Fair Value (Quantitative Information About Significant Unobservable Inputs Used In Fair Value Measurements) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Percentage Of Adjusted Specific Issuer Evaluation Defaults	50.00%
Percentage Of Adjusted Specific Issuer Evaluation Recoveries	25.00%
Percentage of illiquid local municipality issuance owned carried at par	100.00%
Pooled Trust Preferred Securities Group 1 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	9,359
Valuation Techniques	Discounted cash flow
Constant prepayment rate	0.00%	[1]
States And Political Subdivisions [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	984
Valuation Techniques	Discounted cash flow
Commercial Segment [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	14,159
Valuation Techniques	Fair value of collateral
Commercial Real Estate Segment [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	13,111
Valuation Techniques	Fair value of collateral
Commercial Real Estate Foreclosed Assets [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	24,032
Valuation Techniques	Fair value of collateral
Residentital Foreclosed Assets [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	471
Valuation Techniques	Fair value of collateral
Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Percentage Of Adjusted Specific Issuer Evaluation Defaults	0.00%
Minimum [Member] | Pooled Trust Preferred Securities Group 1 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Additional asset defaults	1.00%	[2]
Expected asset recoveries	3.00%	[3]
Percentage Of Adjusted Specific Issuer Evaluation Recoveries	0.00%
Minimum [Member] | Commercial Segment [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount for type of property, age of appraisal and current status	0.00%
Minimum [Member] | Commercial Real Estate Segment [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount for type of property, age of appraisal and current status	10.00%
Minimum [Member] | Commercial Real Estate Foreclosed Assets [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount for type of property, age of appraisal and current status	10.00%
Minimum [Member] | Residentital Foreclosed Assets [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount for type of property, age of appraisal and current status	10.00%
Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Percentage Of Adjusted Specific Issuer Evaluation Defaults	100.00%
Maximum [Member] | Pooled Trust Preferred Securities Group 1 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Additional asset defaults	32.00%	[2]
Expected asset recoveries	21.00%	[3]
Percentage Of Adjusted Specific Issuer Evaluation Recoveries	100.00%
Maximum [Member] | Commercial Segment [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount for type of property, age of appraisal and current status	50.00%
Maximum [Member] | Commercial Real Estate Segment [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount for type of property, age of appraisal and current status	40.00%
Maximum [Member] | Commercial Real Estate Foreclosed Assets [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount for type of property, age of appraisal and current status	40.00%
Maximum [Member] | Residentital Foreclosed Assets [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount for type of property, age of appraisal and current status	45.00%
Weighted Average [Member] | Pooled Trust Preferred Securities Group 1 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Additional asset defaults	8.00%	[2]
Expected asset recoveries	14.00%	[3]
Weighted Average [Member] | Commercial Segment [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range (Weighted Average)	25.00%
Weighted Average [Member] | Commercial Real Estate Segment [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount for type of property, age of appraisal and current status	25.00%
Weighted Average [Member] | Commercial Real Estate Foreclosed Assets [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount for type of property, age of appraisal and current status	25.00%
Weighted Average [Member] | Residentital Foreclosed Assets [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount for type of property, age of appraisal and current status	25.00%

[1] Assuming no prepayments.

[2] Each currently performing pool asset is assigned a default probability based on the banking environment, which is adjusted for specific issuer evaluation, of 0%, 50% or 100%

[3] Each currently defaulted pool asset is assigned a recovery probability based on specific issuer evaluation of 0%, 25% or 100%.