Fair Value Measurements (Details2) (Fair Value Measured on a Nonrecurring Basis, Significant Unobservable Inputs Level 3, USD $) In Thousands, unless otherwise specified			6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2012 Impaired loans	Jun. 30, 2012 Foreclosed and repossessed assets
Fair value of financial assets	$ 10,522	$ 13,261	$ 8,431	$ 2,091
Valuation Techniques			Discounted appraised value, Internal evaluations	Discounted appraised value, Internal evaluations
Unobservable Input			Selling cost, Discount due to age of appraisal	Selling cost, Discount due to age of appraisal
Range (Weighted Average)			10% (10%) , 0% - 5% (0.13%)	10% (10%), 0% - 5% (1.72%)