Fair Value Measurements (Details) - USD ($)	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Fair Value Measurements [Abstract]
Percentage of selling costs reduced in sales comparison approach (in hundredths)	10.00%
Consumer mortgage loans in the process of foreclosure value	$ 575,000
Available-for-Sale Securities [Abstract]
Fair/Book value	351,424,000	$ 366,542,000	$ 401,732,000
Recurring [Member]
Available-for-Sale Securities [Abstract]
Government Agency & Government-Sponsored Entities	11,121,000	78,109,000	18,424,000
US Treasury Notes	80,238,000
Mortgage Backed Securities	259,580,000	287,948,000	326,335,000
Corporate Securities			54,661,000
Other	485,000	485,000	2,312,000
Fair/Book value	351,424,000	366,542,000	401,732,000
Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Available-for-Sale Securities [Abstract]
Government Agency & Government-Sponsored Entities	0	10,005,000	13,412,000
US Treasury Notes	0
Mortgage Backed Securities	0	0	0
Corporate Securities			8,982,000
Other	175,000	175,000	2,002,000
Fair/Book value	175,000	10,180,000	24,396,000
Recurring [Member] | Other Observable Inputs (Level 2) [Member]
Available-for-Sale Securities [Abstract]
Government Agency & Government-Sponsored Entities	11,121,000	68,104,000	5,012,000
US Treasury Notes	80,238,000
Mortgage Backed Securities	259,580,000	287,948,000	326,335,000
Corporate Securities			45,679,000
Other	310,000	310,000	310,000
Fair/Book value	351,249,000	356,362,000	377,336,000
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Available-for-Sale Securities [Abstract]
Government Agency & Government-Sponsored Entities	0	0	0
US Treasury Notes	0
Mortgage Backed Securities	0	0	0
Corporate Securities			0
Other	0	0	0
Fair/Book value	0	0	0
Nonrecurring [Member]
Impaired Loans [Abstract]
Commercial Real Estate		90,000
Residential 1st Mortgages	337,000	748,000	354,000
Home Equity Lines and Loans	128,000	759,000	729,000
Agricultural	313,000	346,000	354,000
Commercial	807,000	3,832,000	807,000
Consumer	6,000	6,000
Total Impaired Loans	1,591,000	5,781,000	2,244,000
Other Real Estate [Abstract]
Real Estate Construction	2,441,000	2,441,000	2,441,000
Agricultural Real Estate		858,000	853,000
Total Other Real Estate	2,441,000	3,299,000	3,294,000
Total Assets Measured at Fair Value On a Non-Recurring Basis	4,032,000	9,080,000	5,538,000
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Impaired Loans [Abstract]
Commercial Real Estate		0
Residential 1st Mortgages	0	0	0
Home Equity Lines and Loans	0	0	0
Agricultural	0	0	0
Commercial	0	0	0
Total Impaired Loans	0	0	0
Other Real Estate [Abstract]
Real Estate Construction	0	0	0
Agricultural Real Estate		0	0
Total Other Real Estate	0	0	0
Total Assets Measured at Fair Value On a Non-Recurring Basis	0	0	0
Nonrecurring [Member] | Other Observable Inputs (Level 2) [Member]
Impaired Loans [Abstract]
Commercial Real Estate		0
Residential 1st Mortgages	0	0	0
Home Equity Lines and Loans	0	0	0
Agricultural	0	0	0
Commercial	0	0	0
Total Impaired Loans	0	0	0
Other Real Estate [Abstract]
Real Estate Construction	0	0	0
Agricultural Real Estate		0	0
Total Other Real Estate	0	0	0
Total Assets Measured at Fair Value On a Non-Recurring Basis	0	0	0
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Impaired Loans [Abstract]
Commercial Real Estate		90,000
Residential 1st Mortgages	337,000	748,000	354,000
Home Equity Lines and Loans	128,000	759,000	729,000
Agricultural	313,000	346,000	354,000
Commercial	807,000	3,832,000	807,000
Consumer	6,000	6,000
Total Impaired Loans	1,591,000	5,781,000	2,244,000
Other Real Estate [Abstract]
Real Estate Construction	2,441,000	2,441,000	2,441,000
Agricultural Real Estate		858,000	853,000
Total Other Real Estate	2,441,000	3,299,000	3,294,000
Total Assets Measured at Fair Value On a Non-Recurring Basis	$ 4,032,000	$ 9,080,000	$ 5,538,000