2,021	3,091	0	0	0	0					15	16	485	49	0	0	0	0
Total Past Due	5,893	5,756		3,347	3,689	2,546	2,067	1,278	1,141	971	863	2,121	3,498	0	0	0	0					138	148	948	106	437	0	0	0
Current	533,984	534,856		4,214	4,408	529,770	530,448	121,197	118,743	63,737	66,354	184,856	189,589	23,809	22,001	3,474	8,937					8,554	9,415	47,060	44,382	9,645	9,541	71,652	65,894
Total Loans	539,877	540,612		7,561	8,097	532,316	532,515	122,475	119,884	64,708	67,217	186,977	193,087	23,809	22,001	3,474	8,937	187,183	187,101	210,786	215,088	8,692	9,563	48,008	44,488	10,082	9,541	71,652	65,894	58,090	54,029
90 Days and Accruing	347	697						0	301	46	51	301	344	0	0	0	0					0	1	0	0	0	0	0	0
Period of past due after which loans considered as non accrual			90 days
Financing receivables on nonaccrual status [Abstract]
Financing receivable nonaccrual status	$ 7,561	$ 8,097						$ 793	$ 508	$ 105	$ 177	$ 5,703	$ 7,247	$ 0	$ 0	$ 0	$ 0					$ 34	$ 15	$ 926	$ 150	$ 0	$ 0