Fair Value Measurements (Quantitative Information About Level 3 Assets Measured at Fair Value on a Nonrecurring Basis) (Details) (Nonrecurring [Member], USD $) In Thousands, unless otherwise specified					6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012 Level 3 [Member]	Jun. 30, 2011 Level 3 [Member]	Jun. 30, 2012 Appraisals Of Collateral [Member] Range of Inputs: Minimum [Member] Level 3 [Member] Collateral Dependent Impaired Loans [Member]		Jun. 30, 2012 Appraisals Of Collateral [Member] Range of Inputs: Minimum [Member] Level 3 [Member] Property Acquired Through Foreclosure Or Repossession [Member]		Jun. 30, 2012 Appraisals Of Collateral [Member] Range of Inputs: Maximum [Member] Level 3 [Member] Collateral Dependent Impaired Loans [Member]		Jun. 30, 2012 Appraisals Of Collateral [Member] Range of Inputs: Maximum [Member] Level 3 [Member] Property Acquired Through Foreclosure Or Repossession [Member]		Jun. 30, 2012 Appraisals Of Collateral [Member] Weighted Average [Member] Level 3 [Member] Collateral Dependent Impaired Loans [Member]		Jun. 30, 2012 Appraisals Of Collateral [Member] Weighted Average [Member] Level 3 [Member] Property Acquired Through Foreclosure Or Repossession [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Collateral dependent impaired loans	$ 2,792	$ 3,292	$ 2,792	$ 3,292
Property acquired through foreclosure or repossession	$ 1,070	$ 1,449	$ 1,070	$ 1,449
Discount For Costs To Sell					0.00%		0.00%		50.00%		15.00%		18.00%		8.00%
Appraisal Adjustments					10.00%	[1]	6.00%	[1]	15.00%	[1]	47.00%	[1]	15.00%	[1]	14.00%	[1]

[1] Management may adjust appraisal values to reflect market value declines or other discounts resulting from its knowledge of the property.