Fair Value Measurements (Fair Value Inputs, Assets, Quantitative Information) (Details) (USD $) In Thousands, unless otherwise specified					9 Months Ended
	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2011	Sep. 30, 2012 Fair Value [Member]	Sep. 30, 2012 Impaired Loans [Member]		Sep. 30, 2012 Foreclosed Assets Held For Resale [Member]		Sep. 30, 2012 Minimum [Member] Impaired Loans [Member]	Sep. 30, 2012 Minimum [Member] Foreclosed Assets Held For Resale [Member]	Sep. 30, 2012 Maximum [Member] Impaired Loans [Member]	Sep. 30, 2012 Maximum [Member] Foreclosed Assets Held For Resale [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans				$ 3,951
Foreclosed assets held for resale	$ 4,901	$ 4,437	$ 4,076	$ 2,065
Valuation Technique					Appraisal of collateral	[1]	Appraisal of collateral	[1],[2]
Unobservable Input					Appraisal adjustments	[3]	Appraisal adjustments	[3]
Range									10.00%	10.00%	50.00%	50.00%

[1] (1) Fair value is generally determined through independent third-party appraisals of the underlying collateral, which generally includes various Level 3 inputs which are not identifiable.

[2] (3) Includes qualitative adjustments by management and estimated liquidation expenses.

[3] (2) Appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses. The range of liquidation expenses and other appraisal adjustments are presented as a percentage of the appraisal.