Loans and Allowance for Loan Losses (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Loan and Allowance For Loan Losses (Textual)
Part of loans of 30 days or More past due as a percentage of total loan portfolio	1.11%	2.37%
Commercial loans percentage of total real estate loan	65.90%
Loans over 90 days past due and still accruing
Real estate loan percentage of total loan	80.90%	79.80%
Consumer loans percentage of total real estate loan	34.10%
Mortgage loan pledged as collateral for advances from FHLB	136,100,000
Foregone interest income on non accrual loans	$ 402,000	$ 419,000
Description of loan to value ratio	Approximately $70.8 million, or 11.0% of our loans had loan-to-value ratios which exceeded regulatory supervisory limits, of which 59 loans totaling approximately $20.7 million had loan-to-value ratios of 100% or more.
Owner occupied [Member]
Loan and Allowance For Loan Losses (Textual)
Commercial loans percentage of total real estate loan	24.60%
Non-owner occupied [Member]
Loan and Allowance For Loan Losses (Textual)
Commercial loans percentage of total real estate loan	25.60%
Construction [Member]
Loan and Allowance For Loan Losses (Textual)
Commercial loans percentage of total real estate loan	3.10%
Commercial [Member]
Loan and Allowance For Loan Losses (Textual)
Part of loans of 30 days or More past due as a percentage of total loan portfolio	0.94%	2.12%
Consumer [Member]
Loan and Allowance For Loan Losses (Textual)
Part of loans of 30 days or More past due as a percentage of total loan portfolio	0.17%	0.25%