Loan Portfolio, Credit Quality Indicator (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	$ 716,106	$ 709,477
Pass [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	652,756	631,414
Special Mention [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	26,008	35,834
Substandard [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	34,640	38,611
Doubtful [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	2,702	3,618
Loss [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	0	0
Real Estate Construction [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	37,155	50,218
Real Estate Construction [Member] | Pass [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	31,061	29,741
Real Estate Construction [Member] | Special Mention [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	2,363	15,540
Real Estate Construction [Member] | Substandard [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	3,171	3,902
Real Estate Construction [Member] | Doubtful [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	560	1,035
Real Estate Construction [Member] | Loss [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	0	0
Real Estate Secured by Farmland [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	11,504	11,876
Real Estate Secured by Farmland [Member] | Pass [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	2,994	11,068
Real Estate Secured by Farmland [Member] | Special Mention [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	7,903	199
Real Estate Secured by Farmland [Member] | Substandard [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	607	609
Real Estate Secured by Farmland [Member] | Doubtful [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	0	0
Real Estate Secured by Farmland [Member] | Loss [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	0	0
Real Estate Secured by 1 - 4 Family Residential [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	269,986	260,620
Real Estate Secured by 1 - 4 Family Residential [Member] | Pass [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	249,447	237,121
Real Estate Secured by 1 - 4 Family Residential [Member] | Special Mention [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	2,488	3,767
Real Estate Secured by 1 - 4 Family Residential [Member] | Substandard [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	16,053	18,333
Real Estate Secured by 1 - 4 Family Residential [Member] | Doubtful [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	1,998	1,399
Real Estate Secured by 1 - 4 Family Residential [Member] | Loss [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	0	0
Other Real Estate Loans [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	261,095	254,930
Other Real Estate Loans [Member] | Pass [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	236,543	228,052
Other Real Estate Loans [Member] | Special Mention [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	12,291	12,949
Other Real Estate Loans [Member] | Substandard [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	12,261	12,887
Other Real Estate Loans [Member] | Doubtful [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	0	1,042
Other Real Estate Loans [Member] | Loss [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	0	0
Commercial [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	123,285	118,573
Commercial [Member] | Pass [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	119,731	112,298
Commercial [Member] | Special Mention [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	951	3,332
Commercial [Member] | Substandard [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	2,489	2,831
Commercial [Member] | Doubtful [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	114	112
Commercial [Member] | Loss [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	0	0
Consumer [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	13,081	13,260
Consumer [Member] | Pass [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	12,980	13,134
Consumer [Member] | Special Mention [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	12	47
Consumer [Member] | Substandard [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	59	49
Consumer [Member] | Doubtful [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	30	30
Consumer [Member] | Loss [Member]
Summary of loan classifications by class of loan [Abstract]
Summary of loan quality by class of loan	$ 0	$ 0