Fair Value (Details 3) (USD $) In Thousands, unless otherwise specified				12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Range of Input 2-40% [Member]	Dec. 31, 2012 Range of Input 0-30% [Member]	Dec. 31, 2012 Range of Input 0-15% [Member]	Dec. 31, 2012 Range of Input 0-10% [Member]	Dec. 31, 2012 Range of Input 0-20% [Member]
Fair Value, Trust preferred stock	$ 1,474	$ 1,342	$ 1,498
Fair Value, Impaired Loans- Applies to all loan classes	14,071	10,912
Fair Value, Real estate held for sale Applies to all classes	$ 446	$ 1,628
Fair Value Measurements, Valuation Techniques				Discounted cash flow			Appraisals	Appraisals
Fair Value Measurements Unobservable Inputs Description				Constant prepayment rate	Expected asset default	Expected recoveries	Discounts for collection issues and changes in market conditions	Discounts for changes in market conditions