Loans (Details 2) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Analysis of the credit risk profile of each loan class
Total	$ 380,752	$ 392,440
Pass [Member]
Analysis of the credit risk profile of each loan class
Total	304,158	304,176
Special Mention [Member]
Analysis of the credit risk profile of each loan class
Total	21,719	31,300
Substandard [Member]
Analysis of the credit risk profile of each loan class
Total	54,875	53,042
Doubtful [Member]
Analysis of the credit risk profile of each loan class
Total		3,922
Real estate loans [Member] \| Other real estate loans [Member]
Analysis of the credit risk profile of each loan class
Total	175,122	181,141
Real estate loans [Member] \| Construction and land development [Member]
Analysis of the credit risk profile of each loan class
Total	44,725	48,363
Real estate loans [Member] \| Secured by 1-4 family residential [Member]
Analysis of the credit risk profile of each loan class
Total	128,354	122,339
Real estate loans [Member] \| Pass [Member] \| Other real estate loans [Member]
Analysis of the credit risk profile of each loan class
Total	138,949	138,255
Real estate loans [Member] \| Pass [Member] \| Construction and land development [Member]
Analysis of the credit risk profile of each loan class
Total	23,062	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	114,120	108,240
Real estate loans [Member] \| Special Mention [Member] \| Other real estate loans [Member]
Analysis of the credit risk profile of each loan class
Total	12,085	17,123
Real estate loans [Member] \| Special Mention [Member] \| Construction and land development [Member]
Analysis of the credit risk profile of each loan class
Total	4,206	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	4,518	5,645
Real estate loans [Member] \| Substandard [Member] \| Other real estate loans [Member]
Analysis of the credit risk profile of each loan class
Total	24,088	22,348
Real estate loans [Member] \| Substandard [Member] \| Construction and land development [Member]
Analysis of the credit risk profile of each loan class
Total	17,457	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	9,716	8,266
Real estate loans [Member] \| Doubtful [Member] \| Other real estate loans [Member]
Analysis of the credit risk profile of each loan class
Total		3,415
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
Commercial and industrial [Member]
Analysis of the credit risk profile of each loan class
Total	24,216	29,446
Commercial and industrial [Member] \| Pass [Member]
Analysis of the credit risk profile of each loan class
Total	19,766	23,451
Commercial and industrial [Member] \| Special Mention [Member]
Analysis of the credit risk profile of each loan class
Total	836	949
Commercial and industrial [Member] \| Substandard [Member]
Analysis of the credit risk profile of each loan class
Total	3,614	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	8,335	11,151
Consumer and other loans [Member] \| Pass [Member]
Analysis of the credit risk profile of each loan class
Total	8,261	11,058
Consumer and other loans [Member] \| Special Mention [Member]
Analysis of the credit risk profile of each loan class
Total	74	79
Consumer and other loans [Member] \| Substandard [Member]
Analysis of the credit risk profile of each loan class
Total
Consumer and other loans [Member] \| Doubtful [Member]
Analysis of the credit risk profile of each loan class
Total		$ 14