Loans (Details 2) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Analysis of the credit risk profile of each loan class
Total	$ 383,594	$ 392,440
Pass [Member]
Analysis of the credit risk profile of each loan class
Total	304,351	304,176
Special Mention [Member]
Analysis of the credit risk profile of each loan class
Total	26,614	31,300
Substandard [Member]
Analysis of the credit risk profile of each loan class
Total	52,629	53,042
Doubtful [Member]
Analysis of the credit risk profile of each loan class
Total		3,922
Real estate loans [Member] \| Construction and land development [Member]
Analysis of the credit risk profile of each loan class
Total	43,524	48,363
Real estate loans [Member] \| Secured by 1-4 family residential [Member]
Analysis of the credit risk profile of each loan class
Total	134,964	122,339
Real estate loans [Member] \| Other real estate loans [Member]
Analysis of the credit risk profile of each loan class
Total	174,220	181,141
Real estate loans [Member] \| Pass [Member] \| Construction and land development [Member]
Analysis of the credit risk profile of each loan class
Total	22,384	23,172
Real estate loans [Member] \| Pass [Member] \| Secured by 1-4 family residential [Member]
Analysis of the credit risk profile of each loan class
Total	120,692	108,240
Real estate loans [Member] \| Pass [Member] \| Other real estate loans [Member]
Analysis of the credit risk profile of each loan class
Total	134,701	138,255
Real estate loans [Member] \| Special Mention [Member] \| Construction and land development [Member]
Analysis of the credit risk profile of each loan class
Total	5,176	7,504
Real estate loans [Member] \| Special Mention [Member] \| Secured by 1-4 family residential [Member]
Analysis of the credit risk profile of each loan class
Total	6,055	5,645
Real estate loans [Member] \| Special Mention [Member] \| Other real estate loans [Member]
Analysis of the credit risk profile of each loan class
Total	14,513	17,123
Real estate loans [Member] \| Substandard [Member] \| Construction and land development [Member]
Analysis of the credit risk profile of each loan class
Total	15,964	17,452
Real estate loans [Member] \| Substandard [Member] \| Secured by 1-4 family residential [Member]
Analysis of the credit risk profile of each loan class
Total	8,217	8,266
Real estate loans [Member] \| Substandard [Member] \| Other real estate loans [Member]
Analysis of the credit risk profile of each loan class
Total	25,006	22,348
Real estate loans [Member] \| Doubtful [Member] \| Construction and land development [Member]
Analysis of the credit risk profile of each loan class
Total		235
Real estate loans [Member] \| Doubtful [Member] \| Secured by 1-4 family residential [Member]
Analysis of the credit risk profile of each loan class
Total		188
Real estate loans [Member] \| Doubtful [Member] \| Other real estate loans [Member]
Analysis of the credit risk profile of each loan class
Total		3,415
Commercial and industrial [Member]
Analysis of the credit risk profile of each loan class
Total	23,071	29,446
Commercial and industrial [Member] \| Pass [Member]
Analysis of the credit risk profile of each loan class
Total	18,831	23,451
Commercial and industrial [Member] \| Special Mention [Member]
Analysis of the credit risk profile of each loan class
Total	798	949
Commercial and industrial [Member] \| Substandard [Member]
Analysis of the credit risk profile of each loan class
Total	3,442	4,976
Commercial and industrial [Member] \| Doubtful [Member]
Analysis of the credit risk profile of each loan class
Total		70
Consumer and other loans [Member]
Analysis of the credit risk profile of each loan class
Total	7,815	11,151
Consumer and other loans [Member] \| Pass [Member]
Analysis of the credit risk profile of each loan class
Total	7,743	11,058
Consumer and other loans [Member] \| Special Mention [Member]
Analysis of the credit risk profile of each loan class
Total	72	79
Consumer and other loans [Member] \| Doubtful [Member]
Analysis of the credit risk profile of each loan class
Total		$ 14