Fair Value Measurements (Quantitative Information About Level 3 Assets Measured at Fair Value on a Recurring Basis) (Details) (Recurring [Member], Discounted Cash Flow [Member], Level 3 [Member], Trust preferred securities: Collateralized debt obligations [Member], USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012
Fair Value Inputs Assets Quantitative Information [Line Items]
Trust preferred securities: Collateralized debt obligations	767
Range of Inputs: Minimum [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Discount Rate	17.50%
Cummulative Default Percentage	5.20%
Loss Given Default Percentage	85.00%
Range of Inputs: Maximum [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Discount Rate	17.50%
Cummulative Default Percentage	100.00%
Loss Given Default Percentage	100.00%
Weighted Average [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Discount Rate	17.50%
Cummulative Default Percentage	27.10%
Loss Given Default Percentage	90.90%